Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-22 19:01:37 +00:00
Code Issues Packages Projects Releases Wiki Activity
72662e0108
linux/arch/arm/kernel/perf_event_v7.c

1248 lines
33 KiB
C
Raw Normal View History

ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
/*
* ARMv7 Cortex-A8 and Cortex-A9 Performance Events handling code.
*
* ARMv7 support: Jean Pihet <jpihet@mvista.com>
* 2010 (c) MontaVista Software, LLC.
*
* Copied from ARMv6 code, with the low level code inspired
* by the ARMv7 Oprofile code.
*
* Cortex-A8 has up to 4 configurable performance counters and
* a single cycle counter.
* Cortex-A9 has up to 31 configurable performance counters and
* a single cycle counter.
*
* All counters can be enabled/disabled and IRQ masked separately. The cycle
* counter and all 4 performance counters together can be reset separately.
*/
#ifdef CONFIG_CPU_V7
ARM: perf: add mode exclusion for Cortex-A15 PMU The Cortex-A15 PMU implements the PMUv2 specification and therefore has support for some mode exclusion. This patch adds support for excluding user, kernel and hypervisor counts from a given event. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 12:53:36 +00:00
static struct arm_pmu armv7pmu;
ARM: perf: add PMUv2 common event definitions The PMUv2 specification reserves a number of event encodings for common events. This patch adds these events to the common event enumeration in preparation for PMUv2 cores, such as Cortex-A15. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-01-19 14:15:34 +00:00
/*
* Common ARMv7 event types
*
* Note: An implementation may not be able to count all of these events
* but the encodings are considered to be `reserved' in the case that
* they are not available.
*/
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
enum armv7_perf_types {
ARMV7_PERFCTR_PMNC_SW_INCR = 0x00,
ARMV7_PERFCTR_IFETCH_MISS = 0x01,
ARMV7_PERFCTR_ITLB_MISS = 0x02,
ARM: perf: add PMUv2 common event definitions The PMUv2 specification reserves a number of event encodings for common events. This patch adds these events to the common event enumeration in preparation for PMUv2 cores, such as Cortex-A15. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-01-19 14:15:34 +00:00
ARMV7_PERFCTR_DCACHE_REFILL = 0x03, /* L1 */
ARMV7_PERFCTR_DCACHE_ACCESS = 0x04, /* L1 */
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
ARMV7_PERFCTR_DTLB_REFILL = 0x05,
ARMV7_PERFCTR_DREAD = 0x06,
ARMV7_PERFCTR_DWRITE = 0x07,
ARM: perf: add PMUv2 common event definitions The PMUv2 specification reserves a number of event encodings for common events. This patch adds these events to the common event enumeration in preparation for PMUv2 cores, such as Cortex-A15. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-01-19 14:15:34 +00:00
ARMV7_PERFCTR_INSTR_EXECUTED = 0x08,
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
ARMV7_PERFCTR_EXC_TAKEN = 0x09,
ARMV7_PERFCTR_EXC_EXECUTED = 0x0A,
ARMV7_PERFCTR_CID_WRITE = 0x0B,
/* ARMV7_PERFCTR_PC_WRITE is equivalent to HW_BRANCH_INSTRUCTIONS.
* It counts:
* - all branch instructions,
* - instructions that explicitly write the PC,
* - exception generating instructions.
*/
ARMV7_PERFCTR_PC_WRITE = 0x0C,
ARMV7_PERFCTR_PC_IMM_BRANCH = 0x0D,
ARM: perf: add PMUv2 common event definitions The PMUv2 specification reserves a number of event encodings for common events. This patch adds these events to the common event enumeration in preparation for PMUv2 cores, such as Cortex-A15. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-01-19 14:15:34 +00:00
ARMV7_PERFCTR_PC_PROC_RETURN = 0x0E,
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
ARMV7_PERFCTR_UNALIGNED_ACCESS = 0x0F,
ARM: perf: add PMUv2 common event definitions The PMUv2 specification reserves a number of event encodings for common events. This patch adds these events to the common event enumeration in preparation for PMUv2 cores, such as Cortex-A15. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-01-19 14:15:34 +00:00
/* These events are defined by the PMUv2 supplement (ARM DDI 0457A). */
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
ARMV7_PERFCTR_PC_BRANCH_MIS_PRED = 0x10,
ARMV7_PERFCTR_CLOCK_CYCLES = 0x11,
ARM: perf: add PMUv2 common event definitions The PMUv2 specification reserves a number of event encodings for common events. This patch adds these events to the common event enumeration in preparation for PMUv2 cores, such as Cortex-A15. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-01-19 14:15:34 +00:00
ARMV7_PERFCTR_PC_BRANCH_PRED = 0x12,
ARMV7_PERFCTR_MEM_ACCESS = 0x13,
ARMV7_PERFCTR_L1_ICACHE_ACCESS = 0x14,
ARMV7_PERFCTR_L1_DCACHE_WB = 0x15,
ARMV7_PERFCTR_L2_DCACHE_ACCESS = 0x16,
ARMV7_PERFCTR_L2_DCACHE_REFILL = 0x17,
ARMV7_PERFCTR_L2_DCACHE_WB = 0x18,
ARMV7_PERFCTR_BUS_ACCESS = 0x19,
ARMV7_PERFCTR_MEMORY_ERROR = 0x1A,
ARMV7_PERFCTR_INSTR_SPEC = 0x1B,
ARMV7_PERFCTR_TTBR_WRITE = 0x1C,
ARMV7_PERFCTR_BUS_CYCLES = 0x1D,
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
ARMV7_PERFCTR_CPU_CYCLES = 0xFF
};
/* ARMv7 Cortex-A8 specific event types */
enum armv7_a8_perf_types {
ARMV7_PERFCTR_WRITE_BUFFER_FULL = 0x40,
ARMV7_PERFCTR_L2_STORE_MERGED = 0x41,
ARMV7_PERFCTR_L2_STORE_BUFF = 0x42,
ARMV7_PERFCTR_L2_ACCESS = 0x43,
ARMV7_PERFCTR_L2_CACH_MISS = 0x44,
ARMV7_PERFCTR_AXI_READ_CYCLES = 0x45,
ARMV7_PERFCTR_AXI_WRITE_CYCLES = 0x46,
ARMV7_PERFCTR_MEMORY_REPLAY = 0x47,
ARMV7_PERFCTR_UNALIGNED_ACCESS_REPLAY = 0x48,
ARMV7_PERFCTR_L1_DATA_MISS = 0x49,
ARMV7_PERFCTR_L1_INST_MISS = 0x4A,
ARMV7_PERFCTR_L1_DATA_COLORING = 0x4B,
ARMV7_PERFCTR_L1_NEON_DATA = 0x4C,
ARMV7_PERFCTR_L1_NEON_CACH_DATA = 0x4D,
ARMV7_PERFCTR_L2_NEON = 0x4E,
ARMV7_PERFCTR_L2_NEON_HIT = 0x4F,
ARMV7_PERFCTR_L1_INST = 0x50,
ARMV7_PERFCTR_PC_RETURN_MIS_PRED = 0x51,
ARMV7_PERFCTR_PC_BRANCH_FAILED = 0x52,
ARMV7_PERFCTR_PC_BRANCH_TAKEN = 0x53,
ARMV7_PERFCTR_PC_BRANCH_EXECUTED = 0x54,
ARMV7_PERFCTR_OP_EXECUTED = 0x55,
ARMV7_PERFCTR_CYCLES_INST_STALL = 0x56,
ARMV7_PERFCTR_CYCLES_INST = 0x57,
ARMV7_PERFCTR_CYCLES_NEON_DATA_STALL = 0x58,
ARMV7_PERFCTR_CYCLES_NEON_INST_STALL = 0x59,
ARMV7_PERFCTR_NEON_CYCLES = 0x5A,
ARMV7_PERFCTR_PMU0_EVENTS = 0x70,
ARMV7_PERFCTR_PMU1_EVENTS = 0x71,
ARMV7_PERFCTR_PMU_EVENTS = 0x72,
};
/* ARMv7 Cortex-A9 specific event types */
enum armv7_a9_perf_types {
ARMV7_PERFCTR_JAVA_HW_BYTECODE_EXEC = 0x40,
ARMV7_PERFCTR_JAVA_SW_BYTECODE_EXEC = 0x41,
ARMV7_PERFCTR_JAZELLE_BRANCH_EXEC = 0x42,
ARMV7_PERFCTR_COHERENT_LINE_MISS = 0x50,
ARMV7_PERFCTR_COHERENT_LINE_HIT = 0x51,
ARMV7_PERFCTR_ICACHE_DEP_STALL_CYCLES = 0x60,
ARMV7_PERFCTR_DCACHE_DEP_STALL_CYCLES = 0x61,
ARMV7_PERFCTR_TLB_MISS_DEP_STALL_CYCLES = 0x62,
ARMV7_PERFCTR_STREX_EXECUTED_PASSED = 0x63,
ARMV7_PERFCTR_STREX_EXECUTED_FAILED = 0x64,
ARMV7_PERFCTR_DATA_EVICTION = 0x65,
ARMV7_PERFCTR_ISSUE_STAGE_NO_INST = 0x66,
ARMV7_PERFCTR_ISSUE_STAGE_EMPTY = 0x67,
ARMV7_PERFCTR_INST_OUT_OF_RENAME_STAGE = 0x68,
ARMV7_PERFCTR_PREDICTABLE_FUNCT_RETURNS = 0x6E,
ARMV7_PERFCTR_MAIN_UNIT_EXECUTED_INST = 0x70,
ARMV7_PERFCTR_SECOND_UNIT_EXECUTED_INST = 0x71,
ARMV7_PERFCTR_LD_ST_UNIT_EXECUTED_INST = 0x72,
ARMV7_PERFCTR_FP_EXECUTED_INST = 0x73,
ARMV7_PERFCTR_NEON_EXECUTED_INST = 0x74,
ARMV7_PERFCTR_PLD_FULL_DEP_STALL_CYCLES = 0x80,
ARMV7_PERFCTR_DATA_WR_DEP_STALL_CYCLES = 0x81,
ARMV7_PERFCTR_ITLB_MISS_DEP_STALL_CYCLES = 0x82,
ARMV7_PERFCTR_DTLB_MISS_DEP_STALL_CYCLES = 0x83,
ARMV7_PERFCTR_MICRO_ITLB_MISS_DEP_STALL_CYCLES = 0x84,
ARMV7_PERFCTR_MICRO_DTLB_MISS_DEP_STALL_CYCLES = 0x85,
ARMV7_PERFCTR_DMB_DEP_STALL_CYCLES = 0x86,
ARMV7_PERFCTR_INTGR_CLK_ENABLED_CYCLES = 0x8A,
ARMV7_PERFCTR_DATA_ENGINE_CLK_EN_CYCLES = 0x8B,
ARMV7_PERFCTR_ISB_INST = 0x90,
ARMV7_PERFCTR_DSB_INST = 0x91,
ARMV7_PERFCTR_DMB_INST = 0x92,
ARMV7_PERFCTR_EXT_INTERRUPTS = 0x93,
ARMV7_PERFCTR_PLE_CACHE_LINE_RQST_COMPLETED = 0xA0,
ARMV7_PERFCTR_PLE_CACHE_LINE_RQST_SKIPPED = 0xA1,
ARMV7_PERFCTR_PLE_FIFO_FLUSH = 0xA2,
ARMV7_PERFCTR_PLE_RQST_COMPLETED = 0xA3,
ARMV7_PERFCTR_PLE_FIFO_OVERFLOW = 0xA4,
ARMV7_PERFCTR_PLE_RQST_PROG = 0xA5
};
ARM: perf: add support for the Cortex-A5 PMU This patch adds support for the Cortex-A5 PMU to the ARMv7 perf-event backend. Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-06-03 16:40:15 +00:00
/* ARMv7 Cortex-A5 specific event types */
enum armv7_a5_perf_types {
ARMV7_PERFCTR_IRQ_TAKEN = 0x86,
ARMV7_PERFCTR_FIQ_TAKEN = 0x87,
ARMV7_PERFCTR_EXT_MEM_RQST = 0xc0,
ARMV7_PERFCTR_NC_EXT_MEM_RQST = 0xc1,
ARMV7_PERFCTR_PREFETCH_LINEFILL = 0xc2,
ARMV7_PERFCTR_PREFETCH_LINEFILL_DROP = 0xc3,
ARMV7_PERFCTR_ENTER_READ_ALLOC = 0xc4,
ARMV7_PERFCTR_READ_ALLOC = 0xc5,
ARMV7_PERFCTR_STALL_SB_FULL = 0xc9,
};
ARM: perf: add support for the Cortex-A15 PMU This patch adds support for the Cortex-A15 PMU to the ARMv7 perf-event backend. Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-01-19 14:24:38 +00:00
/* ARMv7 Cortex-A15 specific event types */
enum armv7_a15_perf_types {
ARMV7_PERFCTR_L1_DCACHE_READ_ACCESS = 0x40,
ARMV7_PERFCTR_L1_DCACHE_WRITE_ACCESS = 0x41,
ARMV7_PERFCTR_L1_DCACHE_READ_REFILL = 0x42,
ARMV7_PERFCTR_L1_DCACHE_WRITE_REFILL = 0x43,
ARMV7_PERFCTR_L1_DTLB_READ_REFILL = 0x4C,
ARMV7_PERFCTR_L1_DTLB_WRITE_REFILL = 0x4D,
ARMV7_PERFCTR_L2_DCACHE_READ_ACCESS = 0x50,
ARMV7_PERFCTR_L2_DCACHE_WRITE_ACCESS = 0x51,
ARMV7_PERFCTR_L2_DCACHE_READ_REFILL = 0x52,
ARMV7_PERFCTR_L2_DCACHE_WRITE_REFILL = 0x53,
ARMV7_PERFCTR_SPEC_PC_WRITE = 0x76,
};
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
/*
* Cortex-A8 HW events mapping
*
* The hardware events that we support. We do support cache operations but
* we have harvard caches and no way to combine instruction and data
* accesses/misses in hardware.
*/
static const unsigned armv7_a8_perf_map[PERF_COUNT_HW_MAX] = {
[PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
[PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED,
[PERF_COUNT_HW_CACHE_REFERENCES] = HW_OP_UNSUPPORTED,
[PERF_COUNT_HW_CACHE_MISSES] = HW_OP_UNSUPPORTED,
[PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE,
[PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
[PERF_COUNT_HW_BUS_CYCLES] = ARMV7_PERFCTR_CLOCK_CYCLES,
};
static const unsigned armv7_a8_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] = {
[C(L1D)] = {
/*
* The performance counters don't differentiate between read
* and write accesses/misses so this isn't strictly correct,
* but it's the best we can do. Writes and reads get
* combined.
*/
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = ARMV7_PERFCTR_DCACHE_ACCESS,
[C(RESULT_MISS)] = ARMV7_PERFCTR_DCACHE_REFILL,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = ARMV7_PERFCTR_DCACHE_ACCESS,
[C(RESULT_MISS)] = ARMV7_PERFCTR_DCACHE_REFILL,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
},
[C(L1I)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_INST,
[C(RESULT_MISS)] = ARMV7_PERFCTR_L1_INST_MISS,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_INST,
[C(RESULT_MISS)] = ARMV7_PERFCTR_L1_INST_MISS,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
},
[C(LL)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = ARMV7_PERFCTR_L2_ACCESS,
[C(RESULT_MISS)] = ARMV7_PERFCTR_L2_CACH_MISS,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = ARMV7_PERFCTR_L2_ACCESS,
[C(RESULT_MISS)] = ARMV7_PERFCTR_L2_CACH_MISS,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
},
[C(DTLB)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
},
[C(ITLB)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_MISS,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_MISS,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
},
[C(BPU)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_WRITE,
[C(RESULT_MISS)]
= ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_WRITE,
[C(RESULT_MISS)]
= ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
},
perf, arch: Add generic NODE cache events Add a NODE level to the generic cache events which is used to measure local vs remote memory accesses. Like all other cache events, an ACCESS is HIT+MISS, if there is no way to distinguish between reads and writes do reads only etc.. The below needs filling out for !x86 (which I filled out with unsupported events). I'm fairly sure ARM can leave it like that since it doesn't strike me as an architecture that even has NUMA support. SH might have something since it does appear to have some NUMA bits. Sparc64, PowerPC and MIPS certainly want a good look there since they clearly are NUMA capable. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: David Miller <davem@davemloft.net> Cc: Anton Blanchard <anton@samba.org> Cc: David Daney <ddaney@caviumnetworks.com> Cc: Deng-Cheng Zhu <dengcheng.zhu@gmail.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Will Deacon <will.deacon@arm.com> Cc: Robert Richter <robert.richter@amd.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1303508226.4865.8.camel@laptop Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-04-22 21:37:06 +00:00
[C(NODE)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
},
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
};
/*
* Cortex-A9 HW events mapping
*/
static const unsigned armv7_a9_perf_map[PERF_COUNT_HW_MAX] = {
[PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
[PERF_COUNT_HW_INSTRUCTIONS] =
ARMV7_PERFCTR_INST_OUT_OF_RENAME_STAGE,
ARM: 7117/1: perf: fix HW_CACHE_* events on Cortex-A9 Using COHERENT_LINE_{MISS,HIT} for cache misses and references respectively is completely wrong. Instead, use the L1D events which are a better and more useful approximation despite ignoring instruction traffic. Reported-by: Alasdair Grant <alasdair.grant@arm.com> Reported-by: Matt Horsnell <matt.horsnell@arm.com> Reported-by: Michael Williams <michael.williams@arm.com> Cc: stable@kernel.org Cc: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-10-03 17:30:53 +00:00
[PERF_COUNT_HW_CACHE_REFERENCES] = ARMV7_PERFCTR_DCACHE_ACCESS,
[PERF_COUNT_HW_CACHE_MISSES] = ARMV7_PERFCTR_DCACHE_REFILL,
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
[PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE,
[PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
[PERF_COUNT_HW_BUS_CYCLES] = ARMV7_PERFCTR_CLOCK_CYCLES,
};
static const unsigned armv7_a9_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] = {
[C(L1D)] = {
/*
* The performance counters don't differentiate between read
* and write accesses/misses so this isn't strictly correct,
* but it's the best we can do. Writes and reads get
* combined.
*/
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = ARMV7_PERFCTR_DCACHE_ACCESS,
[C(RESULT_MISS)] = ARMV7_PERFCTR_DCACHE_REFILL,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = ARMV7_PERFCTR_DCACHE_ACCESS,
[C(RESULT_MISS)] = ARMV7_PERFCTR_DCACHE_REFILL,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
},
[C(L1I)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = ARMV7_PERFCTR_IFETCH_MISS,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = ARMV7_PERFCTR_IFETCH_MISS,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
},
[C(LL)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
},
[C(DTLB)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
},
[C(ITLB)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_MISS,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_MISS,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
},
[C(BPU)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_WRITE,
[C(RESULT_MISS)]
= ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_WRITE,
[C(RESULT_MISS)]
= ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
},
perf, arch: Add generic NODE cache events Add a NODE level to the generic cache events which is used to measure local vs remote memory accesses. Like all other cache events, an ACCESS is HIT+MISS, if there is no way to distinguish between reads and writes do reads only etc.. The below needs filling out for !x86 (which I filled out with unsupported events). I'm fairly sure ARM can leave it like that since it doesn't strike me as an architecture that even has NUMA support. SH might have something since it does appear to have some NUMA bits. Sparc64, PowerPC and MIPS certainly want a good look there since they clearly are NUMA capable. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: David Miller <davem@davemloft.net> Cc: Anton Blanchard <anton@samba.org> Cc: David Daney <ddaney@caviumnetworks.com> Cc: Deng-Cheng Zhu <dengcheng.zhu@gmail.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Will Deacon <will.deacon@arm.com> Cc: Robert Richter <robert.richter@amd.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1303508226.4865.8.camel@laptop Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-04-22 21:37:06 +00:00
[C(NODE)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
},
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
};
ARM: perf: add support for the Cortex-A5 PMU This patch adds support for the Cortex-A5 PMU to the ARMv7 perf-event backend. Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-06-03 16:40:15 +00:00
/*
* Cortex-A5 HW events mapping
*/
static const unsigned armv7_a5_perf_map[PERF_COUNT_HW_MAX] = {
[PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
[PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED,
[PERF_COUNT_HW_CACHE_REFERENCES] = HW_OP_UNSUPPORTED,
[PERF_COUNT_HW_CACHE_MISSES] = HW_OP_UNSUPPORTED,
[PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE,
[PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
[PERF_COUNT_HW_BUS_CYCLES] = HW_OP_UNSUPPORTED,
};
static const unsigned armv7_a5_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] = {
[C(L1D)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)]
= ARMV7_PERFCTR_DCACHE_ACCESS,
[C(RESULT_MISS)]
= ARMV7_PERFCTR_DCACHE_REFILL,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)]
= ARMV7_PERFCTR_DCACHE_ACCESS,
[C(RESULT_MISS)]
= ARMV7_PERFCTR_DCACHE_REFILL,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)]
= ARMV7_PERFCTR_PREFETCH_LINEFILL,
[C(RESULT_MISS)]
= ARMV7_PERFCTR_PREFETCH_LINEFILL_DROP,
},
},
[C(L1I)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
[C(RESULT_MISS)] = ARMV7_PERFCTR_IFETCH_MISS,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
[C(RESULT_MISS)] = ARMV7_PERFCTR_IFETCH_MISS,
},
/*
* The prefetch counters don't differentiate between the I
* side and the D side.
*/
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)]
= ARMV7_PERFCTR_PREFETCH_LINEFILL,
[C(RESULT_MISS)]
= ARMV7_PERFCTR_PREFETCH_LINEFILL_DROP,
},
},
[C(LL)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
},
[C(DTLB)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
},
[C(ITLB)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_MISS,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_MISS,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
},
[C(BPU)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
[C(RESULT_MISS)]
= ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
[C(RESULT_MISS)]
= ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
},
};
ARM: perf: add support for the Cortex-A15 PMU This patch adds support for the Cortex-A15 PMU to the ARMv7 perf-event backend. Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-01-19 14:24:38 +00:00
/*
* Cortex-A15 HW events mapping
*/
static const unsigned armv7_a15_perf_map[PERF_COUNT_HW_MAX] = {
[PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
[PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED,
[PERF_COUNT_HW_CACHE_REFERENCES] = HW_OP_UNSUPPORTED,
[PERF_COUNT_HW_CACHE_MISSES] = HW_OP_UNSUPPORTED,
[PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_SPEC_PC_WRITE,
[PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
[PERF_COUNT_HW_BUS_CYCLES] = ARMV7_PERFCTR_BUS_CYCLES,
};
static const unsigned armv7_a15_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] = {
[C(L1D)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)]
= ARMV7_PERFCTR_L1_DCACHE_READ_ACCESS,
[C(RESULT_MISS)]
= ARMV7_PERFCTR_L1_DCACHE_READ_REFILL,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)]
= ARMV7_PERFCTR_L1_DCACHE_WRITE_ACCESS,
[C(RESULT_MISS)]
= ARMV7_PERFCTR_L1_DCACHE_WRITE_REFILL,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
},
[C(L1I)] = {
/*
* Not all performance counters differentiate between read
* and write accesses/misses so we're not always strictly
* correct, but it's the best we can do. Writes and reads get
* combined in these cases.
*/
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
[C(RESULT_MISS)] = ARMV7_PERFCTR_IFETCH_MISS,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
[C(RESULT_MISS)] = ARMV7_PERFCTR_IFETCH_MISS,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
},
[C(LL)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)]
= ARMV7_PERFCTR_L2_DCACHE_READ_ACCESS,
[C(RESULT_MISS)]
= ARMV7_PERFCTR_L2_DCACHE_READ_REFILL,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)]
= ARMV7_PERFCTR_L2_DCACHE_WRITE_ACCESS,
[C(RESULT_MISS)]
= ARMV7_PERFCTR_L2_DCACHE_WRITE_REFILL,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
},
[C(DTLB)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)]
= ARMV7_PERFCTR_L1_DTLB_READ_REFILL,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)]
= ARMV7_PERFCTR_L1_DTLB_WRITE_REFILL,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
},
[C(ITLB)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_MISS,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_MISS,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
},
[C(BPU)] = {
[C(OP_READ)] = {
[C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
[C(RESULT_MISS)]
= ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
},
[C(OP_WRITE)] = {
[C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
[C(RESULT_MISS)]
= ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
},
[C(OP_PREFETCH)] = {
[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
},
},
};
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
/*
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
* Perf Events' indices
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
*/
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
#define ARMV7_IDX_CYCLE_COUNTER 0
#define ARMV7_IDX_COUNTER0 1
ARM: perf: remove cpu-related misnomers Currently struct cpu_hw_events stores data on events running on a PMU associated with a CPU. As this data is general enough to be used for system PMUs, this name is a misnomer, and may cause confusion when it is used for system PMUs. Additionally, 'armpmu' is commonly used as a parameter name for an instance of struct arm_pmu. The name is also used for a global instance which represents the CPU's PMU. As cpu_hw_events is now not tied to CPU PMUs, it is renamed to pmu_hw_events, with instances of it renamed similarly. As the global 'armpmu' is CPU-specfic, it is renamed to cpu_pmu. This should make it clearer which code is generic, and which is coupled with the CPU. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-05-17 10:20:11 +00:00
#define ARMV7_IDX_COUNTER_LAST (ARMV7_IDX_CYCLE_COUNTER + cpu_pmu->num_events - 1)
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
#define ARMV7_MAX_COUNTERS 32
#define ARMV7_COUNTER_MASK (ARMV7_MAX_COUNTERS - 1)
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
/*
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
* ARMv7 low level PMNC access
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
*/
/*
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
* Perf Event to low level counters mapping
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
*/
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
#define ARMV7_IDX_TO_COUNTER(x) \
(((x) - ARMV7_IDX_COUNTER0) & ARMV7_COUNTER_MASK)
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
/*
* Per-CPU PMNC: config reg
*/
#define ARMV7_PMNC_E (1 << 0) /* Enable all counters */
#define ARMV7_PMNC_P (1 << 1) /* Reset all counters */
#define ARMV7_PMNC_C (1 << 2) /* Cycle counter reset */
#define ARMV7_PMNC_D (1 << 3) /* CCNT counts every 64th cpu cycle */
#define ARMV7_PMNC_X (1 << 4) /* Export to ETM */
#define ARMV7_PMNC_DP (1 << 5) /* Disable CCNT if non-invasive debug*/
#define ARMV7_PMNC_N_SHIFT 11 /* Number of counters supported */
#define ARMV7_PMNC_N_MASK 0x1f
#define ARMV7_PMNC_MASK 0x3f /* Mask for writable bits */
/*
* FLAG: counters overflow flag status reg
*/
#define ARMV7_FLAG_MASK 0xffffffff /* Mask for writable bits */
#define ARMV7_OVERFLOWED_MASK ARMV7_FLAG_MASK
/*
ARM: perf: add mode exclusion for Cortex-A15 PMU The Cortex-A15 PMU implements the PMUv2 specification and therefore has support for some mode exclusion. This patch adds support for excluding user, kernel and hypervisor counts from a given event. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 12:53:36 +00:00
* PMXEVTYPER: Event selection reg
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
*/
ARM: perf: add mode exclusion for Cortex-A15 PMU The Cortex-A15 PMU implements the PMUv2 specification and therefore has support for some mode exclusion. This patch adds support for excluding user, kernel and hypervisor counts from a given event. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 12:53:36 +00:00
#define ARMV7_EVTYPE_MASK 0xc00000ff /* Mask for writable bits */
#define ARMV7_EVTYPE_EVENT 0xff /* Mask for EVENT bits */
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
/*
ARM: perf: add mode exclusion for Cortex-A15 PMU The Cortex-A15 PMU implements the PMUv2 specification and therefore has support for some mode exclusion. This patch adds support for excluding user, kernel and hypervisor counts from a given event. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 12:53:36 +00:00
* Event filters for PMUv2
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
*/
ARM: perf: add mode exclusion for Cortex-A15 PMU The Cortex-A15 PMU implements the PMUv2 specification and therefore has support for some mode exclusion. This patch adds support for excluding user, kernel and hypervisor counts from a given event. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 12:53:36 +00:00
#define ARMV7_EXCLUDE_PL1 (1 << 31)
#define ARMV7_EXCLUDE_USER (1 << 30)
#define ARMV7_INCLUDE_HYP (1 << 27)
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
ARM: perf: use u32 instead of unsigned long for PMNC register The ARMv7 perf backend mixes up u32 and unsigned long, which is rather ugly. This patch makes the ARMv7 PMU code consistently use the u32 type instead. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 13:55:57 +00:00
static inline u32 armv7_pmnc_read(void)
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
{
u32 val;
asm volatile("mrc p15, 0, %0, c9, c12, 0" : "=r"(val));
return val;
}
ARM: perf: use u32 instead of unsigned long for PMNC register The ARMv7 perf backend mixes up u32 and unsigned long, which is rather ugly. This patch makes the ARMv7 PMU code consistently use the u32 type instead. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 13:55:57 +00:00
static inline void armv7_pmnc_write(u32 val)
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
{
val &= ARMV7_PMNC_MASK;
ARM: 6833/1: perf: add required isbs() to ARMv7 backend The ARMv7 architecture does not guarantee that effects from co-processor writes are immediately visible to following instructions. This patch adds two isbs to the ARMv7 perf code: (1) Immediately after selecting an event register, so that the PMU state following this instruction is consistent with the new event. (2) Immediately before writing to the PMCR, so that any previous writes to the PMU have taken effect before (typically) enabling the counters. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-03-25 12:12:23 +00:00
isb();
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
asm volatile("mcr p15, 0, %0, c9, c12, 0" : : "r"(val));
}
ARM: perf: use u32 instead of unsigned long for PMNC register The ARMv7 perf backend mixes up u32 and unsigned long, which is rather ugly. This patch makes the ARMv7 PMU code consistently use the u32 type instead. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 13:55:57 +00:00
static inline int armv7_pmnc_has_overflowed(u32 pmnc)
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
{
return pmnc & ARMV7_OVERFLOWED_MASK;
}
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
static inline int armv7_pmnc_counter_valid(int idx)
{
return idx >= ARMV7_IDX_CYCLE_COUNTER && idx <= ARMV7_IDX_COUNTER_LAST;
}
static inline int armv7_pmnc_counter_has_overflowed(u32 pmnc, int idx)
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
{
int ret = 0;
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
u32 counter;
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
if (!armv7_pmnc_counter_valid(idx)) {
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
pr_err("CPU%u checking wrong counter %d overflow status\n",
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
smp_processor_id(), idx);
} else {
counter = ARMV7_IDX_TO_COUNTER(idx);
ret = pmnc & BIT(counter);
}
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
return ret;
}
ARM: perf: use integers for ARMv7 event indices This patch ensures that integers are used to represent event indices in the ARMv7 PMU backend. This ensures consistency between functions and also with the arm_pmu structure. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:17:48 +00:00
static inline int armv7_pmnc_select_counter(int idx)
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
{
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
u32 counter;
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
if (!armv7_pmnc_counter_valid(idx)) {
pr_err("CPU%u selecting wrong PMNC counter %d\n",
smp_processor_id(), idx);
return -EINVAL;
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
}
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
counter = ARMV7_IDX_TO_COUNTER(idx);
asm volatile("mcr p15, 0, %0, c9, c12, 5" : : "r" (counter));
ARM: 6833/1: perf: add required isbs() to ARMv7 backend The ARMv7 architecture does not guarantee that effects from co-processor writes are immediately visible to following instructions. This patch adds two isbs to the ARMv7 perf code: (1) Immediately after selecting an event register, so that the PMU state following this instruction is consistent with the new event. (2) Immediately before writing to the PMCR, so that any previous writes to the PMU have taken effect before (typically) enabling the counters. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-03-25 12:12:23 +00:00
isb();
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
return idx;
}
static inline u32 armv7pmu_read_counter(int idx)
{
ARM: perf: use u32 instead of unsigned long for PMNC register The ARMv7 perf backend mixes up u32 and unsigned long, which is rather ugly. This patch makes the ARMv7 PMU code consistently use the u32 type instead. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 13:55:57 +00:00
u32 value = 0;
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
if (!armv7_pmnc_counter_valid(idx))
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
pr_err("CPU%u reading wrong counter %d\n",
smp_processor_id(), idx);
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
else if (idx == ARMV7_IDX_CYCLE_COUNTER)
asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (value));
else if (armv7_pmnc_select_counter(idx) == idx)
asm volatile("mrc p15, 0, %0, c9, c13, 2" : "=r" (value));
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
return value;
}
static inline void armv7pmu_write_counter(int idx, u32 value)
{
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
if (!armv7_pmnc_counter_valid(idx))
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
pr_err("CPU%u writing wrong counter %d\n",
smp_processor_id(), idx);
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
else if (idx == ARMV7_IDX_CYCLE_COUNTER)
asm volatile("mcr p15, 0, %0, c9, c13, 0" : : "r" (value));
else if (armv7_pmnc_select_counter(idx) == idx)
asm volatile("mcr p15, 0, %0, c9, c13, 2" : : "r" (value));
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
}
ARM: perf: use integers for ARMv7 event indices This patch ensures that integers are used to represent event indices in the ARMv7 PMU backend. This ensures consistency between functions and also with the arm_pmu structure. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:17:48 +00:00
static inline void armv7_pmnc_write_evtsel(int idx, u32 val)
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
{
if (armv7_pmnc_select_counter(idx) == idx) {
ARM: perf: add mode exclusion for Cortex-A15 PMU The Cortex-A15 PMU implements the PMUv2 specification and therefore has support for some mode exclusion. This patch adds support for excluding user, kernel and hypervisor counts from a given event. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 12:53:36 +00:00
val &= ARMV7_EVTYPE_MASK;
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
asm volatile("mcr p15, 0, %0, c9, c13, 1" : : "r" (val));
}
}
ARM: perf: use integers for ARMv7 event indices This patch ensures that integers are used to represent event indices in the ARMv7 PMU backend. This ensures consistency between functions and also with the arm_pmu structure. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:17:48 +00:00
static inline int armv7_pmnc_enable_counter(int idx)
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
{
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
u32 counter;
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
if (!armv7_pmnc_counter_valid(idx)) {
pr_err("CPU%u enabling wrong PMNC counter %d\n",
smp_processor_id(), idx);
return -EINVAL;
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
}
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
counter = ARMV7_IDX_TO_COUNTER(idx);
asm volatile("mcr p15, 0, %0, c9, c12, 1" : : "r" (BIT(counter)));
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
return idx;
}
ARM: perf: use integers for ARMv7 event indices This patch ensures that integers are used to represent event indices in the ARMv7 PMU backend. This ensures consistency between functions and also with the arm_pmu structure. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:17:48 +00:00
static inline int armv7_pmnc_disable_counter(int idx)
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
{
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
u32 counter;
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
if (!armv7_pmnc_counter_valid(idx)) {
pr_err("CPU%u disabling wrong PMNC counter %d\n",
smp_processor_id(), idx);
return -EINVAL;
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
}
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
counter = ARMV7_IDX_TO_COUNTER(idx);
asm volatile("mcr p15, 0, %0, c9, c12, 2" : : "r" (BIT(counter)));
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
return idx;
}
ARM: perf: use integers for ARMv7 event indices This patch ensures that integers are used to represent event indices in the ARMv7 PMU backend. This ensures consistency between functions and also with the arm_pmu structure. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:17:48 +00:00
static inline int armv7_pmnc_enable_intens(int idx)
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
{
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
u32 counter;
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
if (!armv7_pmnc_counter_valid(idx)) {
pr_err("CPU%u enabling wrong PMNC counter IRQ enable %d\n",
smp_processor_id(), idx);
return -EINVAL;
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
}
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
counter = ARMV7_IDX_TO_COUNTER(idx);
asm volatile("mcr p15, 0, %0, c9, c14, 1" : : "r" (BIT(counter)));
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
return idx;
}
ARM: perf: use integers for ARMv7 event indices This patch ensures that integers are used to represent event indices in the ARMv7 PMU backend. This ensures consistency between functions and also with the arm_pmu structure. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:17:48 +00:00
static inline int armv7_pmnc_disable_intens(int idx)
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
{
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
u32 counter;
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
if (!armv7_pmnc_counter_valid(idx)) {
pr_err("CPU%u disabling wrong PMNC counter IRQ enable %d\n",
smp_processor_id(), idx);
return -EINVAL;
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
}
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
counter = ARMV7_IDX_TO_COUNTER(idx);
asm volatile("mcr p15, 0, %0, c9, c14, 2" : : "r" (BIT(counter)));
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
return idx;
}
static inline u32 armv7_pmnc_getreset_flags(void)
{
u32 val;
/* Read */
asm volatile("mrc p15, 0, %0, c9, c12, 3" : "=r" (val));
/* Write to clear flags */
val &= ARMV7_FLAG_MASK;
asm volatile("mcr p15, 0, %0, c9, c12, 3" : : "r" (val));
return val;
}
#ifdef DEBUG
static void armv7_pmnc_dump_regs(void)
{
u32 val;
unsigned int cnt;
printk(KERN_INFO "PMNC registers dump:\n");
asm volatile("mrc p15, 0, %0, c9, c12, 0" : "=r" (val));
printk(KERN_INFO "PMNC =0x%08x\n", val);
asm volatile("mrc p15, 0, %0, c9, c12, 1" : "=r" (val));
printk(KERN_INFO "CNTENS=0x%08x\n", val);
asm volatile("mrc p15, 0, %0, c9, c14, 1" : "=r" (val));
printk(KERN_INFO "INTENS=0x%08x\n", val);
asm volatile("mrc p15, 0, %0, c9, c12, 3" : "=r" (val));
printk(KERN_INFO "FLAGS =0x%08x\n", val);
asm volatile("mrc p15, 0, %0, c9, c12, 5" : "=r" (val));
printk(KERN_INFO "SELECT=0x%08x\n", val);
asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (val));
printk(KERN_INFO "CCNT =0x%08x\n", val);
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
for (cnt = ARMV7_IDX_COUNTER0; cnt <= ARMV7_IDX_COUNTER_LAST; cnt++) {
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
armv7_pmnc_select_counter(cnt);
asm volatile("mrc p15, 0, %0, c9, c13, 2" : "=r" (val));
printk(KERN_INFO "CNT[%d] count =0x%08x\n",
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
ARMV7_IDX_TO_COUNTER(cnt), val);
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
asm volatile("mrc p15, 0, %0, c9, c13, 1" : "=r" (val));
printk(KERN_INFO "CNT[%d] evtsel=0x%08x\n",
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
ARMV7_IDX_TO_COUNTER(cnt), val);
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
}
}
#endif
ARM: 6512/1: perf: fix warnings generated by sparse Russell reported a number of warnings coming from sparse when checking the ARM perf_event.c files: | perf_event.c seems to also have problems too: | | CHECK arch/arm/kernel/perf_event.c | arch/arm/kernel/perf_event.c:37:1: warning: symbol 'pmu_lock' was not declared. Should it be static? | arch/arm/kernel/perf_event.c:70:1: warning: symbol 'cpu_hw_events' was not declared. Should it be static? | arch/arm/kernel/perf_event.c:1006:1: warning: symbol 'armv6pmu_enable_event' was not declared. Should it be static? | arch/arm/kernel/perf_event.c:1113:1: warning: symbol 'armv6pmu_stop' was not declared. Should it be static? | arch/arm/kernel/perf_event.c:1956:6: warning: symbol 'armv7pmu_enable_event' was not declared. Should it be static? | arch/arm/kernel/perf_event.c:3072:14: warning: incorrect type in argument 1 (different address spaces) | arch/arm/kernel/perf_event.c:3072:14: expected void const volatile [noderef] <asn:1>*<noident> | arch/arm/kernel/perf_event.c:3072:14: got struct frame_tail *tail | arch/arm/kernel/perf_event.c:3074:49: warning: incorrect type in argument 2 (different address spaces) | arch/arm/kernel/perf_event.c:3074:49: expected void const [noderef] <asn:1>*from | arch/arm/kernel/perf_event.c:3074:49: got struct frame_tail *tail This patch resolves these issues so we can live in silence again. Reported-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-11-30 17:15:53 +00:00
static void armv7pmu_enable_event(struct hw_perf_event *hwc, int idx)
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
{
unsigned long flags;
ARM: perf: remove cpu-related misnomers Currently struct cpu_hw_events stores data on events running on a PMU associated with a CPU. As this data is general enough to be used for system PMUs, this name is a misnomer, and may cause confusion when it is used for system PMUs. Additionally, 'armpmu' is commonly used as a parameter name for an instance of struct arm_pmu. The name is also used for a global instance which represents the CPU's PMU. As cpu_hw_events is now not tied to CPU PMUs, it is renamed to pmu_hw_events, with instances of it renamed similarly. As the global 'armpmu' is CPU-specfic, it is renamed to cpu_pmu. This should make it clearer which code is generic, and which is coupled with the CPU. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-05-17 10:20:11 +00:00
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
/*
* Enable counter and interrupt, and set the counter to count
* the event that we're interested in.
*/
ARM: perf: lock PMU registers per-CPU Currently, a single lock serialises access to CPU PMU registers. This global locking is unnecessary as PMU registers are local to the CPU they monitor. This patch replaces the global lock with a per-CPU lock. As the lock is in struct cpu_hw_events, PMUs providing a single cpu_hw_events instance can be locked globally. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-04-28 09:17:04 +00:00
raw_spin_lock_irqsave(&events->pmu_lock, flags);
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
/*
* Disable counter
*/
armv7_pmnc_disable_counter(idx);
/*
* Set event (if destined for PMNx counters)
ARM: perf: add mode exclusion for Cortex-A15 PMU The Cortex-A15 PMU implements the PMUv2 specification and therefore has support for some mode exclusion. This patch adds support for excluding user, kernel and hypervisor counts from a given event. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 12:53:36 +00:00
* We only need to set the event for the cycle counter if we
* have the ability to perform event filtering.
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
*/
ARM: perf: add mode exclusion for Cortex-A15 PMU The Cortex-A15 PMU implements the PMUv2 specification and therefore has support for some mode exclusion. This patch adds support for excluding user, kernel and hypervisor counts from a given event. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 12:53:36 +00:00
if (armv7pmu.set_event_filter || idx != ARMV7_IDX_CYCLE_COUNTER)
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
armv7_pmnc_write_evtsel(idx, hwc->config_base);
/*
* Enable interrupt for this counter
*/
armv7_pmnc_enable_intens(idx);
/*
* Enable counter
*/
armv7_pmnc_enable_counter(idx);
ARM: perf: lock PMU registers per-CPU Currently, a single lock serialises access to CPU PMU registers. This global locking is unnecessary as PMU registers are local to the CPU they monitor. This patch replaces the global lock with a per-CPU lock. As the lock is in struct cpu_hw_events, PMUs providing a single cpu_hw_events instance can be locked globally. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-04-28 09:17:04 +00:00
raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
}
static void armv7pmu_disable_event(struct hw_perf_event *hwc, int idx)
{
unsigned long flags;
ARM: perf: remove cpu-related misnomers Currently struct cpu_hw_events stores data on events running on a PMU associated with a CPU. As this data is general enough to be used for system PMUs, this name is a misnomer, and may cause confusion when it is used for system PMUs. Additionally, 'armpmu' is commonly used as a parameter name for an instance of struct arm_pmu. The name is also used for a global instance which represents the CPU's PMU. As cpu_hw_events is now not tied to CPU PMUs, it is renamed to pmu_hw_events, with instances of it renamed similarly. As the global 'armpmu' is CPU-specfic, it is renamed to cpu_pmu. This should make it clearer which code is generic, and which is coupled with the CPU. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-05-17 10:20:11 +00:00
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
/*
* Disable counter and interrupt
*/
ARM: perf: lock PMU registers per-CPU Currently, a single lock serialises access to CPU PMU registers. This global locking is unnecessary as PMU registers are local to the CPU they monitor. This patch replaces the global lock with a per-CPU lock. As the lock is in struct cpu_hw_events, PMUs providing a single cpu_hw_events instance can be locked globally. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-04-28 09:17:04 +00:00
raw_spin_lock_irqsave(&events->pmu_lock, flags);
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
/*
* Disable counter
*/
armv7_pmnc_disable_counter(idx);
/*
* Disable interrupt for this counter
*/
armv7_pmnc_disable_intens(idx);
ARM: perf: lock PMU registers per-CPU Currently, a single lock serialises access to CPU PMU registers. This global locking is unnecessary as PMU registers are local to the CPU they monitor. This patch replaces the global lock with a per-CPU lock. As the lock is in struct cpu_hw_events, PMUs providing a single cpu_hw_events instance can be locked globally. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-04-28 09:17:04 +00:00
raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
}
static irqreturn_t armv7pmu_handle_irq(int irq_num, void *dev)
{
ARM: perf: use u32 instead of unsigned long for PMNC register The ARMv7 perf backend mixes up u32 and unsigned long, which is rather ugly. This patch makes the ARMv7 PMU code consistently use the u32 type instead. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 13:55:57 +00:00
u32 pmnc;
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
struct perf_sample_data data;
ARM: perf: remove cpu-related misnomers Currently struct cpu_hw_events stores data on events running on a PMU associated with a CPU. As this data is general enough to be used for system PMUs, this name is a misnomer, and may cause confusion when it is used for system PMUs. Additionally, 'armpmu' is commonly used as a parameter name for an instance of struct arm_pmu. The name is also used for a global instance which represents the CPU's PMU. As cpu_hw_events is now not tied to CPU PMUs, it is renamed to pmu_hw_events, with instances of it renamed similarly. As the global 'armpmu' is CPU-specfic, it is renamed to cpu_pmu. This should make it clearer which code is generic, and which is coupled with the CPU. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-05-17 10:20:11 +00:00
struct pmu_hw_events *cpuc;
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
struct pt_regs *regs;
int idx;
/*
* Get and reset the IRQ flags
*/
pmnc = armv7_pmnc_getreset_flags();
/*
* Did an overflow occur?
*/
if (!armv7_pmnc_has_overflowed(pmnc))
return IRQ_NONE;
/*
* Handle the counter(s) overflow(s)
*/
regs = get_irq_regs();
perf_sample_data_init(&data, 0);
cpuc = &__get_cpu_var(cpu_hw_events);
ARM: perf: remove cpu-related misnomers Currently struct cpu_hw_events stores data on events running on a PMU associated with a CPU. As this data is general enough to be used for system PMUs, this name is a misnomer, and may cause confusion when it is used for system PMUs. Additionally, 'armpmu' is commonly used as a parameter name for an instance of struct arm_pmu. The name is also used for a global instance which represents the CPU's PMU. As cpu_hw_events is now not tied to CPU PMUs, it is renamed to pmu_hw_events, with instances of it renamed similarly. As the global 'armpmu' is CPU-specfic, it is renamed to cpu_pmu. This should make it clearer which code is generic, and which is coupled with the CPU. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-05-17 10:20:11 +00:00
for (idx = 0; idx < cpu_pmu->num_events; ++idx) {
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
struct perf_event *event = cpuc->events[idx];
struct hw_perf_event *hwc;
/*
* We have a single interrupt for all counters. Check that
* each counter has overflowed before we process it.
*/
if (!armv7_pmnc_counter_has_overflowed(pmnc, idx))
continue;
hwc = &event->hw;
ARM: 6835/1: perf: ensure overflows aren't missed due to IRQ latency If a counter overflows during a perf stat profiling run it may overtake the last known value of the counter: 0 prev new 0xffffffff |----------|-------|----------------------| In this case, the number of events that have occurred is (0xffffffff - prev) + new. Unfortunately, the event update code will not realise an overflow has occurred and will instead report the event delta as (new - prev) which may be considerably smaller than the real count. This patch adds an extra argument to armpmu_event_update which indicates whether or not an overflow has occurred. If an overflow has occurred then we use the maximum period of the counter to calculate the elapsed events. Acked-by: Jamie Iles <jamie@jamieiles.com> Reported-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-03-25 16:12:37 +00:00
armpmu_event_update(event, hwc, idx, 1);
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
data.period = event->hw.last_period;
if (!armpmu_event_set_period(event, hwc, idx))
continue;
perf: Remove the nmi parameter from the swevent and overflow interface The nmi parameter indicated if we could do wakeups from the current context, if not, we would set some state and self-IPI and let the resulting interrupt do the wakeup. For the various event classes: - hardware: nmi=0; PMI is in fact an NMI or we run irq_work_run from the PMI-tail (ARM etc.) - tracepoint: nmi=0; since tracepoint could be from NMI context. - software: nmi=[0,1]; some, like the schedule thing cannot perform wakeups, and hence need 0. As one can see, there is very little nmi=1 usage, and the down-side of not using it is that on some platforms some software events can have a jiffy delay in wakeup (when arch_irq_work_raise isn't implemented). The up-side however is that we can remove the nmi parameter and save a bunch of conditionals in fast paths. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Michael Cree <mcree@orcon.net.nz> Cc: Will Deacon <will.deacon@arm.com> Cc: Deng-Cheng Zhu <dengcheng.zhu@gmail.com> Cc: Anton Blanchard <anton@samba.org> Cc: Eric B Munson <emunson@mgebm.net> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: David S. Miller <davem@davemloft.net> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Don Zickus <dzickus@redhat.com> Link: http://lkml.kernel.org/n/tip-agjev8eu666tvknpb3iaj0fg@git.kernel.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-06-27 12:41:57 +00:00
if (perf_event_overflow(event, &data, regs))
ARM: perf: remove cpu-related misnomers Currently struct cpu_hw_events stores data on events running on a PMU associated with a CPU. As this data is general enough to be used for system PMUs, this name is a misnomer, and may cause confusion when it is used for system PMUs. Additionally, 'armpmu' is commonly used as a parameter name for an instance of struct arm_pmu. The name is also used for a global instance which represents the CPU's PMU. As cpu_hw_events is now not tied to CPU PMUs, it is renamed to pmu_hw_events, with instances of it renamed similarly. As the global 'armpmu' is CPU-specfic, it is renamed to cpu_pmu. This should make it clearer which code is generic, and which is coupled with the CPU. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-05-17 10:20:11 +00:00
cpu_pmu->disable(hwc, idx);
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
}
/*
* Handle the pending perf events.
*
* Note: this call *must* be run with interrupts disabled. For
* platforms that can have the PMU interrupts raised as an NMI, this
* will not work.
*/
irq_work_run();
return IRQ_HANDLED;
}
static void armv7pmu_start(void)
{
unsigned long flags;
ARM: perf: remove cpu-related misnomers Currently struct cpu_hw_events stores data on events running on a PMU associated with a CPU. As this data is general enough to be used for system PMUs, this name is a misnomer, and may cause confusion when it is used for system PMUs. Additionally, 'armpmu' is commonly used as a parameter name for an instance of struct arm_pmu. The name is also used for a global instance which represents the CPU's PMU. As cpu_hw_events is now not tied to CPU PMUs, it is renamed to pmu_hw_events, with instances of it renamed similarly. As the global 'armpmu' is CPU-specfic, it is renamed to cpu_pmu. This should make it clearer which code is generic, and which is coupled with the CPU. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-05-17 10:20:11 +00:00
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
ARM: perf: lock PMU registers per-CPU Currently, a single lock serialises access to CPU PMU registers. This global locking is unnecessary as PMU registers are local to the CPU they monitor. This patch replaces the global lock with a per-CPU lock. As the lock is in struct cpu_hw_events, PMUs providing a single cpu_hw_events instance can be locked globally. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-04-28 09:17:04 +00:00
raw_spin_lock_irqsave(&events->pmu_lock, flags);
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
/* Enable all counters */
armv7_pmnc_write(armv7_pmnc_read() | ARMV7_PMNC_E);
ARM: perf: lock PMU registers per-CPU Currently, a single lock serialises access to CPU PMU registers. This global locking is unnecessary as PMU registers are local to the CPU they monitor. This patch replaces the global lock with a per-CPU lock. As the lock is in struct cpu_hw_events, PMUs providing a single cpu_hw_events instance can be locked globally. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-04-28 09:17:04 +00:00
raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
}
static void armv7pmu_stop(void)
{
unsigned long flags;
ARM: perf: remove cpu-related misnomers Currently struct cpu_hw_events stores data on events running on a PMU associated with a CPU. As this data is general enough to be used for system PMUs, this name is a misnomer, and may cause confusion when it is used for system PMUs. Additionally, 'armpmu' is commonly used as a parameter name for an instance of struct arm_pmu. The name is also used for a global instance which represents the CPU's PMU. As cpu_hw_events is now not tied to CPU PMUs, it is renamed to pmu_hw_events, with instances of it renamed similarly. As the global 'armpmu' is CPU-specfic, it is renamed to cpu_pmu. This should make it clearer which code is generic, and which is coupled with the CPU. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-05-17 10:20:11 +00:00
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
ARM: perf: lock PMU registers per-CPU Currently, a single lock serialises access to CPU PMU registers. This global locking is unnecessary as PMU registers are local to the CPU they monitor. This patch replaces the global lock with a per-CPU lock. As the lock is in struct cpu_hw_events, PMUs providing a single cpu_hw_events instance can be locked globally. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-04-28 09:17:04 +00:00
raw_spin_lock_irqsave(&events->pmu_lock, flags);
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
/* Disable all counters */
armv7_pmnc_write(armv7_pmnc_read() & ~ARMV7_PMNC_E);
ARM: perf: lock PMU registers per-CPU Currently, a single lock serialises access to CPU PMU registers. This global locking is unnecessary as PMU registers are local to the CPU they monitor. This patch replaces the global lock with a per-CPU lock. As the lock is in struct cpu_hw_events, PMUs providing a single cpu_hw_events instance can be locked globally. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-04-28 09:17:04 +00:00
raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
}
ARM: perf: remove cpu-related misnomers Currently struct cpu_hw_events stores data on events running on a PMU associated with a CPU. As this data is general enough to be used for system PMUs, this name is a misnomer, and may cause confusion when it is used for system PMUs. Additionally, 'armpmu' is commonly used as a parameter name for an instance of struct arm_pmu. The name is also used for a global instance which represents the CPU's PMU. As cpu_hw_events is now not tied to CPU PMUs, it is renamed to pmu_hw_events, with instances of it renamed similarly. As the global 'armpmu' is CPU-specfic, it is renamed to cpu_pmu. This should make it clearer which code is generic, and which is coupled with the CPU. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-05-17 10:20:11 +00:00
static int armv7pmu_get_event_idx(struct pmu_hw_events *cpuc,
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
struct hw_perf_event *event)
{
int idx;
ARM: perf: add mode exclusion for Cortex-A15 PMU The Cortex-A15 PMU implements the PMUv2 specification and therefore has support for some mode exclusion. This patch adds support for excluding user, kernel and hypervisor counts from a given event. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 12:53:36 +00:00
unsigned long evtype = event->config_base & ARMV7_EVTYPE_EVENT;
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
/* Always place a cycle counter into the cycle counter. */
ARM: perf: add mode exclusion for Cortex-A15 PMU The Cortex-A15 PMU implements the PMUv2 specification and therefore has support for some mode exclusion. This patch adds support for excluding user, kernel and hypervisor counts from a given event. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 12:53:36 +00:00
if (evtype == ARMV7_PERFCTR_CPU_CYCLES) {
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
if (test_and_set_bit(ARMV7_IDX_CYCLE_COUNTER, cpuc->used_mask))
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
return -EAGAIN;
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
return ARMV7_IDX_CYCLE_COUNTER;
}
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
/*
* For anything other than a cycle counter, try and use
* the events counters
*/
ARM: perf: remove cpu-related misnomers Currently struct cpu_hw_events stores data on events running on a PMU associated with a CPU. As this data is general enough to be used for system PMUs, this name is a misnomer, and may cause confusion when it is used for system PMUs. Additionally, 'armpmu' is commonly used as a parameter name for an instance of struct arm_pmu. The name is also used for a global instance which represents the CPU's PMU. As cpu_hw_events is now not tied to CPU PMUs, it is renamed to pmu_hw_events, with instances of it renamed similarly. As the global 'armpmu' is CPU-specfic, it is renamed to cpu_pmu. This should make it clearer which code is generic, and which is coupled with the CPU. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-05-17 10:20:11 +00:00
for (idx = ARMV7_IDX_COUNTER0; idx < cpu_pmu->num_events; ++idx) {
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
if (!test_and_set_bit(idx, cpuc->used_mask))
return idx;
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
}
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
/* The counters are all in use. */
return -EAGAIN;
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
}
ARM: perf: add mode exclusion for Cortex-A15 PMU The Cortex-A15 PMU implements the PMUv2 specification and therefore has support for some mode exclusion. This patch adds support for excluding user, kernel and hypervisor counts from a given event. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 12:53:36 +00:00
/*
* Add an event filter to a given event. This will only work for PMUv2 PMUs.
*/
static int armv7pmu_set_event_filter(struct hw_perf_event *event,
struct perf_event_attr *attr)
{
unsigned long config_base = 0;
if (attr->exclude_idle)
return -EPERM;
if (attr->exclude_user)
config_base |= ARMV7_EXCLUDE_USER;
if (attr->exclude_kernel)
config_base |= ARMV7_EXCLUDE_PL1;
if (!attr->exclude_hv)
config_base |= ARMV7_INCLUDE_HYP;
/*
* Install the filter into config_base as this is used to
* construct the event type.
*/
event->config_base = config_base;
return 0;
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
}
ARM: 6834/1: perf: reset counters on all CPUs during initialisation ARMv7 dictates that the interrupt-enable and count-enable registers for each PMU counter are UNKNOWN following core reset. This patch adds a new (optional) function pointer to struct arm_pmu for resetting the PMU state during init. The reset function is called on each CPU via an arch_initcall in the generic ARM perf_event code and allows the PMU backend to write sane values to any UNKNOWN registers. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-03-25 12:13:34 +00:00
static void armv7pmu_reset(void *info)
{
ARM: perf: remove cpu-related misnomers Currently struct cpu_hw_events stores data on events running on a PMU associated with a CPU. As this data is general enough to be used for system PMUs, this name is a misnomer, and may cause confusion when it is used for system PMUs. Additionally, 'armpmu' is commonly used as a parameter name for an instance of struct arm_pmu. The name is also used for a global instance which represents the CPU's PMU. As cpu_hw_events is now not tied to CPU PMUs, it is renamed to pmu_hw_events, with instances of it renamed similarly. As the global 'armpmu' is CPU-specfic, it is renamed to cpu_pmu. This should make it clearer which code is generic, and which is coupled with the CPU. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-05-17 10:20:11 +00:00
u32 idx, nb_cnt = cpu_pmu->num_events;
ARM: 6834/1: perf: reset counters on all CPUs during initialisation ARMv7 dictates that the interrupt-enable and count-enable registers for each PMU counter are UNKNOWN following core reset. This patch adds a new (optional) function pointer to struct arm_pmu for resetting the PMU state during init. The reset function is called on each CPU via an arch_initcall in the generic ARM perf_event code and allows the PMU backend to write sane values to any UNKNOWN registers. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-03-25 12:13:34 +00:00
/* The counter and interrupt enable registers are unknown at reset. */
ARM: perf: index ARMv7 event counters starting from zero The current ARMv7 PMU backend indexes event counters from two, with index zero being reserved and index one being used to represent the cycle counter. This patch tidies up the code by indexing from one instead (with zero for the cycle counter). This allows us to remove many of the accessor macros along with the counter enumeration and makes the code much more readable. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 21:25:55 +00:00
for (idx = ARMV7_IDX_CYCLE_COUNTER; idx < nb_cnt; ++idx)
ARM: 6834/1: perf: reset counters on all CPUs during initialisation ARMv7 dictates that the interrupt-enable and count-enable registers for each PMU counter are UNKNOWN following core reset. This patch adds a new (optional) function pointer to struct arm_pmu for resetting the PMU state during init. The reset function is called on each CPU via an arch_initcall in the generic ARM perf_event code and allows the PMU backend to write sane values to any UNKNOWN registers. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-03-25 12:13:34 +00:00
armv7pmu_disable_event(NULL, idx);
/* Initialize & Reset PMNC: C and P bits */
armv7_pmnc_write(ARMV7_PMNC_P | ARMV7_PMNC_C);
}
ARM: perf: refactor event mapping Currently mapping an event type to a hardware configuration value depends on the data being pointed to from struct arm_pmu. These fields (cache_map, event_map, raw_event_mask) are currently specific to CPU PMUs, and do not serve the general case well. This patch replaces the event map pointers on struct arm_pmu with a new 'map_event' function pointer. Small shim functions are used to reuse the existing common code. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-04-28 14:47:10 +00:00
static int armv7_a8_map_event(struct perf_event *event)
{
return map_cpu_event(event, &armv7_a8_perf_map,
&armv7_a8_perf_cache_map, 0xFF);
}
static int armv7_a9_map_event(struct perf_event *event)
{
return map_cpu_event(event, &armv7_a9_perf_map,
&armv7_a9_perf_cache_map, 0xFF);
}
static int armv7_a5_map_event(struct perf_event *event)
{
return map_cpu_event(event, &armv7_a5_perf_map,
&armv7_a5_perf_cache_map, 0xFF);
}
static int armv7_a15_map_event(struct perf_event *event)
{
return map_cpu_event(event, &armv7_a15_perf_map,
&armv7_a15_perf_cache_map, 0xFF);
}
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
static struct arm_pmu armv7pmu = {
.handle_irq = armv7pmu_handle_irq,
.enable = armv7pmu_enable_event,
.disable = armv7pmu_disable_event,
.read_counter = armv7pmu_read_counter,
.write_counter = armv7pmu_write_counter,
.get_event_idx = armv7pmu_get_event_idx,
.start = armv7pmu_start,
.stop = armv7pmu_stop,
ARM: 6834/1: perf: reset counters on all CPUs during initialisation ARMv7 dictates that the interrupt-enable and count-enable registers for each PMU counter are UNKNOWN following core reset. This patch adds a new (optional) function pointer to struct arm_pmu for resetting the PMU state during init. The reset function is called on each CPU via an arch_initcall in the generic ARM perf_event code and allows the PMU backend to write sane values to any UNKNOWN registers. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-03-25 12:13:34 +00:00
.reset = armv7pmu_reset,
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
.max_period = (1LLU << 32) - 1,
};
ARM: 6834/1: perf: reset counters on all CPUs during initialisation ARMv7 dictates that the interrupt-enable and count-enable registers for each PMU counter are UNKNOWN following core reset. This patch adds a new (optional) function pointer to struct arm_pmu for resetting the PMU state during init. The reset function is called on each CPU via an arch_initcall in the generic ARM perf_event code and allows the PMU backend to write sane values to any UNKNOWN registers. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-03-25 12:13:34 +00:00
static u32 __init armv7_read_num_pmnc_events(void)
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
{
u32 nb_cnt;
/* Read the nb of CNTx counters supported from PMNC */
nb_cnt = (armv7_pmnc_read() >> ARMV7_PMNC_N_SHIFT) & ARMV7_PMNC_N_MASK;
/* Add the CPU cycles counter and return */
return nb_cnt + 1;
}
ARM: perf: de-const struct arm_pmu This patch removes const qualifiers from instances of struct arm_pmu, and functions initialising them, in preparation for generalising arm_pmu usage to system (AKA uncore) PMUs. This will allow for dynamically modifiable structures (locks, struct pmu) to be added as members of struct arm_pmu. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-04-15 10:14:38 +00:00
static struct arm_pmu *__init armv7_a8_pmu_init(void)
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
{
armv7pmu.id = ARM_PERF_PMU_ID_CA8;
armv7pmu.name = "ARMv7 Cortex-A8";
ARM: perf: refactor event mapping Currently mapping an event type to a hardware configuration value depends on the data being pointed to from struct arm_pmu. These fields (cache_map, event_map, raw_event_mask) are currently specific to CPU PMUs, and do not serve the general case well. This patch replaces the event map pointers on struct arm_pmu with a new 'map_event' function pointer. Small shim functions are used to reuse the existing common code. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-04-28 14:47:10 +00:00
armv7pmu.map_event = armv7_a8_map_event;
ARM: 6834/1: perf: reset counters on all CPUs during initialisation ARMv7 dictates that the interrupt-enable and count-enable registers for each PMU counter are UNKNOWN following core reset. This patch adds a new (optional) function pointer to struct arm_pmu for resetting the PMU state during init. The reset function is called on each CPU via an arch_initcall in the generic ARM perf_event code and allows the PMU backend to write sane values to any UNKNOWN registers. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-03-25 12:13:34 +00:00
armv7pmu.num_events = armv7_read_num_pmnc_events();
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
return &armv7pmu;
}
ARM: perf: de-const struct arm_pmu This patch removes const qualifiers from instances of struct arm_pmu, and functions initialising them, in preparation for generalising arm_pmu usage to system (AKA uncore) PMUs. This will allow for dynamically modifiable structures (locks, struct pmu) to be added as members of struct arm_pmu. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-04-15 10:14:38 +00:00
static struct arm_pmu *__init armv7_a9_pmu_init(void)
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
{
armv7pmu.id = ARM_PERF_PMU_ID_CA9;
armv7pmu.name = "ARMv7 Cortex-A9";
ARM: perf: refactor event mapping Currently mapping an event type to a hardware configuration value depends on the data being pointed to from struct arm_pmu. These fields (cache_map, event_map, raw_event_mask) are currently specific to CPU PMUs, and do not serve the general case well. This patch replaces the event map pointers on struct arm_pmu with a new 'map_event' function pointer. Small shim functions are used to reuse the existing common code. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-04-28 14:47:10 +00:00
armv7pmu.map_event = armv7_a9_map_event;
ARM: 6834/1: perf: reset counters on all CPUs during initialisation ARMv7 dictates that the interrupt-enable and count-enable registers for each PMU counter are UNKNOWN following core reset. This patch adds a new (optional) function pointer to struct arm_pmu for resetting the PMU state during init. The reset function is called on each CPU via an arch_initcall in the generic ARM perf_event code and allows the PMU backend to write sane values to any UNKNOWN registers. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-03-25 12:13:34 +00:00
armv7pmu.num_events = armv7_read_num_pmnc_events();
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
return &armv7pmu;
}
ARM: perf: add support for the Cortex-A5 PMU This patch adds support for the Cortex-A5 PMU to the ARMv7 perf-event backend. Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-06-03 16:40:15 +00:00
ARM: perf: de-const struct arm_pmu This patch removes const qualifiers from instances of struct arm_pmu, and functions initialising them, in preparation for generalising arm_pmu usage to system (AKA uncore) PMUs. This will allow for dynamically modifiable structures (locks, struct pmu) to be added as members of struct arm_pmu. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-04-15 10:14:38 +00:00
static struct arm_pmu *__init armv7_a5_pmu_init(void)
ARM: perf: add support for the Cortex-A5 PMU This patch adds support for the Cortex-A5 PMU to the ARMv7 perf-event backend. Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-06-03 16:40:15 +00:00
{
armv7pmu.id = ARM_PERF_PMU_ID_CA5;
armv7pmu.name = "ARMv7 Cortex-A5";
ARM: perf: refactor event mapping Currently mapping an event type to a hardware configuration value depends on the data being pointed to from struct arm_pmu. These fields (cache_map, event_map, raw_event_mask) are currently specific to CPU PMUs, and do not serve the general case well. This patch replaces the event map pointers on struct arm_pmu with a new 'map_event' function pointer. Small shim functions are used to reuse the existing common code. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-04-28 14:47:10 +00:00
armv7pmu.map_event = armv7_a5_map_event;
ARM: perf: add support for the Cortex-A5 PMU This patch adds support for the Cortex-A5 PMU to the ARMv7 perf-event backend. Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-06-03 16:40:15 +00:00
armv7pmu.num_events = armv7_read_num_pmnc_events();
return &armv7pmu;
}
ARM: perf: add support for the Cortex-A15 PMU This patch adds support for the Cortex-A15 PMU to the ARMv7 perf-event backend. Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-01-19 14:24:38 +00:00
ARM: perf: de-const struct arm_pmu This patch removes const qualifiers from instances of struct arm_pmu, and functions initialising them, in preparation for generalising arm_pmu usage to system (AKA uncore) PMUs. This will allow for dynamically modifiable structures (locks, struct pmu) to be added as members of struct arm_pmu. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-04-15 10:14:38 +00:00
static struct arm_pmu *__init armv7_a15_pmu_init(void)
ARM: perf: add support for the Cortex-A15 PMU This patch adds support for the Cortex-A15 PMU to the ARMv7 perf-event backend. Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-01-19 14:24:38 +00:00
{
armv7pmu.id = ARM_PERF_PMU_ID_CA15;
armv7pmu.name = "ARMv7 Cortex-A15";
ARM: perf: refactor event mapping Currently mapping an event type to a hardware configuration value depends on the data being pointed to from struct arm_pmu. These fields (cache_map, event_map, raw_event_mask) are currently specific to CPU PMUs, and do not serve the general case well. This patch replaces the event map pointers on struct arm_pmu with a new 'map_event' function pointer. Small shim functions are used to reuse the existing common code. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-04-28 14:47:10 +00:00
armv7pmu.map_event = armv7_a15_map_event;
ARM: perf: add support for the Cortex-A15 PMU This patch adds support for the Cortex-A15 PMU to the ARMv7 perf-event backend. Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-01-19 14:24:38 +00:00
armv7pmu.num_events = armv7_read_num_pmnc_events();
ARM: perf: add mode exclusion for Cortex-A15 PMU The Cortex-A15 PMU implements the PMUv2 specification and therefore has support for some mode exclusion. This patch adds support for excluding user, kernel and hypervisor counts from a given event. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-19 12:53:36 +00:00
armv7pmu.set_event_filter = armv7pmu_set_event_filter;
ARM: perf: add support for the Cortex-A15 PMU This patch adds support for the Cortex-A15 PMU to the ARMv7 perf-event backend. Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-01-19 14:24:38 +00:00
return &armv7pmu;
}
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
#else
ARM: perf: de-const struct arm_pmu This patch removes const qualifiers from instances of struct arm_pmu, and functions initialising them, in preparation for generalising arm_pmu usage to system (AKA uncore) PMUs. This will allow for dynamically modifiable structures (locks, struct pmu) to be added as members of struct arm_pmu. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-04-15 10:14:38 +00:00
static struct arm_pmu *__init armv7_a8_pmu_init(void)
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
{
return NULL;
}
ARM: perf: de-const struct arm_pmu This patch removes const qualifiers from instances of struct arm_pmu, and functions initialising them, in preparation for generalising arm_pmu usage to system (AKA uncore) PMUs. This will allow for dynamically modifiable structures (locks, struct pmu) to be added as members of struct arm_pmu. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-04-15 10:14:38 +00:00
static struct arm_pmu *__init armv7_a9_pmu_init(void)
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
{
return NULL;
}
ARM: perf: add support for the Cortex-A5 PMU This patch adds support for the Cortex-A5 PMU to the ARMv7 perf-event backend. Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-06-03 16:40:15 +00:00
ARM: perf: de-const struct arm_pmu This patch removes const qualifiers from instances of struct arm_pmu, and functions initialising them, in preparation for generalising arm_pmu usage to system (AKA uncore) PMUs. This will allow for dynamically modifiable structures (locks, struct pmu) to be added as members of struct arm_pmu. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-04-15 10:14:38 +00:00
static struct arm_pmu *__init armv7_a5_pmu_init(void)
ARM: perf: add support for the Cortex-A5 PMU This patch adds support for the Cortex-A5 PMU to the ARMv7 perf-event backend. Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-06-03 16:40:15 +00:00
{
return NULL;
}
ARM: perf: add support for the Cortex-A15 PMU This patch adds support for the Cortex-A15 PMU to the ARMv7 perf-event backend. Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-01-19 14:24:38 +00:00
ARM: perf: de-const struct arm_pmu This patch removes const qualifiers from instances of struct arm_pmu, and functions initialising them, in preparation for generalising arm_pmu usage to system (AKA uncore) PMUs. This will allow for dynamically modifiable structures (locks, struct pmu) to be added as members of struct arm_pmu. Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-04-15 10:14:38 +00:00
static struct arm_pmu *__init armv7_a15_pmu_init(void)
ARM: perf: add support for the Cortex-A15 PMU This patch adds support for the Cortex-A15 PMU to the ARMv7 perf-event backend. Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-01-19 14:24:38 +00:00
{
return NULL;
}
ARM: perf: separate PMU backends into multiple files The ARM perf_event.c file contains all PMU backends and, as new PMUs are introduced, will continue to grow. This patch follows the example of x86 and splits the PMU implementations into separate files which are then #included back into the main file. Compile-time guards are added to each PMU file to avoid compiling in code that is not relevant for the version of the architecture which we are targetting. Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2010-11-13 19:04:32 +00:00
#endif /* CONFIG_CPU_V7 */
Reference in New Issue Copy Permalink