d18019a53a
The user stack dump feature was recently added for powerpc. But there
was no test case available to test it.
This test works same as on other architectures by preparing a stack
frame on the perf test thread and comparing each frame by unwinding it.
$ ./perf test 50
50: Test dwarf unwind : Ok
User stack dump for powerpc: https://lkml.org/lkml/2016/4/28/482
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Anju T Sudhakar <anju@linux.vnet.ibm.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Matt Fleming <matt.fleming@intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/1474267100-31079-1-git-send-email-ravi.bangoria@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
72 lines
2.0 KiB
C
72 lines
2.0 KiB
C
#ifndef ARCH_PERF_REGS_H
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#define ARCH_PERF_REGS_H
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#include <stdlib.h>
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#include <linux/types.h>
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#include <asm/perf_regs.h>
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void perf_regs_load(u64 *regs);
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#define PERF_REGS_MASK ((1ULL << PERF_REG_POWERPC_MAX) - 1)
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#define PERF_REGS_MAX PERF_REG_POWERPC_MAX
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#ifdef __powerpc64__
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#define PERF_SAMPLE_REGS_ABI PERF_SAMPLE_REGS_ABI_64
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#else
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#define PERF_SAMPLE_REGS_ABI PERF_SAMPLE_REGS_ABI_32
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#endif
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#define PERF_REG_IP PERF_REG_POWERPC_NIP
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#define PERF_REG_SP PERF_REG_POWERPC_R1
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static const char *reg_names[] = {
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[PERF_REG_POWERPC_R0] = "r0",
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[PERF_REG_POWERPC_R1] = "r1",
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[PERF_REG_POWERPC_R2] = "r2",
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[PERF_REG_POWERPC_R3] = "r3",
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[PERF_REG_POWERPC_R4] = "r4",
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[PERF_REG_POWERPC_R5] = "r5",
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[PERF_REG_POWERPC_R6] = "r6",
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[PERF_REG_POWERPC_R7] = "r7",
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[PERF_REG_POWERPC_R8] = "r8",
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[PERF_REG_POWERPC_R9] = "r9",
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[PERF_REG_POWERPC_R10] = "r10",
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[PERF_REG_POWERPC_R11] = "r11",
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[PERF_REG_POWERPC_R12] = "r12",
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[PERF_REG_POWERPC_R13] = "r13",
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[PERF_REG_POWERPC_R14] = "r14",
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[PERF_REG_POWERPC_R15] = "r15",
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[PERF_REG_POWERPC_R16] = "r16",
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[PERF_REG_POWERPC_R17] = "r17",
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[PERF_REG_POWERPC_R18] = "r18",
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[PERF_REG_POWERPC_R19] = "r19",
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[PERF_REG_POWERPC_R20] = "r20",
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[PERF_REG_POWERPC_R21] = "r21",
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[PERF_REG_POWERPC_R22] = "r22",
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[PERF_REG_POWERPC_R23] = "r23",
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[PERF_REG_POWERPC_R24] = "r24",
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[PERF_REG_POWERPC_R25] = "r25",
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[PERF_REG_POWERPC_R26] = "r26",
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[PERF_REG_POWERPC_R27] = "r27",
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[PERF_REG_POWERPC_R28] = "r28",
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[PERF_REG_POWERPC_R29] = "r29",
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[PERF_REG_POWERPC_R30] = "r30",
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[PERF_REG_POWERPC_R31] = "r31",
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[PERF_REG_POWERPC_NIP] = "nip",
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[PERF_REG_POWERPC_MSR] = "msr",
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[PERF_REG_POWERPC_ORIG_R3] = "orig_r3",
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[PERF_REG_POWERPC_CTR] = "ctr",
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[PERF_REG_POWERPC_LINK] = "link",
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[PERF_REG_POWERPC_XER] = "xer",
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[PERF_REG_POWERPC_CCR] = "ccr",
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[PERF_REG_POWERPC_SOFTE] = "softe",
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[PERF_REG_POWERPC_TRAP] = "trap",
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[PERF_REG_POWERPC_DAR] = "dar",
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[PERF_REG_POWERPC_DSISR] = "dsisr"
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};
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static inline const char *perf_reg_name(int id)
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{
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return reg_names[id];
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}
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#endif /* ARCH_PERF_REGS_H */
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