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linux/arch/arm/kernel
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Kevin Hilman b008848020 ARM: 7688/1: add support for context tracking subsystem 
commit 91d1aa43 (context_tracking: New context tracking susbsystem)
generalized parts of the RCU userspace extended quiescent state into
the context tracking subsystem.  Context tracking is then used
to implement adaptive tickless (a.k.a extended nohz)

To support the new context tracking subsystem on ARM, the user/kernel
boundary transtions need to be instrumented.

For exceptions and IRQs in usermode, the existing usr_entry macro is
used to instrument the user->kernel transition.  For the return to
usermode path, the ret_to_user* path is instrumented.  Using the
usr_entry macro, this covers interrupts in userspace, data abort and
prefetch abort exceptions in userspace as well as undefined exceptions
in userspace (which is where FP emulation and VFP are handled.)

For syscalls, the slow return path is covered by instrumenting the
ret_to_user path.  In addition, the syscall entry point is
instrumented which covers the user->kernel transition for both fast
and slow syscalls, and an additional instrumentation point is added
for the fast syscall return path (ret_fast_syscall).

Cc: Mats Liljegren <mats.liljegren@enea.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-04-03 17:00:01 +01:00
..
.gitignore
arch_timer.c ARM: arch_timer: include linux/errno.h 2013-02-15 19:32:03 +01:00
armksyms.c Merge branches 'audit', 'delay', 'fixes', 'misc' and 'sta2x11' into for-linus 2012-07-27 23:06:32 +01:00
arthur.c
asm-offsets.c ARM: 7659/1: mm: make mm->context.id an atomic64_t variable 2013-03-03 22:54:14 +00:00
atags_compat.c ARM: 7505/1: split out ATAGS parsing 2012-09-03 22:55:56 +01:00
atags_parse.c ARM: 7505/1: split out ATAGS parsing 2012-09-03 22:55:56 +01:00
atags_proc.c ARM: 7505/1: split out ATAGS parsing 2012-09-03 22:55:56 +01:00
atags.h ARM: 7506/1: allow for ATAGS to be configured out when DT support is selected 2012-09-03 22:56:15 +01:00
bios32.c ARM: 7683/1: pci: add a align_resource hook 2013-04-03 16:56:11 +01:00
calls.S ARM: 7665/1: Wire up kcmp syscall 2013-03-03 22:54:18 +00:00
cpuidle.c cpuidle: Add common time keeping and irq enabling 2012-03-21 01:59:40 -04:00
crash_dump.c crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn 2011-03-23 19:47:19 -07:00
debug.S ARM: compile fix for DEBUG_LL=y && MMU=n 2013-01-16 14:30:06 -08:00
devtree.c ARM: 7585/1: kernel: fix nr_cpu_ids check in DT logical map init 2012-11-23 13:01:31 +00:00
dma-isa.c
dma.c locking, ARM: Annotate low level hw locks as raw 2011-09-13 11:12:14 +02:00
early_printk.c
elf.c Disintegrate asm/system.h for ARM 2012-03-28 18:30:01 +01:00
entry-armv.S ARM: 7688/1: add support for context tracking subsystem 2013-04-03 17:00:01 +01:00
entry-common.S ARM: 7688/1: add support for context tracking subsystem 2013-04-03 17:00:01 +01:00
entry-header.S ARM: 7688/1: add support for context tracking subsystem 2013-04-03 17:00:01 +01:00
etm.c ARM: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
fiq.c ARM: fiq: change FIQ_START to a variable 2012-07-01 21:59:19 +08:00
fiqasm.S ARM: 6938/1: fiq: Refactor {get,set}_fiq_regs() for Thumb-2 2011-05-26 10:31:06 +01:00
ftrace.c ARM: 7468/1: ftrace: Trace function entry before updating index 2012-07-31 10:30:42 +01:00
head-common.S arm/dt: Make __vet_atags also accept a dtb image 2011-05-11 15:12:32 +02:00
head-nommu.S ARM: 7591/1: nommu: Enable the strict alignment (CR_A) bit only if ARCH < v6 2012-12-07 11:48:57 +00:00
head.S ARM: 7657/1: head: fix swapper and idmap population with LPAE and big-endian 2013-03-03 22:54:13 +00:00
hw_breakpoint.c ARM: 7662/1: hw_breakpoint: reset debug logic on secondary CPUs in s2ram resume 2013-03-03 22:54:16 +00:00
hyp-stub.S ARM: virt: simplify __hyp_stub_install epilog 2013-01-10 21:08:55 +00:00
insn.c ARM: fix missing bug.h include in arch/arm/kernel/insn.c 2012-03-30 11:51:46 +01:00
insn.h ARM: 7334/1: add jump label support 2012-03-24 09:38:56 +00:00
io.c arm: convert core files from module.h to export.h 2011-10-31 19:30:49 -04:00
irq.c arm: add set_handle_irq() to register the parent IRQ controller handler function 2013-01-10 11:44:38 -06:00
isa.c
iwmmxt.S ARM: pxa: fix logic error in PJ4 iWMMXt handling 2011-08-11 10:10:26 +08:00
jump_label.c ARM: 7334/1: add jump label support 2012-03-24 09:38:56 +00:00
kgdb.c
kprobes-arm.c ARM: 7181/1: Restrict kprobes probing SWP instructions to ARMv5 and below 2011-11-30 23:54:54 +00:00
kprobes-common.c Disintegrate asm/system.h for ARM 2012-03-28 18:30:01 +01:00
kprobes-test-arm.c ARM: kprobes: make more tests conditional 2012-10-09 17:07:43 +02:00
kprobes-test-thumb.c ARM: 7174/1: Fix build error in kprobes test code on Thumb2 kernels 2011-11-26 21:58:53 +00:00
kprobes-test.c treewide: fix printk typo in multiple drivers 2012-11-19 11:08:17 +01:00
kprobes-test.h ARM: 7174/1: Fix build error in kprobes test code on Thumb2 kernels 2011-11-26 21:58:53 +00:00
kprobes-thumb.c ARM: 7423/1: kprobes: run t32_simulate_ldr_literal() without insn slot 2012-06-14 15:11:44 +01:00
kprobes.c hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
kprobes.h ARM: kprobes: Add exports for test code 2011-09-20 18:17:43 +00:00
machine_kexec.c ARM: 7555/1: kexec: fix segment memory addresses check 2012-10-18 11:05:19 +01:00
Makefile ARM: psci: add support for PSCI invocations from the kernel 2013-01-10 21:10:20 +00:00
module.c ARM: 7059/1: LPAE: Use PMD_(SHIFT|SIZE|MASK) instead of PGDIR_* 2011-08-23 15:30:33 +01:00
opcodes.c ARM: 7206/1: Add generic ARM instruction set condition code checks. 2011-12-13 08:52:02 +00:00
patch.c ARM: 7332/1: extract out code patch function from kprobes 2012-03-24 09:38:55 +00:00
patch.h ARM: 7332/1: extract out code patch function from kprobes 2012-03-24 09:38:55 +00:00
perf_event_cpu.c ARM: perf: handle armpmu_register failing 2013-01-18 13:46:09 +00:00
perf_event_v6.c ARM: perf: don't pretend to support counting of L1I writes 2013-01-16 12:01:59 +00:00
perf_event_v7.c ARM: 7663/1: perf: fix ARMv7 EVTYPE_MASK to include NSH bit 2013-03-03 22:54:17 +00:00
perf_event_xscale.c ARM: perf: don't pretend to support counting of L1I writes 2013-01-16 12:01:59 +00:00
perf_event.c ARM: 7667/1: perf: Fix section mismatch on armpmu_init() 2013-03-06 23:45:43 +00:00
pj4-cp0.c arm: remove several unnecessary module.h include instances 2011-10-31 19:30:48 -04:00
process.c ARM idle: delete pm_idle 2013-02-17 23:37:04 -05:00
psci.c ARM: psci: add support for PSCI invocations from the kernel 2013-01-10 21:10:20 +00:00
ptrace.c ARM: 7595/1: syscall: rework ordering in syscall_trace_exit 2012-12-11 00:18:26 +00:00
relocate_kernel.S ARM: 7065/1: kexec: ensure new kernel is entered in ARM state 2011-08-28 10:39:41 +01:00
return_address.c ARM: 7676/1: fix a wrong value returned from CALLER_ADDRn 2013-03-19 11:43:46 +00:00
sched_clock.c ARM: 7643/1: sched: correct update_sched_clock() 2013-02-11 17:33:08 +00:00
setup.c ARM: 7602/1: Pass real "__machine_arch_type" variable to setup_machine_tags() procedure 2012-12-16 10:04:24 +00:00
signal.c arm: switch to struct ksignal * passing 2013-02-14 09:21:16 -05:00
signal.h ARM: 7471/1: Revert "7442/1: Revert "remove unused restart trampoline"" 2012-07-28 11:11:51 +01:00
sleep.S Disintegrate asm/system.h for ARM 2012-03-28 18:30:01 +01:00
smp_scu.c ARM: scu: mask cluster id from cpu_logical_map 2013-01-31 13:54:16 -06:00
smp_tlb.c ARM: 7660/1: tlb: add branch predictor maintenance operations 2013-03-03 22:54:15 +00:00
smp_twd.c ARM: 7655/1: smp_twd: make twd_local_timer_of_register() no-op for nosmp 2013-03-03 22:54:12 +00:00
smp.c ARM: 7661/1: mm: perform explicit branch predictor maintenance when required 2013-03-03 22:54:16 +00:00
stacktrace.c arm: convert core files from module.h to export.h 2011-10-31 19:30:49 -04:00
suspend.c ARM: 7661/1: mm: perform explicit branch predictor maintenance when required 2013-03-03 22:54:16 +00:00
swp_emulate.c ARM: missing ->mmap_sem around find_vma() in swp_emulate.c 2012-12-20 10:40:24 +00:00
sys_arm.c arm: switch to generic fork/vfork/clone 2012-11-28 22:13:54 -05:00
sys_oabi-compat.c userns: Convert stat to return values mapped from kuids and kgids 2012-05-15 14:08:35 -07:00
tcm.c Disintegrate asm/system.h for ARM 2012-03-28 18:30:01 +01:00
tcm.h
thumbee.c ARM: 7385/1: ThumbEE: Use cpuid macros to read ID_PFR0 for ThumbEE 2012-04-25 19:49:26 +01:00
time.c ARM: delete struct sys_timer 2012-12-24 09:36:38 -07:00
topology.c ARM: kernel: update topology to use new MPIDR macros 2012-11-19 15:44:33 +00:00
traps.c taint: add explicit flag to show whether lock dep is still OK. 2013-01-21 17:17:57 +10:30
unwind.c ARM: unwinder: fix bisection to find origin in .idx section 2011-12-15 14:02:19 -08:00
vmlinux.lds.S ARM: Section based HYP idmap 2013-01-23 13:29:09 -05:00
xscale-cp0.c arm: remove several unnecessary module.h include instances 2011-10-31 19:30:48 -04:00