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| author | Ingo Molnar | 2010-06-09 18:55:20 +0200 |
|---|---|---|
| committer | Ingo Molnar | 2010-06-09 18:55:57 +0200 |
| commit | c726b61c6a5acc54c55ed7a0e7638cc4c5a100a8 (patch) | |
| tree | 3f44aa013d31d34951e9610e79ff14c1148ad6ac /arch/powerpc/kernel | |
| parent | perf: Fix build breakage for architecutes without atomic64_t (diff) | |
| parent | x86: Unify save_stack_address() and save_stack_address_nosched() (diff) | |
| download | kernel-qcow2-linux-c726b61c6a5acc54c55ed7a0e7638cc4c5a100a8.tar.gz kernel-qcow2-linux-c726b61c6a5acc54c55ed7a0e7638cc4c5a100a8.tar.xz kernel-qcow2-linux-c726b61c6a5acc54c55ed7a0e7638cc4c5a100a8.zip | |
Merge branch 'perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into perf/core
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/misc.S | 26 |
1 files changed, 0 insertions, 26 deletions
diff --git a/arch/powerpc/kernel/misc.S b/arch/powerpc/kernel/misc.S index 22e507c8a556..2d29752cbe16 100644 --- a/arch/powerpc/kernel/misc.S +++ b/arch/powerpc/kernel/misc.S @@ -127,29 +127,3 @@ _GLOBAL(__setup_cpu_power7) _GLOBAL(__restore_cpu_power7) /* place holder */ blr - -/* - * Get a minimal set of registers for our caller's nth caller. - * r3 = regs pointer, r5 = n. - * - * We only get R1 (stack pointer), NIP (next instruction pointer) - * and LR (link register). These are all we can get in the - * general case without doing complicated stack unwinding, but - * fortunately they are enough to do a stack backtrace, which - * is all we need them for. - */ -_GLOBAL(perf_arch_fetch_caller_regs) - mr r6,r1 - cmpwi r5,0 - mflr r4 - ble 2f - mtctr r5 -1: PPC_LL r6,0(r6) - bdnz 1b - PPC_LL r4,PPC_LR_STKOFF(r6) -2: PPC_LL r7,0(r6) - PPC_LL r7,PPC_LR_STKOFF(r7) - PPC_STL r6,GPR1-STACK_FRAME_OVERHEAD(r3) - PPC_STL r4,_NIP-STACK_FRAME_OVERHEAD(r3) - PPC_STL r7,_LINK-STACK_FRAME_OVERHEAD(r3) - blr |