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| author | Ingo Molnar <mingo@elte.hu> | 2009-04-07 13:34:26 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-04-07 13:34:42 +0200 |
| commit | 2e8844e13ab73f1107aea4317a53ff5879f2e1d7 (patch) | |
| tree | 36165371cf6fd26d674610f1c6bb5fac50e6e13f /arch/arm/kernel/time.c | |
| parent | c78a3956b982418186e40978a51636a2b43221bc (diff) | |
| parent | d508afb437daee7cf07da085b635c44a4ebf9b38 (diff) | |
| download | linux-2e8844e13ab73f1107aea4317a53ff5879f2e1d7.tar.gz linux-2e8844e13ab73f1107aea4317a53ff5879f2e1d7.tar.bz2 linux-2e8844e13ab73f1107aea4317a53ff5879f2e1d7.zip | |
Merge branch 'linus' into tracing/hw-branch-tracing
Merge reason: update to latest tracing and ptrace APIs
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/arm/kernel/time.c')
| -rw-r--r-- | arch/arm/kernel/time.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c index c68b44aa88d2..4cdc4a0bd02d 100644 --- a/arch/arm/kernel/time.c +++ b/arch/arm/kernel/time.c @@ -33,6 +33,7 @@ #include <asm/leds.h> #include <asm/thread_info.h> +#include <asm/stacktrace.h> #include <asm/mach/time.h> /* @@ -55,14 +56,22 @@ EXPORT_SYMBOL(rtc_lock); #ifdef CONFIG_SMP unsigned long profile_pc(struct pt_regs *regs) { - unsigned long fp, pc = instruction_pointer(regs); + struct stackframe frame; - if (in_lock_functions(pc)) { - fp = regs->ARM_fp; - pc = ((unsigned long *)fp)[-1]; - } + if (!in_lock_functions(regs->ARM_pc)) + return regs->ARM_pc; + + frame.fp = regs->ARM_fp; + frame.sp = regs->ARM_sp; + frame.lr = regs->ARM_lr; + frame.pc = regs->ARM_pc; + do { + int ret = unwind_frame(&frame); + if (ret < 0) + return 0; + } while (in_lock_functions(frame.pc)); - return pc; + return frame.pc; } EXPORT_SYMBOL(profile_pc); #endif |