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| author | Thomas Gleixner <tglx@linutronix.de> | 2009-08-21 13:24:08 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2009-08-31 09:35:46 +0200 |
| commit | ef4512882dbe9978e7a18ccbcb4cb45705ce5560 (patch) | |
| tree | 7a9f85a9a9ddb4be1a0073730bf04ca25bc1eb4f /arch/x86/kernel/time_64.c | |
| parent | x86: Move calibrate_cpu to tsc.c (diff) | |
| download | linux-ef4512882dbe9978e7a18ccbcb4cb45705ce5560.tar.xz linux-ef4512882dbe9978e7a18ccbcb4cb45705ce5560.zip | |
x86: time_32/64.c unify profile_pc
The code is identical except for the formatting and a useless
#ifdef. Make it the same.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/time_64.c')
| -rw-r--r-- | arch/x86/kernel/time_64.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/x86/kernel/time_64.c b/arch/x86/kernel/time_64.c index e59a40ebff14..fda0c34da757 100644 --- a/arch/x86/kernel/time_64.c +++ b/arch/x86/kernel/time_64.c @@ -34,14 +34,16 @@ unsigned long profile_pc(struct pt_regs *regs) { unsigned long pc = instruction_pointer(regs); - /* Assume the lock function has either no stack frame or a copy - of flags from PUSHF - Eflags always has bits 22 and up cleared unlike kernel addresses. */ if (!user_mode_vm(regs) && in_lock_functions(pc)) { #ifdef CONFIG_FRAME_POINTER return *(unsigned long *)(regs->bp + sizeof(long)); #else unsigned long *sp = (unsigned long *)regs->sp; + /* + * Return address is either directly at stack pointer + * or above a saved flags. Eflags has bits 22-31 zero, + * kernel addresses don't. + */ if (sp[0] >> 22) return sp[0]; if (sp[1] >> 22) |