linux/trace_clock.c at 4ea1636b04dbd66536fa387bae2eea463efc705b - linux - ClassFun

korg/linux

mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-12-27 13:05:03 +08:00

Andy Lutomirski 4ea1636b04 x86/asm/tsc: Rename native_read_tsc() to rdtsc()

Now that there is no paravirt TSC, the "native" is
inappropriate. The function does RDTSC, so give it the obvious
name: rdtsc().

Suggested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Huang Rui <ray.huang@amd.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Len Brown <lenb@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: kvm ML <kvm@vger.kernel.org>
Link: http://lkml.kernel.org/r/fd43e16281991f096c1e4d21574d9e1402c62d39.1434501121.git.luto@kernel.org
[ Ported it to v4.2-rc1. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2015-07-06 15:23:28 +02:00

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 /*
  * X86 trace clocks
  */
 #include <asm/trace_clock.h>
 #include <asm/barrier.h>
 #include <asm/msr.h>
 /*
  * trace_clock_x86_tsc(): A clock that is just the cycle counter.
  *
  * Unlike the other clocks, this is not in nanoseconds.
  */
 u64 notrace trace_clock_x86_tsc(void)
 {
 	u64 ret;
 	rdtsc_barrier();
 	ret = rdtsc();
 	return ret;
 }