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Commit 5f293474 authored by Andy Lutomirski's avatar Andy Lutomirski Committed by John Stultz
Browse files

x86-64: Inline vdso clock_gettime helpers 



This is about a 3% speedup on Sandy Bridge.

Signed-off-by: default avatarAndy Lutomirski <luto@amacapital.net>
Signed-off-by: default avatarJohn Stultz <john.stultz@linaro.org>
parent 91ec87d5

arch/x86/vdso/vclock_gettime.c

+5 −4
Original line number Diff line number Diff line
@@ -94,7 +94,8 @@ notrace static inline long vgetns(void) 
	return (v * gtod->clock.mult) >> gtod->clock.shift;

}



notrace static noinline int do_realtime(struct timespec *ts)

/* Code size doesn't matter (vdso is 4k anyway) and this is faster. */

notrace static int __always_inline do_realtime(struct timespec *ts)

{

	unsigned long seq, ns;

	int mode;
@@ -111,7 +112,7 @@ notrace static noinline int do_realtime(struct timespec *ts) 
	return mode;

}



notrace static noinline int do_monotonic(struct timespec *ts)

notrace static int do_monotonic(struct timespec *ts)

{

	unsigned long seq, ns;

	int mode;
@@ -128,7 +129,7 @@ notrace static noinline int do_monotonic(struct timespec *ts) 
	return mode;

}



notrace static noinline int do_realtime_coarse(struct timespec *ts)

notrace static int do_realtime_coarse(struct timespec *ts)

{

	unsigned long seq;

	do {
@@ -139,7 +140,7 @@ notrace static noinline int do_realtime_coarse(struct timespec *ts) 
	return 0;

}



notrace static noinline int do_monotonic_coarse(struct timespec *ts)

notrace static int do_monotonic_coarse(struct timespec *ts)

{

	unsigned long seq;

	do {