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authorAndy Lutomirski <luto@mit.edu>2012-03-22 21:15:52 -0700
committerJohn Stultz <john.stultz@linaro.org>2012-03-23 16:49:35 -0700
commit5f293474c4c6c4dc2baaf2dfd486748b5986de76 (patch)
tree1ced9f5c401aa7d808954a21e527a0f0e54ea9b8 /arch/x86/vdso
parent91ec87d57fc38c529034e853687dfb7756de5406 (diff)
downloadlinux-5f293474c4c6c4dc2baaf2dfd486748b5986de76.tar.bz2
x86-64: Inline vdso clock_gettime helpers
This is about a 3% speedup on Sandy Bridge. Signed-off-by: Andy Lutomirski <luto@amacapital.net> Signed-off-by: John Stultz <john.stultz@linaro.org>
Diffstat (limited to 'arch/x86/vdso')
-rw-r--r--arch/x86/vdso/vclock_gettime.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/x86/vdso/vclock_gettime.c b/arch/x86/vdso/vclock_gettime.c
index 6eea70b8f384..885eff49d6ab 100644
--- a/arch/x86/vdso/vclock_gettime.c
+++ b/arch/x86/vdso/vclock_gettime.c
@@ -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 {