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timerfd: Use ktime_mono_to_real() 

We have a few other use cases of ktime_get_monotonic_offset() which
can be optimized with ktime_mono_to_real(). The timerfd code uses the
offset only for comparison, so we can use ktime_mono_to_real(0) for
this as well.

Funny enough text size shrinks with that on ARM and x8664 !?

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: John Stultz <john.stultz@linaro.org>
This commit is contained in:
Thomas Gleixner 2014-07-16 21:04:23 +00:00 committed by John Stultz
parent 9a6b51976e
commit 53cc7bad37
1 changed files with 3 additions and 3 deletions
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6
fs/timerfd.c
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@ -93,7 +93,7 @@ static enum alarmtimer_restart timerfd_alarmproc(struct alarm *alarm,
*/
void timerfd_clock_was_set(void)
{
ktime_t moffs = ktime_get_monotonic_offset();
ktime_t moffs = ktime_mono_to_real((ktime_t){ .tv64 = 0 });
struct timerfd_ctx *ctx;
unsigned long flags;
@ -126,7 +126,7 @@ static bool timerfd_canceled(struct timerfd_ctx *ctx)
{
if (!ctx->might_cancel || ctx->moffs.tv64 != KTIME_MAX)
return false;
ctx->moffs = ktime_get_monotonic_offset();
ctx->moffs = ktime_mono_to_real((ktime_t){ .tv64 = 0 });
return true;
}
@ -405,7 +405,7 @@ SYSCALL_DEFINE2(timerfd_create, int, clockid, int, flags)
else
hrtimer_init(&ctx->t.tmr, clockid, HRTIMER_MODE_ABS);
ctx->moffs = ktime_get_monotonic_offset();
ctx->moffs = ktime_mono_to_real((ktime_t){ .tv64 = 0 });
ufd = anon_inode_getfd("[timerfd]", &timerfd_fops, ctx,
O_RDWR | (flags & TFD_SHARED_FCNTL_FLAGS));