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Commit 53cc7bad authored by Thomas Gleixner's avatar Thomas Gleixner Committed by John Stultz
Browse files

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: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarJohn Stultz <john.stultz@linaro.org>
parent 9a6b5197

fs/timerfd.c

+3 −3
Original line number Diff line number Diff line
@@ -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));