[tip: timers/core] posix-timers: Clarify posix_timer_rearm() comment

tip-bot2 for Thomas Gleixner
2023-06-05T15:09:13Z

The following commit has been merged into the timers/core branch of tip:

Commit-ID: 93a62291070d2836b7cbaf20febadae6ae33934a
Gitweb: https://git.kernel.org/tip/93a62291070d2836b7cbaf20febadae6ae33934a
Author: Thomas Gleixner <tglx@linutronix.de>
AuthorDate: Tue, 25 Apr 2023 20:49:22 +02:00
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitterDate: Mon, 05 Jun 2023 17:03:38 +02:00

posix-timers: Clarify posix_timer_rearm() comment

Yet another incomprehensible piece of art.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Link: https://lore.kernel.org/r/20230425183313.724863461@linutronix.de

---
kernel/time/posix-timers.c | 12 +++---------
1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index fb92036..f1a7c62 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -275,15 +275,9 @@ static void common_hrtimer_rearm(struct k_itimer *timr)
}

/*
- * This function is exported for use by the signal deliver code. It is
- * called just prior to the info block being released and passes that
- * block to us. It's function is to update the overrun entry AND to
- * restart the timer. It should only be called if the timer is to be
- * restarted (i.e. we have flagged this in the sys_private entry of the
- * info block).
- *
- * To protect against the timer going away while the interrupt is queued,
- * we require that the it_requeue_pending flag be set.
+ * This function is called from the signal delivery code if
+ * info->si_sys_private is not zero, which indicates that the timer has to
+ * be rearmed. Restart the timer and update info::si_overrun.
*/
void posixtimer_rearm(struct kernel_siginfo *info)
{