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posix-timers: Document nanosleep() details

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The descriptions for common_nsleep() is wrong and common_nsleep_timens()
lacks any form of comment.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Link: https://lore.kernel.org/r/20230425183313.567072835@linutronix.de
This commit is contained in:
Thomas Gleixner 2023-04-25 20:49:17 +02:00
parent 3561fcb402
commit 640fe745d7
1 changed files with 7 additions and 2 deletions
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9
kernel/time/posix-timers.c
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@ -1370,7 +1370,7 @@ SYSCALL_DEFINE2(clock_getres_time32, clockid_t, which_clock,
#endif
/*
* nanosleep for monotonic and realtime clocks
* sys_clock_nanosleep() for CLOCK_REALTIME and CLOCK_TAI
*/
static int common_nsleep(const clockid_t which_clock, int flags,
const struct timespec64 *rqtp)
@ -1382,8 +1382,13 @@ static int common_nsleep(const clockid_t which_clock, int flags,
which_clock);
}
/*
* sys_clock_nanosleep() for CLOCK_MONOTONIC and CLOCK_BOOTTIME
*
* Absolute nanosleeps for these clocks are time-namespace adjusted.
*/
static int common_nsleep_timens(const clockid_t which_clock, int flags,
const struct timespec64 *rqtp)
const struct timespec64 *rqtp)
{
ktime_t texp = timespec64_to_ktime(*rqtp);