[patch 14/20] posix-timers: Document nanosleep() details

Thomas Gleixner
2023-04-25T18:50:08Z

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

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
kernel/time/posix-timers.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)

--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -1376,7 +1376,7 @@ SYSCALL_DEFINE2(clock_getres_time32, clo
#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)
@@ -1388,8 +1388,13 @@ static int common_nsleep(const clockid_t
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);