Commit 0b9b9a3b authored Nov 12, 2019 by Andrei Vagin Committed by Thomas Gleixner Jan 14, 2020

alarmtimer: Make nanosleep() time namespace aware



clock_nanosleep() accepts absolute values of expiration time when the
TIMER_ABSTIME flag is set. This absolute value is inside the task's
time namespace and has to be converted to the host's time.

Co-developed-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrei Vagin <avagin@openvz.org>
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20191112012724.250792-16-dima@arista.com

parent 7da8b3a4

kernel/time/alarmtimer.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -839,6 +839,8 @@ static int alarm_timer_nsleep(const clockid_t which_clock, int flags,
		ktime_t now = alarm_bases[type].get_ktime();

		exp = ktime_add_safe(now, exp);
		} else {
		exp = timens_ktime_to_host(which_clock, exp);
		}

		ret = alarmtimer_do_nsleep(&alarm, exp, type);

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