The following commit has been merged into the timers/core branch of tip: Commit-ID: 7da8b3a44bb426a43670b3a97ed61085018a9d43 Gitweb: https://git.kernel.org/tip/7da8b3a44bb426a43670b3a97ed61085018a9d43 Author: Andrei Vagin <avagin@xxxxxxxxx> AuthorDate: Tue, 12 Nov 2019 01:27:03 Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx> CommitterDate: Tue, 14 Jan 2020 12:20:54 +01:00 posix-timers: Make timer_settime() time namespace aware Wire timer_settime() syscall into time namespace virtualization. sys_timer_settime() calls the ktime->timer_set() callback. Right now, common_timer_set() is the only implementation for the callback. The user-supplied expiry value is converted from timespec64 to ktime and then timens_ktime_to_host() can be used to convert namespace's time to the host time. Inside a time namespace kernel's time differs by a fixed offset from a user-supplied time, but only absolute values (TIMER_ABSTIME) must be converted. Co-developed-by: Dmitry Safonov <dima@xxxxxxxxxx> Signed-off-by: Andrei Vagin <avagin@xxxxxxxxxx> Signed-off-by: Dmitry Safonov <dima@xxxxxxxxxx> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20191112012724.250792-15-dima@xxxxxxxxxx --- kernel/time/posix-timers.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c index d26b915..473082b 100644 --- a/kernel/time/posix-timers.c +++ b/kernel/time/posix-timers.c @@ -885,6 +885,8 @@ int common_timer_set(struct k_itimer *timr, int flags, timr->it_interval = timespec64_to_ktime(new_setting->it_interval); expires = timespec64_to_ktime(new_setting->it_value); + if (flags & TIMER_ABSTIME) + expires = timens_ktime_to_host(timr->it_clock, expires); sigev_none = timr->it_sigev_notify == SIGEV_NONE; kc->timer_arm(timr, expires, flags & TIMER_ABSTIME, sigev_none);
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