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| author | Andrei Vagin <avagin@gmail.com> | 2019-11-12 04:27:03 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-01-14 14:20:54 +0300 |
| commit | 7da8b3a44bb426a43670b3a97ed61085018a9d43 (patch) | |
| tree | 370fcb94c7b19d6f3ee69312d87aac5e5bb7aeb0 /kernel/time/posix-timers.c | |
| parent | 6cd889d43c40b13f81a44c41896781ce70244769 (diff) | |
| download | linux-7da8b3a44bb426a43670b3a97ed61085018a9d43.tar.xz | |
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@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/20191112012724.250792-15-dima@arista.com
Diffstat (limited to 'kernel/time/posix-timers.c')
| -rw-r--r-- | kernel/time/posix-timers.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c index d26b915b227a..473082b0b57f 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); |