| Date | Mon, 13 Jan 2020 19:09:30 -0000 | From | "tip-bot2 for Andrei Vagin" <> | Subject | [tip: timers/core] alarmtimer: Provide get_timespec() callback |
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The following commit has been merged into the timers/core branch of tip:
Commit-ID: c8ff8b6c6f12d13dcdf2c948b197eb3d362600e0 Gitweb: https://git.kernel.org/tip/c8ff8b6c6f12d13dcdf2c948b197eb3d362600e0 Author: Andrei Vagin <avagin@gmail.com> AuthorDate: Tue, 12 Nov 2019 01:26:57 Committer: Thomas Gleixner <tglx@linutronix.de> CommitterDate: Mon, 13 Jan 2020 08:10:49 +01:00
alarmtimer: Provide get_timespec() callback
The upcoming support for time namespaces requires to have access to:
- The time in a task's time namespace for sys_clock_gettime() - The time in the root name space for common_timer_get()
Wire up alarm bases with get_timespec().
Suggested-by: Thomas Gleixner <tglx@linutronix.de> Co-developed-by: Dmitry Safonov <dima@arista.com> Signed-off-by: Andrei Vagin <avagin@gmail.com> Signed-off-by: Dmitry Safonov <dima@arista.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20191112012724.250792-9-dima@arista.com
--- kernel/time/alarmtimer.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c index 22b6f9b..357be1f 100644 --- a/kernel/time/alarmtimer.c +++ b/kernel/time/alarmtimer.c @@ -37,12 +37,14 @@ * @lock: Lock for syncrhonized access to the base * @timerqueue: Timerqueue head managing the list of events * @get_ktime: Function to read the time correlating to the base + * @get_timespec: Function to read the namespace time correlating to the base * @base_clockid: clockid for the base */ static struct alarm_base { spinlock_t lock; struct timerqueue_head timerqueue; ktime_t (*get_ktime)(void); + void (*get_timespec)(struct timespec64 *tp); clockid_t base_clockid; } alarm_bases[ALARM_NUMTYPE]; @@ -670,7 +672,8 @@ static int alarm_clock_get_timespec(clockid_t which_clock, struct timespec64 *tp if (!alarmtimer_get_rtcdev()) return -EINVAL; - *tp = ktime_to_timespec64(base->get_ktime()); + base->get_timespec(tp); + return 0; } @@ -883,8 +886,10 @@ static int __init alarmtimer_init(void) /* Initialize alarm bases */ alarm_bases[ALARM_REALTIME].base_clockid = CLOCK_REALTIME; alarm_bases[ALARM_REALTIME].get_ktime = &ktime_get_real; + alarm_bases[ALARM_REALTIME].get_timespec = ktime_get_real_ts64, alarm_bases[ALARM_BOOTTIME].base_clockid = CLOCK_BOOTTIME; alarm_bases[ALARM_BOOTTIME].get_ktime = &ktime_get_boottime; + alarm_bases[ALARM_BOOTTIME].get_timespec = ktime_get_boottime_ts64; for (i = 0; i < ALARM_NUMTYPE; i++) { timerqueue_init_head(&alarm_bases[i].timerqueue); spin_lock_init(&alarm_bases[i].lock);
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