[patch 12/26] posix-timers: Add timer_rearm() callback

Thomas Gleixner
2017-05-30T21:45:02Z

[-- Attachment #1: posix-timers--Add-timer_rearm---callback.patch --]
[-- Type: text/plain, Size: 2218 bytes --]

Add a timer_rearm() callback which is used to make the rescheduling of
posix interval timers independent of the underlying clock implementation.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
include/linux/posix-timers.h | 36 ++++++++++++++++++++----------------
1 file changed, 20 insertions(+), 16 deletions(-)

--- a/include/linux/posix-timers.h
+++ b/include/linux/posix-timers.h
@@ -101,23 +101,27 @@ struct k_itimer {
} it;
};

-struct k_clock {
- int (*clock_getres) (const clockid_t which_clock, struct timespec64 *tp);
- int (*clock_set) (const clockid_t which_clock,
- const struct timespec64 *tp);
- int (*clock_get) (const clockid_t which_clock, struct timespec64 *tp);
- int (*clock_adj) (const clockid_t which_clock, struct timex *tx);
- int (*timer_create) (struct k_itimer *timer);
- int (*nsleep) (const clockid_t which_clock, int flags,
- struct timespec64 *, struct timespec __user *);
- long (*nsleep_restart) (struct restart_block *restart_block);
- int (*timer_set) (struct k_itimer *timr, int flags,
- struct itimerspec64 *new_setting,
- struct itimerspec64 *old_setting);
- int (*timer_del) (struct k_itimer *timr);
#define TIMER_RETRY 1
- void (*timer_get) (struct k_itimer *timr,
- struct itimerspec64 *cur_setting);
+
+struct k_clock {
+ int (*clock_getres)(const clockid_t which_clock,
+ struct timespec64 *tp);
+ int (*clock_set)(const clockid_t which_clock,
+ const struct timespec64 *tp);
+ int (*clock_get)(const clockid_t which_clock,
+ struct timespec64 *tp);
+ int (*clock_adj)(const clockid_t which_clock, struct timex *tx);
+ int (*timer_create)(struct k_itimer *timer);
+ int (*nsleep)(const clockid_t which_clock, int flags,
+ struct timespec64 *, struct timespec __user *);
+ long (*nsleep_restart)(struct restart_block *restart_block);
+ int (*timer_set)(struct k_itimer *timr, int flags,
+ struct itimerspec64 *new_setting,
+ struct itimerspec64 *old_setting);
+ int (*timer_del)(struct k_itimer *timr);
+ void (*timer_get)(struct k_itimer *timr,
+ struct itimerspec64 *cur_setting);
+ void (*timer_rearm)(struct k_itimer *timr);
};

void run_posix_cpu_timers(struct task_struct *task);