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posix-timers: Add timer_rearm() callback 

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>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: John Stultz <john.stultz@linaro.org>
Link: http://lkml.kernel.org/r/20170530211656.732632167@linutronix.de
This commit is contained in:
Thomas Gleixner 2017-05-30 23:15:45 +02:00
parent d97bb75ddd
commit 3080294589
1 changed files with 18 additions and 15 deletions
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33
kernel/time/posix-timers.h
View File

@ -1,21 +1,24 @@
#define TIMER_RETRY 1 #define TIMER_RETRY 1
struct k_clock { struct k_clock {
int (*clock_getres) (const clockid_t which_clock, struct timespec64 *tp); int (*clock_getres)(const clockid_t which_clock,
int (*clock_set) (const clockid_t which_clock, struct timespec64 *tp);
const struct timespec64 *tp); int (*clock_set)(const clockid_t which_clock,
int (*clock_get) (const clockid_t which_clock, struct timespec64 *tp); const struct timespec64 *tp);
int (*clock_adj) (const clockid_t which_clock, struct timex *tx); int (*clock_get)(const clockid_t which_clock,
int (*timer_create) (struct k_itimer *timer); struct timespec64 *tp);
int (*nsleep) (const clockid_t which_clock, int flags, int (*clock_adj)(const clockid_t which_clock, struct timex *tx);
struct timespec64 *, struct timespec __user *); int (*timer_create)(struct k_itimer *timer);
long (*nsleep_restart) (struct restart_block *restart_block); int (*nsleep)(const clockid_t which_clock, int flags,
int (*timer_set) (struct k_itimer *timr, int flags, struct timespec64 *, struct timespec __user *);
struct itimerspec64 *new_setting, long (*nsleep_restart)(struct restart_block *restart_block);
struct itimerspec64 *old_setting); int (*timer_set)(struct k_itimer *timr, int flags,
int (*timer_del) (struct k_itimer *timr); struct itimerspec64 *new_setting,
void (*timer_get) (struct k_itimer *timr, struct itimerspec64 *old_setting);
struct itimerspec64 *cur_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);
}; };
extern const struct k_clock clock_posix_cpu; extern const struct k_clock clock_posix_cpu;