The second parameter struct k_clock *new_clock of function posix_timers_register_clock is only dereferenced and copied into another structure. Therefore it can be made const. Update the function prototype accordingly. Update the structures passed to posix_timers_register_clock, as this is their only use.
Signed-off-by: Bhumika Goyal <[email protected]> --- include/linux/posix-timers.h | 3 ++- kernel/time/posix-timers.c | 16 ++++++++-------- 2 files changed, 10 insertions(+), 9 deletions(-) diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h index 62d44c1..bf57135 100644 --- a/include/linux/posix-timers.h +++ b/include/linux/posix-timers.h @@ -118,7 +118,8 @@ struct k_clock { extern struct k_clock clock_posix_cpu; extern struct k_clock clock_posix_dynamic; -void posix_timers_register_clock(const clockid_t clock_id, struct k_clock *new_clock); +void posix_timers_register_clock(const clockid_t clock_id, + const struct k_clock *new_clock); /* function to call to trigger timer event */ int posix_timer_event(struct k_itimer *timr, int si_private); diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c index 1e6623d..d92eadf 100644 --- a/kernel/time/posix-timers.c +++ b/kernel/time/posix-timers.c @@ -284,7 +284,7 @@ static int posix_get_hrtimer_res(clockid_t which_clock, struct timespec *tp) */ static __init int init_posix_timers(void) { - struct k_clock clock_realtime = { + const struct k_clock clock_realtime = { .clock_getres = posix_get_hrtimer_res, .clock_get = posix_clock_realtime_get, .clock_set = posix_clock_realtime_set, @@ -296,7 +296,7 @@ static __init int init_posix_timers(void) .timer_get = common_timer_get, .timer_del = common_timer_del, }; - struct k_clock clock_monotonic = { + const struct k_clock clock_monotonic = { .clock_getres = posix_get_hrtimer_res, .clock_get = posix_ktime_get_ts, .nsleep = common_nsleep, @@ -306,19 +306,19 @@ static __init int init_posix_timers(void) .timer_get = common_timer_get, .timer_del = common_timer_del, }; - struct k_clock clock_monotonic_raw = { + const struct k_clock clock_monotonic_raw = { .clock_getres = posix_get_hrtimer_res, .clock_get = posix_get_monotonic_raw, }; - struct k_clock clock_realtime_coarse = { + const struct k_clock clock_realtime_coarse = { .clock_getres = posix_get_coarse_res, .clock_get = posix_get_realtime_coarse, }; - struct k_clock clock_monotonic_coarse = { + const struct k_clock clock_monotonic_coarse = { .clock_getres = posix_get_coarse_res, .clock_get = posix_get_monotonic_coarse, }; - struct k_clock clock_tai = { + const struct k_clock clock_tai = { .clock_getres = posix_get_hrtimer_res, .clock_get = posix_get_tai, .nsleep = common_nsleep, @@ -328,7 +328,7 @@ static __init int init_posix_timers(void) .timer_get = common_timer_get, .timer_del = common_timer_del, }; - struct k_clock clock_boottime = { + const struct k_clock clock_boottime = { .clock_getres = posix_get_hrtimer_res, .clock_get = posix_get_boottime, .nsleep = common_nsleep, @@ -521,7 +521,7 @@ static struct pid *good_sigevent(sigevent_t * event) } void posix_timers_register_clock(const clockid_t clock_id, - struct k_clock *new_clock) + const struct k_clock *new_clock) { if ((unsigned) clock_id >= MAX_CLOCKS) { printk(KERN_WARNING "POSIX clock register failed for clock_id %d\n", -- 1.9.1
