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posix-clocks: Rename .clock_get_timespec() callbacks accordingly 

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()

That adds a valid reason to finally implement a separate callback which
returns the time in ktime_t format in (struct k_clock).

As a preparation ground for introducing clock_get_ktime(), the original
callback clock_get() was renamed into clock_get_timespec().
Reflect the renaming into the callback implementations.

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/20191112012724.250792-7-dima@arista.com
This commit is contained in:
Andrei Vagin 2019-11-12 01:26:55 +00:00 коммит произвёл Thomas Gleixner
Родитель 819a95fe3a
Коммит eaf80194d0
2 изменённых файлов: 11 добавлений и 11 удалений
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6
kernel/time/alarmtimer.c
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@ -657,13 +657,13 @@ static int alarm_clock_getres(const clockid_t which_clock, struct timespec64 *tp
}
/**
* alarm_clock_get - posix clock_get_timespec interface
* alarm_clock_get_timespec - posix clock_get_timespec interface
* @which_clock: clockid
* @tp: timespec to fill.
*
* Provides the underlying alarm base time.
*/
static int alarm_clock_get(clockid_t which_clock, struct timespec64 *tp)
static int alarm_clock_get_timespec(clockid_t which_clock, struct timespec64 *tp)
{
struct alarm_base *base = &alarm_bases[clock2alarm(which_clock)];
@ -837,7 +837,7 @@ static int alarm_timer_nsleep(const clockid_t which_clock, int flags,
const struct k_clock alarm_clock = {
.clock_getres = alarm_clock_getres,
.clock_get_timespec = alarm_clock_get,
.clock_get_timespec = alarm_clock_get_timespec,
.timer_create = alarm_timer_create,
.timer_set = common_timer_set,
.timer_del = common_timer_del,

16
kernel/time/posix-timers.c
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@ -165,7 +165,7 @@ static inline void unlock_timer(struct k_itimer *timr, unsigned long flags)
}
/* Get clock_realtime */
static int posix_clock_realtime_get(clockid_t which_clock, struct timespec64 *tp)
static int posix_get_realtime_timespec(clockid_t which_clock, struct timespec64 *tp)
{
ktime_get_real_ts64(tp);
return 0;
@ -187,7 +187,7 @@ static int posix_clock_realtime_adj(const clockid_t which_clock,
/*
* Get monotonic time for posix timers
*/
static int posix_ktime_get_ts(clockid_t which_clock, struct timespec64 *tp)
static int posix_get_monotonic_timespec(clockid_t which_clock, struct timespec64 *tp)
{
ktime_get_ts64(tp);
return 0;
@ -222,13 +222,13 @@ static int posix_get_coarse_res(const clockid_t which_clock, struct timespec64 *
return 0;
}
static int posix_get_boottime(const clockid_t which_clock, struct timespec64 *tp)
static int posix_get_boottime_timespec(const clockid_t which_clock, struct timespec64 *tp)
{
ktime_get_boottime_ts64(tp);
return 0;
}
static int posix_get_tai(clockid_t which_clock, struct timespec64 *tp)
static int posix_get_tai_timespec(clockid_t which_clock, struct timespec64 *tp)
{
ktime_get_clocktai_ts64(tp);
return 0;
@ -1261,7 +1261,7 @@ SYSCALL_DEFINE4(clock_nanosleep_time32, clockid_t, which_clock, int, flags,
static const struct k_clock clock_realtime = {
.clock_getres = posix_get_hrtimer_res,
.clock_get_timespec = posix_clock_realtime_get,
.clock_get_timespec = posix_get_realtime_timespec,
.clock_set = posix_clock_realtime_set,
.clock_adj = posix_clock_realtime_adj,
.nsleep = common_nsleep,
@ -1279,7 +1279,7 @@ static const struct k_clock clock_realtime = {
static const struct k_clock clock_monotonic = {
.clock_getres = posix_get_hrtimer_res,
.clock_get_timespec = posix_ktime_get_ts,
.clock_get_timespec = posix_get_monotonic_timespec,
.nsleep = common_nsleep,
.timer_create = common_timer_create,
.timer_set = common_timer_set,
@ -1310,7 +1310,7 @@ static const struct k_clock clock_monotonic_coarse = {
static const struct k_clock clock_tai = {
.clock_getres = posix_get_hrtimer_res,
.clock_get_timespec = posix_get_tai,
.clock_get_timespec = posix_get_tai_timespec,
.nsleep = common_nsleep,
.timer_create = common_timer_create,
.timer_set = common_timer_set,
@ -1326,7 +1326,7 @@ static const struct k_clock clock_tai = {
static const struct k_clock clock_boottime = {
.clock_getres = posix_get_hrtimer_res,
.clock_get_timespec = posix_get_boottime,
.clock_get_timespec = posix_get_boottime_timespec,
.nsleep = common_nsleep,
.timer_create = common_timer_create,
.timer_set = common_timer_set,