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

diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c
index 8523df7..62b06cf 100644 (file)
--- a/kernel/time/alarmtimer.c
+++ b/kernel/time/alarmtimer.c
@@ -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,

diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index 44d4f9c..68d4690 100644 (file)
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -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,