posix-timers: Remove useless res field from k_clock

The res member of kclock is only used by mmtimer.c, but even there it
contains redundant information. Remove the field and fixup mmtimer.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: John Stultz <johnstul@us.ibm.com>
Tested-by: Richard Cochran <richard.cochran@omicron.at>
LKML-Reference: <20110201134418.808714587@linutronix.de>

diff --git a/drivers/char/mmtimer.c b/drivers/char/mmtimer.c
index 141ffae..ff41eb3 100644 (file)
--- a/drivers/char/mmtimer.c
+++ b/drivers/char/mmtimer.c
@@ -768,12 +768,11 @@ static int sgi_timer_set(struct k_itimer *timr, int flags,
 static int sgi_clock_getres(const clockid_t which_clock, struct timespec *tp)
 {
        tp->tv_sec = 0;
-       tp->tv_nsec = sgi_clock.res;
+       tp->tv_nsec = sgi_clock_period;
        return 0;
 }
 
 static struct k_clock sgi_clock = {
-       .res = 0,
        .clock_set      = sgi_clock_set,
        .clock_get      = sgi_clock_get,
        .clock_getres   = sgi_clock_getres,
@@ -840,7 +839,7 @@ static int __init mmtimer_init(void)
                        (unsigned long) node);
        }
 
-       sgi_clock_period = sgi_clock.res = NSEC_PER_SEC / sn_rtc_cycles_per_second;
+       sgi_clock_period = NSEC_PER_SEC / sn_rtc_cycles_per_second;
        register_posix_clock(CLOCK_SGI_CYCLE, &sgi_clock);
 
        printk(KERN_INFO "%s: v%s, %ld MHz\n", MMTIMER_DESC, MMTIMER_VERSION,

diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h
index 4aaf0c5..ef574d1 100644 (file)
--- a/include/linux/posix-timers.h
+++ b/include/linux/posix-timers.h
@@ -67,7 +67,6 @@ struct k_itimer {
 };
 
 struct k_clock {
-       int res;                /* in nanoseconds */
        int (*clock_getres) (const clockid_t which_clock, struct timespec *tp);
        int (*clock_set) (const clockid_t which_clock,
                          const struct timespec *tp);

diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c
index 748497f..f9142a9 100644 (file)
--- a/kernel/posix-timers.c
+++ b/kernel/posix-timers.c
@@ -204,8 +204,6 @@ static inline int invalid_clockid(const clockid_t which_clock)
                return 1;
        if (posix_clocks[which_clock].clock_getres != NULL)
                return 0;
-       if (posix_clocks[which_clock].res != 0)
-               return 0;
        return 1;
 }