clocksource: pass clocksource to read() callback

Pass clocksource pointer to the read() callback for clocksources.  This
allows us to share the callback between multiple instances.

[hugh@veritas.com: fix powerpc build of clocksource pass clocksource mods]
[akpm@linux-foundation.org: cleanup]
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: John Stultz <johnstul@us.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 5 insertions, 5 deletions

diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
index c46c931a7fe7..ecfd7b5187e0 100644
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -181,12 +181,12 @@ static void clocksource_watchdog(unsigned long data)
 
         resumed = test_and_clear_bit(0, &watchdog_resumed);
 
-        wdnow = watchdog->read();
+        wdnow = watchdog->read(watchdog);
         wd_nsec = cyc2ns(watchdog, (wdnow - watchdog_last) & watchdog->mask);
         watchdog_last = wdnow;
 
         list_for_each_entry_safe(cs, tmp, &watchdog_list, wd_list) {
-                csnow = cs->read();
+                csnow = cs->read(cs);
 
                 if (unlikely(resumed)) {
                         cs->wd_last = csnow;
@@ -247,7 +247,7 @@ static void clocksource_check_watchdog(struct clocksource *cs)
 
                 list_add(&cs->wd_list, &watchdog_list);
                 if (!started && watchdog) {
-                        watchdog_last = watchdog->read();
+                        watchdog_last = watchdog->read(watchdog);
                         watchdog_timer.expires = jiffies + WATCHDOG_INTERVAL;
                         add_timer_on(&watchdog_timer,
                                      cpumask_first(cpu_online_mask));
@@ -268,7 +268,7 @@ static void clocksource_check_watchdog(struct clocksource *cs)
                                 cse->flags &= ~CLOCK_SOURCE_WATCHDOG;
                         /* Start if list is not empty */
                         if (!list_empty(&watchdog_list)) {
-                                watchdog_last = watchdog->read();
+                                watchdog_last = watchdog->read(watchdog);
                                 watchdog_timer.expires =
                                         jiffies + WATCHDOG_INTERVAL;
                                 add_timer_on(&watchdog_timer,
diff --git a/kernel/time/jiffies.c b/kernel/time/jiffies.c
index 06f197560f3b..c3f6c30816e3 100644
--- a/kernel/time/jiffies.c
+++ b/kernel/time/jiffies.c
@@ -50,7 +50,7 @@
  */
 #define JIFFIES_SHIFT   8
 
-static cycle_t jiffies_read(void)
+static cycle_t jiffies_read(struct clocksource *cs)
 {
         return (cycle_t) jiffies;
 }