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authorTorben Hohn <torbenh@gmx.de>2011-01-27 15:59:15 +0100
committerThomas Gleixner <tglx@linutronix.de>2011-01-31 14:55:43 +0100
commit1340f3e0b29b745a33f431455c3a37f48197bc81 (patch)
treeb796639443802af39b9ea7c4bfcdbab1fa9c85d9 /arch/alpha
parentf0af911a9dec9de702645182c8d269449e24d24b (diff)
downloadop-kernel-dev-1340f3e0b29b745a33f431455c3a37f48197bc81.zip
op-kernel-dev-1340f3e0b29b745a33f431455c3a37f48197bc81.tar.gz
alpha: Change do_timer() to xtime_update()
xtime_update() takes the xtime_lock itself. timer_interrupt() is only called on the boot cpu. See do_entInt(). So "state" in timer_interrupt does not require protection by xtime_lock. Signed-off-by: Torben Hohn <torbenh@gmx.de> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: johnstul@us.ibm.com Cc: hch@infradead.org Cc: yong.zhang0@gmail.com LKML-Reference: <20110127145915.23248.20919.stgit@localhost> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/alpha')
-rw-r--r--arch/alpha/kernel/time.c8
1 files changed, 2 insertions, 6 deletions
diff --git a/arch/alpha/kernel/time.c b/arch/alpha/kernel/time.c
index c1f3e7c..a58e84f 100644
--- a/arch/alpha/kernel/time.c
+++ b/arch/alpha/kernel/time.c
@@ -159,7 +159,7 @@ void read_persistent_clock(struct timespec *ts)
/*
* timer_interrupt() needs to keep up the real-time clock,
- * as well as call the "do_timer()" routine every clocktick
+ * as well as call the "xtime_update()" routine every clocktick
*/
irqreturn_t timer_interrupt(int irq, void *dev)
{
@@ -172,8 +172,6 @@ irqreturn_t timer_interrupt(int irq, void *dev)
profile_tick(CPU_PROFILING);
#endif
- write_seqlock(&xtime_lock);
-
/*
* Calculate how many ticks have passed since the last update,
* including any previous partial leftover. Save any resulting
@@ -187,9 +185,7 @@ irqreturn_t timer_interrupt(int irq, void *dev)
nticks = delta >> FIX_SHIFT;
if (nticks)
- do_timer(nticks);
-
- write_sequnlock(&xtime_lock);
+ xtime_update(nticks);
if (test_irq_work_pending()) {
clear_irq_work_pending();
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