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authorTorben Hohn <torbenh@gmx.de>2011-01-27 15:59:46 +0100
committerThomas Gleixner <tglx@linutronix.de>2011-01-31 14:55:45 +0100
commit57464bd87f708e75b47312766e3fc8dc3aaf66ad (patch)
tree05047f5add674428289a12d7a912a3bf129c9e67 /arch/frv
parent36cb07bb8118cb14211ef25c58026f005877c47d (diff)
downloadlwn-57464bd87f708e75b47312766e3fc8dc3aaf66ad.tar.gz
lwn-57464bd87f708e75b47312766e3fc8dc3aaf66ad.zip
frv: Switch do_timer() to xtime_update()
__set_LEDS() does not need to be protected by xtime_lock. its used unprotected in other places. [ tglx: Removed stale comment ] Signed-off-by: Torben Hohn <torbenh@gmx.de> Cc: hch@infradead.org Cc: Peter Zijlstra <peterz@infradead.org> Cc: johnstul@us.ibm.com Cc: David Howells <dhowells@redhat.com> Cc: yong.zhang0@gmail.com LKML-Reference: <20110127145946.23248.57952.stgit@localhost> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/frv')
-rw-r--r--arch/frv/kernel/time.c14
1 files changed, 2 insertions, 12 deletions
diff --git a/arch/frv/kernel/time.c b/arch/frv/kernel/time.c
index 0ddbbae83cb2..b457de496b70 100644
--- a/arch/frv/kernel/time.c
+++ b/arch/frv/kernel/time.c
@@ -50,21 +50,13 @@ static struct irqaction timer_irq = {
/*
* 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
*/
static irqreturn_t timer_interrupt(int irq, void *dummy)
{
profile_tick(CPU_PROFILING);
- /*
- * Here we are in the timer irq handler. We just have irqs locally
- * disabled but we don't know if the timer_bh is running on the other
- * CPU. We need to avoid to SMP race with it. NOTE: we don't need
- * the irq version of write_lock because as just said we have irq
- * locally disabled. -arca
- */
- write_seqlock(&xtime_lock);
- do_timer(1);
+ xtime_update(1);
#ifdef CONFIG_HEARTBEAT
static unsigned short n;
@@ -72,8 +64,6 @@ static irqreturn_t timer_interrupt(int irq, void *dummy)
__set_LEDS(n);
#endif /* CONFIG_HEARTBEAT */
- write_sequnlock(&xtime_lock);
-
update_process_times(user_mode(get_irq_regs()));
return IRQ_HANDLED;