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| author | Torben Hohn <torbenh@gmx.de> | 2011-01-27 16:00:12 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2011-02-09 16:17:24 +0100 |
| commit | 22b7fcdae562b6792b3f5517e89fd7e0337180ae (patch) | |
| tree | 0fc27558c04d63b4d7bea7e34e0f0b2535993d10 /arch/mn10300 | |
| parent | 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 (diff) | |
| download | linux-22b7fcdae562b6792b3f5517e89fd7e0337180ae.tar.gz linux-22b7fcdae562b6792b3f5517e89fd7e0337180ae.tar.bz2 linux-22b7fcdae562b6792b3f5517e89fd7e0337180ae.zip | |
mn10300: Switch do_timer() to xtimer_update()
Only one CPU gets the timer interrupt so mn10300_last_tsc does not
need to be protected by xtime lock. Remove xtime lovking and use
xtime_update() which does the locking itself.
Signed-off-by: Torben Hohn <torbenh@gmx.de>
Cc: David Howells <dhowells@redhat.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
LKML-Reference: <20110127150011.23248.62040.stgit@localhost>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/mn10300')
| -rw-r--r-- | arch/mn10300/kernel/time.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/arch/mn10300/kernel/time.c b/arch/mn10300/kernel/time.c index 75da468090b9..5b955000626d 100644 --- a/arch/mn10300/kernel/time.c +++ b/arch/mn10300/kernel/time.c @@ -104,8 +104,6 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id) unsigned tsc, elapse; irqreturn_t ret; - write_seqlock(&xtime_lock); - while (tsc = get_cycles(), elapse = tsc - mn10300_last_tsc, /* time elapsed since last * tick */ @@ -114,11 +112,9 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id) mn10300_last_tsc += MN10300_TSC_PER_HZ; /* advance the kernel's time tracking system */ - do_timer(1); + xtime_update(1); } - write_sequnlock(&xtime_lock); - ret = local_timer_interrupt(); #ifdef CONFIG_SMP send_IPI_allbutself(LOCAL_TIMER_IPI); |