Messages in this thread Patch in this message | | | Subject | [PATCH v2 18/20] sparc: switch do_timer() to xtime_update() | From | Torben Hohn <> | Date | Thu, 27 Jan 2011 16:00:22 +0100 |
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xtime_update() takes the xtime_lock itself.
pcic_clear_clock_irq() and clear_clock_irq do not need to be protected by a lock. it might make sense to move them after xtime_update() though.
Signed-off-by: Torben Hohn <torbenh@gmx.de> Acked-by: David S. Miller <davem@davemloft.net> --- arch/sparc/kernel/pcic.c | 4 +--- arch/sparc/kernel/time_32.c | 9 ++------- 2 files changed, 3 insertions(+), 10 deletions(-)
diff --git a/arch/sparc/kernel/pcic.c b/arch/sparc/kernel/pcic.c index aeaa09a..2cdc131 100644 --- a/arch/sparc/kernel/pcic.c +++ b/arch/sparc/kernel/pcic.c @@ -700,10 +700,8 @@ static void pcic_clear_clock_irq(void) static irqreturn_t pcic_timer_handler (int irq, void *h) { - write_seqlock(&xtime_lock); /* Dummy, to show that we remember */ pcic_clear_clock_irq(); - do_timer(1); - write_sequnlock(&xtime_lock); + xtime_update(1); #ifndef CONFIG_SMP update_process_times(user_mode(get_irq_regs())); #endif diff --git a/arch/sparc/kernel/time_32.c b/arch/sparc/kernel/time_32.c index 9c743b1..4211bfc 100644 --- a/arch/sparc/kernel/time_32.c +++ b/arch/sparc/kernel/time_32.c @@ -85,7 +85,7 @@ int update_persistent_clock(struct timespec now) /* * 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 */ #define TICK_SIZE (tick_nsec / 1000) @@ -96,14 +96,9 @@ static irqreturn_t timer_interrupt(int dummy, void *dev_id) profile_tick(CPU_PROFILING); #endif - /* Protect counter clear so that do_gettimeoffset works */ - write_seqlock(&xtime_lock); - clear_clock_irq(); - do_timer(1); - - write_sequnlock(&xtime_lock); + xtime_update(1); #ifndef CONFIG_SMP update_process_times(user_mode(get_irq_regs()));
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