sparc: Switch do_timer() to xtime_update()

xtime_update() takes the xtime_lock itself.

pcic_clear_clock_irq() and clear_clock_irq do not need
to be protected by xtime_lock.

Signed-off-by: Torben Hohn <torbenh@gmx.de>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: johnstul@us.ibm.com
Cc: hch@infradead.org
Cc: yong.zhang0@gmail.com
LKML-Reference: <20110127150022.23248.80369.stgit@localhost>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/arch/sparc/kernel/pcic.c b/arch/sparc/kernel/pcic.c
index aeaa09a3c655606fa01bdb90be3491983b6ecf98..2cdc131b50acd04040762e9c814a1035d95087f1 100644 (file)
--- 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 9c743b1886fff4314caf7487065aa8852f8db1e7..4211bfc9bcadc0249d1ba2f83a0e2837bd1ac243 100644 (file)
--- 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()));