Retrigger_next_event() must be called with interrupts disabled.

All internal (to hrtimer.c) uses of retrigger_next_event() are correct.
But the version exported to other files, hres_timers_resume(), does not
do the IRQ blocking, nor does the (single) external caller of it.

Rather than require that users of hres_timers_resume() do the IRQ blocking,
this patch makes the blocking part of the hres_timers_resume() functionality.

(Also remove the meaningless WARN_ON_ONCE() call in hres_timers_resume)

Signed-off-by: Joe Korty ([EMAIL PROTECTED])

Index: 2.6.23-rc3/kernel/hrtimer.c
===================================================================
--- 2.6.23-rc3.orig/kernel/hrtimer.c    2007-08-13 18:30:09.000000000 -0400
+++ 2.6.23-rc3/kernel/hrtimer.c 2007-08-13 18:38:48.000000000 -0400
@@ -463,10 +463,11 @@
  */
 void hres_timers_resume(void)
 {
-       WARN_ON_ONCE(num_online_cpus() > 1);
+       unsigned long flags;
 
-       /* Retrigger the CPU local events: */
+       local_irq_save(flags);
        retrigger_next_event(NULL);
+       local_irq_restore(flags);
 }
 
 /*

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Reply via email to