Commit bdc8b891 authored Sep 19, 2010 by Michael Cree Committed by Matt Turner Sep 18, 2010

alpha: Shift perf event pending work earlier in timer interrupt



Pending work from the performance event subsystem is executed in
the timer interrupt.  This patch shifts the call to
perf_event_do_pending() before the call to update_process_times()
as the latter may call back into the perf event subsystem and it
is prudent to have the pending work executed first.

Signed-off-by: Michael Cree <mcree@orcon.net.nz>
Signed-off-by: Matt Turner <mattst88@gmail.com>

parent 531f0474

arch/alpha/kernel/time.c

+5 −5

Original line number	Diff line number	Diff line
		@@ -191,16 +191,16 @@ irqreturn_t timer_interrupt(int irq, void *dev)

		write_sequnlock(&xtime_lock);

		#ifndef CONFIG_SMP
		while (nticks--)
		update_process_times(user_mode(get_irq_regs()));
		#endif

		if (test_perf_event_pending()) {
		clear_perf_event_pending();
		perf_event_do_pending();
		}

		#ifndef CONFIG_SMP
		while (nticks--)
		update_process_times(user_mode(get_irq_regs()));
		#endif

		return IRQ_HANDLED;
		}