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Commit e2c50119 authored by Mark Rutland's avatar Mark Rutland
Browse files

arm: Use generic timer broadcast receiver 



Currently, the ARM backend must maintain a redundant list of timers for
the purpose of centralising timer broadcast functionality. This prevents
sharing timer drivers across architectures.

This patch moves the pain of dealing with timer broadcasts to the core
clockevents tick broadcast code, which already maintains its own list
of timers.

Signed-off-by: default avatarMark Rutland <mark.rutland@arm.com>
Reviewed-by: default avatarSantosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: default avatarSantosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: default avatarStephen Boyd <sboyd@codeaurora.org>
parent 12ad1000

arch/arm/kernel/smp.c

+3 −7
Original line number Diff line number Diff line
@@ -475,12 +475,6 @@ u64 smp_irq_stat_cpu(unsigned int cpu) 
 */

static DEFINE_PER_CPU(struct clock_event_device, percpu_clockevent);



static void ipi_timer(void)

{

	struct clock_event_device *evt = &__get_cpu_var(percpu_clockevent);

	evt->event_handler(evt);

}



#ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST

static void smp_timer_broadcast(const struct cpumask *mask)

{
@@ -596,11 +590,13 @@ void handle_IPI(int ipinr, struct pt_regs *regs) 
	case IPI_WAKEUP:

		break;



#ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST

	case IPI_TIMER:

		irq_enter();

		ipi_timer();

		tick_receive_broadcast();

		irq_exit();

		break;

#endif



	case IPI_RESCHEDULE:

		scheduler_ipi();