From: Hosung Kim <hosung0.kim@xxxxxxxxxxx> The MCT local timers can be used as a per-cpu event timer. To prevent the timer interrupts from migrating to other CPUs, set the flag IRQF_PERCPU. Signed-off-by: Hosung Kim <hosung0.kim@xxxxxxxxxxx> [Original commit from https://android.googlesource.com/kernel/gs/+/03267fad19f093bac979ca78309483e9eb3a8d16] Signed-off-by: Will McVicker <willmcvicker@xxxxxxxxxx> --- drivers/clocksource/exynos_mct.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/clocksource/exynos_mct.c b/drivers/clocksource/exynos_mct.c index 05c50f2f7a7e..21ded37137d7 100644 --- a/drivers/clocksource/exynos_mct.c +++ b/drivers/clocksource/exynos_mct.c @@ -590,7 +590,8 @@ static int __init exynos4_timer_interrupts(struct device_node *np, irq_set_status_flags(mct_irq, IRQ_NOAUTOEN); if (request_irq(mct_irq, exynos4_mct_tick_isr, - IRQF_TIMER | IRQF_NOBALANCING, + IRQF_TIMER | IRQF_NOBALANCING | + IRQF_PERCPU, pcpu_mevt->name, pcpu_mevt)) { pr_err("exynos-mct: cannot register IRQ (cpu%d)\n", cpu); -- 2.49.0.472.ge94155a9ec-goog
