From: Lucas Stach Date: Sun, 25 Oct 2015 15:40:30 +0000 (+0100) Subject: clocksource/drivers/tegra: Allow timer irq affinity change X-Git-Tag: v5.15~14465^2~68 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=a3a8908fb02bfa2514750734bfd3afc6c1daeb89;p=mirror_ubuntu-kernels.git clocksource/drivers/tegra: Allow timer irq affinity change Allow the timer core to change the smp affinity of the broadcast timer irq by setting CLOCK_EVT_FEAT_DYNIRQ flag. This reduces interrupt pressure and wakeups on CPU0 as well as vastly reducing the number of timer broadcast IPIs. Signed-off-by: Lucas Stach Signed-off-by: Daniel Lezcano --- diff --git a/drivers/clocksource/tegra20_timer.c b/drivers/clocksource/tegra20_timer.c index 6ebda1177e79..38333aba3055 100644 --- a/drivers/clocksource/tegra20_timer.c +++ b/drivers/clocksource/tegra20_timer.c @@ -96,7 +96,8 @@ static struct clock_event_device tegra_clockevent = { .name = "timer0", .rating = 300, .features = CLOCK_EVT_FEAT_ONESHOT | - CLOCK_EVT_FEAT_PERIODIC, + CLOCK_EVT_FEAT_PERIODIC | + CLOCK_EVT_FEAT_DYNIRQ, .set_next_event = tegra_timer_set_next_event, .set_state_shutdown = tegra_timer_shutdown, .set_state_periodic = tegra_timer_set_periodic,