diff options
| author | Lucas Stach <dev@lynxeye.de> | 2015-10-25 18:40:30 +0300 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2015-12-15 11:41:06 +0300 |
| commit | a3a8908fb02bfa2514750734bfd3afc6c1daeb89 (patch) | |
| tree | 94b5e6b4f2256ddd37543331c9705150bcd9cc7b /drivers/clocksource | |
| parent | 11faa20eb43997baae0c72916d8a959efcb6f8c4 (diff) | |
| download | linux-a3a8908fb02bfa2514750734bfd3afc6c1daeb89.tar.xz | |
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 <dev@lynxeye.de>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Diffstat (limited to 'drivers/clocksource')
| -rw-r--r-- | drivers/clocksource/tegra20_timer.c | 3 |
1 files changed, 2 insertions, 1 deletions
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, |