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clocksource/drivers/timer-sun4i: Add CLOCK_EVT_FEAT_DYNIRQ 

Add CLOCK_EVT_FEAT_DYNIRQ to allow the IRQ could be runtime set affinity
to the cores that needs wake up, otherwise saying core0 has to send
IPI to wakeup core1. With CLOCK_EVT_FEAT_DYNIRQ set, when broadcast
timer could wake up the cores, IPI is not needed.

After enabling this feature, especially the scene where cpuidle is
enabled can benefit.

Signed-off-by: Yangtao Li <frank.li@vivo.com>
Link: https://lore.kernel.org/r/20230209040239.24710-1-frank.li@vivo.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This commit is contained in:
Yangtao Li 2023-02-09 12:02:39 +08:00 committed by Daniel Lezcano
parent cf16f631b0
commit 5ccb51b06c
1 changed files with 2 additions and 1 deletions
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3
drivers/clocksource/timer-sun4i.c
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@ -144,7 +144,8 @@ static struct timer_of to = {
.clkevt = {
.name = "sun4i_tick",
.rating = 350,
.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT |
CLOCK_EVT_FEAT_DYNIRQ,
.set_state_shutdown = sun4i_clkevt_shutdown,
.set_state_periodic = sun4i_clkevt_set_periodic,
.set_state_oneshot = sun4i_clkevt_set_oneshot,