Commit 5ccb51b0 authored by Yangtao Li's avatar Yangtao Li Committed by Daniel Lezcano
Browse files

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: default avatarYangtao Li <frank.li@vivo.com>
Link: https://lore.kernel.org/r/20230209040239.24710-1-frank.li@vivo.com


Signed-off-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
parent cf16f631

drivers/clocksource/timer-sun4i.c

+2 −1
Original line number Diff line number Diff line
@@ -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,