Messages in this thread Patch in this message | | | From | Yangtao Li <> | Subject | [PATCH] clocksource/drivers/timer-sun4i: Add CLOCK_EVT_FEAT_DYNIRQ | Date | Thu, 9 Feb 2023 12:02:39 +0800 |
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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> --- drivers/clocksource/timer-sun4i.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/clocksource/timer-sun4i.c b/drivers/clocksource/timer-sun4i.c index e5a70aa1deb4..7bdcc60ad43c 100644 --- a/drivers/clocksource/timer-sun4i.c +++ b/drivers/clocksource/timer-sun4i.c @@ -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, -- 2.25.1
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