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From: "tip-bot2 for Yangtao Li" <tip-bot2@linutronix.de>
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To: linux-tip-commits@vger.kernel.org
Subject: [tip: timers/core] clocksource/drivers/timer-sun4i: Add
CLOCK_EVT_FEAT_DYNIRQ
Cc: Yangtao Li <frank.li@vivo.com>,
Daniel Lezcano <daniel.lezcano@linaro.org>, x86@kernel.org,
linux-kernel@vger.kernel.org
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[tip:,timers/core] clocksource/drivers/timer-sun4i: Add CLOCK_EVT_FEAT_DYNIRQ
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Commit Message
tip-bot2 for Thomas Gleixner
Feb. 13, 2023, 6:26 p.m. UTC
The following commit has been merged into the timers/core branch of tip: Commit-ID: 5ccb51b06c8bfcfca99d3f68e671eead7318301d Gitweb: https://git.kernel.org/tip/5ccb51b06c8bfcfca99d3f68e671eead7318301d Author: Yangtao Li <frank.li@vivo.com> AuthorDate: Thu, 09 Feb 2023 12:02:39 +08:00 Committer: Daniel Lezcano <daniel.lezcano@linaro.org> CommitterDate: Mon, 13 Feb 2023 13:10:17 +01:00 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> --- 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 e5a70aa..7bdcc60 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,