From 5ccb51b06c8bfcfca99d3f68e671eead7318301d Mon Sep 17 00:00:00 2001
From: Yangtao Li <frank.li@vivo.com>
Date: Thu, 9 Feb 2023 12:02:39 +0800
Subject: [PATCH] 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 e5a70aa1deb46..7bdcc60ad43cb 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,