diff mbox series

[3/3] clocksource/drivers/timer-clint: Add set_state_oneshot_stopped

Message ID 20240327153502.2133-4-jszhang@kernel.org (mailing list archive)
State Superseded
Headers show
Series clocksouce/timer-clint|riscv: some improvements | expand

Checks

Context Check Description
conchuod/vmtest-for-next-PR success PR summary
conchuod/patch-3-test-1 success .github/scripts/patches/tests/build_rv32_defconfig.sh
conchuod/patch-3-test-2 success .github/scripts/patches/tests/build_rv64_clang_allmodconfig.sh
conchuod/patch-3-test-3 success .github/scripts/patches/tests/build_rv64_gcc_allmodconfig.sh
conchuod/patch-3-test-4 success .github/scripts/patches/tests/build_rv64_nommu_k210_defconfig.sh
conchuod/patch-3-test-5 success .github/scripts/patches/tests/build_rv64_nommu_virt_defconfig.sh
conchuod/patch-3-test-6 success .github/scripts/patches/tests/checkpatch.sh
conchuod/patch-3-test-7 success .github/scripts/patches/tests/dtb_warn_rv64.sh
conchuod/patch-3-test-8 success .github/scripts/patches/tests/header_inline.sh
conchuod/patch-3-test-9 success .github/scripts/patches/tests/kdoc.sh
conchuod/patch-3-test-10 success .github/scripts/patches/tests/module_param.sh
conchuod/patch-3-test-11 success .github/scripts/patches/tests/verify_fixes.sh
conchuod/patch-3-test-12 success .github/scripts/patches/tests/verify_signedoff.sh

Commit Message

Jisheng Zhang March 27, 2024, 3:35 p.m. UTC
To avoid spurious timer interrupts when KTIME_MAX is used, we need to
configure set_state_oneshot_stopped(). Although implementing this is
optional, it still affects things like power management for the extra
timer interrupt.

Check commit 8fff52fd5093 ("clockevents: Introduce
CLOCK_EVT_STATE_ONESHOT_STOPPED state") for more information.

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
---
 drivers/clocksource/timer-clint.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/drivers/clocksource/timer-clint.c b/drivers/clocksource/timer-clint.c
index 56cf6c672e6d..f5c04520d6b1 100644
--- a/drivers/clocksource/timer-clint.c
+++ b/drivers/clocksource/timer-clint.c
@@ -134,6 +134,7 @@  static DEFINE_PER_CPU(struct clock_event_device, clint_clock_event) = {
 	.rating				= 100,
 	.set_next_event			= clint_clock_next_event,
 	.set_state_shutdown		= clint_clock_shutdown,
+	.set_state_oneshot_stopped	= clint_clock_shutdown,
 };
 
 static int clint_timer_starting_cpu(unsigned int cpu)