linux-kernel - [tip: timers/core] clocksource/drivers/exynos_mct: Mark MCT device as CLOCK_EVT_FEAT

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Message-ID: <162999511928.25758.13349701269137366922.tip-bot2@tip-bot2>
Date:   Thu, 26 Aug 2021 16:25:19 -0000
From:   "tip-bot2 for Will Deacon" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Will Deacon <will@...nel.org>,
        Chanwoo Choi <cw00.choi@...sung.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: timers/core] clocksource/drivers/exynos_mct: Mark MCT device as
 CLOCK_EVT_FEAT_PERCPU

The following commit has been merged into the timers/core branch of tip:

Commit-ID:     88183788eacb782eb6e1295f1934fb9531b503d6
Gitweb:        https://git.kernel.org/tip/88183788eacb782eb6e1295f1934fb9531b503d6
Author:        Will Deacon <will@...nel.org>
AuthorDate:    Tue, 08 Jun 2021 16:43:41 +01:00
Committer:     Daniel Lezcano <daniel.lezcano@...aro.org>
CommitterDate: Fri, 13 Aug 2021 09:24:22 +02:00

clocksource/drivers/exynos_mct: Mark MCT device as CLOCK_EVT_FEAT_PERCPU

The "mct_tick" is a per-cpu clockevents device. Set the
CLOCK_EVT_FEAT_PERCPU feature to prevent e.g. mct_tick0 being unsafely
designated as the global broadcast timer and instead treat the device as
a per-cpu wakeup timer.

Cc: Daniel Lezcano <daniel.lezcano@...aro.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
Signed-off-by: Will Deacon <will@...nel.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
Reviewed-by: Chanwoo Choi <cw00.choi@...sung.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
Link: https://lore.kernel.org/r/20210608154341.10794-3-will@kernel.org
---
 drivers/clocksource/exynos_mct.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/clocksource/exynos_mct.c b/drivers/clocksource/exynos_mct.c
index 804d3e0..5e3e96d 100644
--- a/drivers/clocksource/exynos_mct.c
+++ b/drivers/clocksource/exynos_mct.c
@@ -465,7 +465,8 @@ static int exynos4_mct_starting_cpu(unsigned int cpu)
 	evt->set_state_oneshot = set_state_shutdown;
 	evt->set_state_oneshot_stopped = set_state_shutdown;
 	evt->tick_resume = set_state_shutdown;
-	evt->features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT;
+	evt->features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT |
+			CLOCK_EVT_FEAT_PERCPU;
 	evt->rating = MCT_CLKEVENTS_RATING,
 
 	exynos4_mct_write(TICK_BASE_CNT, mevt->base + MCT_L_TCNTB_OFFSET);