From: Will Deacon <will@kernel.org>
To: linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org,
Will Deacon <will@kernel.org>,
Marek Szyprowski <m.szyprowski@samsung.com>,
Krzysztof Kozlowski <krzk@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>,
Chanwoo Choi <cw00.choi@samsung.com>,
Thomas Gleixner <tglx@linutronix.de>,
Daniel Lezcano <daniel.lezcano@linaro.org>
Subject: [PATCH 0/2] Use Exynos-MCT timer as wakeup for Arm arch timer
Date: Tue, 8 Jun 2021 16:43:39 +0100 [thread overview]
Message-ID: <20210608154341.10794-1-will@kernel.org> (raw)
Hi all,
These two patches build on top of my other series for adding per-cpu
wakeup timers [1] which is currently queued in -tip [2].
The basic idea is to prefer the Arm architected timer, even when
CLOCK_EVT_FEAT_C3STOP is set, as long as we have another timer which can
be used for the per-cpu wakeup. These patches use Exynos-MCT as an
example, since that driver currently goes out of its way to prevent use
of the Arm architected timer due to issues with a 32-bit SoC.
Cheers,
Will
[1] https://lore.kernel.org/lkml/20210524221818.15850-1-will@kernel.org/
[2] https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/log/?h=timers/core
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Cc: Chanwoo Choi <cw00.choi@samsung.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
--->8
Will Deacon (2):
clocksource/drivers/exynos_mct: Prioritise Arm arch timer on arm64
clocksource/drivers/exynos_mct: Mark MCT device as
CLOCK_EVT_FEAT_PERCPU
drivers/clocksource/exynos_mct.c | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
--
2.32.0.rc1.229.g3e70b5a671-goog
next reply other threads:[~2021-06-08 15:43 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-08 15:43 Will Deacon [this message]
2021-06-08 15:43 ` [PATCH 1/2] clocksource/drivers/exynos_mct: Prioritise Arm arch timer on arm64 Will Deacon
2021-06-09 11:41 ` Krzysztof Kozlowski
2021-06-10 1:03 ` Chanwoo Choi
2021-06-16 15:25 ` Daniel Lezcano
2021-06-17 0:58 ` Chanwoo Choi
2021-06-17 21:47 ` Will Deacon
2021-06-21 9:25 ` Daniel Lezcano
2021-06-21 10:10 ` Will Deacon
2021-06-21 10:18 ` Daniel Lezcano
2021-06-22 2:40 ` Chanwoo Choi
2021-06-22 5:21 ` Daniel Lezcano
2021-06-22 6:42 ` Chanwoo Choi
2021-06-21 10:17 ` Marek Szyprowski
2021-06-21 10:24 ` Daniel Lezcano
2021-08-26 16:25 ` [tip: timers/core] " tip-bot2 for Will Deacon
2021-06-08 15:43 ` [PATCH 2/2] clocksource/drivers/exynos_mct: Mark MCT device as CLOCK_EVT_FEAT_PERCPU Will Deacon
2021-06-09 11:41 ` Krzysztof Kozlowski
2021-06-17 0:59 ` Chanwoo Choi
2021-08-26 16:25 ` [tip: timers/core] " tip-bot2 for Will Deacon
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