From: Chanwoo Choi <cw00.choi@samsung.com>
To: lukasz.luba@arm.com, k.konieczny@samsung.com, krzk@kernel.org,
kgene@kernel.org
Cc: s.nawrocki@samsung.com, willy.mh.wolff.ml@gmail.com,
b.zolnierkie@samsung.com, cw00.choi@samsung.com,
chanwoo@kernel.org, myungjoo.ham@samsung.com,
kyungmin.park@samsung.com, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 0/2] PM / devfreq: Add delayed timer for polling
Date: Thu, 9 Jul 2020 14:45:02 +0900 [thread overview]
Message-ID: <20200709054504.656-1-cw00.choi@samsung.com> (raw)
In-Reply-To: CGME20200709053339epcas1p23fb1c080b21c758940514c4672949cfa@epcas1p2.samsung.com
Add the delayed timer to devfreq framework in order to support
the periodical polling mode without stop caused by CPU idle state.
Some Non-CPU device must need to monitor the device status like
utilization regardless of CPU state.
- patch1 explains the detailed reason why the delayed timer is required.
- patch2 initializes that exynos5422-dmc device use delayed timer as default
instead of deferrable timer.
Changes from v2:
- Add reviewed-by tag
- Fix typo on patch description
- Remove 'RFC' work from patch title
- Check whether 'df->governor' is NULL or not on timer_store()
Chanwoo Choi (2):
PM / devfreq: Add support delayed timer for polling mode
memory: samsung: exynos5422-dmc: Use delayed timer as default
Documentation/ABI/testing/sysfs-class-devfreq | 12 +++
drivers/devfreq/devfreq.c | 86 ++++++++++++++++++-
drivers/memory/samsung/exynos5422-dmc.c | 1 +
include/linux/devfreq.h | 9 ++
4 files changed, 107 insertions(+), 1 deletion(-)
--
2.17.1
next parent reply other threads:[~2020-07-09 5:33 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20200709053339epcas1p23fb1c080b21c758940514c4672949cfa@epcas1p2.samsung.com>
2020-07-09 5:45 ` Chanwoo Choi [this message]
[not found] ` <CGME20200709053339epcas1p10278823f18b4650351f4e6f680d3d4a0@epcas1p1.samsung.com>
2020-07-09 5:45 ` [PATCH v2 1/2] PM / devfreq: Add support delayed timer for polling mode Chanwoo Choi
[not found] ` <CGME20200709053340epcas1p3bc307da98530bc166c7d354a62e4c894@epcas1p3.samsung.com>
2020-07-09 5:45 ` [PATCH v2 2/2] memory: samsung: exynos5422-dmc: Use delayed timer as default Chanwoo Choi
2020-07-13 7:24 ` [PATCH v2 0/2] PM / devfreq: Add delayed timer for polling Chanwoo Choi
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