From: 'Guanjun' <guanjun@linux.alibaba.com>
To: schspa@gmail.com, rafael@kernel.org, viresh.kumar@linaro.org
Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
guanjun@linux.alibaba.com, zelin.deng@linux.alibaba.com
Subject: [PATCH 0/1] cpufreq: Fix show()/store() issue for hotplugging
Date: Wed, 19 Oct 2022 16:40:44 +0800 [thread overview]
Message-ID: <1666168845-67690-1-git-send-email-guanjun@linux.alibaba.com> (raw)
From: Zelin Deng <zelin.deng@linux.alibaba.com>
Hello maintainers,
After I brought one CPU (64) offline, I got failure when I used lscpu:
lscpu: cannot read /sys/devices/system/cpu/cpu64/cpufreq/cpuinfo_max_freq: Device or resource busy
I found in commit d4627a287e251, policy_is_inactive() check was added to
avoid the case in which policy initialization failed. However it didn't
consider the situation in which policy has been created successfully but
is not inactive: CPU is hotplugging offline.
This patch just add an addtional check whether CPU is online or not to
fix the issue.
Zelin Deng (1):
cpufreq: Fix show()/store() issue for hotplugging offline CPU
drivers/cpufreq/cpufreq.c | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)
--
2.32.0.GIT
next reply other threads:[~2022-10-19 8:45 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-19 8:40 'Guanjun' [this message]
2022-10-19 8:40 ` [PATCH 1/1] cpufreq: Fix show()/store() issue for hotplugging offline CPU 'Guanjun'
2022-10-19 11:47 ` Rafael J. Wysocki
2022-10-21 6:11 ` guanjun
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