From: Viresh Kumar <viresh.kumar@linaro.org>
To: Qian Cai <quic_qiancai@quicinc.com>
Cc: Rafael Wysocki <rjw@rjwysocki.net>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Jonathan Corbet <corbet@lwn.net>, Len Brown <lenb@kernel.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Paul Mackerras <paulus@samba.org>,
Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>,
linux-pm@vger.kernel.org,
Vincent Guittot <vincent.guittot@linaro.org>,
Ionela Voinescu <ionela.voinescu@arm.com>,
Dirk Brandewie <dirk.j.brandewie@intel.com>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 0/5] cpufreq: cppc: Fix suspend/resume specific races with FIE code
Date: Tue, 15 Jun 2021 15:08:40 +0530 [thread overview]
Message-ID: <20210615093840.a5bca3a6bgmkorwi@vireshk-i7> (raw)
In-Reply-To: <20210615075056.dfkbiftuoihtrfpo@vireshk-i7>
On 15-06-21, 13:20, Viresh Kumar wrote:
> I can see one place where race can happen, i.e. between
> topology_clear_scale_freq_source() and topology_scale_freq_tick(). It
> is possible that sfd->set_freq_scale() may get called for a previously
> set handler as there is no protection there.
>
> I will see how to fix that. But I am not sure if the issue reported
> above comes from there.
I have tried to fix this race and pushed the relevant patch to my
branch. Please pick the latest branch and hopefully everything will
just work.
--
viresh
next prev parent reply other threads:[~2021-06-15 9:38 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-10 8:23 [PATCH 0/5] cpufreq: cppc: Fix suspend/resume specific races with FIE code Viresh Kumar
2021-06-10 8:23 ` [PATCH 1/5] cpufreq: cppc: Migrate to ->exit() callback instead of ->stop_cpu() Viresh Kumar
2021-06-10 8:23 ` [PATCH 2/5] cpufreq: intel_pstate: " Viresh Kumar
2021-06-10 8:23 ` [PATCH 3/5] cpufreq: powerenv: " Viresh Kumar
2021-06-10 8:24 ` [PATCH 4/5] cpufreq: Add start_cpu() and stop_cpu() callbacks Viresh Kumar
2021-06-10 8:24 ` [PATCH 5/5] cpufreq: cppc: Fix suspend/resume specific races with the FIE code Viresh Kumar
2021-06-14 13:48 ` [PATCH 0/5] cpufreq: cppc: Fix suspend/resume specific races with " Qian Cai
2021-06-15 7:50 ` Viresh Kumar
2021-06-15 9:38 ` Viresh Kumar [this message]
2021-06-15 12:17 ` Qian Cai
2021-06-16 4:57 ` Viresh Kumar
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