From: Viresh Kumar <viresh.kumar@linaro.org>
To: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
Cc: linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org,
rjw@rjwysocki.net, linux-pm@vger.kernel.org, pc@us.ibm.com,
anton@samba.org, ego@linux.vnet.ibm.com,
shreyas@linux.vnet.ibm.com
Subject: Re: [PATCH v6 1/5] cpufreq: powernv: Hot-plug safe the kworker thread
Date: Mon, 25 Jan 2016 11:19:20 +0530 [thread overview]
Message-ID: <20160125054920.GA3183@vireshk> (raw)
In-Reply-To: <1453447145-17722-2-git-send-email-shilpa.bhat@linux.vnet.ibm.com>
On 22-01-16, 12:49, Shilpasri G Bhat wrote:
> In the kworker_thread powernv_cpufreq_work_fn(), we can end up
> sending an IPI to a cpu going offline. This is a rare corner case
> which is fixed using {get/put}_online_cpus(). Along with this fix,
> this patch adds changes to do oneshot cpumask_{clear/and} operation.
>
> Suggested-by: Shreyas B Prabhu <shreyas@linux.vnet.ibm.com>
> Suggested-by: Gautham R Shenoy <ego@linux.vnet.ibm.com>
> Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
> Reviewed-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
> ---
> Changes form v5:
> - Fix the kbuild-error:
> drivers/cpufreq/powernv-cpufreq.c:428:2: error: implicit declaration of
> function 'get_online_cpus' [-Werror=implicit-function-declaration
>
> drivers/cpufreq/powernv-cpufreq.c | 19 +++++++++++--------
> 1 file changed, 11 insertions(+), 8 deletions(-)
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
--
viresh
next prev parent reply other threads:[~2016-01-25 5:49 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-22 7:19 [PATCH v6 0/5] cpufreq: powernv: Redesign the presentation of throttle notification and solve bug-fixes in the driver Shilpasri G Bhat
2016-01-22 7:19 ` [PATCH v6 1/5] cpufreq: powernv: Hot-plug safe the kworker thread Shilpasri G Bhat
2016-01-25 5:49 ` Viresh Kumar [this message]
2016-01-22 7:19 ` [PATCH v6 2/5] cpufreq: powernv: Remove cpu_to_chip_id() from hot-path Shilpasri G Bhat
2016-01-23 8:59 ` Balbir Singh
2016-01-25 5:38 ` Gautham R Shenoy
2016-01-25 5:53 ` Viresh Kumar
2016-01-22 7:19 ` [PATCH v6 3/5] cpufreq: powernv/tracing: Add powernv_throttle tracepoint Shilpasri G Bhat
2016-01-22 7:19 ` [PATCH v6 4/5] cpufreq: powernv: Replace pr_info with trace print for throttle event Shilpasri G Bhat
2016-01-25 5:58 ` Viresh Kumar
2016-01-22 7:19 ` [PATCH v6 5/5] cpufreq: powernv: Add sysfs attributes to show throttle stats Shilpasri G Bhat
2016-01-23 8:40 ` Balbir Singh
2016-01-25 6:46 ` Shilpasri G Bhat
2016-01-25 5:43 ` [v6, " Michael Ellerman
2016-01-25 5:43 ` Michael Ellerman
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