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From: Moritz Fischer <mdf@kernel.org>
To: kajoljain <kjain@linux.ibm.com>
Cc: will@kernel.org, hao.wu@intel.com, mark.rutland@arm.com,
	trix@redhat.com, yilun.xu@intel.com, mdf@kernel.org,
	linux-fpga@vger.kernel.org, maddy@linux.ibm.com,
	atrajeev@linux.vnet.ibm.com, linux-kernel@vger.kernel.org,
	linuxppc-dev@lists.ozlabs.org, rnsastry@linux.ibm.com,
	linux-perf-users@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH v3] fpga: dfl: fme: Fix cpu hotplug issue in performance reporting
Date: Mon, 2 Aug 2021 01:58:17 -0700	[thread overview]
Message-ID: <YQezqZcOrePV/FnW@archbook> (raw)
In-Reply-To: <61495dc0-f496-992c-1d2a-9229a04e6e44@linux.ibm.com>

On Mon, Aug 02, 2021 at 01:15:00PM +0530, kajoljain wrote:
> 
> 
> On 7/13/21 1:12 PM, Kajol Jain wrote:
> > The performance reporting driver added cpu hotplug
> > feature but it didn't add pmu migration call in cpu
> > offline function.
> > This can create an issue incase the current designated
> > cpu being used to collect fme pmu data got offline,
> > as based on current code we are not migrating fme pmu to
> > new target cpu. Because of that perf will still try to
> > fetch data from that offline cpu and hence we will not
> > get counter data.
> > 
> > Patch fixed this issue by adding pmu_migrate_context call
> > in fme_perf_offline_cpu function.
> > 
> > Fixes: 724142f8c42a ("fpga: dfl: fme: add performance reporting support")
> > Tested-by: Xu Yilun <yilun.xu@intel.com>
> > Acked-by: Wu Hao <hao.wu@intel.com>
> > Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
> > Cc: stable@vger.kernel.org
> > ---
> 
> Any update on this patch? Please let me know if any changes required.
> 
> Thanks,
> Kajol Jain

It's in my 'fixes' branch.

- Moritz

  reply	other threads:[~2021-08-02  8:58 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-13  7:42 Kajol Jain
2021-08-02  7:45 ` kajoljain
2021-08-02  8:58   ` Moritz Fischer [this message]
2021-08-02 11:46     ` kajoljain

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