From: kajoljain <kjain@linux.ibm.com> To: Moritz Fischer <mdf@kernel.org> Cc: will@kernel.org, hao.wu@intel.com, mark.rutland@arm.com, trix@redhat.com, yilun.xu@intel.com, 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 17:16:42 +0530 [thread overview] Message-ID: <0d31afc5-b86e-4da6-878c-be4ba7b4a23a@linux.ibm.com> (raw) In-Reply-To: <YQezqZcOrePV/FnW@archbook> On 8/2/21 2:28 PM, Moritz Fischer wrote: > 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. Thanks Moritz for informing me. Thanks, Kajol Jain > > - Moritz >
WARNING: multiple messages have this Message-ID (diff)
From: kajoljain <kjain@linux.ibm.com> To: Moritz Fischer <mdf@kernel.org> Cc: mark.rutland@arm.com, maddy@linux.ibm.com, rnsastry@linux.ibm.com, trix@redhat.com, linux-fpga@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, linux-perf-users@vger.kernel.org, atrajeev@linux.vnet.ibm.com, will@kernel.org, yilun.xu@intel.com, hao.wu@intel.com Subject: Re: [PATCH v3] fpga: dfl: fme: Fix cpu hotplug issue in performance reporting Date: Mon, 2 Aug 2021 17:16:42 +0530 [thread overview] Message-ID: <0d31afc5-b86e-4da6-878c-be4ba7b4a23a@linux.ibm.com> (raw) In-Reply-To: <YQezqZcOrePV/FnW@archbook> On 8/2/21 2:28 PM, Moritz Fischer wrote: > 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. Thanks Moritz for informing me. Thanks, Kajol Jain > > - Moritz >
next prev parent reply other threads:[~2021-08-02 11:47 UTC|newest] Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-07-13 7:42 [PATCH v3] fpga: dfl: fme: Fix cpu hotplug issue in performance reporting Kajol Jain 2021-07-13 7:42 ` Kajol Jain 2021-08-02 7:45 ` kajoljain 2021-08-02 7:45 ` kajoljain 2021-08-02 8:58 ` Moritz Fischer 2021-08-02 8:58 ` Moritz Fischer 2021-08-02 11:46 ` kajoljain [this message] 2021-08-02 11:46 ` kajoljain
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