linux-perf-users.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: kajoljain <kjain@linux.ibm.com>
To: Greg KH <gregkh@linuxfoundation.org>
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.vnet.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] fpga: dfl: fme: Fix cpu hotplug issue in performance reporting
Date: Tue, 29 Jun 2021 13:38:33 +0530	[thread overview]
Message-ID: <8a70f71a-f75c-427b-cf6a-b63bf7682f36@linux.ibm.com> (raw)
In-Reply-To: <YNrLRLyyUeDemxTS@kroah.com>



On 6/29/21 12:57 PM, Greg KH wrote:
> On Tue, Jun 29, 2021 at 12:45:20PM +0530, kajoljain wrote:
>>
>>
>> On 6/28/21 3:47 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.
>>>
>>
>> Adding stable@vger.kernel.org in cc list as suggested by Moritz Fischer.
> 
> 
> <formletter>
> 
> This is not the correct way to submit patches for inclusion in the
> stable kernel tree.  Please read:
>     https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
> for how to do this properly.

Thanks Greg for pointing it, I will take care in my next version.

Thanks,
Kajol Jain

> 
> </formletter>
> 

      reply	other threads:[~2021-06-29  8:08 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-28 10:17 [PATCH] fpga: dfl: fme: Fix cpu hotplug issue in performance reporting Kajol Jain
2021-06-29  7:15 ` kajoljain
2021-06-29  7:27   ` Greg KH
2021-06-29  8:08     ` kajoljain [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=8a70f71a-f75c-427b-cf6a-b63bf7682f36@linux.ibm.com \
    --to=kjain@linux.ibm.com \
    --cc=atrajeev@linux.vnet.ibm.com \
    --cc=gregkh@linuxfoundation.org \
    --cc=hao.wu@intel.com \
    --cc=linux-fpga@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-perf-users@vger.kernel.org \
    --cc=linuxppc-dev@lists.ozlabs.org \
    --cc=maddy@linux.vnet.ibm.com \
    --cc=mark.rutland@arm.com \
    --cc=mdf@kernel.org \
    --cc=rnsastry@linux.ibm.com \
    --cc=stable@vger.kernel.org \
    --cc=trix@redhat.com \
    --cc=will@kernel.org \
    --cc=yilun.xu@intel.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).