linux-kernel - Re: [PATCH v8 2/5] perf tools: sync addition of PERF_MEM_SNOOPX

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Message-ID: <YnwAmMl7Yaz/qwrI@kernel.org>
Date:   Wed, 11 May 2022 15:29:44 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Leo Yan <leo.yan@...aro.org>
Cc:     Ali Saidi <alisaidi@...zon.com>, linux-kernel@...r.kernel.org,
        linux-perf-users@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, german.gomez@....com,
        benh@...nel.crashing.org, Nick.Forrington@....com,
        alexander.shishkin@...ux.intel.com, andrew.kilroy@....com,
        james.clark@....com, john.garry@...wei.com, jolsa@...nel.org,
        kjain@...ux.ibm.com, lihuafei1@...wei.com, mark.rutland@....com,
        mathieu.poirier@...aro.org, mingo@...hat.com, namhyung@...nel.org,
        peterz@...radead.org, will@...nel.org
Subject: Re: [PATCH v8 2/5] perf tools: sync addition of PERF_MEM_SNOOPX_PEER

Em Wed, May 11, 2022 at 03:28:00PM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Wed, May 11, 2022 at 10:20:04AM +0800, Leo Yan escreveu:
> > On Tue, May 10, 2022 at 01:28:38PM -0300, Arnaldo Carvalho de Melo wrote:
> > > Em Wed, May 04, 2022 at 06:48:47PM +0000, Ali Saidi escreveu:
> > > > Add a flag to the perf mem data struct to signal that a request caused a
> > > > cache-to-cache transfer of a line from a peer of the requestor and
> > > > wasn't sourced from a lower cache level.  The line being moved from one
> > > > peer cache to another has latency and performance implications. On Arm64
> > > > Neoverse systems the data source can indicate a cache-to-cache transfer
> > > > but not if the line is dirty or clean, so instead of overloading HITM
> > > > define a new flag that indicates this type of transfer.
> > > > 
> > > > Signed-off-by: Ali Saidi <alisaidi@...zon.com>
> > > > Reviewed-by: Leo Yan <leo.yan@...aro.org>
> > > 
> > > Was this already merged on the ARM kernel tree?
> > 
> > No, I don't think this patch has been merged on Arm kernel tree.  I searched
> > Arm and Arm64 git repos, none of them has merged this patch.
> > 
> > https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git/log/?qt=author&q=Ali+Saidi
> > http://git.armlinux.org.uk/cgit/linux-arm.git/log/?qt=author&q=Ali+Saidi
> > 
> > P.s. Ali missed to include German's review tag, see:
> > https://lore.kernel.org/lkml/458a2de1-dc93-7e2d-5dc5-fbcd670572b6@arm.com/
> > 
> > Do you want us to resend the patch set for adding tags?
> 
> I use b4 and it should collect Reviewed-by, Acked-by, etc tags, for
> instance, if I use the message-id in your message:
> 
> ⬢[acme@...lbox perf]$ b4 am -ctsl --cc-trailers 20220511022004.GA956170@...y-ThinkPad-X240s
> Looking up https://lore.kernel.org/r/20220511022004.GA956170%40leoy-ThinkPad-X240s
> Grabbing thread from lore.kernel.org/all/20220511022004.GA956170%40leoy-ThinkPad-X240s/t.mbox.gz
> Checking for newer revisions on https://lore.kernel.org/all/
> Analyzing 12 messages in the thread
<SNIP>
>   ✓ [PATCH v8 5/5] perf arm-spe: Use SPE data source for neoverse cores
>     + Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
>     + Link: https://lore.kernel.org/r/20220504184850.24986-6-alisaidi@amazon.com
>     + Cc: Nick.Forrington@....com
>     + Cc: andrew.kilroy@....com
>     + Cc: james.clark@....com
>     + Cc: mark.rutland@....com
>     + Cc: john.garry@...wei.com
>     + Cc: lihuafei1@...wei.com
>     + Cc: peterz@...radead.org
>     + Cc: benh@...nel.crashing.org
>     + Cc: acme@...nel.org
>     + Cc: jolsa@...nel.org
>     + Cc: namhyung@...nel.org
>     + Cc: will@...nel.org
>     + Cc: mathieu.poirier@...aro.org
>     + Cc: kjain@...ux.ibm.com
>     + Cc: alexander.shishkin@...ux.intel.com
>     + Cc: linux-arm-kernel@...ts.infradead.org
>     + Cc: mingo@...hat.com
>     + Cc: linux-kernel@...r.kernel.org
>     + Cc: linux-perf-users@...r.kernel.org
>   ---
>   ✓ Signed: DKIM/amazon.com
> ---
> Total patches: 5
> ---
> Cover: ./v8_20220504_alisaidi_perf_arm_spe_decode_spe_source_and_use_for_perf_c2c.cover
>  Link: https://lore.kernel.org/r/20220504184850.24986-1-alisaidi@amazon.com
>  Base: not specified
>        git am ./v8_20220504_alisaidi_perf_arm_spe_decode_spe_source_and_use_for_perf_c2c.mbx
> ⬢[acme@...lbox perf]$
> 
> Somehow it is not being collected... :-\
> 
> Not even when I use:
> 
> > P.s. Ali missed to include German's review tag, see:
> > https://lore.kernel.org/lkml/458a2de1-dc93-7e2d-5dc5-fbcd670572b6@arm.com/
> 
> 
> 458a2de1-dc93-7e2d-5dc5-fbcd670572b6@....com
> 
> Will try updating b4...

Didn't help, so please collect the new tags and resubmit.

- Arnaldo