linux-kernel - Re: [PATCH v7 0/3] perf arm-spe: Add support for synthetic events

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Date:   Tue, 26 May 2020 20:54:39 +0100
From:   Will Deacon <will@...nel.org>
To:     Leo Yan <leo.yan@...aro.org>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        James Clark <james.clark@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Al Grant <al.grant@....com>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Mike Leach <mike.leach@...aro.org>
Subject: Re: [PATCH v7 0/3] perf arm-spe: Add support for synthetic events

On Tue, May 26, 2020 at 06:43:37PM +0800, Leo Yan wrote:
> On Tue, May 26, 2020 at 11:26:03AM +0100, Will Deacon wrote:
> > On Fri, May 22, 2020 at 11:09:19AM +0800, Leo Yan wrote:
> > > On Mon, May 04, 2020 at 07:56:22PM +0800, Leo Yan wrote:
> > > > This patch set is to support synthetic events with enabling Arm SPE
> > > > decoder.  Since before Xiaojun Tan (Hisilicon) and James Clark (Arm)
> > > > have contributed much for this task, so this patch set is based on their
> > > > privous work and polish for the version 7.
> > > > 
> > > > The main work in this version is to polished the core patch "perf
> > > > arm-spe: Support synthetic events", e.g. rewrite the code to calculate
> > > > ip, packet generation for multiple types (L1 data cache, Last level
> > > > cache, TLB, remote access, etc).  It also heavily refactors code for
> > > > data structure and program flow, which removed unused fields in
> > > > structure and polished the program flow to achieve neat code as
> > > > possible.
> > > > 
> > > > This patch set has been checked with checkpatch.pl, though it leaves
> > > > several warnings, but these warnings are delibarately kept after
> > > > reviewing.  Some warnings ask to add maintainer (so far it's not
> > > > necessary), and some warnings complaint for patch 02 "perf auxtrace:
> > > > Add four itrace options" for the text format, since need to keep the
> > > > consistency with the same code format in the source code, this is why
> > > > this patch doesn't get rid of checkpatch warnings.
> > > 
> > > Gentle ping ...
> > > 
> > > It would be appreciate if can get some review for this patch set.
> > 
> > I was hoping that James Clark would have a look, since he was the last
> > person to go near the userspace side of SPE.
> 
> Yes, I have offline synced with James and James has verified this
> patch set at his side.
> 
> I don't want to rush to ask Arnaldo to merge patches, so just
> want to get wider reviewing if possible; otherwise, I will rebase this
> patch set and resend to ML.

One thing that might be useful is if James could offer his Tested-by or
Acked-by on the public mailing list. Neither Arnaldo nor I have details
about your offline sync!

Will