linux-kernel - Re: [PATCH v3 0/5] perf build: libtraceevent, libtracefs feature check with pkg-config

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Message-ID: <Zpf80mCx03GKOXzE@gentoo.org>
Date: Wed, 17 Jul 2024 19:18:10 +0200
From: Guilherme Amadio <amadio@...too.org>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: Namhyung Kim <namhyung@...nel.org>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Ian Rogers <irogers@...gle.com>,
	Thorsten Leemhuis <linux@...mhuis.info>, Leo Yan <leo.yan@....com>,
	linux-perf-users@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-trace-kernel@...r.kernel.org
Subject: Re: [PATCH v3 0/5] perf build: libtraceevent, libtracefs feature
 check with pkg-config

On Wed, Jul 17, 2024 at 12:31:47PM -0400, Steven Rostedt wrote:
> On Wed, 17 Jul 2024 09:27:58 -0700
> Namhyung Kim <namhyung@...nel.org> wrote:
> 
> > Hello,
> > 
> > On Fri, Jul 12, 2024 at 12:45 PM Guilherme Amadio <amadio@...too.org> wrote:
> > >
> > > Hi Namhyung, Arnaldo,
> > >
> > > Here is version 3 of the patchset. I see the change to send output to devnull
> > > has already been applied, so I am submitting the remaining work only.
> > >
> > > The difference with previous changes is that in v3 rather than add tests with
> > > pkg-config to check if dependencies are actually installed, we just set the
> > > flags and send any warning to devnull. The change that remains in this patchset
> > > is the fix for the other tools, which were inadvertently broken when the include
> > > for libtracefs changed from #include <tracefs/tracefs.h> to #include <tracefs.h>
> > > since the flags for the feature check are not set in the other tools Makefiles,
> > > it currently only works for perf. I recommend to either take at least patch 2/5
> > > that moves setting the flags to tools/build/Makefile.feature or to revert the two
> > > patches that have been applied. You can easily test the fix with the commands below:
> > >
> > > make -B -C tools/verification/rv VF=1
> > > make -B -C tools/tracing/latency VF=1
> > > make -B -C tools/tracing/rtla VF=1
> > >
> > > from the root of the repository. Only after the feature check flags are moved to
> > > Makefile.feature that it also fixes the other tools. Apologies for the breakage
> > > there.  
> > 
> > Steve, are you ok with having this patchset in the perf-tools tree?
> > 
> 
> I don't know as this is the first I've seen it. If you could have this
> resend with me Cc'd and/or Cc linux-trace-devel@...r.kernel.org then I
> can review and possibly ack it.

I will resend with the extra CC suggestions shortly and a cover letter
explaining everything.

Best regards,
-Guilherme