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

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Message-ID: <20240717123147.17169873@rorschach.local.home>
Date: Wed, 17 Jul 2024 12:31:47 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: Namhyung Kim <namhyung@...nel.org>
Cc: Guilherme Amadio <amadio@...too.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, 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.

-- Steve