From: Arnaldo Carvalho de Melo <acme@redhat.com>
To: Stephane Eranian <eranian@google.com>
Cc: linux-kernel@vger.kernel.org, peterz@infradead.org,
mingo@elte.hu, robert.richter@amd.com
Subject: Re: [PATCH] perf: fix broken perf inject -b
Date: Mon, 30 Jan 2012 18:04:32 -0200 [thread overview]
Message-ID: <20120130200432.GC5797@infradead.org> (raw)
In-Reply-To: <CABPqkBSzgc7WSbuS4L1gtCf+3u_q3fx002byArsMjKSxd5zw-g@mail.gmail.com>
Em Mon, Jan 30, 2012 at 08:53:26PM +0100, Stephane Eranian escreveu:
> On Mon, Jan 30, 2012 at 8:00 PM, Arnaldo Carvalho de Melo
> <acme@redhat.com> wrote:
> >
> > Em Mon, Jan 16, 2012 at 07:53:28PM +0100, Stephane Eranian escreveu:
> > > On Fri, Jan 13, 2012 at 5:54 PM, Stephane Eranian <eranian@google.com> wrote:
> > > > On Fri, Jan 13, 2012 at 5:53 PM, Arnaldo Carvalho de Melo <acme@redhat.com> wrote:
> > > >> Em Fri, Jan 13, 2012 at 03:47:31PM +0100, Stephane Eranian escreveu:
> > > >>> perf inject -b was broken. It would not inject any build_ids
> > > >>> into the stream. Furthermore, it would strip samples from the
> > > >>> stream.
> > <SNIP>
> > > >>> @@ -173,6 +178,7 @@ static int perf_event__inject_buildid(struct perf_tool *tool,
> > > >>> goto repipe;
> > > >>> }
> > > >>> + machine->pid = event->ip.pid;
> >
> > > I noticed that this statement conflicts with perf buildid-list (which
> > > I am also fixing for pipe mode).
> >
> > > I don't quite understand why, though.
> >
> > Have you reached any conclusion about this problem? I haven't looked at
> > it in detail, could you please elaborate more?
> >
>
> I ended up removing it. But I am not sure this is correct.
> Is the pid used in any way when processing buildids?
I can't think of any.
The same DSO could conceivably be present in the virtual machine, the
host, and in the workstation used for perf report. We just use the
build-id in the perf.data file to find the right symtab.
- Arnaldo
next prev parent reply other threads:[~2012-01-30 20:04 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-13 14:47 [PATCH] perf: fix broken perf inject -b Stephane Eranian
2012-01-13 16:53 ` Arnaldo Carvalho de Melo
2012-01-13 16:54 ` Stephane Eranian
2012-01-16 18:53 ` Stephane Eranian
2012-01-30 19:00 ` Arnaldo Carvalho de Melo
2012-01-30 19:53 ` Stephane Eranian
2012-01-30 20:04 ` Arnaldo Carvalho de Melo [this message]
2012-01-30 20:09 ` Stephane Eranian
2012-01-30 20:36 ` Arnaldo Carvalho de Melo
2012-01-31 5:58 ` Yanmin Zhang
2012-02-02 11:22 ` Stephane Eranian
2012-02-03 3:30 ` Yanmin Zhang
2012-01-26 14:16 ` Stephane Eranian
2012-01-26 14:23 ` Arnaldo Carvalho de Melo
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=20120130200432.GC5797@infradead.org \
--to=acme@redhat.com \
--cc=eranian@google.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=peterz@infradead.org \
--cc=robert.richter@amd.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