linux-kernel - Re: [PATCH] perf report: Add 'tgid' sort key

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Message-ID: <Z74V0hZXrTLM6VIJ@x1>
Date: Tue, 25 Feb 2025 20:11:14 +0100
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Namhyung Kim <namhyung@...nel.org>
Cc: Ian Rogers <irogers@...gle.com>, Kan Liang <kan.liang@...ux.intel.com>,
	Jiri Olsa <jolsa@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>, LKML <linux-kernel@...r.kernel.org>,
	linux-perf-users@...r.kernel.org,
	Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH] perf report: Add 'tgid' sort key

On Tue, Feb 25, 2025 at 08:07:18PM +0100, Arnaldo Carvalho de Melo wrote:
> On Mon, Feb 24, 2025 at 11:51:35PM -0800, Namhyung Kim wrote:
> > On Mon, Feb 24, 2025 at 08:40:37PM -0800, Ian Rogers wrote:
> > > On Mon, Feb 24, 2025 at 6:51 PM Namhyung Kim <namhyung@...nel.org> wrote:
> > > > On Mon, Feb 24, 2025 at 10:18:37AM -0800, Ian Rogers wrote:
> > [SNIP]
> > > > > I thought the real-time processing had to use
> > > > > maps__fixup_overlap_and_insert (rather than maps__insert) as mmap
> > > > > events only give us VMA data and two mmaps may have been merged.
> > > > > Shouldn't doing this change be the simplest fix?

> > > > Make sense.  How about this?

> > > Lgtm, I have no way to test the issue. Why does maps__fixup_end need
> > > to get pushed later?

> > I just noticed it would add extra kernel maps after modules.  I think it
> > should fixup end address of the kernel maps after adding all maps first.

> > Arnaldo, can you please test this?
 
> Trying it now.

Now we have something different:

root@...ber:~# perf record sleep
sleep: missing operand
Try 'sleep --help' for more information.
[ perf record: Woken up 1 times to write data ]
perf: util/maps.c:80: check_invariants: Assertion `RC_CHK_EQUAL(map__kmap(map)->kmaps, maps)' failed.
Aborted (core dumped)
root@...ber:~#