linux-kernel - Re: [PATCH v3 1/5] perf tools: Add all matching dynamic sort keys for field name

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Date:	Wed, 6 Jan 2016 12:19:39 +0100
From:	Jiri Olsa <jolsa@...hat.com>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Jiri Olsa <jolsa@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Andi Kleen <andi@...stfloor.org>,
	Wang Nan <wangnan0@...wei.com>
Subject: Re: [PATCH v3 1/5] perf tools: Add all matching dynamic sort keys
 for field name

On Wed, Jan 06, 2016 at 09:54:57AM +0900, Namhyung Kim wrote:
> When a perf.data file has multiple events, it's likely to be similar
> (tracepoint) events.  In that case, they might have same field name so
> add all of them to sort keys instead of bailing out.
> 
> In addition, it contains a trivial whitespace fix at callsite of
> add_all_dynamic_fields().
> 
> Acked-by: Jiri Olsa <jolsa@...nel.org>
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>

hum, I haven't tried with this last version but I get all
hist tests failing on acme's perf/core and it seems to be
related to sorting changes:

[jolsa@...va perf]$ ./perf test hist 
15: Test matching and linking multiple hists                 : FAILED!
25: Test filtering hist entries                              : FAILED!
28: Test output sorting of hist entries                      : FAILED!
29: Test cumulation of child hist entries                    : FAILED!


[jolsa@...va perf]$ ./perf test 15 -v
15: Test matching and linking multiple hists                 :
--- start ---
test child forked, pid 10676
perf: Segmentation fault
Obtained 16 stack frames.
./perf(dump_stack+0x2d) [0x50f1d7]
./perf(sighandler_dump_stack+0x2d) [0x50f2b7]
/lib64/libc.so.6(+0x34a4f) [0x7fb0b1178a4f]
./perf() [0x508c40]
./perf() [0x508e23]
./perf(setup_sorting+0x26) [0x5097b0]
./perf(test__hists_link+0xb6) [0x487f43]
./perf() [0x4725c0]
./perf() [0x4726ff]
./perf() [0x472986]
./perf(cmd_test+0x1fe) [0x472ddc]
./perf() [0x49b2ab]
./perf() [0x49b513]
./perf() [0x49b661]
./perf(main+0x258) [0x49b9e2]
/lib64/libc.so.6(__libc_start_main+0xef) [0x7fb0b11646ff]
test child interrupted
---- end ----
Test matching and linking multiple hists: FAILED!


thanks,
jirka
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