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

[Jiri Olsa <jolsa@redhat.com>]

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@kernel.org>
> Signed-off-by: Namhyung Kim <namhyung@kernel.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@krava 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@krava 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