hi,
adding support to display diff for more than 2 perf.data files.
Sending as RFC, since the change touches lot of hists code,
so I might be breaking something I missed.. still testing.
Also it could colide with Namhyung changes for group report
wrt patches 7 and 8, where I changed the linking of matching
hists entries.
The doc was updated with info about current perf diff processing.
Attached patches:
01/14 perf tool: Introduce perf_hpp__list for period related columns
02/14 perf tool: Add struct perf_hpp_fmt into hpp callbacks
03/14 perf tool: Fix period symbol_conf.field_sep display
04/14 perf diff: Remove displacement from struct hist_entry_diff
05/14 perf diff: Change compute methods to work with pair directly
06/14 perf diff: Change formula methods to work with pair directly
07/14 perf diff: Add callback to hists__match/hists__link functions
08/14 perf diff: Change diff command to work over multiple data files
09/14 perf diff: Update perf diff documentation for multiple data comparison
10/14 perf tool: Centralize default columns init in perf_hpp__init
11/14 perf diff: Making compute functions static
12/14 perf diff: Display data file info ahead of the diff output
13/14 perf diff: Display zero calculation results
14/14 perf diff: Add generic order option for compute sorting
Example of multiple perf diff output:
$ perf diff perf.data.[123456]
# Event 'cycles:u'
#
# Data files:
# [0] perf.data.1
# [1] perf.data.2
# [2] perf.data.3
# [3] perf.data.4
# [4] perf.data.5
# [5] perf.data.6
#
# Baseline/0 Delta/1 Delta/2 Delta/3 Delta/4 Delta/5 Shared Object
Symbol
# .......... ....... ....... ....... ....... ....... .................
.........................
#
+73.05% [kernel.kallsyms]
[k] page_fault
+26.16% ld-2.15.so
[.] _dl_next_ld_env_entry
+15.40% ld-2.15.so
[.] _dl_sysdep_start
71.48% -26.52% libc-2.15.so
[.] __strcmp_sse2
27.69% -1.65% -4.83% -4.68% ld-2.15.so
[.] dl_main
0.82% -0.05% -0.34% -0.15% -0.13% -0.03% ld-2.15.so
[.] _start
+39.15% libc-2.15.so
[.] error_tail
+73.18% libc-2.15.so
[.] __strcasecmp_l_sse2
+76.30% libc-2.15.so
[.] __stpcpy_sse2
+76.46% libc-2.15.so
[.] _IO_getline_info
thanks,
jirka
Cc: Arnaldo Carvalho de Melo <a...@ghostprotocols.net>
Cc: Peter Zijlstra <a.p.zijls...@chello.nl>
Cc: Ingo Molnar <mi...@elte.hu>
Cc: Paul Mackerras <pau...@samba.org>
Cc: Corey Ashford <cjash...@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweis...@gmail.com>
Cc: Namhyung Kim <namhy...@kernel.org>
---
tools/perf/Documentation/perf-diff.txt | 77 ++++++++--
tools/perf/builtin-diff.c | 747
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-------------------
tools/perf/ui/browsers/hists.c | 22 +--
tools/perf/ui/gtk/browser.c | 26 +---
tools/perf/ui/hist.c | 392
++++++++++++++---------------------------------
tools/perf/ui/stdio/hist.c | 17 +--
tools/perf/util/hist.c | 29 ++--
tools/perf/util/hist.h | 42 ++---
tools/perf/util/sort.h | 38 ++---
9 files changed, 855 insertions(+), 535 deletions(-)
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