diff options
| author | Andres Freund <andres@anarazel.de> | 2020-01-08 20:30:30 -0800 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-01-14 13:29:21 -0300 |
| commit | c1c8013ec34d7163431d18367808ea40b2e305f8 (patch) | |
| tree | 0d6d775da89079a9711dddbad0a7a6a69c343ac4 /scripts/patch-kernel | |
| parent | 49e0b6f4e95aa3ade8f512c50d1ccc113fe917b4 (diff) | |
perf c2c: Fix return type for histogram sorting comparision functions
Commit 722ddfde366f ("perf tools: Fix time sorting") changed - correctly
so - hist_entry__sort to return int64. Unfortunately several of the
builtin-c2c.c comparison routines only happened to work due the cast
caused by the wrong return type.
This causes meaningless ordering of both the cacheline list, and the
cacheline details page. E.g a simple:
perf c2c record -a sleep 3
perf c2c report
will result in cacheline table like
=================================================
Shared Data Cache Line Table
=================================================
#
# ------- Cacheline ---------- Total Tot - LLC Load Hitm - - Store Reference - - Load Dram - LLC Total - Core Load Hit - - LLC Load Hit -
# Index Address Node PA cnt records Hitm Total Lcl Rmt Total L1Hit L1Miss Lcl Rmt Ld Miss Loads FB L1 L2 Llc Rmt
# ..... .............. .... ...... ....... ...... ..... ..... ... .... ..... ...... ...... .... ...... ..... ..... ..... ... .... .......
0 0x7f0d27ffba00 N/A 0 52 0.12% 13 6 7 12 12 0 0 7 14 40 4 16 0 0 0
1 0x7f0d27ff61c0 N/A 0 6353 14.04% 1475 801 674 779 779 0 0 718 1392 5574 1299 1967 0 115 0
2 0x7f0d26d3ec80 N/A 0 71 0.15% 16 4 12 13 13 0 0 12 24 58 1 20 0 9 0
3 0x7f0d26d3ec00 N/A 0 98 0.22% 23 17 6 19 19 0 0 6 12 79 0 40 0 10 0
i.e. with the list not being ordered by Total Hitm.
Fixes: 722ddfde366f ("perf tools: Fix time sorting")
Signed-off-by: Andres Freund <andres@anarazel.de>
Tested-by: Michael Petlan <mpetlan@redhat.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org # v3.16+
Link: http://lore.kernel.org/lkml/20200109043030.233746-1-andres@anarazel.de
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'scripts/patch-kernel')
0 files changed, 0 insertions, 0 deletions