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author | 2016-05-20 13:15:08 -0700 | |
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committer | 2016-05-23 11:25:16 -0300 | |
commit | 508be0dfe6287d4e6452f5a1dc08856df74cb217 (patch) | |
tree | c2144a1c58044bf666c25135a23ffd9687899e2c /tools/perf/util/hist.h | |
parent | perf evsel: Record fd into perf_mmap (diff) | |
download | linux-508be0dfe6287d4e6452f5a1dc08856df74cb217.tar.gz linux-508be0dfe6287d4e6452f5a1dc08856df74cb217.tar.bz2 linux-508be0dfe6287d4e6452f5a1dc08856df74cb217.zip |
perf report: Add srcline_from/to branch sort keys
Add "srcline_from" and "srcline_to" branch sort keys that allow to show
the source lines of a branch.
That makes it much easier to track down where particular branches happen
in the program, for example to examine branch mispredictions, or to
associate it with cycle counts:
% perf record -b -e cycles:p ./tcall
% perf report --sort srcline_from,srcline_to,mispredict
...
15.10% tcall.c:18 tcall.c:10 N
14.83% tcall.c:11 tcall.c:5 N
14.12% tcall.c:7 tcall.c:12 N
14.04% tcall.c:12 tcall.c:5 N
12.42% tcall.c:17 tcall.c:18 N
12.39% tcall.c:7 tcall.c:13 N
12.27% tcall.c:13 tcall.c:17 N
...
% perf report --sort srcline_from,srcline_to,cycles
...
17.12% tcall.c:18 tcall.c:11 1
17.01% tcall.c:12 tcall.c:6 1
16.98% tcall.c:11 tcall.c:6 1
15.91% tcall.c:17 tcall.c:18 1
6.38% tcall.c:7 tcall.c:17 7
4.80% tcall.c:7 tcall.c:12 8
4.21% tcall.c:7 tcall.c:17 8
2.67% tcall.c:7 tcall.c:12 7
2.62% tcall.c:7 tcall.c:12 10
2.10% tcall.c:7 tcall.c:17 9
1.58% tcall.c:7 tcall.c:12 6
1.44% tcall.c:7 tcall.c:12 5
1.38% tcall.c:7 tcall.c:12 9
1.06% tcall.c:7 tcall.c:17 13
1.05% tcall.c:7 tcall.c:12 4
1.01% tcall.c:7 tcall.c:17 6
Open issues:
- Some kernel symbols get misresolved.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lkml.kernel.org/r/1463775308-32748-1-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/hist.h')
-rw-r--r-- | tools/perf/util/hist.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index 0f84bfb42bb1..7b54ccf1b737 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -52,6 +52,8 @@ enum hist_column { HISTC_MEM_IADDR_SYMBOL, HISTC_TRANSACTION, HISTC_CYCLES, + HISTC_SRCLINE_FROM, + HISTC_SRCLINE_TO, HISTC_TRACE, HISTC_NR_COLS, /* Last entry */ }; |