| commit | 0a59fac15fe3bbd3fe1dfb7eb2bef28c52dfefd0 | [log] [tgz] |
|---|---|---|
| author | Andi Kleen <ak@linux.intel.com> | Fri Mar 25 13:32:27 2016 -0700 |
| committer | Andi Kleen <ak@linux.intel.com> | Mon Mar 28 10:41:16 2016 -0700 |
| tree | afc1845e68609ef704b6f5e9953d1359bd518481 | |
| parent | 070336a6efabe7c19c226f3c6ab0f6190e199c89 [diff] |
perf, tools, 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>