mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/
synced 2026-10-24 19:10:26 +00:00
a2297e74a0
Allow the addr2line style to be specified on the `perf report` command
line or in the .perfconfig file.
Committer testing:
The methods:
# perf probe -x ~/bin/perf -F *__addr2line
cmd__addr2line
libbfd__addr2line
libdw__addr2line
llvm__addr2line
#
So if we configure one of them, say 'addr2line':
# perf config addr2line.style=addr2line
# perf config addr2line.style
addr2line.style=addr2line
#
And have probes on all of them:
# perf probe -x ~/bin/perf *__addr2line
Added new events:
probe_perf:cmd__addr2line (on *__addr2line in /home/acme/bin/perf)
probe_perf:llvm__addr2line (on *__addr2line in /home/acme/bin/perf)
probe_perf:libbfd__addr2line (on *__addr2line in /home/acme/bin/perf)
probe_perf:libdw__addr2line (on *__addr2line in /home/acme/bin/perf)
You can now use it in all perf tools, such as:
perf record -e probe_perf:libdw__addr2line -aR sleep 1
#
Only the selected method should be used:
# perf stat -e probe_perf:*_addr2line perf report -f --dso perf --stdio -s srcfile,srcline
# Total Lost Samples: 0
#
# Samples: 4K of event 'cpu/cycles/Pu'
# Event count (approx.): 5535180842
#
# Overhead Source File Source:Line
# ........ ............ ...............
#
99.04% inlineloop.c inlineloop.c:21
0.46% inlineloop.c inlineloop.c:20
#
# (Tip: For hierarchical output, try: perf report --hierarchy)
#
Performance counter stats for 'perf report -f --dso perf --stdio -s srcfile,srcline':
44 probe_perf:cmd__addr2line
0 probe_perf:llvm__addr2line
0 probe_perf:libbfd__addr2line
0 probe_perf:libdw__addr2line
0.035915611 seconds time elapsed
0.028008000 seconds user
0.009051000 seconds sys
#
I checked and that is the case for the other methods.
Also when using:
# perf config addr2line.style=libdw,llvm
Performance counter stats for 'perf report -f --dso perf --stdio -s srcfile,srcline':
0 probe_perf:cmd__addr2line
23 probe_perf:llvm__addr2line
0 probe_perf:libbfd__addr2line
44 probe_perf:libdw__addr2line
Reviewed-by: James Clark <james.clark@linaro.org>
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Howard Chu <howardchu95@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephen Brennan <stephen.s.brennan@oracle.com>
Cc: Tony Jones <tonyj@suse.de>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
989 lines
20 KiB
989 lines
20 KiB