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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-04-06 14:33:07 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-04-06 14:37:25 -0300 |
| commit | 11c8e39f5133aed9e0f8ffc624c7d5f64c97bc79 (patch) | |
| tree | 4199ace4214196c913f65af70c2a57ee83e1e4f5 /tools/perf/Documentation | |
| parent | 7206b900e6e4b7f4c2e766eab64ea1ca5303e421 (diff) | |
| download | blackbird-op-linux-11c8e39f5133aed9e0f8ffc624c7d5f64c97bc79.tar.gz blackbird-op-linux-11c8e39f5133aed9e0f8ffc624c7d5f64c97bc79.zip | |
perf trace: Infrastructure to show COMM strings for syscalls returning PIDs
Starting with clone, waitid and wait4:
# trace -e waitid,wait4
1.385 ( 1.385 ms): bash/12122 wait4(upid: -1, stat_addr: 0x7ffe0cee1720, options: UNTRACED|CONTINUED) = 1210 (ls)
1.426 ( 0.002 ms): bash/12122 wait4(upid: -1, stat_addr: 0x7ffe0cee1150, options: NOHANG|UNTRACED|CONTINUED) = 0
3.293 ( 0.604 ms): bash/1211 wait4(upid: -1, stat_addr: 0x7ffe0cee0560 ) = 1214 (sed)
3.342 ( 0.002 ms): bash/1211 wait4(upid: -1, stat_addr: 0x7ffe0cee01d0, options: NOHANG ) = -1 ECHILD No child processes
3.576 ( 0.016 ms): bash/12122 wait4(upid: -1, stat_addr: 0x7ffe0cee0550, options: NOHANG|UNTRACED|CONTINUED) = 1211 (bash)
^C# trace -e clone
0.027 ( 0.000 ms): systemd/1 ... [continued]: clone()) = 1227 (systemd)
0.050 ( 0.000 ms): systemd/1227 ... [continued]: clone()) = 0
^C[root@jouet ~]#
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-lyf5d3y5j15wikjb6pe6ukoi@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation')
0 files changed, 0 insertions, 0 deletions
