diff options
author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-07-20 11:32:05 -0300 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-07-20 15:16:25 -0300 |
commit | 082ab9a18e532864d1ceecfb50221df62b1d5a92 (patch) | |
tree | 5ff262d2099de106864d771940a4debdb1fc8a01 /tools/lib/string.c | |
parent | dd1a50377c92321f78fa4d0601bb4d88d88670ab (diff) | |
download | linux-stable-082ab9a18e532864d1ceecfb50221df62b1d5a92.tar.gz linux-stable-082ab9a18e532864d1ceecfb50221df62b1d5a92.tar.bz2 linux-stable-082ab9a18e532864d1ceecfb50221df62b1d5a92.zip |
perf trace: Filter out 'sshd' in the tracer ancestry in syswide tracing
Avoiding a loop, so now its quite convenient to ssh to a machine and
then simply do:
# perf trace
To trace all syscalls without causing a loop.
This was possible using --filter-pids, i.e. once you noticed the loop,
get the sshd pid and add it to --filter-pids, restarting the 'perf
trace'.
Now to figure out how to do that in a X terminal, the other common
scenario, which is way more involved, as there are multiple processes
communicating to process terminal activity...
Using --filter-pids + '-e \!syscall,names,you,dont,need' may be a good
approximation when having to do syswide tracing on your workstation.
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-68rjeao9wnpylla41htk7xps@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/lib/string.c')
0 files changed, 0 insertions, 0 deletions