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| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2013-04-30 15:46:14 -0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2013-06-11 18:38:46 -0400 |
| commit | ad71d889b88055e61e3970a6744a271a51a94f42 (patch) | |
| tree | 716f6e043847000a82449270e3b2d5dcdc9c4f79 /kernel/trace/trace_syscalls.c | |
| parent | 317ddd256b9c24b0d78fa8018f80f1e495481a10 (diff) | |
| download | talos-obmc-linux-ad71d889b88055e61e3970a6744a271a51a94f42.tar.gz talos-obmc-linux-ad71d889b88055e61e3970a6744a271a51a94f42.zip | |
tracing: Add function probe to trigger a ftrace dump to console
Add the "dump" command to have the ftrace buffer dumped to console if
a function is hit. This is useful when debugging a tripple fault,
where you have an idea of a function that is called just before the
tripple fault occurs, and can tell ftrace to dump its content out
to the console before it continues.
Format is:
<function>:dump
echo 'bad_address:dump' > /debug/tracing/set_ftrace_filter
To remove this:
echo '!bad_address:dump' > /debug/tracing/set_ftrace_filter
Requested-by: Luis Claudio R. Goncalves <lclaudio@uudg.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_syscalls.c')
0 files changed, 0 insertions, 0 deletions
