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author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2013-03-12 11:49:18 -0400 |
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committer | Steven Rostedt <rostedt@goodmis.org> | 2013-03-15 00:36:01 -0400 |
commit | 77fd5c15e3216b901be69047ca43b05ae9099951 (patch) | |
tree | 1790b9bacd1d371cf03902efaf99cdc9d08abdec /include/linux | |
parent | 3209cff4490bee55fd2bc1d087cb8ecf2a686a88 (diff) |
tracing: Add snapshot trigger to function probes
echo 'schedule:snapshot:1' > /debug/tracing/set_ftrace_filter
This will cause the scheduler to trigger a snapshot the next time
it's called (you can use any function that's not called by NMI).
Even though it triggers only once, you still need to remove it with:
echo '!schedule:snapshot:0' > /debug/tracing/set_ftrace_filter
The :1 can be left off for the first command:
echo 'schedule:snapshot' > /debug/tracing/set_ftrace_filter
But this will cause all calls to schedule to trigger a snapshot.
This must be removed without the ':0'
echo '!schedule:snapshot' > /debug/tracing/set_ftrace_filter
As adding a "count" is a different operation (internally).
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'include/linux')
0 files changed, 0 insertions, 0 deletions