diff options
| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2015-09-24 11:33:26 -0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2015-10-25 21:33:55 -0400 |
| commit | 4909010788640b7101bf50cddb7c5e60172b4433 (patch) | |
| tree | d2d0d1d731194a6b0fee3ddc7838ab7d1c1e3513 /kernel/trace/trace.h | |
| parent | 7904b5c4988e18b50056b5e71a3ffca752a8a451 (diff) | |
tracing: Add set_event_pid directory for future use
Create a tracing directory called set_event_pid, which currently has no
function, but will be used to filter all events for the tracing instance or
the pids that are added to the file.
The reason no functionality is added with this commit is that this commit
focuses on the creation and removal of the pids in a safe manner. And tests
can be made against this change to make sure things are correct before
hooking features to the list of pids.
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace.h')
| -rw-r--r-- | kernel/trace/trace.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index fb8a61c710ea..250481043bb5 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -176,6 +176,12 @@ struct trace_options { struct trace_option_dentry *topts; }; +struct trace_pid_list { + unsigned int nr_pids; + int order; + pid_t *pids; +}; + /* * The trace array - an array of per-CPU trace arrays. This is the * highest level data structure that individual tracers deal with. @@ -201,6 +207,7 @@ struct trace_array { bool allocated_snapshot; unsigned long max_latency; #endif + struct trace_pid_list __rcu *filtered_pids; /* * max_lock is used to protect the swapping of buffers * when taking a max snapshot. The buffers themselves are |