diff options
| author | Steven Rostedt (Google) <rostedt@goodmis.org> | 2023-12-28 22:16:45 -0500 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2023-12-28 22:26:09 -0500 |
| commit | 6abf2ad80ccc9865d0c49995af08318e7788c17e (patch) | |
| tree | 9a32db0d8ce296a7de314b0d0e8d177c9359be7f | |
| parent | 5b90189acd7be277c2aaa4dfd2945d23be7a3025 (diff) | |
| download | trace-cmd-6abf2ad80ccc9865d0c49995af08318e7788c17e.tar.gz | |
trace-cmd show: Add --buffer-subbuf-size option
Add an option to trace-cmd show that displays the subbuffer size in
kilobytes.
Link: https://lore.kernel.org/linux-trace-devel/20231229031907.69432-3-rostedt@goodmis.org
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
| -rw-r--r-- | Documentation/trace-cmd/trace-cmd-show.1.txt | 5 | ||||
| -rw-r--r-- | tracecmd/trace-show.c | 6 | ||||
| -rw-r--r-- | tracecmd/trace-usage.c | 1 |
3 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/trace-cmd/trace-cmd-show.1.txt b/Documentation/trace-cmd/trace-cmd-show.1.txt index ea2fda28..ac40dacf 100644 --- a/Documentation/trace-cmd/trace-cmd-show.1.txt +++ b/Documentation/trace-cmd/trace-cmd-show.1.txt @@ -60,6 +60,11 @@ OPTIONS *--buffer_total_size*:: Show the total size of all buffers. +*--buffer_subbuf_size*:: + Show the size in kilobytes of the sub-buffers of the ring buffer. + The ring buffer is broken up into equal size sub-buffers were an event can only + be as big as the sub-buffer data section (the size minus its meta data). + *--ftrace_filter*:: Show what function filters are set. diff --git a/tracecmd/trace-show.c b/tracecmd/trace-show.c index 796c587c..17eb0989 100644 --- a/tracecmd/trace-show.c +++ b/tracecmd/trace-show.c @@ -17,6 +17,7 @@ enum { OPT_ftrace_pid, OPT_ftrace_notrace, OPT_ftrace_filter, + OPT_buffer_subbuf_size_kb, OPT_buffer_total_size_kb, OPT_buffer_size_kb, OPT_current_tracer, @@ -42,6 +43,7 @@ void trace_show(int argc, char **argv) {"current_tracer", no_argument, NULL, OPT_current_tracer}, {"buffer_size", no_argument, NULL, OPT_buffer_size_kb}, {"buffer_total_size", no_argument, NULL, OPT_buffer_total_size_kb}, + {"buffer_subbuf_size", no_argument, NULL, OPT_buffer_subbuf_size_kb}, {"ftrace_filter", no_argument, NULL, OPT_ftrace_filter}, {"ftrace_notrace", no_argument, NULL, OPT_ftrace_notrace}, {"ftrace_pid", no_argument, NULL, OPT_ftrace_pid}, @@ -102,6 +104,10 @@ void trace_show(int argc, char **argv) show_instance_file(instance, "buffer_total_size_kb"); stop = 1; break; + case OPT_buffer_subbuf_size_kb: + show_instance_file(instance, "buffer_subbuf_size_kb"); + stop = 1; + break; case OPT_ftrace_filter: show_instance_file(instance, "set_ftrace_filter"); stop = 1; diff --git a/tracecmd/trace-usage.c b/tracecmd/trace-usage.c index 37d576b0..7dc9b187 100644 --- a/tracecmd/trace-usage.c +++ b/tracecmd/trace-usage.c @@ -180,6 +180,7 @@ static struct usage_help usage_help[] = { " --current_tracer\n" " --buffer_size (for buffer_size_kb)\n" " --buffer_total_size (for buffer_total_size_kb)\n" + " --buffer_subbuf_size (for buffer_subbuf_size_kb)\n" " --ftrace_filter (for set_ftrace_filter)\n" " --ftrace_notrace (for set_ftrace_notrace)\n" " --ftrace_pid (for set_ftrace_pid)\n" |