Commit a8f87a5c authored by Changbin Du's avatar Changbin Du Committed by Arnaldo Carvalho de Melo
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perf: ftrace: Allow set graph depth by '--graph-opts' 



This is to have a consistent view of all graph tracer options.
The original option '--graph-depth' is marked as deprecated.

Signed-off-by: default avatarChangbin Du <changbin.du@gmail.com>
Acked-by: default avatarNamhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Link: http://lore.kernel.org/lkml/20200808023141.14227-15-changbin.du@gmail.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 00c85d5f

tools/perf/Documentation/perf-ftrace.txt

+1 −4
Original line number Diff line number Diff line
@@ -98,16 +98,13 @@ OPTIONS 
	specify multiple functions. It will be passed to 'set_graph_notrace'

	in tracefs.



-D::

--graph-depth=::

	Set max depth for function graph tracer to follow



--graph-opts::

	List of options allowed to set:

	  nosleep-time - Measure on-CPU time only for function_graph tracer.

	  noirqs       - Ignore functions that happen inside interrupt.

	  verbose      - Show process names, PIDs, timestamps, etc.

	  thresh=<n>   - Setup trace duration threshold in microseconds.

	  depth=<n>    - Set max depth for function graph tracer to follow.



SEE ALSO

--------

tools/perf/builtin-ftrace.c

+2 −3
Original line number Diff line number Diff line
@@ -751,6 +751,7 @@ static int parse_graph_tracer_opts(const struct option *opt, 
		{ .name = "noirqs",		.value_ptr = &ftrace->graph_noirqs },

		{ .name = "verbose",		.value_ptr = &ftrace->graph_verbose },

		{ .name = "thresh",		.value_ptr = &ftrace->graph_thresh },

		{ .name = "depth",		.value_ptr = &ftrace->graph_depth },

		{ .name = NULL, }

	};
@@ -819,10 +820,8 @@ int cmd_ftrace(int argc, const char **argv) 
		     parse_filter_func),

	OPT_CALLBACK('g', "nograph-funcs", &ftrace.nograph_funcs, "func",

		     "Set nograph filter on given functions", parse_filter_func),

	OPT_INTEGER('D', "graph-depth", &ftrace.graph_depth,

		    "Max depth for function graph tracer"),

	OPT_CALLBACK(0, "graph-opts", &ftrace, "options",

		     "graph tracer options, available options: nosleep-time,noirqs,verbose,thresh=<n>",

		     "graph tracer options, available options: nosleep-time,noirqs,verbose,thresh=<n>,depth=<n>",

		     parse_graph_tracer_opts),

	OPT_CALLBACK('m', "buffer-size", &ftrace.percpu_buffer_size, "size",

		     "size of per cpu buffer", parse_buffer_size),

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