Commit 2b9240ca authored by Namhyung Kim's avatar Namhyung Kim Committed by Arnaldo Carvalho de Melo
Browse files

perf tools: Introduce perf_callchain_config() 



This patch adds support for following config options to ~/.perfconfig file.

  [call-graph]
    record-mode = dwarf
    dump-size = 8192
    print-type = fractal
    order = callee
    threshold = 0.5
    print-limit = 128
    sort-key = function

Reviewed-by: default avatarDavid Ahern <dsahern@gmail.com>
Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
Acked-by: default avatarJiri Olsa <jolsa@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Milian Wolff <mail@milianw.de>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1411434104-5307-5-git-send-email-namhyung@kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent f7f084f4

tools/perf/util/callchain.c

+90 −19
Original line number Diff line number Diff line
@@ -109,6 +109,49 @@ int parse_callchain_record_opt(const char *arg) 
	return ret;

}



static int parse_callchain_mode(const char *value)

{

	if (!strncmp(value, "graph", strlen(value))) {

		callchain_param.mode = CHAIN_GRAPH_ABS;

		return 0;

	}

	if (!strncmp(value, "flat", strlen(value))) {

		callchain_param.mode = CHAIN_FLAT;

		return 0;

	}

	if (!strncmp(value, "fractal", strlen(value))) {

		callchain_param.mode = CHAIN_GRAPH_REL;

		return 0;

	}

	return -1;

}



static int parse_callchain_order(const char *value)

{

	if (!strncmp(value, "caller", strlen(value))) {

		callchain_param.order = ORDER_CALLER;

		return 0;

	}

	if (!strncmp(value, "callee", strlen(value))) {

		callchain_param.order = ORDER_CALLEE;

		return 0;

	}

	return -1;

}



static int parse_callchain_sort_key(const char *value)

{

	if (!strncmp(value, "function", strlen(value))) {

		callchain_param.key = CCKEY_FUNCTION;

		return 0;

	}

	if (!strncmp(value, "address", strlen(value))) {

		callchain_param.key = CCKEY_ADDRESS;

		return 0;

	}

	return -1;

}



int

parse_callchain_report_opt(const char *arg)

{
@@ -128,25 +171,12 @@ parse_callchain_report_opt(const char *arg) 
			return 0;

		}



		/* try to get the output mode */

		if (!strncmp(tok, "graph", strlen(tok)))

			callchain_param.mode = CHAIN_GRAPH_ABS;

		else if (!strncmp(tok, "flat", strlen(tok)))

			callchain_param.mode = CHAIN_FLAT;

		else if (!strncmp(tok, "fractal", strlen(tok)))

			callchain_param.mode = CHAIN_GRAPH_REL;

		/* try to get the call chain order */

		else if (!strncmp(tok, "caller", strlen(tok)))

			callchain_param.order = ORDER_CALLER;

		else if (!strncmp(tok, "callee", strlen(tok)))

			callchain_param.order = ORDER_CALLEE;

		/* try to get the sort key */

		else if (!strncmp(tok, "function", strlen(tok)))

			callchain_param.key = CCKEY_FUNCTION;

		else if (!strncmp(tok, "address", strlen(tok)))

			callchain_param.key = CCKEY_ADDRESS;

		if (!parse_callchain_mode(tok) ||

		    !parse_callchain_order(tok) ||

		    !parse_callchain_sort_key(tok)) {

			/* parsing ok - move on to the next */

		} else if (!minpcnt_set) {

			/* try to get the min percent */

		else if (!minpcnt_set) {

			callchain_param.min_percent = strtod(tok, &endptr);

			if (tok == endptr)

				return -1;
@@ -168,6 +198,47 @@ parse_callchain_report_opt(const char *arg) 
	return 0;

}



int perf_callchain_config(const char *var, const char *value)

{

	char *endptr;



	if (prefixcmp(var, "call-graph."))

		return 0;

	var += sizeof("call-graph.") - 1;



	if (!strcmp(var, "record-mode"))

		return parse_callchain_record_opt(value);

#ifdef HAVE_DWARF_UNWIND_SUPPORT

	if (!strcmp(var, "dump-size")) {

		unsigned long size = 0;

		int ret;



		ret = get_stack_size(value, &size);

		callchain_param.dump_size = size;



		return ret;

	}

#endif

	if (!strcmp(var, "print-type"))

		return parse_callchain_mode(value);

	if (!strcmp(var, "order"))

		return parse_callchain_order(value);

	if (!strcmp(var, "sort-key"))

		return parse_callchain_sort_key(value);

	if (!strcmp(var, "threshold")) {

		callchain_param.min_percent = strtod(value, &endptr);

		if (value == endptr)

			return -1;

	}

	if (!strcmp(var, "print-limit")) {

		callchain_param.print_limit = strtod(value, &endptr);

		if (value == endptr)

			return -1;

	}



	return 0;

}



static void

rb_insert_callchain(struct rb_root *root, struct callchain_node *chain,

		    enum chain_mode mode)

tools/perf/util/callchain.h

+1 −0
Original line number Diff line number Diff line
@@ -170,6 +170,7 @@ int fill_callchain_info(struct addr_location *al, struct callchain_cursor_node * 
extern const char record_callchain_help[];

int parse_callchain_record_opt(const char *arg);

int parse_callchain_report_opt(const char *arg);

int perf_callchain_config(const char *var, const char *value);



static inline void callchain_cursor_snapshot(struct callchain_cursor *dest,

					     struct callchain_cursor *src)

tools/perf/util/config.c

+3 −0
Original line number Diff line number Diff line
@@ -396,6 +396,9 @@ int perf_default_config(const char *var, const char *value, 
	if (!prefixcmp(var, "ui."))

		return perf_ui_config(var, value);



	if (!prefixcmp(var, "call-graph."))

		return perf_callchain_config(var, value);



	/* Add other config variables here. */

	return 0;

}

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