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Message-Id: <1411434104-5307-5-git-send-email-namhyung@kernel.org>
Date: Tue, 23 Sep 2014 10:01:43 +0900
From: Namhyung Kim <namhyung@...nel.org>
To: Arnaldo Carvalho de Melo <acme@...nel.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>,
Ingo Molnar <mingo@...nel.org>,
Paul Mackerras <paulus@...ba.org>,
Namhyung Kim <namhyung.kim@....com>,
Namhyung Kim <namhyung@...nel.org>,
LKML <linux-kernel@...r.kernel.org>,
Jiri Olsa <jolsa@...hat.com>, David Ahern <dsahern@...il.com>,
Milian Wolff <mail@...ianw.de>
Subject: [PATCH 4/5] 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: David Ahern <dsahern@...il.com>
Acked-by: Jiri Olsa <jolsa@...hat.com>
Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
tools/perf/util/callchain.c | 109 ++++++++++++++++++++++++++++++++++++--------
tools/perf/util/callchain.h | 1 +
tools/perf/util/config.c | 3 ++
3 files changed, 94 insertions(+), 19 deletions(-)
diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
index ba7297230143..c84d3f8dcb75 100644
--- a/tools/perf/util/callchain.c
+++ b/tools/perf/util/callchain.c
@@ -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;
- /* try to get the min percent */
- else if (!minpcnt_set) {
+ 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 */
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)
diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h
index 8adfbf0bab5c..2a1f5a46543a 100644
--- a/tools/perf/util/callchain.h
+++ b/tools/perf/util/callchain.h
@@ -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)
diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index 9970b8b0190b..953512ed72ba 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -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;
}
--
2.1.0
--
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