[PATCH v2 3/3] perf addr2line: Remove global variable addr2line_timeout_ms

[Thomas Richter <tmricht@linux.ibm.com>]

Remove global variable addr2line_timeout_ms and add is as member
to symbol_conf structure. Update the documentation for perf config
file.

Fixes: 257046a36750a ("perf srcline: Fallback between addr2line implementations")
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Reviewed-by: Ian Rogers <irogers@google.com>
Cc: Ian Rogers <irogers@google.com>
---
 tools/perf/Documentation/perf-config.txt | 6 ++++++
 tools/perf/util/addr2line.c              | 8 ++++----
 tools/perf/util/addr2line.h              | 2 --
 tools/perf/util/config.c                 | 3 +--
 tools/perf/util/symbol_conf.h            | 1 +
 5 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt
index 642d1c490d9e..efc15b6db7e2 100644
--- a/tools/perf/Documentation/perf-config.txt
+++ b/tools/perf/Documentation/perf-config.txt
@@ -206,6 +206,12 @@ colors.*::
 		Default values are 'white', 'blue'.
 
 core.*::
+	addr2line-disable-warn::
+		When set to 1 disable all warnings from 'addr2line' output.
+		Default setting is 0 to show these warnings.
+	addr2line-timeout::
+		Sets a timeout (in milliseconds) for parsing 'addr2line'
+		output.  The default timeout is 500ms.
 	core.proc-map-timeout::
 		Sets a timeout (in milliseconds) for parsing /proc/<pid>/maps files.
 		Can be overridden by the --proc-map-timeout option on supported
diff --git a/tools/perf/util/addr2line.c b/tools/perf/util/addr2line.c
index e9f084db0802..1b7f66ece570 100644
--- a/tools/perf/util/addr2line.c
+++ b/tools/perf/util/addr2line.c
@@ -18,9 +18,6 @@
 
 #define MAX_INLINE_NEST 1024
 
-/* If addr2line doesn't return data for 5 seconds then timeout. */
-int addr2line_timeout_ms = 5 * 1000;
-
 static int filename_split(char *filename, unsigned int *line_nr)
 {
 	char *sep;
@@ -87,6 +84,9 @@ static struct child_process *addr2line_subprocess_init(const char *addr2line_pat
 		return NULL;
 	}
 
+	if (!symbol_conf.addr2line_timeout_ms)
+		symbol_conf.addr2line_timeout_ms = 5 * 1000;
+
 	return a2l;
 }
 
@@ -335,7 +335,7 @@ int cmd__addr2line(const char *dso_name, u64 addr,
 		goto out;
 	}
 	io__init(&io, a2l->out, buf, sizeof(buf));
-	io.timeout_ms = addr2line_timeout_ms;
+	io.timeout_ms = symbol_conf.addr2line_timeout_ms;
 	switch (read_addr2line_record(&io, cmd_a2l_style, dso_name, addr, /*first=*/true,
 				      &record_function, &record_filename, &record_line_nr)) {
 	case -1:
diff --git a/tools/perf/util/addr2line.h b/tools/perf/util/addr2line.h
index d35a47ba8dab..75989a92f16b 100644
--- a/tools/perf/util/addr2line.h
+++ b/tools/perf/util/addr2line.h
@@ -8,8 +8,6 @@ struct dso;
 struct inline_node;
 struct symbol;
 
-extern int addr2line_timeout_ms;
-
 int cmd__addr2line(const char *dso_name, u64 addr,
 		   char **file, unsigned int *line_nr,
 		   struct dso *dso,
diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index 31541e03aab7..573b3a3f5999 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -19,7 +19,6 @@
 #include "util/hist.h"  /* perf_hist_config */
 #include "util/stat.h"  /* perf_stat__set_big_num */
 #include "util/evsel.h"  /* evsel__hw_names, evsel__use_bpf_counters */
-#include "util/addr2line.h"  /* addr2line_timeout_ms */
 #include "srcline.h"
 #include "build-id.h"
 #include "debug.h"
@@ -459,7 +458,7 @@ static int perf_default_core_config(const char *var, const char *value)
 		proc_map_timeout = strtoul(value, NULL, 10);
 
 	if (!strcmp(var, "core.addr2line-timeout"))
-		addr2line_timeout_ms = strtoul(value, NULL, 10);
+		symbol_conf.addr2line_timeout_ms = strtoul(value, NULL, 10);
 
 	if (!strcmp(var, "core.addr2line-disable-warn"))
 		symbol_conf.addr2line_disable_warn = strtoul(value, NULL, 10);
diff --git a/tools/perf/util/symbol_conf.h b/tools/perf/util/symbol_conf.h
index 21a1f096d4f0..6cd454d7c98e 100644
--- a/tools/perf/util/symbol_conf.h
+++ b/tools/perf/util/symbol_conf.h
@@ -80,6 +80,7 @@ struct symbol_conf {
 			*bt_stop_list_str;
 	const char		*addr2line_path;
 	enum a2l_style	addr2line_style[MAX_A2L_STYLE];
+	int             addr2line_timeout_ms;
 	unsigned long	time_quantum;
        struct strlist	*dso_list,
 			*comm_list,
-- 
2.53.0