[PATCH v2 0/3] perf addr2line: Rework disable_add2line_warn

[PATCH v2 0/3] perf addr2line: Rework disable_add2line_warn

[Thomas Richter]

Introduce configurable addr2line_disable_warn entry in the .perfconfig
file. Clean up addr2line configuration.

V1 --> V2: Update perf-config documentation.

Patch 1:
   Rename disable_add2line_warn to addr2line_disable_warn (with 'r')
   and start name with prefix addr2line_ to make it consistent with
   other addr2line_xxx configuration parameters.
Patch 2:
   Enable symbol_conf::addr2line_disable_warn set via config file.
Patch 3:
   Remove global variable addr2line_timeout_ms and make it a member
   of struct::symbol_conf. Update perf-config documentation.

Thomas Richter (3):
  perf config: Rename symbol_conf::disable_add2line_warn
  perf config: Make symbol_conf::addr2line_disable_warn configurable
  perf addr2line: Remove global variable addr2line_timeout_ms

 tools/perf/Documentation/perf-config.txt |  6 ++++++
 tools/perf/builtin-diff.c                |  4 ++--
 tools/perf/util/addr2line.c              | 20 ++++++++++----------
 tools/perf/util/addr2line.h              |  2 --
 tools/perf/util/block-info.c             |  2 +-
 tools/perf/util/config.c                 |  6 ++++--
 tools/perf/util/libbfd.c                 |  2 +-
 tools/perf/util/symbol_conf.h            |  3 ++-
 8 files changed, 26 insertions(+), 19 deletions(-)

-- 
2.53.0

[PATCH v2 1/3] perf config: Rename symbol_conf::disable_add2line_warn

[Thomas Richter]

Rename member symbol_conf::disable_add2line_warn to
symbol_conf::addr2line_disable_warn to make it consistent with other
addr2line_xxx constants.
No functional change.

Fixes: 257046a36750a ("perf srcline: Fallback between addr2line implementations")
Cc: Ian Rogers <irogers@google.com>
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Reviewed-by: Ian Rogers <irogers@google.com>
---
 tools/perf/builtin-diff.c     |  4 ++--
 tools/perf/util/addr2line.c   | 12 ++++++------
 tools/perf/util/block-info.c  |  2 +-
 tools/perf/util/libbfd.c      |  2 +-
 tools/perf/util/symbol_conf.h |  2 +-
 5 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index 69069926dd0b..35d599d5c9fa 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -1352,7 +1352,7 @@ static int cycles_printf(struct hist_entry *he, struct hist_entry *pair,
 	/*
 	 * Avoid printing the warning "addr2line_init failed for ..."
 	 */
-	symbol_conf.disable_add2line_warn = true;
+	symbol_conf.addr2line_disable_warn = true;
 
 	bi = block_he->block_info;
 
@@ -1986,7 +1986,7 @@ int cmd_diff(int argc, const char **argv)
 
 	if (compute == COMPUTE_STREAM) {
 		symbol_conf.show_branchflag_count = true;
-		symbol_conf.disable_add2line_warn = true;
+		symbol_conf.addr2line_disable_warn = true;
 		callchain_param.mode = CHAIN_FLAT;
 		callchain_param.key = CCKEY_SRCLINE;
 		callchain_param.branch_callstack = 1;
diff --git a/tools/perf/util/addr2line.c b/tools/perf/util/addr2line.c
index 31c0391fffa3..e9f084db0802 100644
--- a/tools/perf/util/addr2line.c
+++ b/tools/perf/util/addr2line.c
@@ -123,7 +123,7 @@ static enum cmd_a2l_style cmd_addr2line_configure(struct child_process *a2l, con
 			lines = 3;
 			pr_debug3("Detected binutils addr2line style\n");
 		} else {
-			if (!symbol_conf.disable_add2line_warn) {
+			if (!symbol_conf.addr2line_disable_warn) {
 				char *output = NULL;
 				size_t output_len;
 
@@ -310,7 +310,7 @@ int cmd__addr2line(const char *dso_name, u64 addr,
 	}
 
 	if (a2l == NULL) {
-		if (!symbol_conf.disable_add2line_warn)
+		if (!symbol_conf.addr2line_disable_warn)
 			pr_warning("%s %s: addr2line_subprocess_init failed\n", __func__, dso_name);
 		goto out;
 	}
@@ -330,7 +330,7 @@ int cmd__addr2line(const char *dso_name, u64 addr,
 	len = snprintf(buf, sizeof(buf), "%016"PRIx64"\n,\n", addr);
 	written = len > 0 ? write(a2l->in, buf, len) : -1;
 	if (written != len) {
-		if (!symbol_conf.disable_add2line_warn)
+		if (!symbol_conf.addr2line_disable_warn)
 			pr_warning("%s %s: could not send request\n", __func__, dso_name);
 		goto out;
 	}
@@ -339,7 +339,7 @@ int cmd__addr2line(const char *dso_name, u64 addr,
 	switch (read_addr2line_record(&io, cmd_a2l_style, dso_name, addr, /*first=*/true,
 				      &record_function, &record_filename, &record_line_nr)) {
 	case -1:
-		if (!symbol_conf.disable_add2line_warn)
+		if (!symbol_conf.addr2line_disable_warn)
 			pr_warning("%s %s: could not read first record\n", __func__, dso_name);
 		goto out;
 	case 0:
@@ -355,7 +355,7 @@ int cmd__addr2line(const char *dso_name, u64 addr,
 					      /*addr=*/1, /*first=*/true,
 					      NULL, NULL, NULL)) {
 		case -1:
-			if (!symbol_conf.disable_add2line_warn)
+			if (!symbol_conf.addr2line_disable_warn)
 				pr_warning("%s %s: could not read sentinel record\n",
 					   __func__, dso_name);
 			break;
@@ -363,7 +363,7 @@ int cmd__addr2line(const char *dso_name, u64 addr,
 			/* The sentinel as expected. */
 			break;
 		default:
-			if (!symbol_conf.disable_add2line_warn)
+			if (!symbol_conf.addr2line_disable_warn)
 				pr_warning("%s %s: unexpected record instead of sentinel",
 					   __func__, dso_name);
 			break;
diff --git a/tools/perf/util/block-info.c b/tools/perf/util/block-info.c
index 649392bee7ed..8d3a9a661f26 100644
--- a/tools/perf/util/block-info.c
+++ b/tools/perf/util/block-info.c
@@ -303,7 +303,7 @@ static int block_range_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
 	char buf[128];
 	char *start_line, *end_line;
 
-	symbol_conf.disable_add2line_warn = true;
+	symbol_conf.addr2line_disable_warn = true;
 
 	start_line = map__srcline(he->ms.map, bi->sym->start + bi->start,
 				  he->ms.sym);
diff --git a/tools/perf/util/libbfd.c b/tools/perf/util/libbfd.c
index 63ea3fb53e77..c1c12308cc12 100644
--- a/tools/perf/util/libbfd.c
+++ b/tools/perf/util/libbfd.c
@@ -233,7 +233,7 @@ int libbfd__addr2line(const char *dso_name, u64 addr,
 	}
 
 	if (a2l == NULL) {
-		if (!symbol_conf.disable_add2line_warn)
+		if (!symbol_conf.addr2line_disable_warn)
 			pr_warning("addr2line_init failed for %s\n", dso_name);
 		return 0;
 	}
diff --git a/tools/perf/util/symbol_conf.h b/tools/perf/util/symbol_conf.h
index ac1b444a8fd8..21a1f096d4f0 100644
--- a/tools/perf/util/symbol_conf.h
+++ b/tools/perf/util/symbol_conf.h
@@ -51,7 +51,7 @@ struct symbol_conf {
 			report_block,
 			report_individual_block,
 			inline_name,
-			disable_add2line_warn,
+			addr2line_disable_warn,
 			no_buildid_mmap2,
 			guest_code,
 			lazy_load_kernel_maps,
-- 
2.53.0

Re: [PATCH v2 1/3] perf config: Rename symbol_conf::disable_add2line_warn

[Namhyung Kim]

On Thu, Apr 02, 2026 at 10:01:57AM +0200, Thomas Richter wrote:
> Rename member symbol_conf::disable_add2line_warn to
> symbol_conf::addr2line_disable_warn to make it consistent with other
> addr2line_xxx constants.
> No functional change.
> 
> Fixes: 257046a36750a ("perf srcline: Fallback between addr2line implementations")

I'm not sure if we want it for typo fixes.

Thanks,
Namhyung


> Cc: Ian Rogers <irogers@google.com>
> Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
> Reviewed-by: Ian Rogers <irogers@google.com>
> ---
>  tools/perf/builtin-diff.c     |  4 ++--
>  tools/perf/util/addr2line.c   | 12 ++++++------
>  tools/perf/util/block-info.c  |  2 +-
>  tools/perf/util/libbfd.c      |  2 +-
>  tools/perf/util/symbol_conf.h |  2 +-
>  5 files changed, 11 insertions(+), 11 deletions(-)
> 
> diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
> index 69069926dd0b..35d599d5c9fa 100644
> --- a/tools/perf/builtin-diff.c
> +++ b/tools/perf/builtin-diff.c
> @@ -1352,7 +1352,7 @@ static int cycles_printf(struct hist_entry *he, struct hist_entry *pair,
>  	/*
>  	 * Avoid printing the warning "addr2line_init failed for ..."
>  	 */
> -	symbol_conf.disable_add2line_warn = true;
> +	symbol_conf.addr2line_disable_warn = true;
>  
>  	bi = block_he->block_info;
>  
> @@ -1986,7 +1986,7 @@ int cmd_diff(int argc, const char **argv)
>  
>  	if (compute == COMPUTE_STREAM) {
>  		symbol_conf.show_branchflag_count = true;
> -		symbol_conf.disable_add2line_warn = true;
> +		symbol_conf.addr2line_disable_warn = true;
>  		callchain_param.mode = CHAIN_FLAT;
>  		callchain_param.key = CCKEY_SRCLINE;
>  		callchain_param.branch_callstack = 1;
> diff --git a/tools/perf/util/addr2line.c b/tools/perf/util/addr2line.c
> index 31c0391fffa3..e9f084db0802 100644
> --- a/tools/perf/util/addr2line.c
> +++ b/tools/perf/util/addr2line.c
> @@ -123,7 +123,7 @@ static enum cmd_a2l_style cmd_addr2line_configure(struct child_process *a2l, con
>  			lines = 3;
>  			pr_debug3("Detected binutils addr2line style\n");
>  		} else {
> -			if (!symbol_conf.disable_add2line_warn) {
> +			if (!symbol_conf.addr2line_disable_warn) {
>  				char *output = NULL;
>  				size_t output_len;
>  
> @@ -310,7 +310,7 @@ int cmd__addr2line(const char *dso_name, u64 addr,
>  	}
>  
>  	if (a2l == NULL) {
> -		if (!symbol_conf.disable_add2line_warn)
> +		if (!symbol_conf.addr2line_disable_warn)
>  			pr_warning("%s %s: addr2line_subprocess_init failed\n", __func__, dso_name);
>  		goto out;
>  	}
> @@ -330,7 +330,7 @@ int cmd__addr2line(const char *dso_name, u64 addr,
>  	len = snprintf(buf, sizeof(buf), "%016"PRIx64"\n,\n", addr);
>  	written = len > 0 ? write(a2l->in, buf, len) : -1;
>  	if (written != len) {
> -		if (!symbol_conf.disable_add2line_warn)
> +		if (!symbol_conf.addr2line_disable_warn)
>  			pr_warning("%s %s: could not send request\n", __func__, dso_name);
>  		goto out;
>  	}
> @@ -339,7 +339,7 @@ int cmd__addr2line(const char *dso_name, u64 addr,
>  	switch (read_addr2line_record(&io, cmd_a2l_style, dso_name, addr, /*first=*/true,
>  				      &record_function, &record_filename, &record_line_nr)) {
>  	case -1:
> -		if (!symbol_conf.disable_add2line_warn)
> +		if (!symbol_conf.addr2line_disable_warn)
>  			pr_warning("%s %s: could not read first record\n", __func__, dso_name);
>  		goto out;
>  	case 0:
> @@ -355,7 +355,7 @@ int cmd__addr2line(const char *dso_name, u64 addr,
>  					      /*addr=*/1, /*first=*/true,
>  					      NULL, NULL, NULL)) {
>  		case -1:
> -			if (!symbol_conf.disable_add2line_warn)
> +			if (!symbol_conf.addr2line_disable_warn)
>  				pr_warning("%s %s: could not read sentinel record\n",
>  					   __func__, dso_name);
>  			break;
> @@ -363,7 +363,7 @@ int cmd__addr2line(const char *dso_name, u64 addr,
>  			/* The sentinel as expected. */
>  			break;
>  		default:
> -			if (!symbol_conf.disable_add2line_warn)
> +			if (!symbol_conf.addr2line_disable_warn)
>  				pr_warning("%s %s: unexpected record instead of sentinel",
>  					   __func__, dso_name);
>  			break;
> diff --git a/tools/perf/util/block-info.c b/tools/perf/util/block-info.c
> index 649392bee7ed..8d3a9a661f26 100644
> --- a/tools/perf/util/block-info.c
> +++ b/tools/perf/util/block-info.c
> @@ -303,7 +303,7 @@ static int block_range_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
>  	char buf[128];
>  	char *start_line, *end_line;
>  
> -	symbol_conf.disable_add2line_warn = true;
> +	symbol_conf.addr2line_disable_warn = true;
>  
>  	start_line = map__srcline(he->ms.map, bi->sym->start + bi->start,
>  				  he->ms.sym);
> diff --git a/tools/perf/util/libbfd.c b/tools/perf/util/libbfd.c
> index 63ea3fb53e77..c1c12308cc12 100644
> --- a/tools/perf/util/libbfd.c
> +++ b/tools/perf/util/libbfd.c
> @@ -233,7 +233,7 @@ int libbfd__addr2line(const char *dso_name, u64 addr,
>  	}
>  
>  	if (a2l == NULL) {
> -		if (!symbol_conf.disable_add2line_warn)
> +		if (!symbol_conf.addr2line_disable_warn)
>  			pr_warning("addr2line_init failed for %s\n", dso_name);
>  		return 0;
>  	}
> diff --git a/tools/perf/util/symbol_conf.h b/tools/perf/util/symbol_conf.h
> index ac1b444a8fd8..21a1f096d4f0 100644
> --- a/tools/perf/util/symbol_conf.h
> +++ b/tools/perf/util/symbol_conf.h
> @@ -51,7 +51,7 @@ struct symbol_conf {
>  			report_block,
>  			report_individual_block,
>  			inline_name,
> -			disable_add2line_warn,
> +			addr2line_disable_warn,
>  			no_buildid_mmap2,
>  			guest_code,
>  			lazy_load_kernel_maps,
> -- 
> 2.53.0
> 

[PATCH v2 2/3] perf config: Make symbol_conf::addr2line_disable_warn configurable

[Thomas Richter]

Make symbol_conf::addr2line_disable_warn configurable by reading
the perfconfig file. Use section core and addr2line-disable-warn =
value.

Example:
 # perf config -l
 core.addr2line-timeout=500
 core.addr2line-disable-warn=1
 #

Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Reviewed-by: Ian Rogers <irogers@google.com>
Cc: Ian Rogers <irogers@google.com>
---
 tools/perf/util/config.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index 0452fbc6c085..31541e03aab7 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -461,6 +461,9 @@ static int perf_default_core_config(const char *var, const char *value)
 	if (!strcmp(var, "core.addr2line-timeout"))
 		addr2line_timeout_ms = strtoul(value, NULL, 10);
 
+	if (!strcmp(var, "core.addr2line-disable-warn"))
+		symbol_conf.addr2line_disable_warn = strtoul(value, NULL, 10);
+
 	/* Add other config variables here. */
 	return 0;
 }
-- 
2.53.0

Re: [PATCH v2 2/3] perf config: Make symbol_conf::addr2line_disable_warn configurable

[Namhyung Kim]

On Thu, Apr 02, 2026 at 10:01:58AM +0200, Thomas Richter wrote:
> Make symbol_conf::addr2line_disable_warn configurable by reading
> the perfconfig file. Use section core and addr2line-disable-warn =
> value.

I think it's better to have it under "report" or something.  But it
seems we already have one in the "core" section.

> 
> Example:
>  # perf config -l
>  core.addr2line-timeout=500
>  core.addr2line-disable-warn=1
>  #
> 
> Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
> Reviewed-by: Ian Rogers <irogers@google.com>
> Cc: Ian Rogers <irogers@google.com>
> ---
>  tools/perf/util/config.c | 3 +++
>  1 file changed, 3 insertions(+)

It'd be great if you add documentation in the same change.

> 
> diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
> index 0452fbc6c085..31541e03aab7 100644
> --- a/tools/perf/util/config.c
> +++ b/tools/perf/util/config.c
> @@ -461,6 +461,9 @@ static int perf_default_core_config(const char *var, const char *value)
>  	if (!strcmp(var, "core.addr2line-timeout"))
>  		addr2line_timeout_ms = strtoul(value, NULL, 10);
>  
> +	if (!strcmp(var, "core.addr2line-disable-warn"))
> +		symbol_conf.addr2line_disable_warn = strtoul(value, NULL, 10);

As it's boolean, better to use perf_config_bool() instead of strtoul()
so that it can accept "true" or "yes" as well as numbers.

Thanks,
Namhyung

> +
>  	/* Add other config variables here. */
>  	return 0;
>  }
> -- 
> 2.53.0
> 

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

[Thomas Richter]

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

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

[Namhyung Kim]

On Thu, Apr 02, 2026 at 10:01:59AM +0200, Thomas Richter wrote:
> 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")

I don't think this fixes anything.


> 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.

It should be 5000ms or 5s.


>  	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;

As I said before, you can put it in the util/symbol.c.

Thanks,
Namhyung

> +
>  	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
>