Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit dc4552bf authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo
Browse files

perf tools: Add dump_stack function 

To help in debugging the tools, provides functionality roughly similar
to the function with the same name in the kernel.

Copied from glibc backtrace function man page.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-6nw2sak21bqy8h1m2syyo816@git.kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent a7cb8863

tools/perf/util/util.c

+19 −0
Original line number Diff line number Diff line 
#include "../perf.h"

#include "util.h"

#include <sys/mman.h>

#include <execinfo.h>

#include <stdio.h>

#include <stdlib.h>



/*

 * XXX We need to find a better place for these things...
@@ -158,3 +161,19 @@ size_t hex_width(u64 v) 


	return n;

}



/* Obtain a backtrace and print it to stdout. */

void dump_stack(void)

{

	void *array[16];

	size_t size = backtrace(array, ARRAY_SIZE(array));

	char **strings = backtrace_symbols(array, size);

	size_t i;



	printf("Obtained %zd stack frames.\n", size);



	for (i = 0; i < size; i++)

		printf("%s\n", strings[i]);



	free(strings);

}

tools/perf/util/util.h

+2 −0
Original line number Diff line number Diff line
@@ -266,4 +266,6 @@ size_t hex_width(u64 v); 


char *rtrim(char *s);



void dump_stack(void);



#endif