FEX-Emu/linux
1
0
Fork 0
mirror of https://github.com/FEX-Emu/linux.git synced 2025-01-06 17:43:43 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

perf utils: Readlink /proc/self/exe to find the perf binary

Browse Source 
Simplification: it is easier to open /proc/self/exe than /proc/$pid/exe.

Signed-off-by: Tommi Rantala <tommi.t.rantala@nokia.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20170322130624.21881-7-tommi.t.rantala@nokia.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Tommi Rantala 2017-03-22 15:06:24 +02:00 committed by Arnaldo Carvalho de Melo
parent d4b364df5f
commit 55f77128e7
1 changed files with 2 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
tools/perf/util/header.c
View File

@ -370,15 +370,11 @@ static int write_cmdline(int fd, struct perf_header *h __maybe_unused,
struct perf_evlist *evlist __maybe_unused)
{
char buf[MAXPATHLEN];
char proc[32];
u32 n;
int i, ret;
/*
* actual atual path to perf binary
*/
sprintf(proc, "/proc/%d/exe", getpid());
ret = readlink(proc, buf, sizeof(buf) - 1);
/* actual path to perf binary */
ret = readlink("/proc/self/exe", buf, sizeof(buf) - 1);
if (ret <= 0)
return -1;