lkml.org 
[lkml]   [2013]   [Oct]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
Subject[QUERY] Why does perf-trace need me to be root?
Hi,

All the other perf tooling can be used as a normal user. At one point,
I had to touch /proc/sys/kernel/perf_event_paranoid to get me numbers
on a PMU event without a symbolic name, but that's about it.
perf-trace seems to be the exception though:

artagnon|perf-core=:~/src/linux/tools/perf$ perf trace -a -e open
Couldn't read the raw_syscalls tracepoints information!

The responsible codepath is:

if (perf_evlist__add_newtp(evlist, "raw_syscalls", "sys_enter",
trace__sys_enter) ||
perf_evlist__add_newtp(evlist, "raw_syscalls", "sys_exit",
trace__sys_exit)) {

I don't understand much of what's going on, but what can be done to
improve the situation for users?

Thanks.


\
 
 \ /
  Last update: 2013-10-02 11:41    [W:0.101 / U:15.284 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site