Messages in this thread | | | From | Ramkumar Ramachandra <> | Date | Wed, 2 Oct 2013 14:50:49 +0530 | Subject | [QUERY] Why does perf-trace need me to be root? |
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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.
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