Question about the perf_event support

Created by: mcolmant

Hi,

First of all, I would like to thank you for this awesome library and for your reactivity! I have one question regarding the perf_event support. I have a specific need regarding this support. As you may know, the file descriptor are opened with the perf_event_open function while using this interface.

int perf_event_open(struct perf_event_attr *attr,
                           pid_t pid, int cpu, int group_fd,
                           unsigned long flags);

I already looked into the code and this function is wrapped inside perf_*_setup functions. What I would like to do is to adapt the code for allowing to use of the pid and flags parameters. The main modification will be located to the perfmon_setupCountersThread, but will lead to a lot of impacts. Maybe you will have some advices to limit this impact.

I already wrote something, are you interested by such feature?