Getting no perf_event_open stats

[ferrreo]

Iam getting no perf_event_open stats from poop but perf stat is working just fine.

I have tracked down a fix but I am not happy with it as it goes against the syscall docs.

Changing:

std.posix.perf_event_open(&attr, 0, -1, perf_fds[0], PERF.FLAG.FD_CLOEXEC)

to

std.posix.perf_event_open(&attr, 0, -1, -1, PERF.FLAG.FD_CLOEXEC)

Makes it work again.

I am on kernel 6.12.1 if it helps to figure out this weirdness.