[PATCH 0/3] perf_events and hw_breakpoints fix and cleanup

[Matt Helsley]

Fixes a bug in the way that hardward breakpoints pass around [v]pids.

The last two patches move the pid resolution closer to the syscall
and avoid passing pids entirely so that the perf event code does not
need to worry about being in the wrong pid namespace when kernel
counters are created.

NOTE: Applies to -tip perf/core. Compile-tested only at the moment.