tree 0804c8c4f28d4ae152d5e9205ce5a958f0d26b79
parent 2f0993e0fb663c49e4d1e02654f6203246be4817
author Frederic Weisbecker <fweisbec@gmail.com> 1260002671 +0100
committer Frederic Weisbecker <fweisbec@gmail.com> 1260084438 +0100

hw-breakpoints: Use overflow handler instead of the event callback

struct perf_event::event callback was called when a breakpoint
triggers. But this is a rather opaque callback, pretty
tied-only to the breakpoint API and not really integrated into perf
as it triggers even when we don't overflow.

We prefer to use overflow_handler() as it fits into the perf events
rules, being called only when we overflow.

Reported-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: "K. Prasad" <prasad@linux.vnet.ibm.com>