tree b37bda884e0740489269da5ddc3401ffa61f076e
parent b6276f353bf490add62dcf7db0ebd75baa3e1a37
author Peter Zijlstra <a.p.zijlstra@chello.nl> 1239011104 +0200
committer Ingo Molnar <mingo@elte.hu> 1239094136 +0200

perf_counter: theres more to overflow than writing events

Prepare for more generic overflow handling. The new perf_counter_overflow()
method will handle the generic bits of the counter overflow, and can return
a !0 return value, in which case the counter should be (soft) disabled, so
that it won't count until it's properly disabled.

XXX: do powerpc and swcounter

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
LKML-Reference: <20090406094517.812109629@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>