RE: [PATCH V4] POWER: perf_event: Skip updating kernel counters if register value shrinks

From: David Laight
Date: Wed Apr 27 2011 - 08:35:53 EST


> But it isn't, and it doesn't have trouble with 2^32 - 1.

what about:
prev = 0x00000001
val = 0xffffffff

David


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