Re: [PATCH 1/3] perf events: fix WARN_ON_ONCE for 64-bit raw data, SW events
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From: Peter Zijlstra <peterz@infradead.org>
Date: 2011-02-18 10:59:15
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On Thu, 2011-02-17 at 22:53 -0700, David Ahern wrote:
This check does not work out for 64-bit counter:
sizeof(u32) + sizeof(u64) = 4 + 8 = 12
which does not pass the WARN_ON_ONCE test. I'm guessing (hoping
really) that the intent is that the size of the raw data is a
multiple of 4 bytes, not 8.No the data must come in 8bytes strides.