tree 1a9a6f4a7fd759fd7a5eeaffe475dca678a2651c
parent 966ee4d6b887c14159043ac80b8c3661d2bbe5e2
author Arjan van de Ven <arjan@linux.intel.com> 1248155666 -0700
committer Peter Zijlstra <a.p.zijlstra@chello.nl> 1248278757 +0200

perf: avoid structure size confusion by using a fixed size

for some reason, this structure gets compiled as 36 bytes in some files
(the ones that alloacte it) but 40 bytes in others (the ones that use it).
The cause is an off_t type that gets a different size in different
compilation units for some yet-to-be-explained reason.

But the effect is disasterous; the size/offset members of the struct
are at different offsets, and result in mostly complete garbage.
The parser in perf is so robust that this all gets hidden, and after
skipping an certain amount of samples, it recovers.... so this bug
is not normally noticed.

.... except when you want every sample to be exact.

Fix this by just using an explicitly sized type.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <4A655917.9080504@linux.intel.com>