diff options
author | Ingo Molnar <mingo@kernel.org> | 2013-04-24 09:26:30 +0200 |
---|---|---|
committer | Ingo Molnar <mingo@kernel.org> | 2013-04-26 09:31:41 +0200 |
commit | 5ac2b5c2721501a8f5c5e1cd4116cbc31ace6886 (patch) | |
tree | 7edd3d6f36b723c717b7cda85e92f4d4111133a8 /kernel | |
parent | 94f4db3590893c600506105b88dab581c7f6f5c8 (diff) |
perf/x86/intel/P4: Robistify P4 PMU types
Linus found, while extending integer type extension checks in the
sparse static code checker, various fragile patterns of mixed
signed/unsigned 64-bit/32-bit integer use in perf_events_p4.c.
The relevant hardware register ABI is 64 bit wide on 32-bit
kernels as well, so clean it all up a bit, remove unnecessary
casts, and make sure we use 64-bit unsigned integers in these
places.
[ Unfortunately this patch was not tested on real P4 hardware,
those are pretty rare already. If this patch causes any
problems on P4 hardware then please holler ... ]
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: David Miller <davem@davemloft.net>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20130424072630.GB1780@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions