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| author | imp <imp@FreeBSD.org> | 2008-12-07 18:32:09 +0000 |
|---|---|---|
| committer | imp <imp@FreeBSD.org> | 2008-12-07 18:32:09 +0000 |
| commit | 09990939a46c3539c1bb818b4bff57a158233de6 (patch) | |
| tree | 83326ac75581ce5edea7b4da7722aa9ceb81c9d8 /sys/dev/sio/sio.c | |
| parent | 868630039f3335e1079202ef1795b0391612c7e2 (diff) | |
| download | FreeBSD-src-09990939a46c3539c1bb818b4bff57a158233de6.zip FreeBSD-src-09990939a46c3539c1bb818b4bff57a158233de6.tar.gz | |
Use atomic_add_int rather than a simple ++ to ensure no cache races if
the power interrupt and init code waiting for the interrupt are
running on different CPUs. I haven't seen this make any real
difference, but I've also had some reports of odd behavior I can't
otherwise explain. It is an infrequent operation, and certainly
wouldn't hurt.
Diffstat (limited to 'sys/dev/sio/sio.c')
0 files changed, 0 insertions, 0 deletions
