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| author | Andy Grover <andy.grover@oracle.com> | 2009-04-01 08:20:20 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-04-02 00:52:22 -0700 |
| commit | 8cbd9606a6367c221a7bbcc47f3ab1a8c31b6437 (patch) | |
| tree | 9ff2adf88be32383fd59dc133f1cd6670b9ee815 /crypto/internal.h | |
| parent | 745cbccac3fe8cead529a1b3358e1e86a1505bfa (diff) | |
| download | blackbird-op-linux-8cbd9606a6367c221a7bbcc47f3ab1a8c31b6437.tar.gz blackbird-op-linux-8cbd9606a6367c221a7bbcc47f3ab1a8c31b6437.zip | |
RDS: Use spinlock to protect 64b value update on 32b archs
We have a 64bit value that needs to be set atomically.
This is easy and quick on all 64bit archs, and can also be done
on x86/32 with set_64bit() (uses cmpxchg8b). However other
32b archs don't have this.
I actually changed this to the current state in preparation for
mainline because the old way (using a spinlock on 32b) resulted in
unsightly #ifdefs in the code. But obviously, being correct takes
precedence.
Signed-off-by: Andy Grover <andy.grover@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'crypto/internal.h')
0 files changed, 0 insertions, 0 deletions
