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| author | Joel Becker <joel.becker@oracle.com> | 2008-12-15 18:24:33 -0800 |
|---|---|---|
| committer | Mark Fasheh <mfasheh@suse.com> | 2009-01-05 08:40:35 -0800 |
| commit | 7bb458a58588f397068e4166c615e9fcc7480c16 (patch) | |
| tree | a5d330c12f983837097f775e2d7c6c4d85fb9acd /arch/arm/mach-ixp23xx | |
| parent | e798b3f8a920c82a8e556dd54df97f0d3d0f9144 (diff) | |
ocfs2: Another hamming code optimization.
In the calc_code_bit() function, we must find all powers of two beneath
the code bit number, *after* it's shifted by those powers of two. This
requires a loop to see where it ends up.
We can optimize it by starting at its most significant bit. This shaves
32% off the time, for a total of 67.6% shaved off of the original, naive
implementation.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'arch/arm/mach-ixp23xx')
0 files changed, 0 insertions, 0 deletions