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| author | Tariq Toukan <[email protected]> | 2017-06-15 11:35:39 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2017-06-16 02:53:23 +0000 |
| commit | 9573e0d39ff8d7d1e0bcc10e23d18b9cbc4ca14e (patch) | |
| tree | 8603ad2c32933bc751aa2dd322aa48cd4724fdea /drivers/net/dsa/dsa_loop.c | |
| parent | net/mlx4_en: Increase default TX ring size (diff) | |
| download | kernel-9573e0d39ff8d7d1e0bcc10e23d18b9cbc4ca14e.tar.gz kernel-9573e0d39ff8d7d1e0bcc10e23d18b9cbc4ca14e.zip | |
net/mlx4_en: Replace TXBB_SIZE multiplications with shift operations
Define LOG_TXBB_SIZE, log of TXBB_SIZE, and use it with a shift
operation instead of a multiplication with TXBB_SIZE.
Operations are equivalent as TXBB_SIZE is a power of two.
Performance tests:
Tested on ConnectX3Pro, Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz
Gain is too small to be measurable, no degradation sensed.
Results are similar for IPv4 and IPv6.
Signed-off-by: Tariq Toukan <[email protected]>
Reviewed-by: Saeed Mahameed <[email protected]>
Cc: [email protected]
Cc: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'drivers/net/dsa/dsa_loop.c')
0 files changed, 0 insertions, 0 deletions