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| author | Eric Dumazet <[email protected]> | 2021-11-24 12:24:45 -0800 |
|---|---|---|
| committer | Jakub Kicinski <[email protected]> | 2021-11-25 21:03:31 -0800 |
| commit | 0bd28476f6363c7ccc841fe6a0ab0dd1fdb822f6 (patch) | |
| tree | 8d1bfa9f18c5d8082794f804dea59d21312a88c4 /tools/perf/scripts/python/netdev-times.py | |
| parent | 703319094c9c2bf34f65d3496ccb350149fdd14b (diff) | |
gro: optimize skb_gro_postpull_rcsum()
We can leverage third argument to csum_partial():
X = csum_sub(X, csum_partial(start, len, 0));
-->
X = csum_add(X, ~csum_partial(start, len, 0));
-->
X = ~csum_partial(start, len, ~X);
This removes one add/adc pair and its dependency against the carry flag.
Signed-off-by: Eric Dumazet <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/netdev-times.py')
0 files changed, 0 insertions, 0 deletions