UDP sock_wfree optimisations
Status from this message: This series was applied to netdev/net-next.git (master)
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b4 am [email protected]Versions newest first
Patches in v1 All 3 applied
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/3 | sock: dedup sock_def_write_space wmem_alloc checksnet/ | +2 | 0 replies | Applied |
| 2/3 | sock: optimise UDP sock_wfree() refcountingnet/ | +14 | 0 replies | Applied |
| 3/3 | sock: optimise sock_def_write_space barriersnet/ | +25 | 0 replies | Applied |
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Cover letter [PATCH net-next 0/3] UDP sock_wfree optimisations
The series is not UDP specific but that the main beneficiary. 2/3 saves one atomic in sock_wfree() and on top 3/3 removes an extra barrier. Tested with UDP over dummy netdev, 2038491 -> 2099071 req/s (or around +3%).
note: in regards to 1/3, there is a "Should agree with poll..." comment that I don't completely get, and there is no git history to explain it. Though I can't see how it could rely on having the second check without racing with tasks woken by wake_up*().
The series was split from a larger patchset, see
https://lore.kernel.org/netdev/[email protected]/
Pavel Begunkov (3):
sock: dedup sock_def_write_space wmem_alloc checks
sock: optimise UDP sock_wfree() refcounting
sock: optimise sock_def_write_space barriers
net/core/sock.c | 43 ++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 40 insertions(+), 3 deletions(-)
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2.36.0