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| author | Eric Dumazet <edumazet@google.com> | 2026-03-07 20:07:15 +0000 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-03-07 15:03:14 -0800 |
| commit | 1954c4f012206147c34acda8da04f827aa7d3ee3 (patch) | |
| tree | 49d682b2b3865d8758fa30926ed55d839e97f75d /rust/kernel/alloc/allocator | |
| parent | 3b5d535c635cbf88dbb63231cbae265b22e6a5f5 (diff) | |
| download | linux-1954c4f012206147c34acda8da04f827aa7d3ee3.tar.gz linux-1954c4f012206147c34acda8da04f827aa7d3ee3.zip | |
eventpoll: Convert epoll_put_uevent() to scoped user access
Saves two function calls, and one stac/clac pair.
stac/clac is rather expensive on older cpus like Zen 2.
A synthetic network stress test gives a ~1.5% increase of pps
on AMD Zen 2.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Kuniyuki Iwashima <kuniyu@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'rust/kernel/alloc/allocator')
0 files changed, 0 insertions, 0 deletions