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io_uring/napi: add static napi tracking strategy

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Add the static napi tracking strategy. That allows the user to manually
manage the napi ids list for busy polling, and eliminate the overhead of
dynamically updating the list from the fast path.

Signed-off-by: Olivier Langlois <olivier@trillion01.com>
Link: https://lore.kernel.org/r/96943de14968c35a5c599352259ad98f3c0770ba.1728828877.git.olivier@trillion01.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Olivier Langlois
2024-10-13 14:29:24 -04:00
committed by Jens Axboe
parent 71afd926f2
commit 6bf90bd8c5
5 changed files with 160 additions and 27 deletions
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2
io_uring/napi.h
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@@ -44,7 +44,7 @@ static inline void io_napi_add(struct io_kiocb *req)
struct io_ring_ctx *ctx = req->ctx;
struct socket *sock;
if (!READ_ONCE(ctx->napi_enabled))
if (READ_ONCE(ctx->napi_track_mode) != IO_URING_NAPI_TRACKING_DYNAMIC)
return;
sock = sock_from_file(req->file);