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From: Olivier Langlois <[email protected]>
To: Jens Axboe <[email protected]>,Pavel Begunkov
	<[email protected]>,[email protected]
Subject: [PATCH 0/2] io_uring: minor sqpoll code refactoring
Date: Tue, 30 Jul 2024 17:19:30 -0400	[thread overview]
Message-ID: <[email protected]> (raw)

the first patch is minor micro-optimization that attempts to avoid a memory
access if by testing a variable to is very likely already in a register

the second patch is also minor but this is much more serious. Without it,
it is possible to have a ring that is configured to enable NAPI busy polling
to NOT perform busy polling in specific conditions.

Olivier Langlois (2):
  io_uring: micro optimization of __io_sq_thread() condition
  io_uring: do the sqpoll napi busy poll outside the submission block

 io_uring/napi.h   | 9 +++++++++
 io_uring/sqpoll.c | 9 +++++----
 2 files changed, 14 insertions(+), 4 deletions(-)

-- 
2.45.2


             reply	other threads:[~2024-07-30 22:22 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-07-30 21:19 Olivier Langlois [this message]
2024-07-30 20:56 ` [PATCH 1/2] io_uring: micro optimization of __io_sq_thread() condition Olivier Langlois
2024-08-02 11:17   ` Pavel Begunkov
2024-07-30 21:10 ` [PATCH 2/2] io_uring: do the sqpoll napi busy poll outside the submission block Olivier Langlois
2024-08-02 11:14   ` Pavel Begunkov
2024-08-02 14:22     ` Olivier Langlois
2024-08-02 15:30       ` Pavel Begunkov
2024-08-02 13:11 ` (subset) [PATCH 0/2] io_uring: minor sqpoll code refactoring Jens Axboe

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