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Tue, 03 Nov 2026 09:44:03 -0800 (PST) Received: from prairie.home ([2a02:168:fe54:0:500c:846b:8abe:fa7a]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4abebe33e79sm262225075e9.2.2026.11.03.09.44.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Nov 2026 09:44:03 -0800 (PST) From: Cinq Prairie To: Jens Axboe Cc: Jakub Kicinski , Stefan Roesch , io-uring@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] io_uring/napi: don't end the single NAPI busy poll early on need_resched() Date: Tue, 3 Nov 2026 18:44:01 +0100 Message-ID: <20261103174401.5520-1-notprairie@gmail.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20261027204840.7823-1-notprairie@gmail.com> References: X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Tue, 27 Oct 2026 21:48:40 +0100, Cinq Prairie wrote: > With a single registered NAPI, io_napi_blocking_busy_loop() hands > io_napi_busy_loop_should_end() to napi_busy_loop_rcu() as loop_end and > runs its own loop once, relying on __napi_busy_loop() to spin until > that predicate fires. Ping. v2 follows the approach you suggested in the v1 thread (absolute deadline, fast path kept).