From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A492EC77B7C for ; Tue, 9 May 2023 13:05:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235244AbjEINFz (ORCPT ); Tue, 9 May 2023 09:05:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39334 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233120AbjEINFw (ORCPT ); Tue, 9 May 2023 09:05:52 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A77B310F6; Tue, 9 May 2023 06:05:51 -0700 (PDT) From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1683637550; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=66CwgAKwlAwu0o+HSirJnximEw9Bjlm23mz/HWPXU1s=; b=hbxyUDBnvdDjCwEe2fKEwFmkPPF3xy/eLmej2wKSXWr0d9f7bb+QqZDpCdayQQQuLelVkk TBajaFgXIRDO/ZagO/eatcnJ1gv/rjzhEDcs0VzmdsJ6YgoRM4296eoJYO7YsDmsXx9LuR Vzv/C/PAuDiXr/eriryMsopQnD1Jl6wbF6dd3jY2eGg7b1vqKV7US33B3IWgxbQruXg9cg FDP77qfEu0rsvW0T6gNk5AgPFmtZ9Z/i84jmz57RQnVO7Y6qgf49rjv3CnkyKDZWKNGmr2 hu8dgyS3LbSNbPk0ZZbojg5UckR7EHhnzl3agppxpE88rRnekkpV/3voJ3aeOQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1683637550; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=66CwgAKwlAwu0o+HSirJnximEw9Bjlm23mz/HWPXU1s=; b=rrH6jhUO5K6/+9ljImq/xGhfEnagn6yN0AbNdNjZ4urlUv98qTkpEpavwlAhkSMUwyWfNs C3Dq88rRNZXyxcAw== To: Jason Xing , paulmck@kernel.org, peterz@infradead.org, bigeasy@linutronix.de, frederic@kernel.org Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, kerneljasonxing@gmail.com, Jason Xing Subject: Re: [PATCH] softirq: let the userside tune the SOFTIRQ_NOW_MASK with sysctl In-Reply-To: <20230410023041.49857-1-kerneljasonxing@gmail.com> References: <20230410023041.49857-1-kerneljasonxing@gmail.com> Date: Tue, 09 May 2023 15:05:50 +0200 Message-ID: <87y1lxzmc1.ffs@tglx> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Apr 10 2023 at 10:30, Jason Xing wrote: > From: Jason Xing > > Currently we have two exceptions which could avoid ksoftirqd when > invoking softirqs: HI_SOFTIRQ and TASKLET_SOFTIRQ. They were introduced > in the commit 3c53776e29f8 ("Mark HI and TASKLET softirq synchronous") > which says if we don't mask them, it will cause excessive latencies in > some cases. As we are ripping this out, I'll ignore this patch.