From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BDAD62848B7 for ; Thu, 28 Aug 2025 16:04:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756397100; cv=none; b=sTYEvh+LxvUQWrGlQpnbgp9l0kvQbnJDJVsP7SLhqTLRPtOUxk4NxXKvhh55CnSvYzV57kNiGjgA29LtVkBiBN75/3kbvvjHj+KS5WMDeW0OT4UeLHPPjXI6DI0oiXbGd0rhNqYuVQ/n+eqog3+uNDpIVdTtkGZLGogFnbjBs5c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756397100; c=relaxed/simple; bh=ecVMeP443f64m+M+NmMkG4F5JybvvXU7SpIX8upmfhk=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=X81rlM8cskqJTvDfteko2mMqjZnRPVIl9HZ4ZgkWX2ObTl9UWvt11NthEFMHqi1wYh97HX5t4DaHwdQynCeA2p7Cnj0rsvvjQSqE1u7iZoj0qtGrng/77CZdWgF+KhD4Iqs2TUuaqIOWxNf9VB3+h5xq3cxKjqX4pSxaf95GGw4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=2fAWHEFh; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=rqd6HEqk; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="2fAWHEFh"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="rqd6HEqk" Date: Thu, 28 Aug 2025 18:04:55 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1756397096; 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=ecVMeP443f64m+M+NmMkG4F5JybvvXU7SpIX8upmfhk=; b=2fAWHEFhcs28s66ugBbyfln+vyjsbXqNmjzM0hhvMDxzuElxcZRiVqLQVGrcdCRRCDJIV0 SFq91LjmzaKLikhhZbgmuX0hQIKB7lTOQvkxdGgWZGv+wXrZE3EHSHM6obXqrnjVNn2OMk lhSIPCmkVht+RNmGGOrmXOU+GmoVoGbxL3WVEPlSE4+qn4htNsoulMEQCCq5Z4gxj/F9rC IK4CJ4d/xc5DSVDDNL6I3dI0Onfz+M5HgJz0NHLUaSHHwmm6PmXMH4sEjUvGGm946mG9sX 9AY8RNIrjcXWJQesLJZJQXhY1U2k+DfPeo9sGJzw4Ofei+vKtSpClbtSwPl2fw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1756397096; 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=ecVMeP443f64m+M+NmMkG4F5JybvvXU7SpIX8upmfhk=; b=rqd6HEqk+37sKUz4GGl5DoVeRJ7Cgl4e2/pi7DNlcWyBtS7kEjUBBodg0wU0tcwHRFeKaW j/H1sKZwUxW89TAw== From: Sebastian Andrzej Siewior To: Tejun Heo Cc: linux-kernel@vger.kernel.org, linux-rt-devel@lists.linux.dev, Lai Jiangshan , Ingo Molnar , Peter Zijlstra , Steven Rostedt , Thomas Gleixner Subject: Re: [PATCH] softirq: Provide a handshake for canceling tasklets via polling on PREEMPT_RT Message-ID: <20250828160455.4dxzTug1@linutronix.de> References: <20250819150105.DYeV89fa@linutronix.de> <20250820103657.vDuDuLx6@linutronix.de> <20250820105518.Yf36NzJd@linutronix.de> <20250821092827.zcFpdnNy@linutronix.de> <20250822094812.L4hiquhY@linutronix.de> <20250826154942.BcGs2_U5@linutronix.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: On 2025-08-26 06:27:27 [-1000], Tejun Heo wrote: > Hello, Hello Tejun, > Oh yeah, that makes a lot of sense to me - splitting it out into something > which is named explicitly to discourage further usages. I am a bit lost now. Do you intend to apply the patch and we came up with the bh-canceling-from-bh API later on or what is the plan? I can repost it of course together with the tasklet patch. > Thanks. Sebastian