From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=90.155.92.199 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794393987; b=r+uDxdOh1xjX6jqOHdBHIyAH5omt3YRVSLhr8SFkOD9u2oMNI2dXEScI+6tdlXul6/B0 ssf0o++vH2htWG0PCuGqfZ3FxBZtLC2JocGjQ4KxwMWYYGsBRTXHWtpVxGyy4nXQgsEeQ rvN/jfNJkPob71YEqtwYEPoJsDgCKc3Okqab2jf3iWIJ7wVT4znLg2xSeaH2qmVibQyek iS9N1uRtxZfybtC+J2zSgpN5XbN3g7qto+S4+UI6Uhx2J1NqxskRZkysqqktpezmidJqX 16zaI0xvbd1Ny9hZxi8vJ2om4+fYfVjSWT4AXKAfMYf4KOaaMWHfF/hiozJPH/7KGRA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794393987; h=DMARC-Filter:DKIM-Signature:Received:Received:Date:From:To:Cc: Subject:Message-ID:References:MIME-Version:Content-Type: Content-Disposition:In-Reply-To; bh=oa3hkR6ZqR7fTUH+Q11dolHC41KtpjWU3cnhP6a6ivs=; b=xQdIA7auFt8V04OKnoBbJ8wiljWm7W9tdEuYlwi0A6DnsYUcidkrOcgnAI3kqxlpYlrn wMNIGkJRpweXa00ix0fbBalYGoqxNETKlIWdCp1pWoHNw37sAXgoCGqbzlRhle0Ev69g6 S+x9vrwfAJuifpbXTvtW0u+jx80uOYfokv5AYhozyuHdreWp+Iy63zwNjKals1nn73sj+ gImnMPWjjaGGnIhqiIA4MP/ifIwblbAj5zC8U/j8YWVdfrYK1yvdVcF29z/63Nk2/u5gf 9GuflLCxehB/rf21IU9BUSlHkA/HP7+lEH+dC5uGvsxHrSHGtvS7a0QnFMNu11Dw/1Q== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=infradead.org; spf=pass smtp.mailfrom=infradead.org; dkim=pass header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256 header.s=desiato.20200630 header.b=VBONUVvO; arc=none smtp.remote-ip=90.155.92.199 Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DD445606A321 for ; Wed, 11 Nov 2026 10:46:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org DD445606A321 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256 header.s=desiato.20200630 header.b=VBONUVvO DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=oa3hkR6ZqR7fTUH+Q11dolHC41KtpjWU3cnhP6a6ivs=; b=VBONUVvOCYYBMOpb51exE7lSHt 8/b7coWJEqdmrSfrs/1Zwc+aPhpIXe9Mg52gSkkrg3SbH3rUY9EFBMtd3HFPguJqVXGUyq91t7X+F mNJ1Hc+F69dWLtrXMAJYe4rcJxXX/nWeGH8nb7SaR9sRTsVzHzUZmwHJuq/Dz1cv4tyysoBaXK2P7 gQTeFCz2jPVei68mJV7SXx307h9aeLqEirop6EgmkJejhV/R5IKy2nduM0CrH774N7OUjmHNsRxrM R3b0+3PBmV2AAygHcWysnx1xoUpRqWkKF/CcaMca/pSDev3IyIhj/2yeCqdnbfhUWdgRpF0O0bcXq zU3WAtHA==; Received: from 77-249-17-252.cable.dynamic.v4.ziggo.nl ([77.249.17.252] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.100.1 #2 (Red Hat Linux)) id 1xR5qN-000000092L1-3z4K; Wed, 11 Nov 2026 10:46:19 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id 7492F300969; Wed, 11 Nov 2026 11:46:18 +0100 (CET) Date: Wed, 11 Nov 2026 11:46:18 +0100 From: Peter Zijlstra To: Kayra Cizmeci Cc: mingo@kernel.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, vschneid@redhat.com, kprateek.nayak@amd.com, linux-kernel@vger.kernel.org, tj@kernel.org, ziqianlu@bytedance.com Subject: Re: [PATCH v2 02/12] sched/core: Introduce rq_drop_lock() Message-ID: <20261111104618.GM2668200@noisy.programming.kicks-ass.net> References: <20261107115913.261163891@infradead.org> <20261107120206.858693648@infradead.org> 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-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Sun, Nov 08, 2026 at 12:25:10PM +0300, Kayra Cizmeci wrote: > Hi Peter, > > On Sat, Nov 07, 2026 at 12:59:15PM +0100, Peter Zijlstra wrote: > > Currently rq_unpin_lock() serves a dual purpose, it pairs with both > > rq_pin_lock() and rq_repin_lock(). That is: > > > > rq_pin_lock() > > rq_unpin_lock() > > rq_repin_lock() > > rq_unpin_lock() > > > > In prepration of making the temporary drop and the final drop > > nit. 'prepration' should be 'preparation' :-). I shall forever be making typos :-) fixed.