From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mta1.migadu.com (out-18.mta1.migadu.com [95.215.58.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6019744E64F for ; Thu, 1 Oct 2026 11:44:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790855069; cv=none; b=AqmPZ4w19YVOHPZhFtlDu9slmrtSFoOYgVKkYoBxc30wrh94l/aZEBWRXD4eg+M+81Ruq0W5oB8WTk2skTVbMZie7nXXOWSgzysiFEs/nBcWRh3oL8K7AY3xLoADEeuJfzHyp+QDJzzXH+PKZLpndOKeKHoRE/5niQJgvxYZjs4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790855069; c=relaxed/simple; bh=peXh9c6xAd6ckv+sJNrdXLiSAIKk1mP6MG42SI/sR/A=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=jU9XOZ6iYIY63poITL1Te/J/Ml3X+9n3x5pZFmcQxtZrwBChbjC4ZRJAkJlQK1XAmrbGcyXxg3ByoQV7jCOG4A6r2f0DbUJ/xUaHfcpoqEXBlZGgXe9X3l1kchpSstYlFSp1vAviWRlCNcDc8HKgwNVfQGHxrr45Y9YCn1fuiUE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=pQ812e+g; arc=none smtp.client-ip=95.215.58.18 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="pQ812e+g" X-Envelope-To: linux-kernel@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=peXh9c6xAd6ckv+sJNrdXLiSAIKk1mP6MG42SI/sR/A=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1790855062; v=1; x=1791459862; b=pQ812e+gn3XmD5FZfEdcCS7cLDb7IJ98i87AUUpS80yJaLQAaeUptEAMO6fN4yq0BWYb6/oi KYyBzcrUE6f6L9LplCy4bSWWqmXB5SlUqdx6EWuNi/KON6CwEu2QS8wOjAVDpFxBbvT3ODS7WJF ruM3k3vc57GNMQk6XpsFkawM= X-Envelope-To: linux-kernel@vger.kernel.org Received: by smtp.migadu.com with ESMTPS id bde4632800327e3b; Thu, 01 Oct 2026 11:44:22 +0000 X-Mizu-Trace-ID: bde4632800327e3b X-Migadu-Flow: FLOW_OUT Date: Thu, 1 Oct 2026 04:44:16 -0700 From: Shakeel Butt To: Peter Zijlstra Cc: Tejun Heo , Ingo Molnar , Will Deacon , Boqun Feng , Waiman Long , Paul McKenney , Greg Kroah-Hartman , Christian Brauner , Sebastian Andrzej Siewior , Johannes Weiner , Jonathan Corbet , Meta kernel team , cgroups@vger.kernel.org, driver-core@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH RESEND 0/7] locking: opt-in tracking of sleeping lock holders Message-ID: References: <20260924155025.949998-1-shakeel.butt@linux.dev> <10b93dce66eb13a23fbab563df259092@kernel.org> <20261001104154.GJ4121339@noisy.programming.kicks-ass.net> 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=us-ascii Content-Disposition: inline In-Reply-To: <20261001104154.GJ4121339@noisy.programming.kicks-ass.net> On Thu, Oct 01, 2026 at 12:41:54PM +0200, Peter Zijlstra wrote: > On Mon, Sep 28, 2026 at 01:34:30PM -1000, Tejun Heo wrote: > > Hello, Shakeel. > > > > On Thu, Sep 24, 2026 at 08:50:18AM -0700, Shakeel Butt wrote: > > > The answer is a count in task_struct. Only the locks that ask to be > > > tracked are counted. The mechanism introduced here is planned to be used > > > by solutions for shared lock isolation scenarios [1]. > > ... > > > [1] https://lore.kernel.org/20260921192559.2619635-1-shakeel.butt@linux.dev/ > > > > Let's resolve the discussion on the overall approach first. > > So I must admit to absolutely hating these patches. I think I should have started a conversation/discussion email before sending out the multiple patch series which kind of doing multiple overlapping things and it is causing confusion. Let me actually do that and I will CC relevant folks.