From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (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 768833BBE0; Fri, 13 Sep 2024 15:26:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.92.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726241198; cv=none; b=EgzpIAPv5KXEcs9TwiHhP1m1JP2VSvxPz1tFbmzkoPHN6vZgdu74FI9XavNP52I04EyF3P3hb/Z5tyS97glph0HzasE9eSXV1yz1Uu4pP2eut0so/vUqFAO9vU4+9+plrpY9j0rZ9OIhpZXXYKjj45zzAXyd5/QYyGYB3qS9gFc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726241198; c=relaxed/simple; bh=tk2ldwHgpfFM8WFeOUm1XeMFoaVIE68l0zd8wBIKE6U=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=JXyHo4aEPq4M53tR9FFPlPz82jUXaBDfi2Ao7v4H4mK6dkAePwBF38Z/waBI/+TShGlWLmPBhn7TOYRXabi3CqyUMwkX9BeKQbB80mAQmVd/u4iZekxw33+IxDtgDM1z/Y6u2660DXpRbpnZH6bEVSTHFaQzDn8oyYkoMCseJC8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=LmXqy4sv; arc=none smtp.client-ip=90.155.92.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="LmXqy4sv" 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=tk2ldwHgpfFM8WFeOUm1XeMFoaVIE68l0zd8wBIKE6U=; b=LmXqy4svLHHSrxsUgsuDrap2hi /Ca+6BLnqz77xWZL8n/QP2FMDFFuLob7/M4TFUN+BXC1BiCwp51+QlJRhbmmo/jgIiquDfFK8bBPt CeSwAaQ6W9um0MIYBUQfmcXEvdQ6R3+VqTeT6+SXfj8yQWUcWXjsAAWffLagfIOeb0qwBcWWjYbdW /t6Sw22cFPaFIykR0+LC9F8QA90euyyzTUyeSBzsj0RPOPuTGPqiN6ENh/pm37CY27bB7/gUrqPwf mbjQOS/kwVHzRxF27Pzxc6QIQkrjxwGUBkP5BTUjgTXLfyV5Wnb8wwunf0cM32JCMxTNhN1tKjIO/ i0sDCG9w==; Received: from j130084.upc-j.chello.nl ([24.132.130.84] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.98 #2 (Red Hat Linux)) id 1sp8Bh-00000000g5U-3WsP; Fri, 13 Sep 2024 15:26:21 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id 12DB43003E1; Fri, 13 Sep 2024 17:26:21 +0200 (CEST) Date: Fri, 13 Sep 2024 17:26:21 +0200 From: Peter Zijlstra To: Josh Poimboeuf Cc: Namhyung Kim , Steven Rostedt , Ingo Molnar , Arnaldo Carvalho de Melo , linux-kernel@vger.kernel.org, x86@kernel.org, Indu Bhagat , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , linux-perf-users@vger.kernel.org, Mark Brown , linux-toolchains@vger.kernel.org Subject: Re: [PATCH RFC 04/10] perf: Introduce deferred user callchains Message-ID: <20240913152621.GW4723@noisy.programming.kicks-ass.net> References: <20231111184908.ym4l6cwzwnkl7e6m@treble> <20231120140334.GW8262@noisy.programming.kicks-ass.net> <20240913130834.hq4gj27fcklakkzb@treble> <20240913133629.GV4723@noisy.programming.kicks-ass.net> <20240913135351.tyjuekjzvb5xtawn@treble> <20240913144714.gkksyfk242w3fvh4@treble> 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: <20240913144714.gkksyfk242w3fvh4@treble> On Fri, Sep 13, 2024 at 07:47:14AM -0700, Josh Poimboeuf wrote: > Or if it would instead make sense to combine all the deferred user > options into a single variable length PERF_RECORD_USER_DEFERRED event > type? This, have all those samples refer to the same future user callchain.