From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 03E123595C; Tue, 23 Sep 2025 10:28:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758623338; cv=none; b=MZ8CcbJiaerxLlIeyPMF6XfWM//ruPE4tH+dthwRt8kkeamz/ntLxd5d4rEARtQTLIZAfD6Bypbzl10eu6UykYA6+qloZQFPt+LNaEHvRROJav/myXYDFeSrRTxAFpDa1krqXnyL0/QIuI3mLlqvVY+zft18mIiN0L1dr86dp/U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758623338; c=relaxed/simple; bh=aandL0IO1TEN8UynBwUTcT5P8YA24LOKifzprqPZ8eA=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Pcc23dDMJcLN6B2Vcw39u2otFPoh4nM7dDRyR9olsNdgqzE9QvsXUPq2BJlLoO9pMzpPpj2Tv76bM8iZouJB2N41j5ysKktPn8SRnqplrSut5lm01IpGAFqTsuNIWRm8w8KMF85Ev5Jg6/kZr8ZhnrQZVJ2U4eVvKoZ/yFH7Fkg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=aejIdIAX; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="aejIdIAX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8E3DDC116B1; Tue, 23 Sep 2025 10:28:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1758623337; bh=aandL0IO1TEN8UynBwUTcT5P8YA24LOKifzprqPZ8eA=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=aejIdIAXP8cB8XbFVTn50JUyxMDaOme7tAshtuA32csDbVeYckRFJ0MIV8BSNOgXk gjtw0QpWBTnEB/jQ96GSWvDf9eeSVldqBRkPpucPML5Yjy1fn7PypC1ZYyqcqYfGe8 UW65g3ee59xTiyAywusKQzlIR8xLjCrJ9BZkTyRhzM/MaqqqEzq/GvTljuxxJNDpkp Yk9ZaroKQYxXLXH2w6+1lBP1D9mZRpSaPvBc6VFVV6GXixeQYvVacQWN018LsgtA3M eVpOdtukynX9BX/yZ+brGDqfdMIyRh1f/Jc3hi7FmGMpbClTAX8pLxsGoibwM8vECa 0hJjYEBF/2TyA== Date: Tue, 23 Sep 2025 06:28:48 -0400 From: Steven Rostedt To: Peter Zijlstra Cc: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, bpf@vger.kernel.org, x86@kernel.org, Masami Hiramatsu , Mathieu Desnoyers , Josh Poimboeuf , Ingo Molnar , Jiri Olsa , Arnaldo Carvalho de Melo , Namhyung Kim , Thomas Gleixner , Andrii Nakryiko , Indu Bhagat , "Jose E. Marchesi" , Beau Belgrave , Jens Remus , Linus Torvalds , Andrew Morton , Florian Weimer , Sam James , Kees Cook , Carlos O'Donell Subject: Re: [RESEND][PATCH v15 2/4] perf: Support deferred user callchainshttps://lore.kernel.org/linux-trace-kernel/20250827193644.527334838@kernel.org/ Message-ID: <20250923062848.0bc4ff2b@batman.local.home> In-Reply-To: <20250923093821.GB3419281@noisy.programming.kicks-ass.net> References: <20250908171412.268168931@kernel.org> <20250908171524.605637238@kernel.org> <20250923091935.GA3419281@noisy.programming.kicks-ass.net> <20250923053515.25a1713e@batman.local.home> <20250923093821.GB3419281@noisy.programming.kicks-ass.net> X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Tue, 23 Sep 2025 11:38:21 +0200 Peter Zijlstra wrote: > On Tue, Sep 23, 2025 at 05:35:15AM -0400, Steven Rostedt wrote: > > > I even pushed this to a git tree. Not sure why it didn't get flagged. > > I've been looking at this... how do I enable CONFIG_UWIND_USER ? Hmm, maybe that's why it wasn't flagged. > > I suspect the problem is that its impossible to actually compile/use > this code. It needs an arch to enable it. Here's the x86 patches that I was hoping would get in too: https://lore.kernel.org/linux-trace-kernel/20250827193644.527334838@kernel.org/ Hmm, but I had a branch that applied all the necessary patches :-/ -- Steve