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 9B0821BF3A; Thu, 22 Aug 2024 20:26:45 +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=1724358405; cv=none; b=bDPuZuRoDMj3Swl7j1Sqg6pg3G+Ti0t6aS0bw/3Uz6bTr9Qmkufoa9zf0D1zqmc7u4CaLFWPLsHI1SKL5lgQeKLG5AOiAYalBw8ZenB4drH96YWjPrWcrUHrJ5n+3Y5xAwC78fKukkCVTTUKGJUwCqMrCATZj6toHCatcUXNobE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724358405; c=relaxed/simple; bh=frxqg9aAef2OsOIlFRw2Ax328+Ft+xt9ccrgfJQaQBM=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=MizN/7cTRtAfIR0neWEaKLoo2HUtMFKx2UD0UZTKULxAPx+I42yS6l3dyK5SohDqSFchXRB23axwLA8tlIBVhEeMxnE/yVO8PrrGWNIGlFKVvOu0VT02xDT8Ng8a8wM05xTSeab2KCE0+hM0wKXjJQVkSshycjXLZ3tFfbtuRQ8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=IjNgswlB; 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="IjNgswlB" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BBAF4C32782; Thu, 22 Aug 2024 20:26:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1724358405; bh=frxqg9aAef2OsOIlFRw2Ax328+Ft+xt9ccrgfJQaQBM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=IjNgswlBToBNQhdLWltsZAU11zgVBaqbVi+tiqPz7UBZwxIvaf9+7vVWnWxrmI2gy b0KB0y16wbXTYs2g6g8exjr0h1rDAGpCZ/M94U/1NiC6HPG+kROfktgrOeI6+TjUgM xmCGyGucFbX1CZ1ycjcUPctUjepD1nqqraWCz4LMr/i+YT0s8jXgL30d8IYDfo0vSZ BvA0CmAIQAC3BF+21EnEArkGFGt24hVKJ3u/GPx9Ylqzce+HnRzRu3q3f4zBx6WSnX cmyFxS4g2ouX0gbWuyo2Il04KGht9zQsDWiBDWIOX3rUNNz/Rk10m1hJ8XfHRD0vlQ BmFPqvpHcLWdw== Date: Thu, 22 Aug 2024 17:26:41 -0300 From: Arnaldo Carvalho de Melo To: Namhyung Kim Cc: sedat.dilek@gmail.com, Peter Zijlstra , Ingo Molnar , Ian Rogers , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, Nathan Chancellor Subject: Re: [Linux-6.11-rc4] perf BROKEN with LLVM/Clang 19.1.0-rc3 Message-ID: References: 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 Content-Transfer-Encoding: 8bit In-Reply-To: On Thu, Aug 22, 2024 at 01:11:22PM -0700, Namhyung Kim wrote: > On Thu, Aug 22, 2024 at 11:20 AM Arnaldo Carvalho de Melo > wrote: > > > > On Thu, Aug 22, 2024 at 11:17:21AM -0700, Namhyung Kim wrote: > > > > On Thu, Aug 22, 2024 at 7:40 PM Arnaldo Carvalho de Melo > > > > wrote: > > > > > From 155212c965b5b23a90b8558449dbfd1c60dad934 Mon Sep 17 00:00:00 2001 > > > > > From: Arnaldo Carvalho de Melo > > > > > Date: Thu, 22 Aug 2024 14:13:49 -0300 > > > > > Subject: [PATCH 1/1] perf python: Disable -Wno-cast-function-type-mismatch if > > > > > present on clang > > > > > > > > > > The -Wcast-function-type-mismatch option was introduced in clang 19 and > > > > > its enabled by default, since we use -Werror, and python bindings do > > > > > casts that are valid but trips this warning, disable it if present. > > > > > > > > > > Reported-by: Sedat Dilek > > > > > Tested-by: Sedat Dilek > > > > > Cc: Ian Rogers > > > > > Cc: Ingo Molnar > > > > > Cc: Namhyung Kim > > > > > Cc: Nathan Chancellor > > > > > Cc: Peter Zijlstra > > > > > Link: https://lore.kernel.org/lkml/CA+icZUVtHn8X1Tb_Y__c-WswsO0K8U9uy3r2MzKXwTA5THtL7w@mail.gmail.com > > > > > Signed-off-by: Arnaldo Carvalho de Melo > > > > > > Can we also add 'Fixes' tag to make this picked by stable kernels? > > > > Fixes what? This isn't a regression, clang 19 isn't available for Fedora > > 40, the most recent. > > No, I'm not saying it's a bug. But we may want to build the old > source code using new clang. Sure, and with the tags we have now, we can signal it by using Closes: and Cc: stable@kernel.org, without a version, I added those, the tags section then is this: Closes: https://lore.kernel.org/all/CA+icZUXoJ6BS3GMhJHV3aZWyb5Cz2haFneX0C5pUMUUhG-UVKQ@mail.gmail.com Reported-by: Sedat Dilek Tested-by: Sedat Dilek Cc: Ian Rogers Cc: Ingo Molnar Cc: Namhyung Kim Cc: Nathan Chancellor Cc: Peter Zijlstra Cc: stable@vger.kernel.org # To allow building with the upcoming clang 19 Link: https://lore.kernel.org/lkml/CA+icZUVtHn8X1Tb_Y__c-WswsO0K8U9uy3r2MzKXwTA5THtL7w@mail.gmail.com Signed-off-by: Arnaldo Carvalho de Melo Ok? - Arnaldo