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 B0880202F67; Tue, 1 Apr 2025 14:20:17 +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=1743517220; cv=none; b=R+IM7A3XU7W7dLfUjhfCgeuJ2E+ycmQ1fnsHt1j/tTyxnHtMdAq4pXqLla8OBwod87P25UL69UPjgOOSzhiOa1HAkxP9Wn+sEOsMgiZGBfk6m9YRcR6iIWggTVLcFlprJB6Vd5pOJ3HkZsgXwnqv6Posn8f7nv99nsaduTOLhvA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743517220; c=relaxed/simple; bh=mRIBKcBVbGppx74YoEbo3iWRgTc8Hy63ntijK5V2KcI=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=U/fVXItgQDtif6a30wyZxF9VFEdSnIDI0vMVpaX+cfp5V/lNeLHQFh0XcBGQ0bU1eJm3hKrD+UN3Cj+9D2/nM8trVhbsfkgKof766AOA2bJYNhg1+q+ut2BQqcnngAie6n3cn8sJf/amN2xR3qiyn/m7KdnkUw3VKFgQPSPC+qU= 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=Amg8tzAj; 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="Amg8tzAj" 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=BbOt8uPg4MQ5ULTpBSXlv+eys0/YbsgiMNxX/LarGTQ=; b=Amg8tzAjZSvGLYXW3j8wk4gcxF IG+dUXapqgDFQkVq14akqVm3zJrRIdUBngzfGDXCFBlJlpw3ji/m9DmiE9IlT4O7BzQw437DD8x6T jX5uM9l4Iw95c5/LNuPKtys5qqHYOcCfoBMz09ieNBlvH7rQDpDaWelu+G7Bl2oLKQFBZtgXOZ4kW tHE+E+PeMzGkZbCgwLHadLpCnN8ajLwgrbPoYs+AAPf+Lpuj1SKmBUqw5nKsjHhQRU5iYv7UswSVs CNwPo6DAv3UMpNqu01U02LCHKxkK4AuSbgF+27zBVY5XXA6uyLfxw5AJbYBfQmbmgYNHQSfddQn/A QVN0arVQ==; 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 4.98.1 #2 (Red Hat Linux)) id 1tzcTG-00000006pW2-3wd7; Tue, 01 Apr 2025 14:20:07 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id 6384830049D; Tue, 1 Apr 2025 16:20:06 +0200 (CEST) Date: Tue, 1 Apr 2025 16:20:06 +0200 From: Peter Zijlstra To: Thorsten Blum Cc: Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , "Liang, Kan" , Thomas Gleixner , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Ingo Molnar , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] perf/x86: Rename bts_buffer variables and use struct_size() Message-ID: <20250401142006.GF5880@noisy.programming.kicks-ass.net> References: <20250331122938.1837255-2-thorsten.blum@linux.dev> 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: <20250331122938.1837255-2-thorsten.blum@linux.dev> On Mon, Mar 31, 2025 at 02:29:38PM +0200, Thorsten Blum wrote: > Rename struct bts_buffer objects from 'buf' to 'bb' to improve the > readability when accessing the structure's 'buf' member. For example, > 'buf->buf[]' becomes 'bb->buf[]'. > > Use struct_size() to calculate the number of bytes to allocate for a new > bts_buffer. Compared to offsetof(), struct_size() provides additional > compile-time checks (e.g., __must_be_array()). > > Indent line 327 using tabs to silence a checkpatch warning. > > No functional changes intended. This is two things, as such should be two patches. Also, meh. This is going to create extra work for the arch-pebs guys I suppose.