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 BB969224D4; Mon, 9 Dec 2024 16:04:36 +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=1733760276; cv=none; b=XIyQC3SgMRq9QqfeWQA+8nwC5hgGlOLIuMMEGnCEKZ4/U20TKl+LY4esMwnyS0lVGLtH23gVTqIc9zrZfaQm4xtTR6NeeWV8Rb398TVFahkUmz7eqQXPHlLtZpI8s4OZzFS4q3qloi/JC1CDzlyKIr624NTqXb08OvvHcOjt9Zg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733760276; c=relaxed/simple; bh=jHJ+Lmy6qdaeBxGdsocZiv6T41J2pFCMPlAHb+BuWjI=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=EXWlCvVXtD7//QOlsvIYVRYc1Bpp0vk7C5Y4yRXxOWw4EZn8CgqqcUjdkaSKTye/NwzyQc4SRV71tELi+datA5qagO4VmkAUWs4FaM2//a6oC44MNbxcPXxr0ZpWC7i+10Mb1p5gWiEWucvDjegifHKe1trG80OxJUMJyodZWpA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=tb6X/01V; 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="tb6X/01V" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BD359C4CED1; Mon, 9 Dec 2024 16:04:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1733760276; bh=jHJ+Lmy6qdaeBxGdsocZiv6T41J2pFCMPlAHb+BuWjI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=tb6X/01Vq4zkCnxcLyHCgXgsq0TpLTO/4LqdLElYb3RAbTFqRRapoQ+5aWXKtgU76 MQh7w50NXyKuIn/V7V1qzvG63on+46Qswowpi2ZvGiADKqe0OYujebXYRj7e9MzEVq XAgrGma4qrcJOLwKRAJQA5npkG09558TanzyrGv+QBAv1wwvG3ZHxzYyiF6w0djllk atxECd2jA0XPKsxeYuZYo9AAbs85CmAzLnaFxLsvGtdFh2gTHlMZiYKVkdmehbScXT FaStkduyZ2s0ciMc5oQlwNXbSxvQcnsIvPWIbdqu7PRoC8FIKQ+Kyi7lTs4gr9YeI5 Dm6cpwrNRnmYw== Date: Mon, 9 Dec 2024 13:04:33 -0300 From: Arnaldo Carvalho de Melo To: Leo Yan Cc: Ian Rogers , Peter Zijlstra , Ingo Molnar , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Adrian Hunter , Kan Liang , James Clark , Kyle Meyer , Ben Gainey , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v1 0/8] Cpumap improvements for large MAX_NR_CPUS Message-ID: References: <20241206044035.1062032-1-irogers@google.com> <20241206230358.GB5430@e132581.arm.com> Precedence: bulk X-Mailing-List: linux-perf-users@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: <20241206230358.GB5430@e132581.arm.com> On Fri, Dec 06, 2024 at 11:03:58PM +0000, Leo Yan wrote: > On Thu, Dec 05, 2024 at 08:40:27PM -0800, Ian Rogers wrote: > > > > Prompted by Kyle Meyer's report of the > > MAX_NR_CPUS value being too small, initiate some clean up of its > > use. Kyle's patch is at the head of the series. The additional patches > > hide MAX_NR_CPUS as exposed from cpumap.h, reduce its use by removing > > perf_cpu_map__read, and try to better size the temporary CPU array in > > perf_cpu_map__new. > > Reviewed-by: Leo Yan Thanks, applied to perf-tools-next, - Arnaldo