From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) (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 75D082E265A for ; Tue, 13 Jan 2026 15:10:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.176.79.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768317032; cv=none; b=qFj7YiNaKJOppGmgPWHFEPvHnVTezjtvvuQiAdVXLgXUhbUHy0JNWs2kz5mAdU48oRXd9LJ97oO0oEjkbR5B+78QQdM0Ga+boFQsb9zXDMs7CUv9XgdOVjCBFrsolQwBN9R4kpxbIayk5QKuGHD78dPUALoiJl9XzsOi3fs2hz8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768317032; c=relaxed/simple; bh=nfQWI25iYMEm0JItLJejIbVcfMXRgNyhoJuv1ONtPQE=; h=Date:From:To:CC:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=bFQlNYpM9d6P0C1Os4vKoNwAwiLxppNHO1AEmUUuaWlH0l+eq2RZ9oJOM36UeGAR62eE53mceYFHCebKcj28cQqK2OdKm3UjF16jlagU4QZ8m0I9diWPD7CIRsa7qL8dOZpbEPI6Z6tVxN2lgQlgdDDBnEpG8Vf6Ss8xHWy7n9M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=185.176.79.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.18.224.150]) by frasgout.his.huawei.com (SkyGuard) with ESMTPS id 4drCNL0rHjzHnGkM; Tue, 13 Jan 2026 23:10:10 +0800 (CST) Received: from dubpeml100005.china.huawei.com (unknown [7.214.146.113]) by mail.maildlp.com (Postfix) with ESMTPS id 4478F40563; Tue, 13 Jan 2026 23:10:28 +0800 (CST) Received: from localhost (10.203.177.15) by dubpeml100005.china.huawei.com (7.214.146.113) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.36; Tue, 13 Jan 2026 15:10:26 +0000 Date: Tue, 13 Jan 2026 15:10:25 +0000 From: Jonathan Cameron To: Ben Horgan CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: Re: [PATCH v3 30/47] arm_mpam: resctrl: Pre-allocate free running monitors Message-ID: <20260113151025.00001911@huawei.com> In-Reply-To: <20260112165914.4086692-31-ben.horgan@arm.com> References: <20260112165914.4086692-1-ben.horgan@arm.com> <20260112165914.4086692-31-ben.horgan@arm.com> X-Mailer: Claws Mail 4.3.0 (GTK 3.24.42; x86_64-w64-mingw32) Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: lhrpeml100010.china.huawei.com (7.191.174.197) To dubpeml100005.china.huawei.com (7.214.146.113) On Mon, 12 Jan 2026 16:58:57 +0000 Ben Horgan wrote: > From: James Morse > > When there are enough monitors, the resctrl mbm local and total files can > be exposed. These need all the monitors that resctrl may use to be > allocated up front. > > Add helpers to do this. > > If a different candidate class is discovered, the old array should be > free'd and the allocated monitors returned to the driver. > > Signed-off-by: James Morse > Signed-off-by: Ben Horgan Reviewed-by: Jonathan Cameron