From patchwork Mon Jan 16 03:50:47 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yang Yingliang X-Patchwork-Id: 1726873 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org (client-ip=112.213.38.117; helo=lists.ozlabs.org; envelope-from=linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org; receiver=) Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4NwHfL1HVSz23fp for ; Mon, 16 Jan 2023 14:32:57 +1100 (AEDT) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4NwHfJ1YMNz3cdV for ; Mon, 16 Jan 2023 14:32:56 +1100 (AEDT) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=huawei.com (client-ip=45.249.212.188; helo=szxga02-in.huawei.com; envelope-from=yangyingliang@huawei.com; receiver=) Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4NwHf40l46z3c2q for ; Mon, 16 Jan 2023 14:32:39 +1100 (AEDT) Received: from dggpemm100007.china.huawei.com (unknown [172.30.72.54]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4NwHbm1R2BzRrJ7; Mon, 16 Jan 2023 11:30:44 +0800 (CST) Received: from huawei.com (10.175.103.91) by dggpemm100007.china.huawei.com (7.185.36.116) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.34; Mon, 16 Jan 2023 11:32:32 +0800 From: Yang Yingliang To: Subject: [PATCH] powerpc/imc-pmu: use GFP_ATOMIC under spin_lock() Date: Mon, 16 Jan 2023 11:50:47 +0800 Message-ID: <20230116035047.2323412-1-yangyingliang@huawei.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [10.175.103.91] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To dggpemm100007.china.huawei.com (7.185.36.116) X-CFilter-Loop: Reflected X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: yangyingliang@huawei.com, npiggin@gmail.com, kjain@linux.ibm.com Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" After commit 76d588dddc45 ("powerpc/imc-pmu: Fix use of mutex in IRQs disabled section"), init_nest_pmu_ref() is called under spin_lock(), use GFP_ATOMIC while calling kcalloc(). Fixes: 76d588dddc45 ("powerpc/imc-pmu: Fix use of mutex in IRQs disabled section") Signed-off-by: Yang Yingliang --- arch/powerpc/perf/imc-pmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/perf/imc-pmu.c b/arch/powerpc/perf/imc-pmu.c index 100e97daf76b..a9094835e648 100644 --- a/arch/powerpc/perf/imc-pmu.c +++ b/arch/powerpc/perf/imc-pmu.c @@ -1521,7 +1521,7 @@ static int init_nest_pmu_ref(void) int nid, i, cpu; nest_imc_refc = kcalloc(num_possible_nodes(), sizeof(*nest_imc_refc), - GFP_KERNEL); + GFP_ATOMIC); if (!nest_imc_refc) return -ENOMEM;