From patchwork Thu May 25 02:55:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Song Shuai X-Patchwork-Id: 13254723 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9E7C9C77B7C for ; Thu, 25 May 2023 02:58:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=oFGjHujX2KuovbD+mUvXf200VYSfI3xkO1QSVtaBUmM=; b=J42mGIsddMzCWh zEPDpW1jqKE3+xUsnPx2kMsT9SqV/tJ8Pg6ZOfFEWagU7E4I1eNpCYh1QCtvY+j+rXMuYE+i9paDV fIyShT89gUUEjuYwKFdgCYHDLugxLozNlbYl4g3DYd/FDo/RdqZZLsUiiffcgul+mf4/Kwx4+b7SB Xj7SzgdRDKxCc3WAvm0mry4r8gi7o5vO6JszqhUAFqUVuwByXCz8RPi+GMPcDCnq1Nn/9LCxYi13J XfGIJ2pfdOCt+8rRXMCLL5umQ/LTJ3/5xRISljbdhSp3ZsF4DT5r+qa1my40z5KN9ngXhp9hnvB3/ JInAlbq0GSN0iQkHZPfQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1q21Ad-00FJUA-2J; Thu, 25 May 2023 02:57:43 +0000 Received: from bg4.exmail.qq.com ([43.154.54.12]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1q21AY-00FJSC-2t for linux-arm-kernel@lists.infradead.org; Thu, 25 May 2023 02:57:41 +0000 X-QQ-mid: bizesmtp63t1684983430tny3hp8d Received: from localhost.localdomain ( [221.226.144.218]) by bizesmtp.qq.com (ESMTP) with id ; Thu, 25 May 2023 10:57:08 +0800 (CST) X-QQ-SSF: 01200000000000303000000A0000000 X-QQ-FEAT: Q40xx9djesRnvDjNn8FEKK30CJtqMZLJIor2xKhK5CaxBB9mt0DXuMlLPYqPB XwU+t+ZR2ppVV1gWFz/3tdYgXvOqNyx2sj1tDRvmvPJSxWf9mmIV9/kKzgpyLRFF6pAKMpv dB0eKB2SSKXJh3FTbdTch41OWKYEWPRex1/kKW7pZjOibMJK72PzfbAwoYu0dNrdZKe15AK dTMzuKSl3z/YxPs5jNKNOm7HuebEE7nCnLbDXy5qf6ij3OKz81p/au9NFgD8Zl6iWkiPEDq GcW6VwoPGDF1TVFO2o+HzRuvCW71F1mCYe/bYfS8TJHE/z7e4lhSzEBaQvPwUFBEwu87AX9 fT3d27frdI1M3q8tgGm3Jw0nwmLKBJdf6njsyPLQRlj+Yw3Q4gHY9U0yQCyzavwq1c5rNIA X-QQ-GoodBg: 0 X-BIZMAIL-ID: 4042248179779979880 From: Song Shuai To: catalin.marinas@arm.com, will@kernel.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, chris@zankel.net, jcmvbkbc@gmail.com, songshuaishuai@tinylab.org, steven.price@arm.com, vincenzo.frascino@arm.com, pcc@google.com, wangxiang@cdjrlc.com, ajones@ventanamicro.com, conor.dooley@microchip.com, jeeheng.sia@starfivetech.com, leyfoon.tan@starfivetech.com Cc: linux@armlinux.org.uk, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Subject: [PATCH 2/4] arm64: hibernate: remove WARN_ON in save_processor_state Date: Thu, 25 May 2023 10:55:53 +0800 Message-Id: <20230525025555.24104-3-songshuaishuai@tinylab.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20230525025555.24104-1-songshuaishuai@tinylab.org> References: <20230525025555.24104-1-songshuaishuai@tinylab.org> MIME-Version: 1.0 X-QQ-SENDSIZE: 520 Feedback-ID: bizesmtp:tinylab.org:qybglogicsvrgz:qybglogicsvrgz5a-3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230524_195739_260982_B7CC8FD5 X-CRM114-Status: UNSURE ( 8.27 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org During hibernation or restoration, freeze_secondary_cpus checks num_online_cpus via BUG_ON, and the subsequent save_processor_state also does the checking with WARN_ON. So remove the unnecessary checking in save_processor_state. Signed-off-by: Song Shuai --- arch/arm64/kernel/hibernate.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/arm64/kernel/hibernate.c b/arch/arm64/kernel/hibernate.c index 788597a6b6a2..02870beb271e 100644 --- a/arch/arm64/kernel/hibernate.c +++ b/arch/arm64/kernel/hibernate.c @@ -99,7 +99,6 @@ int pfn_is_nosave(unsigned long pfn) void notrace save_processor_state(void) { - WARN_ON(num_online_cpus() != 1); } void notrace restore_processor_state(void)