From patchwork Thu Feb 16 18:38:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Josh Poimboeuf X-Patchwork-Id: 1743927 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=2404:9400:2:0:216:3eff:fee1:b9f1; helo=lists.ozlabs.org; envelope-from=linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=pzcnRjPV; dkim-atps=neutral Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2404:9400:2:0:216:3eff:fee1:b9f1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4PHkHk4ntDz23r4 for ; 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Fri, 17 Feb 2023 05:38:57 +1100 (AEDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 3778962068; Thu, 16 Feb 2023 18:38:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 56CB1C433A1; Thu, 16 Feb 2023 18:38:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1676572735; bh=hl1r8WrgBVR11XLM9TAiwDCXOTiVcQCDtFTYvOcE4vk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=pzcnRjPVAqaK3xKlZe1yzpskS9/WG+OMTloaSFKzBMCxOCkoRpNuoRNYa/3zPKJnz 6X0jJD8EJrjs7EW5Q3nhsFDWki1qsGGw5El1PvFSJCXlOCmUN+Sd3mN6zTUEUZzc4/ mNsCR3739yEFXFsyMHHJMQQvHiwVXyBZTBiMAN1UkqOhmnVWUd9WCzEFvocuiDiV1c Eo7Y6nPnKYPTibCQ+j4JWOC/6OWWtqMh3gcXtNFiAG9L8vY3DcfS2b9I9DQMeEJSOl hm19TO6FpEAODpm1nGfmYEAKY8rl2vEswAXObCCmDbCHiycLI4GP13uQYuypXaWSs7 6xGJABLDdsOig== Date: Thu, 16 Feb 2023 10:38:51 -0800 From: Josh Poimboeuf To: "Russell King (Oracle)" Subject: [PATCH v2.1 03/24] arm/cpu: Add unreachable() to arch_cpu_idle_dead() Message-ID: <20230216183851.s5bnvniomq44rytu@treble> References: <20230214183926.46trlpdror3v5sk5@treble> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: 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: juri.lelli@redhat.com, dalias@libc.org, linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, peterz@infradead.org, catalin.marinas@arm.com, dave.hansen@linux.intel.com, x86@kernel.org, jiaxun.yang@flygoat.com, linux-mips@vger.kernel.org, bsegall@google.com, jcmvbkbc@gmail.com, guoren@kernel.org, hpa@zytor.com, sparclinux@vger.kernel.org, kernel@xen0n.name, will@kernel.org, vschneid@redhat.com, f.fainelli@gmail.com, vincent.guittot@linaro.org, ysato@users.sourceforge.jp, chenhuacai@kernel.org, linux-csky@vger.kernel.org, mingo@redhat.com, bcm-kernel-feedback-list@broadcom.com, mgorman@suse.de, mattst88@gmail.com, linux-xtensa@linux-xtensa.org, paulmck@kernel.org, richard.henderson@linaro.org, npiggin@gmail.com, ink@jurassic.park.msu.ru, rostedt@goodmis.org, loongarch@lists.linux.dev, tglx@linutronix.de, dietmar.eggemann@arm.com, linux-arm-kernel@lists.infradead.org, jgross@suse.com, chris@zankel.net, tsbogend@alpha.franken.de, bristot@redhat.com, linux-kernel@vger.kernel.org, lin ux-alpha@vger.kernel.org, bp@alien8.de, linuxppc-dev@lists.ozlabs.org, davem@davemloft.net Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" arch_cpu_idle_dead() doesn't return. Make that visible to the compiler with an unreachable() code annotation. Signed-off-by: Josh Poimboeuf --- arch/arm/kernel/smp.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index 0b8c25763adc..441ea5cff390 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -382,6 +382,8 @@ void arch_cpu_idle_dead(void) : "r" (task_stack_page(current) + THREAD_SIZE - 8), "r" (current) : "r0"); + + unreachable(); } #endif /* CONFIG_HOTPLUG_CPU */