Message ID | 5ef67c263f7602d0accfe7b50805a7eb576618c0.1675461757.git.jpoimboe@kernel.org |
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State | New |
Headers | show
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b=Z3i2Svvz2DgckJMayCk0gnjzplyWv/xWz4lNF/4iQturQRPy9bpRXkh6LHKDE0VTj hLT80F7fD7LkSFDdo5XVfokUo2iYIZIkb6RfMG4ZOdTlIUUKJz7jxdNBXJhwhDJi7k TtZBctqmDSxTE/uROnYS1JbhnFDadTX80kk2WDbnIWma9DW9nR8COcEuQ+AJZyfnGM 43FlnaF2H3EggZw3KAqoB2U390Knt/al5l2dzI1AD5mqnBV8xoNTaf+0YclHPcnzYS 7yH77W1niwbTQwyCnpJgLEmtK0D79wQ1JvuUdroyJZVYC4GQi6U4CJfIOFQxXXFLMP YxbeNerpjAahQ== From: Josh Poimboeuf <jpoimboe@kernel.org> To: linux-kernel@vger.kernel.org Cc: jgross@suse.com, richard.henderson@linaro.org, ink@jurassic.park.msu.ru, mattst88@gmail.com, linux-alpha@vger.kernel.org, linux@armlinux.org.uk, linux-arm-kernel@lists.infradead.org, catalin.marinas@arm.com, will@kernel.org, guoren@kernel.org, linux-csky@vger.kernel.org, linux-ia64@vger.kernel.org, chenhuacai@kernel.org, kernel@xen0n.name, loongarch@lists.linux.dev, f.fainelli@gmail.com, bcm-kernel-feedback-list@broadcom.com, tsbogend@alpha.franken.de, linux-mips@vger.kernel.org, jiaxun.yang@flygoat.com, mpe@ellerman.id.au, npiggin@gmail.com, christophe.leroy@csgroup.eu, linuxppc-dev@lists.ozlabs.org, ysato@users.sourceforge.jp, dalias@libc.org, linux-sh@vger.kernel.org, davem@davemloft.net, sparclinux@vger.kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, chris@zankel.net, jcmvbkbc@gmail.com, linux-xtensa@linux-xtensa.org, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com, paulmck@kernel.org Subject: [PATCH 03/22] arm/cpu: Make sure arch_cpu_idle_dead() doesn't return Date: Fri, 3 Feb 2023 14:05:12 -0800 Message-Id: <5ef67c263f7602d0accfe7b50805a7eb576618c0.1675461757.git.jpoimboe@kernel.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <cover.1675461757.git.jpoimboe@kernel.org> References: <cover.1675461757.git.jpoimboe@kernel.org> MIME-Version: 1.0 Content-type: text/plain Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: <sparclinux.vger.kernel.org> X-Mailing-List: sparclinux@vger.kernel.org |
Series |
cpu,sched: Mark arch_cpu_idle_dead() __noreturn
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expand
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diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index 0b8c25763adc..adcd417c526b 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"); + + BUG(); } #endif /* CONFIG_HOTPLUG_CPU */
arch_cpu_idle_dead() doesn't return. Make that more explicit with a BUG(). BUG() is preferable to unreachable() because BUG() is a more explicit failure mode and avoids undefined behavior like falling off the edge of the function into whatever code happens to be next. Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> --- arch/arm/kernel/smp.c | 2 ++ 1 file changed, 2 insertions(+)