Thread (58 messages) 58 messages, 8 authors, 2023-03-02
STALE1182d

[PATCH v2.1 03/24] arm/cpu: Add unreachable() to arch_cpu_idle_dead()

From: Josh Poimboeuf <jpoimboe@kernel.org>
Date: 2023-02-16 18:39:04
Also in: linux-alpha, linux-arm-kernel, linux-mips, linux-sh, lkml, loongarch, sparclinux
Subsystem: arm port, the rest · Maintainers: Russell King, Linus Torvalds

arch_cpu_idle_dead() doesn't return.  Make that visible to the compiler
with an unreachable() code annotation.

Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
---
 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 */
 
-- 
2.39.1
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