HACK: ARM: smp: Check for cpu_die callback to detect hotplug support

takondra · takondra · commit 092cbfa0a4a1 · 2013-10-10T01:01:39.000+03:00
OMAP doesn't have cpu_kill callback implemented, but it effectively
disables CPU in cpu_die callback. Change detection criteria to
be able to execute kexec.

Signed-off-by: Taras Kondratiuk &lt;taras.kondratiuk@linaro.org&gt;
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
@@ -149,7 +149,7 @@ int boot_secondary(unsigned int cpu, struct task_struct *idle)
 int platform_can_cpu_hotplug(void)
 {
 #ifdef CONFIG_HOTPLUG_CPU
-	if (smp_ops.cpu_kill)
+	if (smp_ops.cpu_die)
 		return 1;
 #endif
 

Original file line number	Diff line number	Diff line change
`@@ -149,7 +149,7 @@ int boot_secondary(unsigned int cpu, struct task_struct *idle)`
`149`	`149`	`int platform_can_cpu_hotplug(void)`
`150`	`150`	`{`
`151`	`151`	`#ifdef CONFIG_HOTPLUG_CPU`
`152`		`- if (smp_ops.cpu_kill)`
	`152`	`+ if (smp_ops.cpu_die)`
`153`	`153`	`return 1;`
`154`	`154`	`#endif`
`155`	`155`