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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2005-11-02 22:24:33 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2005-11-02 22:24:33 +0000
commita054a811597a17ffbe92bc4db04a4dc2f1b1ea55 (patch)
treeb600081d964d6fe7cc1cfe2669a739da0e1743f4 /arch/arm/kernel/process.c
parent273c2cdb2b6d6743d85ddbde82e71f8adbf5bf10 (diff)
[ARM SMP] Add hotplug CPU infrastructure
This patch adds the infrastructure to support hotplug CPU on ARM platforms. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/kernel/process.c')
-rw-r--r--arch/arm/kernel/process.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 409db6d5ec9..ba298277bec 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -26,6 +26,7 @@
#include <linux/interrupt.h>
#include <linux/kallsyms.h>
#include <linux/init.h>
+#include <linux/cpu.h>
#include <asm/system.h>
#include <asm/io.h>
@@ -105,6 +106,14 @@ void cpu_idle(void)
/* endless idle loop with no priority at all */
while (1) {
void (*idle)(void) = pm_idle;
+
+#ifdef CONFIG_HOTPLUG_CPU
+ if (cpu_is_offline(smp_processor_id())) {
+ leds_event(led_idle_start);
+ cpu_die();
+ }
+#endif
+
if (!idle)
idle = default_idle;
preempt_disable();