[PATCH 01/05] ARM: shmobile: Introduce shmobile_smp_cpu_disable()
Magnus Damm
magnus.damm at gmail.com
Wed Aug 7 18:13:30 EDT 2013
From: Magnus Damm <damm at opensource.se>
Introduce the shared CPU Hotplug function shmobile_smp_cpu_disable()
for mach-shmobile. It is useful for the case when all CPUs may be
hotplugged, including CPU 0.
Signed-off-by: Magnus Damm <damm at opensource.se>
---
arch/arm/mach-shmobile/include/mach/common.h | 1 +
arch/arm/mach-shmobile/platsmp.c | 7 +++++++
2 files changed, 8 insertions(+)
--- 0009/arch/arm/mach-shmobile/include/mach/common.h
+++ work/arch/arm/mach-shmobile/include/mach/common.h 2013-07-29 22:19:44.000000000 +0900
@@ -17,6 +17,7 @@ extern unsigned long shmobile_smp_arg[];
extern unsigned long shmobile_smp_mpidr[];
extern void shmobile_smp_hook(unsigned int cpu, unsigned long fn,
unsigned long arg);
+extern int shmobile_smp_cpu_disable(unsigned int cpu);
extern void shmobile_boot_scu(void);
extern void shmobile_smp_scu_prepare_cpus(unsigned int max_cpus);
extern int shmobile_smp_scu_boot_secondary(unsigned int cpu,
--- 0009/arch/arm/mach-shmobile/platsmp.c
+++ work/arch/arm/mach-shmobile/platsmp.c 2013-07-29 22:19:29.000000000 +0900
@@ -40,3 +40,10 @@ void shmobile_smp_hook(unsigned int cpu,
shmobile_smp_arg[cpu] = arg;
flush_cache_all();
}
+
+#ifdef CONFIG_HOTPLUG_CPU
+int shmobile_smp_cpu_disable(unsigned int cpu)
+{
+ return 0; /* Hotplug of any CPU is supported */
+}
+#endif
More information about the linux-arm-kernel
mailing list