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ARM: shmobile: Introduce shmobile_smp_cpu_disable() 

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@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Magnus Damm 2013-08-08 07:13:30 +09:00 committed by Simon Horman
parent cde214a890
commit 5c4dfcd663
2 changed files with 8 additions and 0 deletions
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1
arch/arm/mach-shmobile/include/mach/common.h
View File

@ -13,6 +13,7 @@ extern void shmobile_smp_boot(void);
extern void shmobile_smp_sleep(void); extern void shmobile_smp_sleep(void);
extern void shmobile_smp_hook(unsigned int cpu, unsigned long fn, extern void shmobile_smp_hook(unsigned int cpu, unsigned long fn,
unsigned long arg); unsigned long arg);
extern int shmobile_smp_cpu_disable(unsigned int cpu);
extern void shmobile_boot_scu(void); extern void shmobile_boot_scu(void);
extern void shmobile_smp_scu_prepare_cpus(unsigned int max_cpus); extern void shmobile_smp_scu_prepare_cpus(unsigned int max_cpus);
extern int shmobile_smp_scu_boot_secondary(unsigned int cpu, extern int shmobile_smp_scu_boot_secondary(unsigned int cpu,

7
arch/arm/mach-shmobile/platsmp.c
View File

@ -44,3 +44,10 @@ void shmobile_smp_hook(unsigned int cpu, unsigned long fn, unsigned long arg)
shmobile_smp_arg[cpu] = arg; shmobile_smp_arg[cpu] = arg;
flush_cache_all(); flush_cache_all();
} }
#ifdef CONFIG_HOTPLUG_CPU
int shmobile_smp_cpu_disable(unsigned int cpu)
{
return 0; /* Hotplug of any CPU is supported */
}
#endif