diff options
Diffstat (limited to 'arch/arm/common')
| -rw-r--r-- | arch/arm/common/mcpm_entry.c | 15 | ||||
| -rw-r--r-- | arch/arm/common/mcpm_platsmp.c | 10 |
2 files changed, 25 insertions, 0 deletions
diff --git a/arch/arm/common/mcpm_entry.c b/arch/arm/common/mcpm_entry.c index 990250965f2c..6c03d0152e7f 100644 --- a/arch/arm/common/mcpm_entry.c +++ b/arch/arm/common/mcpm_entry.c @@ -90,6 +90,21 @@ void mcpm_cpu_power_down(void) BUG(); } +int mcpm_cpu_power_down_finish(unsigned int cpu, unsigned int cluster) +{ + int ret; + + if (WARN_ON_ONCE(!platform_ops || !platform_ops->power_down_finish)) + return -EUNATCH; + + ret = platform_ops->power_down_finish(cpu, cluster); + if (ret) + pr_warn("%s: cpu %u, cluster %u failed to power down (%d)\n", + __func__, cpu, cluster, ret); + + return ret; +} + void mcpm_cpu_suspend(u64 expected_residency) { phys_reset_t phys_reset; diff --git a/arch/arm/common/mcpm_platsmp.c b/arch/arm/common/mcpm_platsmp.c index c0c3cd799ccc..177251a4dd9a 100644 --- a/arch/arm/common/mcpm_platsmp.c +++ b/arch/arm/common/mcpm_platsmp.c @@ -56,6 +56,15 @@ static void mcpm_secondary_init(unsigned int cpu) #ifdef CONFIG_HOTPLUG_CPU +static int mcpm_cpu_kill(unsigned int cpu) +{ + unsigned int pcpu, pcluster; + + cpu_to_pcpu(cpu, &pcpu, &pcluster); + + return !mcpm_cpu_power_down_finish(pcpu, pcluster); +} + static int mcpm_cpu_disable(unsigned int cpu) { /* @@ -82,6 +91,7 @@ static struct smp_operations __initdata mcpm_smp_ops = { .smp_boot_secondary = mcpm_boot_secondary, .smp_secondary_init = mcpm_secondary_init, #ifdef CONFIG_HOTPLUG_CPU + .cpu_kill = mcpm_cpu_kill, .cpu_disable = mcpm_cpu_disable, .cpu_die = mcpm_cpu_die, #endif |