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hotplug: add cpu hotplug support for m8b

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PD#141217: add cpu hotplug support for m8b
1) enable CONFIG_AMLOGIC_CPU_HOTPLUG
2) clusterID of M8b is 2

Change-Id: I8f6dc6ced430364beb5eb82f20cb7034eb714eb0
Signed-off-by: Jianxin Pan <jianxin.pan@amlogic.com>
This commit is contained in:
Jianxin Pan
2017-04-12 17:03:53 +08:00
parent c640050156
commit a462a4f47a
2 changed files with 10 additions and 9 deletions
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1
arch/arm/configs/meson32_defconfig
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@@ -56,6 +56,7 @@ CONFIG_AMLOGIC_CLK=y
CONFIG_AMLOGIC_M8B_CLK=y
CONFIG_AMLOGIC_CRYPTO=y
CONFIG_AMLOGIC_CRYPTO_BLKMV=y
CONFIG_AMLOGIC_CPU_HOTPLUG=y
CONFIG_AMLOGIC_MMC=y
CONFIG_AMLOGIC_M8B_MMC=y
CONFIG_DEVTMPFS=y

18
drivers/amlogic/cpu_hotplug/cpu_hotplug.c
View File

@@ -62,12 +62,13 @@ int cpu_hotplug_cpumask_init(void)
for (cpu = 0; cpu < num_possible_cpus(); cpu++) {
clstr = topology_physical_package_id(cpu);
if (clstr >= 0 && clstr < MAX_CLUSTRS) {
cpumask_set_cpu(cpu, &hpg.cpumask[clstr]);
if (hpg.clusters < clstr + 1)
hpg.clusters = clstr + 1;
hpg.cpunum[clstr]++;
}
if (clstr < 0)
continue;
clstr &= (MAX_CLUSTRS - 1);
cpumask_set_cpu(cpu, &hpg.cpumask[clstr]);
if (hpg.clusters < clstr + 1)
hpg.clusters = clstr + 1;
hpg.cpunum[clstr]++;
}
return 0;
}
@@ -301,9 +302,8 @@ static int __init cpu_hotplug_init(void)
mutex_unlock(&hpg.mutex);
wake_up_process(hpg.hotplug_thread);
if (cpufreq_global_kobject)
err = sysfs_create_file(cpufreq_global_kobject,
&hotplug_max_cpus.attr);
err = sysfs_create_file(&cpu_subsys.dev_root->kobj,
&hotplug_max_cpus.attr);
return 0;
}