Commit 657ebf7a authored by Sebastian Andrzej Siewior's avatar Sebastian Andrzej Siewior Committed by Thomas Gleixner

ARM/shmobile: Convert to hotplug state machine

Install the callbacks via the state machine so the old notifier based
cpuhotplug infrastructure can be removed.
Signed-off-by: default avatarSebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: linux-sh@vger.kernel.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Simon Horman <horms@verge.net.au>
Cc: rt@linutronix.de
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/20160906170457.32393-3-bigeasy@linutronix.deSigned-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent c23a7266
......@@ -21,26 +21,14 @@
static phys_addr_t shmobile_scu_base_phys;
static void __iomem *shmobile_scu_base;
static int shmobile_smp_scu_notifier_call(struct notifier_block *nfb,
unsigned long action, void *hcpu)
static int shmobile_scu_cpu_prepare(unsigned int cpu)
{
unsigned int cpu = (long)hcpu;
switch (action) {
case CPU_UP_PREPARE:
/* For this particular CPU register SCU SMP boot vector */
shmobile_smp_hook(cpu, virt_to_phys(shmobile_boot_scu),
shmobile_scu_base_phys);
break;
};
return NOTIFY_OK;
/* For this particular CPU register SCU SMP boot vector */
shmobile_smp_hook(cpu, virt_to_phys(shmobile_boot_scu),
shmobile_scu_base_phys);
return 0;
}
static struct notifier_block shmobile_smp_scu_notifier = {
.notifier_call = shmobile_smp_scu_notifier_call,
};
void __init shmobile_smp_scu_prepare_cpus(phys_addr_t scu_base_phys,
unsigned int max_cpus)
{
......@@ -54,7 +42,9 @@ void __init shmobile_smp_scu_prepare_cpus(phys_addr_t scu_base_phys,
scu_power_mode(shmobile_scu_base, SCU_PM_NORMAL);
/* Use CPU notifier for reset vector control */
register_cpu_notifier(&shmobile_smp_scu_notifier);
cpuhp_setup_state_nocalls(CPUHP_ARM_SHMOBILE_SCU_PREPARE,
"arm/shmobile-scu:prepare",
shmobile_scu_cpu_prepare, NULL);
}
#ifdef CONFIG_HOTPLUG_CPU
......
......@@ -35,6 +35,7 @@ enum cpuhp_state {
CPUHP_POWERPC_PMAC_PREPARE,
CPUHP_POWERPC_MMU_CTX_PREPARE,
CPUHP_NOTIFY_PREPARE,
CPUHP_ARM_SHMOBILE_SCU_PREPARE,
CPUHP_TIMERS_DEAD,
CPUHP_BRINGUP_CPU,
CPUHP_AP_IDLE_DEAD,
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment