From 657ebf7a2354f39cc7d3f4e64ee49dbf1c3cae4f Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Tue, 6 Sep 2016 19:04:38 +0200 Subject: 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: Sebastian Andrzej Siewior Cc: linux-sh@vger.kernel.org Cc: Peter Zijlstra Cc: Magnus Damm Cc: Simon Horman Cc: rt@linutronix.de Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/20160906170457.32393-3-bigeasy@linutronix.de Signed-off-by: Thomas Gleixner --- arch/arm/mach-shmobile/platsmp-scu.c | 26 ++++++++------------------ 1 file changed, 8 insertions(+), 18 deletions(-) (limited to 'arch/arm/mach-shmobile/platsmp-scu.c') diff --git a/arch/arm/mach-shmobile/platsmp-scu.c b/arch/arm/mach-shmobile/platsmp-scu.c index 8d478f1da265..d1ecaf37d142 100644 --- a/arch/arm/mach-shmobile/platsmp-scu.c +++ b/arch/arm/mach-shmobile/platsmp-scu.c @@ -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 -- cgit v1.2.3