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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2016-09-06 19:04:38 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-09-19 21:44:26 +0200 |
| commit | 657ebf7a2354f39cc7d3f4e64ee49dbf1c3cae4f (patch) | |
| tree | ff5fd53e135c0e8209819a7c440c9cd3b843f111 | |
| parent | c23a7266e6599e74305cc5b790f93398bb212380 (diff) | |
| download | lwn-657ebf7a2354f39cc7d3f4e64ee49dbf1c3cae4f.tar.gz lwn-657ebf7a2354f39cc7d3f4e64ee49dbf1c3cae4f.zip | |
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 <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.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | arch/arm/mach-shmobile/platsmp-scu.c | 26 | ||||
| -rw-r--r-- | include/linux/cpuhotplug.h | 1 |
2 files changed, 9 insertions, 18 deletions
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 diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h index 0da071ff36d2..008eed0c0787 100644 --- a/include/linux/cpuhotplug.h +++ b/include/linux/cpuhotplug.h @@ -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, |