diff options
author | David Daney <ddaney@caviumnetworks.com> | 2011-03-25 12:38:49 -0700 |
---|---|---|
committer | Thomas Gleixner <tglx@linutronix.de> | 2011-03-27 17:45:58 +0200 |
commit | 0fdb4b259ed3e91b687ac26848202f5e7c217e62 (patch) | |
tree | 52503c0c5c35f95ab88a9867fc46c43fc7d9c200 /kernel | |
parent | 801a0e9ae36e9b487092e31699d28c0b9a21ad52 (diff) | |
download | kernel_samsung_tuna-0fdb4b259ed3e91b687ac26848202f5e7c217e62.zip kernel_samsung_tuna-0fdb4b259ed3e91b687ac26848202f5e7c217e62.tar.gz kernel_samsung_tuna-0fdb4b259ed3e91b687ac26848202f5e7c217e62.tar.bz2 |
genirq: Add chip hooks for taking CPUs on/off line.
[ tglx: Removed the enabled argument as this is now available in
irq_data ]
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Cc: ralf@linux-mips.org
LKML-Reference: <1301081931-11240-3-git-send-email-ddaney@caviumnetworks.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel')
-rw-r--r-- | kernel/irq/chip.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index 0a890bd..44b16a1 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -696,3 +696,61 @@ void irq_modify_status(unsigned int irq, unsigned long clr, unsigned long set) irq_put_desc_unlock(desc, flags); } + +/** + * irq_cpu_online - Invoke all irq_cpu_online functions. + * + * Iterate through all irqs and invoke the chip.irq_cpu_online() + * for each. + */ +void irq_cpu_online(void) +{ + struct irq_desc *desc; + struct irq_chip *chip; + unsigned long flags; + unsigned int irq; + + for_each_active_irq(irq) { + desc = irq_to_desc(irq); + if (!desc) + continue; + + raw_spin_lock_irqsave(&desc->lock, flags); + + chip = irq_data_get_irq_chip(&desc->irq_data); + + if (chip && chip->irq_cpu_online) + chip->irq_cpu_online(&desc->irq_data); + + raw_spin_unlock_irqrestore(&desc->lock, flags); + } +} + +/** + * irq_cpu_offline - Invoke all irq_cpu_offline functions. + * + * Iterate through all irqs and invoke the chip.irq_cpu_offline() + * for each. + */ +void irq_cpu_offline(void) +{ + struct irq_desc *desc; + struct irq_chip *chip; + unsigned long flags; + unsigned int irq; + + for_each_active_irq(irq) { + desc = irq_to_desc(irq); + if (!desc) + continue; + + raw_spin_lock_irqsave(&desc->lock, flags); + + chip = irq_data_get_irq_chip(&desc->irq_data); + + if (chip && chip->irq_cpu_offline) + chip->irq_cpu_offline(&desc->irq_data); + + raw_spin_unlock_irqrestore(&desc->lock, flags); + } +} |