aboutsummaryrefslogtreecommitdiffstats
path: root/kernel
diff options
context:
space:
mode:
authorDavid Daney <ddaney@caviumnetworks.com>2011-03-25 12:38:49 -0700
committerThomas Gleixner <tglx@linutronix.de>2011-03-27 17:45:58 +0200
commit0fdb4b259ed3e91b687ac26848202f5e7c217e62 (patch)
tree52503c0c5c35f95ab88a9867fc46c43fc7d9c200 /kernel
parent801a0e9ae36e9b487092e31699d28c0b9a21ad52 (diff)
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.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index 0a890bdd9c63..44b16a1ecd9a 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);
+ }
+}

Privacy Policy