diff options
| author | Marc Zyngier <marc.zyngier@arm.com> | 2016-04-11 09:57:52 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-05-02 13:42:51 +0200 |
| commit | 222df54fd8b7641dcc81476f157806bb3144ee1d (patch) | |
| tree | 2153984fd6a2acc0f70022e95ca7f1f2a66dc098 /include/linux/irq.h | |
| parent | 651e8b54abdeeaa36f5f54ffa05c18707a3cc1d0 (diff) | |
genirq: Allow the affinity of a percpu interrupt to be set/retrieved
In order to prepare the genirq layer for the concept of partitionned
percpu interrupts, let's allow an affinity to be associated with
such an interrupt. We introduce:
- irq_set_percpu_devid_partition: flag an interrupt as a percpu-devid
interrupt, and associate it with an affinity
- irq_get_percpu_devid_partition: allow the affinity of that interrupt
to be retrieved.
This will allow a driver to discover which CPUs the per-cpu interrupt
can actually fire on.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: devicetree@vger.kernel.org
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Link: http://lkml.kernel.org/r/1460365075-7316-3-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/irq.h')
| -rw-r--r-- | include/linux/irq.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h index c4de62348ff2..4d758a7c604a 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -530,6 +530,10 @@ static inline void irq_set_chip_and_handler(unsigned int irq, struct irq_chip *c } extern int irq_set_percpu_devid(unsigned int irq); +extern int irq_set_percpu_devid_partition(unsigned int irq, + const struct cpumask *affinity); +extern int irq_get_percpu_devid_partition(unsigned int irq, + struct cpumask *affinity); extern void __irq_set_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained, |