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/irqdesc.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/irqdesc.h')
-rw-r--r-- | include/linux/irqdesc.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index dcca77c4b9d2..b51beebf9804 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -66,6 +66,7 @@ struct irq_desc { int threads_handled_last; raw_spinlock_t lock; struct cpumask *percpu_enabled; + const struct cpumask *percpu_affinity; #ifdef CONFIG_SMP const struct cpumask *affinity_hint; struct irq_affinity_notify *affinity_notify; |