Commit 955bfe59 authored by Qais Yousef's avatar Qais Yousef Committed by Thomas Gleixner

genirq: Add an extra comment about the use of affinity in irq_common_data

Affinity will have dual meaning depends on the type of the irq. If it is
a normal irq, it'll have the standard affinity meaning.

If it is an IPI, it will hold the mask of the cpus to which an IPI can be
sent.
Signed-off-by: default avatarQais Yousef <qais.yousef@imgtec.com>
Cc: <jason@lakedaemon.net>
Cc: <marc.zyngier@arm.com>
Cc: <jiang.liu@linux.intel.com>
Cc: <ralf@linux-mips.org>
Cc: <linux-mips@linux-mips.org>
Cc: <lisa.parratt@imgtec.com>
Cc: Qais Yousef <qsyousef@gmail.com>
Link: http://lkml.kernel.org/r/1449580830-23652-7-git-send-email-qais.yousef@imgtec.comSigned-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 379b6564
...@@ -133,7 +133,9 @@ struct irq_domain; ...@@ -133,7 +133,9 @@ struct irq_domain;
* Use accessor functions to deal with it * Use accessor functions to deal with it
* @node: node index useful for balancing * @node: node index useful for balancing
* @handler_data: per-IRQ data for the irq_chip methods * @handler_data: per-IRQ data for the irq_chip methods
* @affinity: IRQ affinity on SMP * @affinity: IRQ affinity on SMP. If this is an IPI
* related irq, then this is the mask of the
* CPUs to which an IPI can be sent.
* @msi_desc: MSI descriptor * @msi_desc: MSI descriptor
*/ */
struct irq_common_data { struct irq_common_data {
......
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