Commit-ID: 955bfe5912e7839abcc83694f06867535487404b Gitweb: http://git.kernel.org/tip/955bfe5912e7839abcc83694f06867535487404b Author: Qais Yousef <qais.yousef@xxxxxxxxxx> AuthorDate: Tue, 8 Dec 2015 13:20:17 +0000 Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx> CommitDate: Thu, 25 Feb 2016 10:56:55 +0100 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: Qais Yousef <qais.yousef@xxxxxxxxxx> Cc: <jason@xxxxxxxxxxxxxx> Cc: <marc.zyngier@xxxxxxx> Cc: <jiang.liu@xxxxxxxxxxxxxxx> Cc: <ralf@xxxxxxxxxxxxxx> Cc: <linux-mips@xxxxxxxxxxxxxx> Cc: <lisa.parratt@xxxxxxxxxx> Cc: Qais Yousef <qsyousef@xxxxxxxxx> Link: http://lkml.kernel.org/r/1449580830-23652-7-git-send-email-qais.yousef@xxxxxxxxxx Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> --- include/linux/irq.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/include/linux/irq.h b/include/linux/irq.h index 3c1c967..0817afd 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -133,7 +133,9 @@ struct irq_domain; * Use accessor functions to deal with it * @node: node index useful for balancing * @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 */ struct irq_common_data {
