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| author |   Qais Yousef <qais.yousef@imgtec.com> | 2015-12-08 13:20:17 +0000 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2016-02-25 10:56:55 +0100 |
| commit | 955bfe5912e7839abcc83694f06867535487404b (patch) | |
| tree | 50814a31e1ac2d9370249ab786aa11043b796851 /include/linux/irq.h | |
| parent | genirq: Add GENERIC_IRQ_IPI Kconfig symbol (diff) | |
| download | linux-dev-955bfe5912e7839abcc83694f06867535487404b.tar.xz linux-dev-955bfe5912e7839abcc83694f06867535487404b.zip | |
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@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.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, 3 insertions, 1 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h index 3c1c96786248..0817afd0d719 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 { |