diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2016-07-04 17:39:23 +0900 |
|---|---|---|
| committer | Runmin Wang <runminw@codeaurora.org> | 2017-01-23 11:23:37 -0800 |
| commit | 1cc869442a204358ddb29d4c58cc4fd84847fe85 (patch) | |
| tree | c344875780e44935b1b0a58a44f130d570ac6e61 /include/linux | |
| parent | 8fa25e8c0e83a27601cb2e4c30998e923e1bd96d (diff) | |
genirq: Introduce IRQD_AFFINITY_MANAGED flag
Interupts marked with this flag are excluded from user space interrupt
affinity changes. Contrary to the IRQ_NO_BALANCING flag, the kernel internal
affinity mechanism is not blocked.
This flag will be used for multi-queue device interrupts.
Change-Id: I204c49bb1c8ce87fbcd163119093163b120bfe83
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Christoph Hellwig <hch@lst.de>
Cc: linux-block@vger.kernel.org
Cc: linux-pci@vger.kernel.org
Cc: linux-nvme@lists.infradead.org
Cc: axboe@fb.com
Cc: agordeev@redhat.com
Link: http://lkml.kernel.org/r/1467621574-8277-3-git-send-email-hch@lst.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Git-commit: 9c2555835bb3d34dfac52a0be943dcc4bedd650f
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
[runminw@codeaurora.org: resolve trivial merge conflicts]
Signed-off-by: Runmin Wang <runminw@codeaurora.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/irq.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h index 3c1c96786248..de7f8d306feb 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -191,6 +191,7 @@ struct irq_data { * IRQD_IRQ_INPROGRESS - In progress state of the interrupt * IRQD_WAKEUP_ARMED - Wakeup mode armed * IRQD_FORWARDED_TO_VCPU - The interrupt is forwarded to a VCPU + * IRQD_AFFINITY_MANAGED - Affinity is auto-managed by the kernel */ enum { IRQD_TRIGGER_MASK = 0xf, @@ -206,6 +207,7 @@ enum { IRQD_IRQ_INPROGRESS = (1 << 18), IRQD_WAKEUP_ARMED = (1 << 19), IRQD_FORWARDED_TO_VCPU = (1 << 20), + IRQD_AFFINITY_MANAGED = (1 << 21), }; #define __irqd_to_state(d) ((d)->common->state_use_accessors) @@ -299,6 +301,11 @@ static inline void irqd_clr_forwarded_to_vcpu(struct irq_data *d) __irqd_to_state(d) &= ~IRQD_FORWARDED_TO_VCPU; } +static inline bool irqd_affinity_is_managed(struct irq_data *d) +{ + return __irqd_to_state(d) & IRQD_AFFINITY_MANAGED; +} + static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d) { return d->hwirq; |