diff options
| author |   Thomas Gleixner <tglx@linutronix.de> | 2017-06-20 01:37:23 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-06-22 18:21:15 +0200 |
| commit | 2e051552df69af6d134c2592d0d6f1ac80f01190 (patch) | |
| tree | 978ded6acb4983f52427e4fc38a3b12ffbb65467 /kernel/irq | |
| parent | genirq: Rename setup_affinity() to irq_setup_affinity() (diff) | |
| download | wireguard-linux-2e051552df69af6d134c2592d0d6f1ac80f01190.tar.xz wireguard-linux-2e051552df69af6d134c2592d0d6f1ac80f01190.zip | |
genirq: Move initial affinity setup to irq_startup()
The startup vs. setaffinity ordering of interrupts depends on the
IRQF_NOAUTOEN flag. Chained interrupts are not getting any affinity
assignment at all.
A regular interrupt is started up and then the affinity is set. A
IRQF_NOAUTOEN marked interrupt is not started up, but the affinity is set
nevertheless.
Move the affinity setup to startup_irq() so the ordering is always the same
and chained interrupts get the proper default affinity assigned as well.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Keith Busch <keith.busch@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Christoph Hellwig <hch@lst.de>
Link: http://lkml.kernel.org/r/20170619235445.020534783@linutronix.de
Diffstat (limited to 'kernel/irq')
| -rw-r--r-- | kernel/irq/chip.c | 2 | ||||
| -rw-r--r-- | kernel/irq/manage.c | 15 |
2 files changed, 8 insertions, 9 deletions
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index bc1331f84fb5..e290d73b88e2 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -213,6 +213,8 @@ int irq_startup(struct irq_desc *desc, bool resend) irq_enable(desc); } irq_state_set_started(desc); + /* Set default affinity mask once everything is setup */ + irq_setup_affinity(desc); } if (resend) diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index 907fb791ff63..1e283073cecc 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -1327,6 +1327,12 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new) if (new->flags & IRQF_ONESHOT) desc->istate |= IRQS_ONESHOT; + /* Exclude IRQ from balancing if requested */ + if (new->flags & IRQF_NOBALANCING) { + irq_settings_set_no_balancing(desc); + irqd_set(&desc->irq_data, IRQD_NO_BALANCING); + } + if (irq_settings_can_autoenable(desc)) { irq_startup(desc, true); } else { @@ -1341,15 +1347,6 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new) desc->depth = 1; } - /* Exclude IRQ from balancing if requested */ - if (new->flags & IRQF_NOBALANCING) { - irq_settings_set_no_balancing(desc); - irqd_set(&desc->irq_data, IRQD_NO_BALANCING); - } - - /* Set default affinity mask once everything is setup */ - irq_setup_affinity(desc); - } else if (new->flags & IRQF_TRIGGER_MASK) { unsigned int nmsk = new->flags & IRQF_TRIGGER_MASK; unsigned int omsk = irqd_get_trigger_type(&desc->irq_data); |