diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2008-11-28 10:11:27 +1100 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2008-11-28 10:11:27 +1100 |
| commit | 76a02558624abd32b7265384b59f319f29f8a0b8 (patch) | |
| tree | 0f7937abbae2490aceadb1fe035bd0b8d5cf5b97 /kernel/irq/migration.c | |
| parent | 1c7a8c5b49685cd90ae7f22622b145a770ac11f0 (diff) | |
genirq: keep affinities set from userspace across free/request_irq()
commit f6d87f4bd259cf33e092cd1a8fde05f291c47af1
Author: Thomas Gleixner <tglx@linutronix.de>
Date: Fri Nov 7 13:18:30 2008 +0100
genirq: keep affinities set from userspace across free/request_irq()
Impact: preserve user-modified affinities on interrupts
Kumar Galak noticed that commit
18404756765c713a0be4eb1082920c04822ce588 (genirq: Expose default irq
affinity mask (take 3))
overrides an already set affinity setting across a free /
request_irq(). Happens e.g. with ifdown/ifup of a network device.
Change the logic to mark the affinities as set and keep them
intact. This also fixes the unlocked access to irq_desc in
irq_select_affinity() when called from irq_affinity_proc_write()
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/irq/migration.c')
| -rw-r--r-- | kernel/irq/migration.c | 11 |
1 files changed, 0 insertions, 11 deletions
diff --git a/kernel/irq/migration.c b/kernel/irq/migration.c index 90b920d3f52b..9db681d95814 100644 --- a/kernel/irq/migration.c +++ b/kernel/irq/migration.c @@ -1,17 +1,6 @@ #include <linux/irq.h> -void set_pending_irq(unsigned int irq, cpumask_t mask) -{ - struct irq_desc *desc = irq_to_desc(irq); - unsigned long flags; - - spin_lock_irqsave(&desc->lock, flags); - desc->status |= IRQ_MOVE_PENDING; - desc->pending_mask = mask; - spin_unlock_irqrestore(&desc->lock, flags); -} - void move_masked_irq(int irq) { struct irq_desc *desc = irq_to_desc(irq); |