user/sven/linux.git/kernel/irq/migration.c, branch v4.4

genirq: Remove bogus restriction in irq_move_mask_irq()

2015-06-20T17:05:14Z

If an interrupt is marked with the no balancing flag, we still allow setting the affinity for such an interrupt from the kernel itself, but for interrupts which move the affinity from interrupt context via irq_move_mask_irq() this runs into a check for the no balancing flag, which in turn ends up with an endless storm of stack dumps because the move pending flag is not reset. Allow the move for interrupts which have the no balancing flag set and clear the move pending bit before checking for interrupts with the per cpu flag set. Reported-by: Sergey Senozhatsky Cc: Borislav Petkov Cc: Jiang Liu Link: http://lkml.kernel.org/r/alpine.DEB.2.11.1506201002570.4107@nanos Signed-off-by: Thomas Gleixner

genirq: Prevent crash in irq_move_irq()

2015-06-12T14:54:21Z

The functions irq_move_irq() and irq_move_masked_irq() expect that the caller passes the top-level irq_data to them when hierarchical irqdomains are enabled. But that's not true when called from apic_ack_edge(), which results in a null pointer dereference by idata->chip->irq_mask(idata). Instead of fixing callers to passing top-level irq_data, we rather change irq_move_irq()/irq_move_masked_irq() to accept any irq_data. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Bjorn Helgaas Cc: Benjamin Herrenschmidt Cc: Randy Dunlap Cc: Yinghai Lu Cc: Borislav Petkov Link: http://lkml.kernel.org/r/1433145945-789-3-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner

genirq: Introduce irq_do_set_affinity() to reduce duplicated code

2012-05-24T20:36:40Z

All invocations of chip->irq_set_affinity() are doing the same return value checks. Let them all use a common function. [ tglx: removed the silly likely while at it ] Signed-off-by: Jiang Liu Cc: Jiang Liu Cc: Keping Chen Link: http://lkml.kernel.org/r/1333120296-13563-3-git-send-email-jiang.liu@huawei.com Signed-off-by: Thomas Gleixner

genirq: Adjust irq thread affinity on IRQ_SET_MASK_OK_NOCOPY return value

2012-03-30T21:13:46Z

irq_move_masked_irq() checks the return code of chip->irq_set_affinity() only for 0, but IRQ_SET_MASK_OK_NOCOPY is also a valid return code, which is there to avoid a redundant copy of the cpumask. But in case of IRQ_SET_MASK_OK_NOCOPY we not only avoid the redundant copy, we also fail to adjust the thread affinity of an eventually threaded interrupt handler. Handle IRQ_SET_MASK_OK (==0) and IRQ_SET_MASK_OK_NOCOPY(==1) return values correctly by checking the valid return values seperately. Signed-off-by: Jiang Liu Cc: Jiang Liu Cc: Keping Chen Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1333120296-13563-2-git-send-email-jiang.liu@huawei.com Signed-off-by: Thomas Gleixner

Fix common misspellings

2011-03-31T14:26:23Z

Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi

genirq: Remove move_*irq leftovers

2011-03-29T12:50:32Z

All users converted to new interface. Signed-off-by: Thomas Gleixner

genirq: Fix typo and remove unused variable

2011-03-28T18:28:56Z

Sigh, I'm overworked. Signed-off-by: Thomas Gleixner

genirq: Move INPROGRESS, MASKED and DISABLED state flags to irq_data

2011-03-28T14:55:10Z

We really need these flags for some of the interrupt chips. Move it from internal state to irq_data and provide proper accessors. Signed-off-by: Thomas Gleixner Cc: David Daney

genirq: Implement irq_data based move_*_irq() versions

2011-02-19T11:58:25Z

No need to lookup the irq descriptor when calling from a chip callback function which has irq_data already handy. Signed-off-by: Thomas Gleixner

genirq: Mirror IRQ_PER_CPU and IRQ_NO_BALANCING in irq_data.state

2011-02-19T11:58:20Z

That's the right data structure to look at for arch code. Accessor functions are provided. irqd_is_per_cpu(irqdata); irqd_can_balance(irqdata); Coders who access them directly will be tracked down and slapped with stinking trouts. Signed-off-by: Thomas Gleixner