OpenCloudOS-Kernel/arch/ia64/sn
Thomas Gleixner 785aebd0cf ia64: Validate online cpus in irq_set_affinity() callbacks
The [user space] interface does not filter out offline cpus. It merily
guarantees that the mask contains at least one online cpu.

So the selector in the irq chip implementation needs to make sure to
pick only an online cpu because otherwise:

     Offline Core 1
     Set affinity to 0xe (is valid due to online mask 0xd)
     cpumask_first will pick core 1, which is offline

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: ia64 <linux-ia64@vger.kernel.org>
Link: http://lkml.kernel.org/r/20140304203100.650414633@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-03-12 13:07:40 +01:00
..
include [IA64-SGI] Older PROM WAR for device flush code 2006-01-17 10:08:37 -08:00
kernel ia64: Validate online cpus in irq_set_affinity() callbacks 2014-03-12 13:07:40 +01:00
pci ia64/PCI: Use dev_is_pci() to identify PCI devices 2013-12-09 16:50:22 -07:00
Makefile [IA64-SGI] Recursive flags do not work for selective builds 2006-01-26 13:17:34 -08:00