tree 796028ad04f906c2c60f7fe998ed6bc7dc623d14
parent 5a3f75e3f02836518ce49536e9c460ca8e1fa290
author Thomas Gleixner <tglx@linutronix.de> 1436116353 +0000
committer Thomas Gleixner <tglx@linutronix.de> 1436262844 +0200

x86/irq: Use proper locking in check_irq_vectors_for_cpu_disable()

It's unsafe to examine fields in the irq descriptor w/o holding the
descriptor lock. Add proper locking.

While at it add a comment why the vector check can run lock less

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: xiao jin <jin.xiao@intel.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Borislav Petkov <bp@suse.de>
Cc: Yanmin Zhang <yanmin_zhang@linux.intel.com>
Link: http://lkml.kernel.org/r/20150705171102.236544164@linutronix.de