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workqueue: use zalloc_cpumask_var() for gcwq->mayday_mask 

alloc_mayday_mask() was using alloc_cpumask_var() making
gcwq->mayday_mask contain garbage after initialization on
CONFIG_CPUMASK_OFFSTACK=y configurations.  This combined with the
previously fixed GCWQ_DISASSOCIATED initialization bug could make
rescuers fall into infinite loop trying to bind to an offline cpu.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: CAI Qian <caiqian@redhat.com>
This commit is contained in:
Tejun Heo 2010-08-31 11:18:34 +02:00
parent 477a3c33d1
commit 9c37547ab6
1 changed files with 1 additions and 1 deletions
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2
kernel/workqueue.c
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@ -196,7 +196,7 @@ typedef cpumask_var_t mayday_mask_t;
cpumask_test_and_set_cpu((cpu), (mask))
#define mayday_clear_cpu(cpu, mask) cpumask_clear_cpu((cpu), (mask))
#define for_each_mayday_cpu(cpu, mask) for_each_cpu((cpu), (mask))
#define alloc_mayday_mask(maskp, gfp) alloc_cpumask_var((maskp), (gfp))
#define alloc_mayday_mask(maskp, gfp) zalloc_cpumask_var((maskp), (gfp))
#define free_mayday_mask(mask) free_cpumask_var((mask))
#else
typedef unsigned long mayday_mask_t;