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yaml --- r: 206254 b: refs/heads/master c: 0988495 h: refs/heads/master v: v3
git-mirror · Aug 1, 2010 · 08a85ce · 08a85ce
1 parent 29df1f4
commit 08a85ce
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Showing 2 changed files with 14 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 40f2b6ffe525e975203c1621d4d4abaa7689b674
+refs/heads/master: 098849516dd522a343e659740c8f1394a5b7fa69
diff --git a/trunk/kernel/workqueue.c b/trunk/kernel/workqueue.c
@@ -271,6 +271,19 @@ static inline int __next_wq_cpu(int cpu, const struct cpumask *mask,
 	return __next_gcwq_cpu(cpu, mask, !(wq->flags & WQ_UNBOUND) ? 1 : 2);
 }
 
+/*
+ * CPU iterators
+ *
+ * An extra gcwq is defined for an invalid cpu number
+ * (WORK_CPU_UNBOUND) to host workqueues which are not bound to any
+ * specific CPU.  The following iterators are similar to
+ * for_each_*_cpu() iterators but also considers the unbound gcwq.
+ *
+ * for_each_gcwq_cpu()		: possible CPUs + WORK_CPU_UNBOUND
+ * for_each_online_gcwq_cpu()	: online CPUs + WORK_CPU_UNBOUND
+ * for_each_cwq_cpu()		: possible CPUs for bound workqueues,
+ *				  WORK_CPU_UNBOUND for unbound workqueues
+ */
 #define for_each_gcwq_cpu(cpu)						\
 	for ((cpu) = __next_gcwq_cpu(-1, cpu_possible_mask, 3);		\
 	     (cpu) < WORK_CPU_NONE;					\