workqueue: replace WORK_CPU_NONE/LAST with WORK_CPU_END

Now that workqueue has moved away from gcwqs, workqueue no longer has
the need to have a CPU identifier indicating "no cpu associated" - we
now use WORK_OFFQ_POOL_NONE instead - and most uses of WORK_CPU_NONE
are gone.

The only left usage is as the end marker for for_each_*wq*()
iterators, where the name WORK_CPU_NONE is confusing w/o actual
WORK_CPU_NONE usages.  Similarly, WORK_CPU_LAST which equals
WORK_CPU_NONE no longer makes sense.

Replace both WORK_CPU_NONE and LAST with WORK_CPU_END.  This patch
doesn't introduce any functional difference.

tj: s/WORK_CPU_LAST/WORK_CPU_END/ and rewrote the description.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 5 insertions, 5 deletions

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 577de1073f24..7e11334a119f 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -258,7 +258,7 @@ static inline int __next_wq_cpu(int cpu, const struct cpumask *mask,
                 if (sw & 2)
                         return WORK_CPU_UNBOUND;
         }
-        return WORK_CPU_NONE;
+        return WORK_CPU_END;
 }
 
 static inline int __next_cwq_cpu(int cpu, const struct cpumask *mask,
@@ -282,17 +282,17 @@ static inline int __next_cwq_cpu(int cpu, const struct cpumask *mask,
  */
 #define for_each_wq_cpu(cpu)                                            \
         for ((cpu) = __next_wq_cpu(-1, cpu_possible_mask, 3);           \
-             (cpu) < WORK_CPU_NONE;                                     \
+             (cpu) < WORK_CPU_END;                                      \
              (cpu) = __next_wq_cpu((cpu), cpu_possible_mask, 3))
 
 #define for_each_online_wq_cpu(cpu)                                     \
         for ((cpu) = __next_wq_cpu(-1, cpu_online_mask, 3);             \
-             (cpu) < WORK_CPU_NONE;                                     \
+             (cpu) < WORK_CPU_END;                                      \
              (cpu) = __next_wq_cpu((cpu), cpu_online_mask, 3))
 
 #define for_each_cwq_cpu(cpu, wq)                                       \
         for ((cpu) = __next_cwq_cpu(-1, cpu_possible_mask, (wq));       \
-             (cpu) < WORK_CPU_NONE;                                     \
+             (cpu) < WORK_CPU_END;                                      \
              (cpu) = __next_cwq_cpu((cpu), cpu_possible_mask, (wq)))
 
 #ifdef CONFIG_DEBUG_OBJECTS_WORK
@@ -3796,7 +3796,7 @@ static int __init init_workqueues(void)
 
         /* make sure we have enough bits for OFFQ pool ID */
         BUILD_BUG_ON((1LU << (BITS_PER_LONG - WORK_OFFQ_POOL_SHIFT)) <
-                     WORK_CPU_LAST * NR_STD_WORKER_POOLS);
+                     WORK_CPU_END * NR_STD_WORKER_POOLS);
 
         cpu_notifier(workqueue_cpu_up_callback, CPU_PRI_WORKQUEUE_UP);
         hotcpu_notifier(workqueue_cpu_down_callback, CPU_PRI_WORKQUEUE_DOWN);