linux-kernel - [PATCH 1/1] workqueue: use type int instead of bool to index array

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Date:   Wed, 6 Sep 2017 11:34:14 +0800
From:   zijun_hu <zijun_hu@...o.com>
To:     tj@...nel.org, Andrew Morton <akpm@...ux-foundation.org>,
        jiangshanlai@...il.com
Cc:     linux-kernel@...r.kernel.org, zijun_hu@....com
Subject: [PATCH 1/1] workqueue: use type int instead of bool to index array

From: zijun_hu <zijun_hu@....com>

type bool is used to index three arrays in alloc_and_link_pwqs()
it doesn't look like conventional.

it is fixed by using type int to index the relevant arrays.

Signed-off-by: zijun_hu <zijun_hu@....com>
---
 kernel/workqueue.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index ab3c0dc8c7ed..0c7a16792949 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -3917,7 +3917,7 @@ static void wq_update_unbound_numa(struct workqueue_struct *wq, int cpu,
 
 static int alloc_and_link_pwqs(struct workqueue_struct *wq)
 {
-	bool highpri = wq->flags & WQ_HIGHPRI;
+	int pool_idx = (wq->flags & WQ_HIGHPRI) ? 1 : 0;
 	int cpu, ret;
 
 	if (!(wq->flags & WQ_UNBOUND)) {
@@ -3931,7 +3931,7 @@ static int alloc_and_link_pwqs(struct workqueue_struct *wq)
 			struct worker_pool *cpu_pools =
 				per_cpu(cpu_worker_pools, cpu);
 
-			init_pwq(pwq, wq, &cpu_pools[highpri]);
+			init_pwq(pwq, wq, &cpu_pools[pool_idx]);
 
 			mutex_lock(&wq->mutex);
 			link_pwq(pwq);
@@ -3939,14 +3939,15 @@ static int alloc_and_link_pwqs(struct workqueue_struct *wq)
 		}
 		return 0;
 	} else if (wq->flags & __WQ_ORDERED) {
-		ret = apply_workqueue_attrs(wq, ordered_wq_attrs[highpri]);
+		ret = apply_workqueue_attrs(wq, ordered_wq_attrs[pool_idx]);
 		/* there should only be single pwq for ordering guarantee */
 		WARN(!ret && (wq->pwqs.next != &wq->dfl_pwq->pwqs_node ||
 			      wq->pwqs.prev != &wq->dfl_pwq->pwqs_node),
 		     "ordering guarantee broken for workqueue %s\n", wq->name);
 		return ret;
 	} else {
-		return apply_workqueue_attrs(wq, unbound_std_wq_attrs[highpri]);
+		return apply_workqueue_attrs(wq,
+					unbound_std_wq_attrs[pool_idx]);
 	}
 }
 
-- 
1.9.1