workqueue: rename @id to @pi in for_each_each_pool()

Rename @id argument of for_each_pool() to @pi so that it doesn't get
reused accidentally when for_each_pool() is used in combination with
other iterators.

This patch is purely cosmetic.

Signed-off-by: Tejun Heo <tj@kernel.org>

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 248a1e9..147fc5a 100644 (file)
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -283,7 +283,7 @@ EXPORT_SYMBOL_GPL(system_freezable_wq);
 /**
  * for_each_pool - iterate through all worker_pools in the system
  * @pool: iteration cursor
- * @id: integer used for iteration
+ * @pi: integer used for iteration
  *
  * This must be called either with workqueue_lock held or sched RCU read
  * locked.  If the pool needs to be used beyond the locking in effect, the
@@ -292,8 +292,8 @@ EXPORT_SYMBOL_GPL(system_freezable_wq);
  * The if/else clause exists only for the lockdep assertion and can be
  * ignored.
  */
-#define for_each_pool(pool, id)                                                \
-       idr_for_each_entry(&worker_pool_idr, pool, id)                  \
+#define for_each_pool(pool, pi)                                                \
+       idr_for_each_entry(&worker_pool_idr, pool, pi)                  \
                if (({ assert_rcu_or_wq_lock(); false; })) { }          \
                else
 
@@ -4354,7 +4354,7 @@ void freeze_workqueues_begin(void)
        struct worker_pool *pool;
        struct workqueue_struct *wq;
        struct pool_workqueue *pwq;
-       int id;
+       int pi;
 
        spin_lock_irq(&workqueue_lock);
 
@@ -4362,7 +4362,7 @@ void freeze_workqueues_begin(void)
        workqueue_freezing = true;
 
        /* set FREEZING */
-       for_each_pool(pool, id) {
+       for_each_pool(pool, pi) {
                spin_lock(&pool->lock);
                WARN_ON_ONCE(pool->flags & POOL_FREEZING);
                pool->flags |= POOL_FREEZING;
@@ -4435,7 +4435,7 @@ void thaw_workqueues(void)
        struct workqueue_struct *wq;
        struct pool_workqueue *pwq;
        struct worker_pool *pool;
-       int id;
+       int pi;
 
        spin_lock_irq(&workqueue_lock);
 
@@ -4443,7 +4443,7 @@ void thaw_workqueues(void)
                goto out_unlock;
 
        /* clear FREEZING */
-       for_each_pool(pool, id) {
+       for_each_pool(pool, pi) {
                spin_lock(&pool->lock);
                WARN_ON_ONCE(!(pool->flags & POOL_FREEZING));
                pool->flags &= ~POOL_FREEZING;
@@ -4457,7 +4457,7 @@ void thaw_workqueues(void)
        }
 
        /* kick workers */
-       for_each_pool(pool, id) {
+       for_each_pool(pool, pi) {
                spin_lock(&pool->lock);
                wake_up_worker(pool);
                spin_unlock(&pool->lock);