#include <linux/smp.h>
#include <linux/blk-mq.h>
+#include "blk.h"
#include "blk-mq.h"
#include "blk-mq-tag.h"
{
struct blk_mq_hw_ctx *hctx = container_of(kobj, struct blk_mq_hw_ctx,
kobj);
+
+ if (hctx->flags & BLK_MQ_F_BLOCKING)
+ cleanup_srcu_struct(hctx->queue_rq_srcu);
+ blk_free_flush_queue(hctx->fq);
+ sbitmap_free(&hctx->ctx_map);
free_cpumask_var(hctx->cpumask);
kfree(hctx->ctxs);
kfree(hctx);
static ssize_t blk_mq_hw_sysfs_cpus_show(struct blk_mq_hw_ctx *hctx, char *page)
{
+ const size_t size = PAGE_SIZE - 1;
unsigned int i, first = 1;
- ssize_t ret = 0;
+ int ret = 0, pos = 0;
for_each_cpu(i, hctx->cpumask) {
if (first)
- ret += sprintf(ret + page, "%u", i);
+ ret = snprintf(pos + page, size - pos, "%u", i);
else
- ret += sprintf(ret + page, ", %u", i);
+ ret = snprintf(pos + page, size - pos, ", %u", i);
+
+ if (ret >= size - pos)
+ break;
first = 0;
+ pos += ret;
}
- ret += sprintf(ret + page, "\n");
- return ret;
+ ret = snprintf(pos + page, size + 1 - pos, "\n");
+ return pos + ret;
}
static struct attribute *default_ctx_attrs[] = {
queue_for_each_hw_ctx(q, hctx, i)
blk_mq_unregister_hctx(hctx);
- blk_mq_debugfs_unregister_mq(q);
-
kobject_uevent(&q->mq_kobj, KOBJ_REMOVE);
kobject_del(&q->mq_kobj);
kobject_put(&dev->kobj);
kobject_uevent(&q->mq_kobj, KOBJ_ADD);
- blk_mq_debugfs_register(q);
-
queue_for_each_hw_ctx(q, hctx, i) {
ret = blk_mq_register_hctx(hctx);
if (ret)
while (--i >= 0)
blk_mq_unregister_hctx(q->queue_hw_ctx[i]);
- blk_mq_debugfs_unregister_mq(q);
-
kobject_uevent(&q->mq_kobj, KOBJ_REMOVE);
kobject_del(&q->mq_kobj);
kobject_put(&dev->kobj);
if (!q->mq_sysfs_init_done)
goto unlock;
- blk_mq_debugfs_unregister_mq(q);
-
queue_for_each_hw_ctx(q, hctx, i)
blk_mq_unregister_hctx(hctx);
if (!q->mq_sysfs_init_done)
goto unlock;
- blk_mq_debugfs_register_mq(q);
-
queue_for_each_hw_ctx(q, hctx, i) {
ret = blk_mq_register_hctx(hctx);
if (ret)