函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:block\blk-mq-debugfs.c Create Date:2022-07-27 19:43:37
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：hctx_tags_bitmap_show

函数原型：static int hctx_tags_bitmap_show(void *data, struct seq_file *m)

返回类型：int

参数：

类型参数名称
void *data
struct seq_file *m
479  hctx等于data
480  q等于@queue: Pointer to the request queue that owns this hardware context.
483  res等于mutex_lock_interruptible( & sysfs_lock)
484  如果res则转到:out
486  如果@tags: Tags owned by the block driver. A tag at this set is only* assigned when a request is dispatched from a hardware queue.则sbitmap_bitmap_show( & sb, m)
488  mutex_unlock - release the mutex*@lock: the mutex to be released* Unlock a mutex that has been locked by this task previously.* This function must not be used in interrupt context. Unlocking* of a not locked mutex is not allowed.
490  out :
491  返回:res