函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:lib\debugobjects.c Create Date:2022-07-27 07:52:05
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：__free_object

函数原型：static void __free_object(struct debug_obj *obj)

返回类型：void

参数：

类型参数名称
struct debug_obj *obj
345  lookahead_count等于0
349  local_irq_save(flags)
350  如果非obj_cache则转到:free_to_obj_pool
356  percpu_pool等于this_cpu_ptr( & percpu_obj_pool)
357  如果obj_free小于ODEBUG_POOL_PERCPU_SIZE则
358  hlist_add_head( & node, & free_objs)
359  obj_free自加
360  local_irq_restore(flags)
361  返回
368  以lookahead_count小于ODEBUG_BATCH_SIZE循环
369  objs[lookahead_count]等于Allocate a new object from the hlist
370  如果非objs[lookahead_count]则退出
372  obj_free自减
375  free_to_obj_pool :
376  raw_spin_lock( & pool_lock)
377  work等于obj_pool_free大于debug_objects_pool_size且obj_cache且The number of objs on the global free list 小于We limit the freeing of debug objects via workqueue at a maximum* frequency of 10Hz and about 1024 objects for each freeing operation.* So it is freeing at most 10k debug objects per second.
379  obj_pool_used自减
381  如果work则
382  WRITE_ONCE(The number of objs on the global free list , The number of objs on the global free list + 1)
383  hlist_add_head( & node, & obj_to_free)
384  如果lookahead_count则
385  WRITE_ONCE(The number of objs on the global free list , The number of objs on the global free list + lookahead_count)
386  obj_pool_used减等于lookahead_count
387  当lookahead_count循环
393  如果obj_pool_free大于debug_objects_pool_size且The number of objs on the global free list 小于We limit the freeing of debug objects via workqueue at a maximum* frequency of 10Hz and about 1024 objects for each freeing operation.* So it is freeing at most 10k debug objects per second.则
400  以i小于ODEBUG_BATCH_SIZE循环
407  否则
408  WRITE_ONCE(obj_pool_free, obj_pool_free + 1)
409  hlist_add_head( & node, & obj_pool)
410  如果lookahead_count则
411  WRITE_ONCE(obj_pool_free, obj_pool_free + lookahead_count)
412  obj_pool_used减等于lookahead_count
413  当lookahead_count循环
419  raw_spin_unlock( & pool_lock)
420  local_irq_restore(flags)
调用者
名称描述
free_objectPut the object back into the pool and schedule work to free objects* if necessary.