pcpu_free

函数名称：pcpu_free_area - frees the corresponding offset*@chunk: chunk of interest*@off: addr offset into chunk* This function determines the size of an allocation to free using* the boundary bitmap and clears the allocation map.

函数原型：static void pcpu_free_area(struct pcpu_chunk *chunk, int off)

返回类型：void

参数：

类型	参数	名称
struct pcpu_chunk *	chunk
int	off

1245

chunk_md等于chunk_md

1248

lockdep_assert_held( & pcpu_lock)

1249

pcpu_stats_area_dealloc(chunk)

1251

oslot等于pcpu_chunk_slot(chunk)

1253

bit_off等于off除PCPU_MIN_ALLOC_SIZE

1256

end等于在内存区域中找到下一个设置位

1258

bits等于end减bit_off

1259

bitmap_clear( allocation map , bit_off, bits)

1262

free bytes in the chunk 加等于bits乘PCPU_MIN_ALLOC_SIZE

1265

lock position of first free 等于两数取小(lock position of first free , bit_off)

1267

pcpu_block_update_hint_free - updates the block hints on the free path*@chunk: chunk of interest*@bit_off: chunk offset*@bits: size of request* Updates metadata for the allocation path. This avoids a blind block

1269

pcpu_chunk_relocate - put chunk in the appropriate chunk slot*@chunk: chunk of interest*@oslot: the previous slot it was on* This function is called after an allocation or free changed @chunk

**调用者**
名称	描述
pcpu_alloc	pcpu_alloc - the percpu allocator@size: size of area to allocate in bytes@align: alignment of area (max PAGE_SIZE)@reserved: allocate from the reserved chunk if available@gfp: allocation flags* Allocate percpu area of @size bytes aligned at @align
free_percpu	释放内存

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码

函数逻辑报告