pcpu_free

Name: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.

Proto:static void pcpu_free_area(struct pcpu_chunk *chunk, int off)

Type:void

Parameter:

Type	Parameter	Name
struct pcpu_chunk *	chunk
int	off

1245

chunk_md = chunk_md

1248

lockdep_assert_held( & pcpu_lock)

1249

pcpu_stats_area_dealloc(chunk)

1251

oslot = pcpu_chunk_slot(chunk)

1253

bit_off = off / PCPU_MIN_ALLOC_SIZE

1256

end = Find the next set bit in a memory region.

1258

bits = end - bit_off

1259

bitmap_clear( allocation map , bit_off, bits)

1262

free bytes in the chunk += bits * PCPU_MIN_ALLOC_SIZE

1265

lock position of first free = min - return minimum of two values of the same or compatible types*@x: first value*@y: second value(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

**Caller**
Name	Describe
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	free previously allocated percpu memory

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Function report