Commit 3289e053 authored by Baoquan He's avatar Baoquan He Committed by Dennis Zhou
Browse files

mm/percpu.c: remove the lcm code since block size is fixed at page size 



Since commit b239f7da ("percpu: set PCPU_BITMAP_BLOCK_SIZE to
PAGE_SIZE"), the PCPU_BITMAP_BLOCK_SIZE has been set to page size
fixedly. So the lcm code in pcpu_alloc_first_chunk() doesn't make
sense any more, clean it up.

Signed-off-by: default avatarBaoquan He <bhe@redhat.com>
Signed-off-by: default avatarDennis Zhou <dennis@kernel.org>
parent 83d261fc

mm/percpu.c

+2 −10
Original line number Diff line number Diff line
@@ -72,7 +72,6 @@ 
#include <linux/cpumask.h>

#include <linux/memblock.h>

#include <linux/err.h>

#include <linux/lcm.h>

#include <linux/list.h>

#include <linux/log2.h>

#include <linux/mm.h>
@@ -1347,7 +1346,7 @@ static struct pcpu_chunk * __init pcpu_alloc_first_chunk(unsigned long tmp_addr, 
							 int map_size)

{

	struct pcpu_chunk *chunk;

	unsigned long aligned_addr, lcm_align;

	unsigned long aligned_addr;

	int start_offset, offset_bits, region_size, region_bits;

	size_t alloc_size;
@@ -1355,14 +1354,7 @@ static struct pcpu_chunk * __init pcpu_alloc_first_chunk(unsigned long tmp_addr, 
	aligned_addr = tmp_addr & PAGE_MASK;



	start_offset = tmp_addr - aligned_addr;



	/*

	 * Align the end of the region with the LCM of PAGE_SIZE and

	 * PCPU_BITMAP_BLOCK_SIZE.  One of these constants is a multiple of

	 * the other.

	 */

	lcm_align = lcm(PAGE_SIZE, PCPU_BITMAP_BLOCK_SIZE);

	region_size = ALIGN(start_offset + map_size, lcm_align);

	region_size = ALIGN(start_offset + map_size, PAGE_SIZE);



	/* allocate chunk */

	alloc_size = struct_size(chunk, populated,