From 3289e0533e70aafa9fb6d128fd4452db1b8befe8 Mon Sep 17 00:00:00 2001 From: Baoquan He Date: Mon, 24 Oct 2022 16:14:33 +0800 Subject: [PATCH] mm/percpu.c: remove the lcm code since block size is fixed at page size Since commit b239f7daf553 ("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: Baoquan He Signed-off-by: Dennis Zhou --- mm/percpu.c | 12 ++---------- 1 file changed, 2 insertions(+), 10 deletions(-) diff --git a/mm/percpu.c b/mm/percpu.c index a223b31..acd78da 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -72,7 +72,6 @@ #include #include #include -#include #include #include #include @@ -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, -- 2.7.4