diff options
Diffstat (limited to 'mm/percpu.c')
| -rw-r--r-- | mm/percpu.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/mm/percpu.c b/mm/percpu.c index 4617d97e877c..997724c2ea24 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -119,7 +119,7 @@ static struct rb_root pcpu_addr_root = RB_ROOT; /* chunks by address */ static int pcpu_size_to_slot(int size) { - int highbit = fls(size); + int highbit = fls(size); /* size is in bytes */ return max(highbit - PCPU_SLOT_BASE_SHIFT + 2, 1); } @@ -158,8 +158,8 @@ static bool pcpu_chunk_page_occupied(struct pcpu_chunk *chunk, /** * pcpu_realloc - versatile realloc * @p: the current pointer (can be NULL for new allocations) - * @size: the current size (can be 0 for new allocations) - * @new_size: the wanted new size (can be 0 for free) + * @size: the current size in bytes (can be 0 for new allocations) + * @new_size: the wanted new size in bytes (can be 0 for free) * * More robust realloc which can be used to allocate, resize or free a * memory area of arbitrary size. If the needed size goes over @@ -290,8 +290,8 @@ static void pcpu_chunk_addr_insert(struct pcpu_chunk *new) * pcpu_split_block - split a map block * @chunk: chunk of interest * @i: index of map block to split - * @head: head size (can be 0) - * @tail: tail size (can be 0) + * @head: head size in bytes (can be 0) + * @tail: tail size in bytes (can be 0) * * Split the @i'th map block into two or three blocks. If @head is * non-zero, @head bytes block is inserted before block @i moving it @@ -346,7 +346,7 @@ static int pcpu_split_block(struct pcpu_chunk *chunk, int i, int head, int tail) /** * pcpu_alloc_area - allocate area from a pcpu_chunk * @chunk: chunk of interest - * @size: wanted size + * @size: wanted size in bytes * @align: wanted align * * Try to allocate @size bytes area aligned at @align from @chunk. @@ -540,15 +540,15 @@ static void pcpu_unmap(struct pcpu_chunk *chunk, int page_start, int page_end, * pcpu_depopulate_chunk - depopulate and unmap an area of a pcpu_chunk * @chunk: chunk to depopulate * @off: offset to the area to depopulate - * @size: size of the area to depopulate + * @size: size of the area to depopulate in bytes * @flush: whether to flush cache and tlb or not * * For each cpu, depopulate and unmap pages [@page_start,@page_end) * from @chunk. If @flush is true, vcache is flushed before unmapping * and tlb after. */ -static void pcpu_depopulate_chunk(struct pcpu_chunk *chunk, size_t off, - size_t size, bool flush) +static void pcpu_depopulate_chunk(struct pcpu_chunk *chunk, int off, int size, + bool flush) { int page_start = PFN_DOWN(off); int page_end = PFN_UP(off + size); @@ -617,7 +617,7 @@ static int pcpu_map(struct pcpu_chunk *chunk, int page_start, int page_end) * pcpu_populate_chunk - populate and map an area of a pcpu_chunk * @chunk: chunk of interest * @off: offset to the area to populate - * @size: size of the area to populate + * @size: size of the area to populate in bytes * * For each cpu, populate and map pages [@page_start,@page_end) into * @chunk. The area is cleared on return. @@ -707,7 +707,7 @@ static struct pcpu_chunk *alloc_pcpu_chunk(void) /** * __alloc_percpu - allocate percpu area - * @size: size of area to allocate + * @size: size of area to allocate in bytes * @align: alignment of area (max PAGE_SIZE) * * Allocate percpu area of @size bytes aligned at @align. Might @@ -819,6 +819,7 @@ EXPORT_SYMBOL_GPL(free_percpu); * pcpu_setup_static - initialize kernel static percpu area * @populate_pte_fn: callback to allocate pagetable * @pages: num_possible_cpus() * PFN_UP(cpu_size) pages + * @cpu_size: the size of static percpu area in bytes * * Initialize kernel static percpu area. The caller should allocate * all the necessary pages and pass them in @pages. |