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Commit 0c4169c3 authored by Dennis Zhou (Facebook)'s avatar Dennis Zhou (Facebook) Committed by Tejun Heo
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percpu: setup_first_chunk rename schunk/dchunk to chunk 



There is no need to have the static chunk and dynamic chunk be named
separately as the allocations are sequential. This preemptively solves
the misnomer problem with the base_addrs being moved up in the following
patch. It also removes a ternary operation deciding the first chunk.

Signed-off-by: default avatarDennis Zhou <dennisszhou@gmail.com>
Reviewed-by: default avatarJosef Bacik <jbacik@fb.com>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent 6b9d7c8e

mm/percpu.c

+8 −8
Original line number Diff line number Diff line
@@ -1602,7 +1602,7 @@ int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai, 
	static int smap[PERCPU_DYNAMIC_EARLY_SLOTS] __initdata;

	static int dmap[PERCPU_DYNAMIC_EARLY_SLOTS] __initdata;

	size_t size_sum = ai->static_size + ai->reserved_size + ai->dyn_size;

	struct pcpu_chunk *schunk, *dchunk = NULL;

	struct pcpu_chunk *chunk;

	unsigned long *group_offsets;

	size_t *group_sizes;

	unsigned long *unit_off;
@@ -1720,22 +1720,22 @@ int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai, 
	 */

	start_offset = ai->static_size;

	map_size = ai->reserved_size ?: ai->dyn_size;

	schunk = pcpu_alloc_first_chunk(base_addr, start_offset, map_size,

					smap, ARRAY_SIZE(smap));

	chunk = pcpu_alloc_first_chunk(base_addr, start_offset, map_size, smap,

				       ARRAY_SIZE(smap));



	/* init dynamic chunk if necessary */

	if (ai->reserved_size) {

		pcpu_reserved_chunk = schunk;

		pcpu_reserved_chunk = chunk;



		start_offset = ai->static_size + ai->reserved_size;

		map_size = ai->dyn_size;

		dchunk = pcpu_alloc_first_chunk(base_addr, start_offset,

		chunk = pcpu_alloc_first_chunk(base_addr, start_offset,

					       map_size, dmap,

					       ARRAY_SIZE(dmap));

	}



	/* link the first chunk in */

	pcpu_first_chunk = dchunk ?: schunk;

	pcpu_first_chunk = chunk;

	i = (pcpu_first_chunk->start_offset) ? 1 : 0;

	pcpu_nr_empty_pop_pages +=

		pcpu_count_occupied_pages(pcpu_first_chunk, i);