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Commit 4af1e6fb authored by Dennis Zhou (Facebook)'s avatar Dennis Zhou (Facebook) Committed by Tejun Heo
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percpu: remove has_reserved from pcpu_chunk 



Prior this variable was used to manage statistics when the first chunk
had a reserved region. The previous patch introduced start_offset to
keep track of the offset by value rather than boolean. Therefore,
has_reserved can be removed.

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 e2266705

mm/percpu-internal.h

+0 −5
Original line number Diff line number Diff line
@@ -23,11 +23,6 @@ struct pcpu_chunk { 
	void			*data;		/* chunk data */

	int			first_free;	/* no free below this */

	bool			immutable;	/* no [de]population allowed */

	bool			has_reserved;	/* Indicates if chunk has reserved space

						   at the beginning. Reserved chunk will

						   contain reservation for static chunk.

						   Dynamic chunk will contain reservation

						   for static and reserved chunks. */

	int			start_offset;	/* the overlap with the previous

						   region to have a page aligned

						   base_addr */

mm/percpu-stats.c

+1 −1
Original line number Diff line number Diff line
@@ -58,7 +58,7 @@ static void chunk_map_stats(struct seq_file *m, struct pcpu_chunk *chunk, 
	int cur_min_alloc = 0, cur_med_alloc = 0, cur_max_alloc = 0;



	alloc_sizes = buffer;

	s_index = chunk->has_reserved ? 1 : 0;

	s_index = (chunk->start_offset) ? 1 : 0;



	/* find last allocation */

	last_alloc = -1;

mm/percpu.c

+0 −3
Original line number Diff line number Diff line
@@ -727,7 +727,6 @@ static struct pcpu_chunk *pcpu_alloc_chunk(void) 
	chunk->map[0] = 0;

	chunk->map[1] = pcpu_unit_size | 1;

	chunk->map_used = 1;

	chunk->has_reserved = false;



	INIT_LIST_HEAD(&chunk->list);

	INIT_LIST_HEAD(&chunk->map_extend_list);
@@ -1704,7 +1703,6 @@ int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai, 
	schunk->map[1] = schunk->start_offset;

	schunk->map[2] = (ai->static_size + schunk->free_size) | 1;

	schunk->map_used = 2;

	schunk->has_reserved = true;



	/* init dynamic chunk if necessary */

	if (dyn_size) {
@@ -1724,7 +1722,6 @@ int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai, 
		dchunk->map[1] = dchunk->start_offset;

		dchunk->map[2] = (dchunk->start_offset + dchunk->free_size) | 1;

		dchunk->map_used = 2;

		dchunk->has_reserved = true;

	}



	/* link the first chunk in */