Commit fb59e72e authored by Tejun Heo's avatar Tejun Heo
Browse files

percpu: make pcpu_build_alloc_info() clear static buffers 



pcpu_build_alloc_info() may be called multiple times when percpu is
falling back to different first chunk allocator.  Make it clear static
buffers so that they don't contain values from previous runs.

Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent ffe0d5a5

mm/percpu.c

+4 −0
Original line number Diff line number Diff line
@@ -1347,6 +1347,10 @@ struct pcpu_alloc_info * __init pcpu_build_alloc_info( 
	struct pcpu_alloc_info *ai;

	unsigned int *cpu_map;



	/* this function may be called multiple times */

	memset(group_map, 0, sizeof(group_map));

	memset(group_cnt, 0, sizeof(group_map));



	/*

	 * Determine min_unit_size, alloc_size and max_upa such that

	 * alloc_size is multiple of atom_size and is the smallest