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percpu: fix trivial bugs in pcpu_build_alloc_info()
Fix the following two trivial bugs in pcpu_build_alloc_info() * we should memset group_cnt to 0 by size of group_cnt, not size of group_map (both are of the same size, so the bug isn't dangerous) * we can delete useless variable group_cnt_max. Signed-off-by: Pavel V. Panteleev <pp_84@mail.ru> Signed-off-by: Tejun Heo <tj@kernel.org>
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1 changed files with 2 additions and 3 deletions
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@ -1086,7 +1086,7 @@ struct pcpu_alloc_info * __init pcpu_build_alloc_info(
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static int group_map[NR_CPUS] __initdata;
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static int group_cnt[NR_CPUS] __initdata;
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const size_t static_size = __per_cpu_end - __per_cpu_start;
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int group_cnt_max = 0, nr_groups = 1, nr_units = 0;
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int nr_groups = 1, nr_units = 0;
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size_t size_sum, min_unit_size, alloc_size;
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int upa, max_upa, uninitialized_var(best_upa); /* units_per_alloc */
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int last_allocs, group, unit;
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@ -1096,7 +1096,7 @@ struct pcpu_alloc_info * __init pcpu_build_alloc_info(
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/* this function may be called multiple times */
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memset(group_map, 0, sizeof(group_map));
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memset(group_cnt, 0, sizeof(group_map));
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memset(group_cnt, 0, sizeof(group_cnt));
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/*
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* Determine min_unit_size, alloc_size and max_upa such that
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@ -1130,7 +1130,6 @@ struct pcpu_alloc_info * __init pcpu_build_alloc_info(
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}
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group_map[cpu] = group;
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group_cnt[group]++;
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group_cnt_max = max(group_cnt_max, group_cnt[group]);
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}
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/*
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