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>
diff --git a/mm/percpu.c b/mm/percpu.c
index 39f7dfd..46485e1 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1086,7 +1086,7 @@
static int group_map[NR_CPUS] __initdata;
static int group_cnt[NR_CPUS] __initdata;
const size_t static_size = __per_cpu_end - __per_cpu_start;
- int group_cnt_max = 0, nr_groups = 1, nr_units = 0;
+ int nr_groups = 1, nr_units = 0;
size_t size_sum, min_unit_size, alloc_size;
int upa, max_upa, uninitialized_var(best_upa); /* units_per_alloc */
int last_allocs, group, unit;
@@ -1096,7 +1096,7 @@
/* this function may be called multiple times */
memset(group_map, 0, sizeof(group_map));
- memset(group_cnt, 0, sizeof(group_map));
+ memset(group_cnt, 0, sizeof(group_cnt));
/*
* Determine min_unit_size, alloc_size and max_upa such that
@@ -1130,7 +1130,6 @@
}
group_map[cpu] = group;
group_cnt[group]++;
- group_cnt_max = max(group_cnt_max, group_cnt[group]);
}
/*