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-rw-r--r--arch/x86/kernel/setup_percpu.c38
1 files changed, 15 insertions, 23 deletions
diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index 660cde133141..db5f9c49fec5 100644
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -161,9 +161,7 @@ static ssize_t __init setup_pcpu_lpage(bool chosen)
{
size_t reserve = PERCPU_MODULE_RESERVE + PERCPU_DYNAMIC_RESERVE;
size_t dyn_size = reserve - PERCPU_FIRST_CHUNK_RESERVE;
- size_t unit_map_size, unit_size;
- int *unit_map;
- int nr_units;
+ struct pcpu_alloc_info *ai;
ssize_t ret;
/* on non-NUMA, embedding is better */
@@ -177,26 +175,22 @@ static ssize_t __init setup_pcpu_lpage(bool chosen)
}
/* allocate and build unit_map */
- unit_map_size = nr_cpu_ids * sizeof(int);
- unit_map = alloc_bootmem_nopanic(unit_map_size);
- if (!unit_map) {
- pr_warning("PERCPU: failed to allocate unit_map\n");
- return -ENOMEM;
+ ai = pcpu_build_alloc_info(PERCPU_FIRST_CHUNK_RESERVE, dyn_size,
+ PMD_SIZE, pcpu_lpage_cpu_distance);
+ if (IS_ERR(ai)) {
+ pr_warning("PERCPU: failed to build unit_map (%ld)\n",
+ PTR_ERR(ai));
+ return PTR_ERR(ai);
}
- ret = pcpu_lpage_build_unit_map(PERCPU_FIRST_CHUNK_RESERVE,
- &dyn_size, &unit_size, PMD_SIZE,
- unit_map, pcpu_lpage_cpu_distance);
- if (ret < 0) {
- pr_warning("PERCPU: failed to build unit_map\n");
- goto out_free;
- }
- nr_units = ret;
-
/* do the parameters look okay? */
if (!chosen) {
size_t vm_size = VMALLOC_END - VMALLOC_START;
- size_t tot_size = nr_units * unit_size;
+ size_t tot_size = 0;
+ int group;
+
+ for (group = 0; group < ai->nr_groups; group++)
+ tot_size += ai->unit_size * ai->groups[group].nr_units;
/* don't consume more than 20% of vmalloc area */
if (tot_size > vm_size / 5) {
@@ -207,12 +201,10 @@ static ssize_t __init setup_pcpu_lpage(bool chosen)
}
}
- ret = pcpu_lpage_first_chunk(PERCPU_FIRST_CHUNK_RESERVE, dyn_size,
- unit_size, PMD_SIZE, unit_map, nr_units,
- pcpu_fc_alloc, pcpu_fc_free, pcpul_map);
+ ret = pcpu_lpage_first_chunk(ai, pcpu_fc_alloc, pcpu_fc_free,
+ pcpul_map);
out_free:
- if (ret < 0)
- free_bootmem(__pa(unit_map), unit_map_size);
+ pcpu_free_alloc_info(ai);
return ret;
}
#else