diff options
| author | Wei Yang <richard.weiyang@gmail.com> | 2024-06-05 07:13:38 +0000 |
|---|---|---|
| committer | Mike Rapoport (IBM) <rppt@kernel.org> | 2024-06-06 07:55:43 +0300 |
| commit | 544b8e14c24b1f1927659e546d008d678e77e19c (patch) | |
| tree | b9b467fb5201a95d8e5ee5113685e0b3d9fc9c10 /mm/mm_init.c | |
| parent | ce8ebb95439459f7e24b02c6943e278f46d2d328 (diff) | |
mm/mm_init.c: use deferred_init_mem_pfn_range_in_zone() to decide loop condition
If deferred_init_mem_pfn_range_in_zone() return true, we know it finds
some range in (spfn, epfn). Then we can use it directly for the loop
condition.
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed-by: Mike Rapoport (IBM) <rppt@kernel.org>
Link: https://lore.kernel.org/all/20240605071339.15330-1-richard.weiyang@gmail.com
Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
Diffstat (limited to 'mm/mm_init.c')
| -rw-r--r-- | mm/mm_init.c | 15 |
1 files changed, 4 insertions, 11 deletions
diff --git a/mm/mm_init.c b/mm/mm_init.c index 6eda9367730b..c9c8c7458f27 100644 --- a/mm/mm_init.c +++ b/mm/mm_init.c @@ -2170,20 +2170,15 @@ static int __init deferred_init_memmap(void *data) /* Only the highest zone is deferred */ zone = pgdat->node_zones + pgdat->nr_zones - 1; - /* If the zone is empty somebody else may have cleared out the zone */ - if (!deferred_init_mem_pfn_range_in_zone(&i, zone, &spfn, &epfn, - first_init_pfn)) - goto zone_empty; - max_threads = deferred_page_init_max_threads(cpumask); - while (spfn < epfn) { - unsigned long epfn_align = ALIGN(epfn, PAGES_PER_SECTION); + while (deferred_init_mem_pfn_range_in_zone(&i, zone, &spfn, &epfn, first_init_pfn)) { + first_init_pfn = ALIGN(epfn, PAGES_PER_SECTION); struct padata_mt_job job = { .thread_fn = deferred_init_memmap_chunk, .fn_arg = zone, .start = spfn, - .size = epfn_align - spfn, + .size = first_init_pfn - spfn, .align = PAGES_PER_SECTION, .min_chunk = PAGES_PER_SECTION, .max_threads = max_threads, @@ -2191,10 +2186,8 @@ static int __init deferred_init_memmap(void *data) }; padata_do_multithreaded(&job); - deferred_init_mem_pfn_range_in_zone(&i, zone, &spfn, &epfn, - epfn_align); } -zone_empty: + /* Sanity check that the next zone really is unpopulated */ WARN_ON(pgdat->nr_zones < MAX_NR_ZONES && populated_zone(++zone)); |