diff options
| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2023-12-28 15:47:03 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-01-09 00:27:15 +0100 |
| commit | fd37721803c6e73619108f76ad2e12a9aa5fafaf (patch) | |
| tree | 9f4b4af44314d4e0c38bda7a6558abed65186260 /mm/show_mem.c | |
| parent | selftests/mm: add separate UFFDIO_MOVE test for PMD splitting (diff) | |
| download | linux-fd37721803c6e73619108f76ad2e12a9aa5fafaf.tar.xz linux-fd37721803c6e73619108f76ad2e12a9aa5fafaf.zip | |
mm, treewide: introduce NR_PAGE_ORDERS
NR_PAGE_ORDERS defines the number of page orders supported by the page
allocator, ranging from 0 to MAX_ORDER, MAX_ORDER + 1 in total.
NR_PAGE_ORDERS assists in defining arrays of page orders and allows for
more natural iteration over them.
[kirill.shutemov@linux.intel.com: fixup for kerneldoc warning]
Link: https://lkml.kernel.org/r/20240101111512.7empzyifq7kxtzk3@box
Link: https://lkml.kernel.org/r/20231228144704.14033-1-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/show_mem.c')
| -rw-r--r-- | mm/show_mem.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/mm/show_mem.c b/mm/show_mem.c index ba0808d6917f..8dcfafbd283c 100644 --- a/mm/show_mem.c +++ b/mm/show_mem.c @@ -352,8 +352,8 @@ static void show_free_areas(unsigned int filter, nodemask_t *nodemask, int max_z for_each_populated_zone(zone) { unsigned int order; - unsigned long nr[MAX_ORDER + 1], flags, total = 0; - unsigned char types[MAX_ORDER + 1]; + unsigned long nr[NR_PAGE_ORDERS], flags, total = 0; + unsigned char types[NR_PAGE_ORDERS]; if (zone_idx(zone) > max_zone_idx) continue; @@ -363,7 +363,7 @@ static void show_free_areas(unsigned int filter, nodemask_t *nodemask, int max_z printk(KERN_CONT "%s: ", zone->name); spin_lock_irqsave(&zone->lock, flags); - for (order = 0; order <= MAX_ORDER; order++) { + for (order = 0; order < NR_PAGE_ORDERS; order++) { struct free_area *area = &zone->free_area[order]; int type; @@ -377,7 +377,7 @@ static void show_free_areas(unsigned int filter, nodemask_t *nodemask, int max_z } } spin_unlock_irqrestore(&zone->lock, flags); - for (order = 0; order <= MAX_ORDER; order++) { + for (order = 0; order < NR_PAGE_ORDERS; order++) { printk(KERN_CONT "%lu*%lukB ", nr[order], K(1UL) << order); if (nr[order]) |