* [merged] mm-memory_hotplug-avoid-calling-zone_intersects-for-zone_normal.patch removed from -mm tree
@ 2022-03-25 1:32 Andrew Morton
0 siblings, 0 replies; only message in thread
From: Andrew Morton @ 2022-03-25 1:32 UTC (permalink / raw)
To: mm-commits, osalvador, david, linmiaohe, akpm
The patch titled
Subject: mm/memory_hotplug: avoid calling zone_intersects() for ZONE_NORMAL
has been removed from the -mm tree. Its filename was
mm-memory_hotplug-avoid-calling-zone_intersects-for-zone_normal.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Miaohe Lin <linmiaohe@huawei.com>
Subject: mm/memory_hotplug: avoid calling zone_intersects() for ZONE_NORMAL
If zid reaches ZONE_NORMAL, the caller will always get the NORMAL zone no
matter what zone_intersects() returns. So we can save some possible cpu
cycles by avoid calling zone_intersects() for ZONE_NORMAL.
Link: https://lkml.kernel.org/r/20220207133643.23427-3-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/memory_hotplug.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/memory_hotplug.c~mm-memory_hotplug-avoid-calling-zone_intersects-for-zone_normal
+++ a/mm/memory_hotplug.c
@@ -823,7 +823,7 @@ static struct zone *default_kernel_zone_
struct pglist_data *pgdat = NODE_DATA(nid);
int zid;
- for (zid = 0; zid <= ZONE_NORMAL; zid++) {
+ for (zid = 0; zid < ZONE_NORMAL; zid++) {
struct zone *zone = &pgdat->node_zones[zid];
if (zone_intersects(zone, start_pfn, nr_pages))
_
Patches currently in -mm which might be from linmiaohe@huawei.com are
mm-huge_memory-make-is_transparent_hugepage-static.patch
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2022-03-25 1:34 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2022-03-25 1:32 [merged] mm-memory_hotplug-avoid-calling-zone_intersects-for-zone_normal.patch removed from -mm tree Andrew Morton
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.