The patch titled
Subject: mm-reset-numa-stats-for-boot-pagesets-v3
has been added to the -mm tree. Its filename is
mm-reset-numa-stats-for-boot-pagesets-v3.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-reset-numa-stats-for-boot-pagesets-v3.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-reset-numa-stats-for-boot-pagesets-v3.patch
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------------------------------------------------------
From: Sandipan Das <sandipan@xxxxxxxxxxxxx>
Subject: mm-reset-numa-stats-for-boot-pagesets-v3
Drop the redundant static key-based check to see if numa stats are enabled
as suggested by Vlastimil.
Link: http://lkml.kernel.org/r/20200511170356.162531-1-sandipan@xxxxxxxxxxxxx
Signed-off-by: Sandipan Das <sandipan@xxxxxxxxxxxxx>
Acked-by: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: "Kirill A . Shutemov" <kirill@xxxxxxxxxxxxx>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 26 +++++++++++---------------
1 file changed, 11 insertions(+), 15 deletions(-)
--- a/mm/page_alloc.c~mm-reset-numa-stats-for-boot-pagesets-v3
+++ a/mm/page_alloc.c
@@ -6242,26 +6242,22 @@ void __init setup_per_cpu_pageset(void)
{
struct pglist_data *pgdat;
struct zone *zone;
+ int __maybe_unused cpu;
for_each_populated_zone(zone)
setup_zone_pageset(zone);
#ifdef CONFIG_NUMA
- if (static_branch_likely(&vm_numa_stat_key)) {
- struct per_cpu_pageset *pcp;
- int cpu;
-
- /*
- * Unpopulated zones continue using the boot pagesets.
- * The numa stats for these pagesets need to be reset.
- * Otherwise, they will end up skewing the stats of
- * the nodes these zones are associated with.
- */
- for_each_possible_cpu(cpu) {
- pcp = &per_cpu(boot_pageset, cpu);
- memset(pcp->vm_numa_stat_diff, 0,
- sizeof(pcp->vm_numa_stat_diff));
- }
+ /*
+ * Unpopulated zones continue using the boot pagesets.
+ * The numa stats for these pagesets need to be reset.
+ * Otherwise, they will end up skewing the stats of
+ * the nodes these zones are associated with.
+ */
+ for_each_possible_cpu(cpu) {
+ struct per_cpu_pageset *pcp = &per_cpu(boot_pageset, cpu);
+ memset(pcp->vm_numa_stat_diff, 0,
+ sizeof(pcp->vm_numa_stat_diff));
}
#endif
_
Patches currently in -mm which might be from sandipan@xxxxxxxxxxxxx are
mm-reset-numa-stats-for-boot-pagesets.patch
mm-reset-numa-stats-for-boot-pagesets-v3.patch
selftests-vm-pkeys-use-sane-types-for-pkey-register.patch
selftests-vm-pkeys-add-helpers-for-pkey-bits.patch
selftests-vm-pkeys-use-the-correct-huge-page-size.patch
selftests-vm-pkeys-introduce-powerpc-support-fix.patch
selftests-vm-pkeys-override-access-right-definitions-on-powerpc-fix.patch
selftests-vm-pkeys-use-the-correct-page-size-on-powerpc.patch
selftests-vm-pkeys-fix-multilib-builds-for-x86.patch
