diff options
| author |   Zi Yan <ziy@nvidia.com> | 2024-07-24 09:01:14 -0400 |
|---|---|---|
| committer |   Andrew Morton <akpm@linux-foundation.org> | 2024-09-01 20:25:47 -0700 |
| commit | 2a28713a67fd28eedc13b32300df6b9c5a2381f5 (patch) | |
| tree | b99b41c1317c28193490fe09ecbb5863edd34140 /mm/memory.c | |
| parent | memory tiering: read last_cpupid correctly in do_huge_pmd_numa_page() (diff) | |
| download | wireguard-linux-2a28713a67fd28eedc13b32300df6b9c5a2381f5.tar.xz wireguard-linux-2a28713a67fd28eedc13b32300df6b9c5a2381f5.zip | |
memory tiering: introduce folio_use_access_time() check
If memory tiering mode is on and a folio is not in the top tier memory,
folio's cpupid field is repurposed to store page access time. Instead of
an open coded check, use a function to encapsulate the check.
Link: https://lkml.kernel.org/r/20240724130115.793641-3-ziy@nvidia.com
Signed-off-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: "Huang, Ying" <ying.huang@intel.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/memory.c')
| -rw-r--r-- | mm/memory.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/mm/memory.c b/mm/memory.c index 3c01d68065be..a3d955098a19 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -5337,8 +5337,7 @@ static vm_fault_t do_numa_page(struct vm_fault *vmf) * For memory tiering mode, cpupid of slow memory page is used * to record page access time. So use default value. */ - if ((sysctl_numa_balancing_mode & NUMA_BALANCING_MEMORY_TIERING) && - !node_is_toptier(nid)) + if (folio_use_access_time(folio)) last_cpupid = (-1 & LAST_CPUPID_MASK); else last_cpupid = folio_last_cpupid(folio); |