diff options
| author | Kefeng Wang <wangkefeng.wang@huawei.com> | 2025-10-23 19:37:34 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-11-16 17:28:03 -0800 |
| commit | 03aa8e4f273284a6abf28c0d86529cf3947328b2 (patch) | |
| tree | 290bad89316a31d5e0761a7a774e2d502cbf878c /tools/perf/scripts/python/stackcollapse.py | |
| parent | d945667dcb1996ddf00ffa8408b579e4ce573652 (diff) | |
| download | linux-03aa8e4f273284a6abf28c0d86529cf3947328b2.tar.gz linux-03aa8e4f273284a6abf28c0d86529cf3947328b2.zip | |
mm: mprotect: always skip dma pinned folio in prot_numa_skip()
Patch series "mm: some optimizations for prot numa", v5.
This patch (of 4):
If the folio (even not CoW folio) is dma pinned, it can't be migrated due
to the elevated reference count. So always skip a pinned folio to avoid
wasting cycles when folios are migrated.
Link: https://lkml.kernel.org/r/20251023113737.3572790-1-wangkefeng.wang@huawei.com
Link: https://lkml.kernel.org/r/20251023113737.3572790-2-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Acked-by: Zi Yan <ziy@nvidia.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Barry Song <baohua@kernel.org>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Reviewed-by: Lance Yang <lance.yang@linux.dev>
Reviewed-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions