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| author | Chen Wandun <chenwandun@huawei.com> | 2022-01-14 14:08:10 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-01-15 16:30:30 +0200 |
| commit | 721fb891ad0b3956d5c168b2931e3e5e4fb7ca40 (patch) | |
| tree | 410159400928e48523ce2f2f0dd6b1dcbb9395c6 /.cocciconfig | |
| parent | e4b424b7ec8791087375bb1f2480a3ba05d21e0b (diff) | |
| download | linux-721fb891ad0b3956d5c168b2931e3e5e4fb7ca40.tar.gz | |
mm/page_isolation: unset migratetype directly for non Buddy page
In unset_migratetype_isolate(), we can bypass the call to
move_freepages_block() for non-buddy pages.
It will save a few cpu cycles for some situations such as cma and
hugetlb when allocating continue pages, in these situation function
alloc_contig_pages will be called.
alloc_contig_pages
__alloc_contig_migrate_range
isolate_freepages_range ==> pages has been remove from buddy
undo_isolate_page_range
unset_migratetype_isolate ==> can directly set migratetype
[osalvador@suse.de: changelog tweak]
Link: https://lkml.kernel.org/r/20211229033649.2760586-1-chenwandun@huawei.com
Fixes: 3c605096d315 ("mm/page_alloc: restrict max order of merging on isolated pageblock")
Signed-off-by: Chen Wandun <chenwandun@huawei.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Wang Kefeng <wangkefeng.wang@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '.cocciconfig')
0 files changed, 0 insertions, 0 deletions