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| author |   Mel Gorman <mgorman@techsingularity.net> | 2019-03-05 15:44:28 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-05 21:07:16 -0800 |
| commit | c5943b9c5312d4fa23175ff146e901b865e4a60a (patch) | |
| tree | 625c23c5a4844d31b5618311b2233c91bc3072de /mm/internal.h | |
| parent | mm, compaction: shrink compact_control (diff) | |
| download | linux-dev-c5943b9c5312d4fa23175ff146e901b865e4a60a.tar.xz linux-dev-c5943b9c5312d4fa23175ff146e901b865e4a60a.zip | |
mm, compaction: rearrange compact_control
compact_control spans two cache lines with write-intensive lines on
both. Rearrange so the most write-intensive fields are in the same
cache line. This has a negligible impact on the overall performance of
compaction and is more a tidying exercise than anything.
Link: http://lkml.kernel.org/r/20190118175136.31341-3-mgorman@techsingularity.net
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: David Rientjes <rientjes@google.com>
Cc: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/internal.h')
| -rw-r--r-- | mm/internal.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/internal.h b/mm/internal.h index 5564841fce36..867af5425432 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -184,14 +184,14 @@ extern int user_min_free_kbytes; struct compact_control { struct list_head freepages; /* List of free pages to migrate to */ struct list_head migratepages; /* List of pages being migrated */ - struct zone *zone; unsigned int nr_freepages; /* Number of isolated free pages */ unsigned int nr_migratepages; /* Number of pages to migrate */ - unsigned long total_migrate_scanned; - unsigned long total_free_scanned; unsigned long free_pfn; /* isolate_freepages search base */ unsigned long migrate_pfn; /* isolate_migratepages search base */ unsigned long last_migrated_pfn;/* Not yet flushed page being freed */ + struct zone *zone; + unsigned long total_migrate_scanned; + unsigned long total_free_scanned; const gfp_t gfp_mask; /* gfp mask of a direct compactor */ int order; /* order a direct compactor needs */ int migratetype; /* migratetype of direct compactor */ |