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mm/migrate: rename migration reason MR_CMA to MR_CONTIG_RANGE

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alloc_contig_range() initiates compaction and eventual migration for the
purpose of either CMA or HugeTLB allocations.  At present, the reason
code remains the same MR_CMA for either of these cases.  Let's make it
MR_CONTIG_RANGE which will appropriately reflect the reason code in both
these cases.

Link: http://lkml.kernel.org/r/20180202091518.18798-1-khandual@linux.vnet.ibm.com
Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Anshuman Khandual 2018-04-05 16:22:08 -07:00 committed by Linus Torvalds
parent 57a7702b12
commit 310253514b
4 changed files with 4 additions and 4 deletions
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2
arch/powerpc/mm/mmu_context_iommu.c
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@ -112,7 +112,7 @@ static int mm_iommu_move_page_from_cma(struct page *page)
put_page(page); /* Drop the gup reference */
ret = migrate_pages(&cma_migrate_pages, new_iommu_non_cma_page,
NULL, 0, MIGRATE_SYNC, MR_CMA);
NULL, 0, MIGRATE_SYNC, MR_CONTIG_RANGE);
if (ret) {
if (!list_empty(&cma_migrate_pages))
putback_movable_pages(&cma_migrate_pages);

2
include/linux/migrate.h
View File

@ -25,7 +25,7 @@ enum migrate_reason {
MR_SYSCALL, /* also applies to cpusets */
MR_MEMPOLICY_MBIND,
MR_NUMA_MISPLACED,
MR_CMA,
MR_CONTIG_RANGE,
MR_TYPES
};

2
include/trace/events/migrate.h
View File

@ -20,7 +20,7 @@
EM( MR_SYSCALL, "syscall_or_cpuset") \
EM( MR_MEMPOLICY_MBIND, "mempolicy_mbind") \
EM( MR_NUMA_MISPLACED, "numa_misplaced") \
EMe(MR_CMA, "cma")
EMe(MR_CONTIG_RANGE, "contig_range")
/*
* First define the enums in the above macros to be exported to userspace

2
mm/page_alloc.c
View File

@ -7591,7 +7591,7 @@ static int __alloc_contig_migrate_range(struct compact_control *cc,
cc->nr_migratepages -= nr_reclaimed;
ret = migrate_pages(&cc->migratepages, alloc_migrate_target,
NULL, 0, cc->mode, MR_CMA);
NULL, 0, cc->mode, MR_CONTIG_RANGE);
}
if (ret < 0) {
putback_movable_pages(&cc->migratepages);