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| author | Keith Busch <kbusch@kernel.org> | 2023-01-26 13:51:14 -0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-04-05 19:42:38 -0700 |
| commit | def8574308edbc3bca821fb965e429a2fe5f4971 (patch) | |
| tree | 415822a2abc80d0897b69c0c3e9b03a4981fa3a6 /mm/Makefile | |
| parent | 3c556d2425b04054e22045d4ef7d34f163b7a71a (diff) | |
| download | lwn-def8574308edbc3bca821fb965e429a2fe5f4971.tar.gz lwn-def8574308edbc3bca821fb965e429a2fe5f4971.zip | |
dmapool: add alloc/free performance test
Patch series "dmapool enhancements", v4.
Time spent in dma_pool alloc/free increases linearly with the number of
pages backing the pool. We can reduce this to constant time with minor
changes to how free pages are tracked.
This patch (of 12):
Provide a module that allocates and frees many blocks of various sizes and
report how long it takes. This is intended to provide a consistent way to
measure how changes to the dma_pool_alloc/free routines affect timing.
Link: https://lkml.kernel.org/r/20230126215125.4069751-1-kbusch@meta.com
Link: https://lkml.kernel.org/r/20230126215125.4069751-2-kbusch@meta.com
Signed-off-by: Keith Busch <kbusch@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/Makefile')
| -rw-r--r-- | mm/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/Makefile b/mm/Makefile index 8e105e5b3e29..3a08f5d7b178 100644 --- a/mm/Makefile +++ b/mm/Makefile @@ -103,6 +103,7 @@ obj-$(CONFIG_MEMCG) += swap_cgroup.o endif obj-$(CONFIG_CGROUP_HUGETLB) += hugetlb_cgroup.o obj-$(CONFIG_GUP_TEST) += gup_test.o +obj-$(CONFIG_DMAPOOL_TEST) += dmapool_test.o obj-$(CONFIG_MEMORY_FAILURE) += memory-failure.o obj-$(CONFIG_HWPOISON_INJECT) += hwpoison-inject.o obj-$(CONFIG_DEBUG_KMEMLEAK) += kmemleak.o |