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authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>2017-11-18 00:31:22 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2017-11-18 01:10:04 +0100
commit64c349f4ae78723248c474531d0cbc524fc5ba77 (patch)
treeb8284ccb8224f9f4023d5b4c1caa6bc053a2c90f /mm/Makefile
parentsysvipc: make get_maxid O(1) again (diff)
downloadlinux-64c349f4ae78723248c474531d0cbc524fc5ba77.tar.xz
linux-64c349f4ae78723248c474531d0cbc524fc5ba77.zip
mm: add infrastructure for get_user_pages_fast() benchmarking
Performance of get_user_pages_fast() is critical for some workloads, but it's tricky to test it directly. This patch provides /sys/kernel/debug/gup_benchmark that helps with testing performance of it. See tools/testing/selftests/vm/gup_benchmark.c for userspace counterpart. Link: http://lkml.kernel.org/r/20170908215603.9189-2-kirill.shutemov@linux.intel.com Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thorsten Leemhuis <regressions@leemhuis.info> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Huang Ying <ying.huang@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/Makefile')
-rw-r--r--mm/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/Makefile b/mm/Makefile
index e7ebd176fb93..e669f02c5a54 100644
--- a/mm/Makefile
+++ b/mm/Makefile
@@ -80,6 +80,7 @@ obj-$(CONFIG_PAGE_COUNTER) += page_counter.o
obj-$(CONFIG_MEMCG) += memcontrol.o vmpressure.o
obj-$(CONFIG_MEMCG_SWAP) += swap_cgroup.o
obj-$(CONFIG_CGROUP_HUGETLB) += hugetlb_cgroup.o
+obj-$(CONFIG_GUP_BENCHMARK) += gup_benchmark.o
obj-$(CONFIG_MEMORY_FAILURE) += memory-failure.o
obj-$(CONFIG_HWPOISON_INJECT) += hwpoison-inject.o
obj-$(CONFIG_DEBUG_KMEMLEAK) += kmemleak.o