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selftests: add mincore() tests

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Add a test suite for the mincore() syscall.  It tests most of its use
cases as well as its interface.

Tests implemented:

  - basic interface test
  - behavior on anonymous mappings
  - behavior on anonymous mappings with huge tlb pages
  - file-backed mapping with a regular file
  - file-backed mapping with a tmpfs file

Signed-off-by: Ricardo Cañuelo <ricardo.canuelo@collabora.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/20200728100450.4065-1-ricardo.canuelo@collabora.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ricardo Cañuelo
2020-08-06 23:23:51 -07:00
committed by Linus Torvalds
parent 349d9fbb0b
commit 7a309195d1
4 changed files with 370 additions and 0 deletions
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tools/testing/selftests/Makefile
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@@ -32,6 +32,7 @@ TARGETS += lkdtm
TARGETS += membarrier
TARGETS += memfd
TARGETS += memory-hotplug
TARGETS += mincore
TARGETS += mount
TARGETS += mqueue
TARGETS += net