linux.git/tools/testing/selftests/damon/debugfs_attrs.sh, branch vsnprintf

selftests/damon: Add executable permission to test scripts

2023-09-27T01:24:44+00:00

When running the test for the damon subsystem, there are a lot of
warnings because test scripts do not have executable permission,
for example:

Warning: file debugfs_attrs.sh is not executable
Warning: file debugfs_schemes.sh is not executable
Warning: file debugfs_target_ids.sh is not executable
...

This patch adds executable permission to test scripts to eliminate
these warnings.

Signed-off-by: Juntong Deng 
Reviewed-by: SeongJae Park 
Signed-off-by: Shuah Khan

selftests/damon: split test cases

2021-12-11T01:10:56+00:00

Currently, the single test program, debugfs.sh, contains all test cases
for DAMON.  When one of the cases fails, finding which case is failed
from the test log is not so easy, and all remaining tests will be
skipped.  To improve the situation, this commit splits the single
program into small test programs having their own names.

Link: https://lkml.kernel.org/r/20211201150440.1088-12-sj@kernel.org
Signed-off-by: SeongJae Park 
Cc: Brendan Higgins 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

selftests/damon: test debugfs file reads/writes with huge count

2021-12-11T01:10:56+00:00

DAMON debugfs interface users were able to trigger warning by writing
some files with arbitrarily large 'count' parameter.  The issue is fixed
with commit db7a347b26fe ("mm/damon/dbgfs: use '__GFP_NOWARN' for
user-specified size buffer allocation").  This commit adds a test case
for the issue in DAMON selftests to avoid future regressions.

Link: https://lkml.kernel.org/r/20211201150440.1088-11-sj@kernel.org
Signed-off-by: SeongJae Park 
Cc: Brendan Higgins 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

selftests/damon: test wrong DAMOS condition ranges input

2021-12-11T01:10:56+00:00

A patch titled "mm/damon/schemes: add the validity judgment of
thresholds"[1] makes DAMON debugfs interface to validate DAMON scheme
inputs.  This commit adds a test case for the validation logic in DAMON
selftests.

[1] https://lore.kernel.org/linux-mm/d78360e52158d786fcbf20bc62c96785742e76d3.1637239568.git.xhao@linux.alibaba.com/

Link: https://lkml.kernel.org/r/20211201150440.1088-10-sj@kernel.org
Signed-off-by: SeongJae Park 
Cc: Brendan Higgins 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

selftests/damon: test DAMON enabling with empty target_ids case

2021-12-11T01:10:56+00:00

DAMON debugfs didn't check empty targets when starting monitoring, and
the issue is fixed with commit b5ca3e83ddb0 ("mm/damon/dbgfs: add
adaptive_targets list check before enable monitor_on").  To avoid future
regression, this commit adds a test case for that in DAMON selftests.

Link: https://lkml.kernel.org/r/20211201150440.1088-9-sj@kernel.org
Signed-off-by: SeongJae Park 
Cc: Brendan Higgins 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

selftests/damon: skip test if DAMON is running

2021-12-11T01:10:56+00:00

Testing the DAMON debugfs files while DAMON is running makes no sense,
as any write to the debugfs files will fail.  This commit makes the test
be skipped in this case.

Link: https://lkml.kernel.org/r/20211201150440.1088-8-sj@kernel.org
Signed-off-by: SeongJae Park 
Cc: Brendan Higgins 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

selftests/damon: support watermarks

2021-11-06T20:30:45+00:00

This updates DAMON selftests for 'schemes' debugfs file to reflect the
changes in the format.

Link: https://lkml.kernel.org/r/20211019150731.16699-14-sj@kernel.org
Signed-off-by: SeongJae Park 
Cc: Amit Shah 
Cc: Benjamin Herrenschmidt 
Cc: David Hildenbrand 
Cc: David Rientjes 
Cc: David Woodhouse 
Cc: Greg Thelen 
Cc: Jonathan Cameron 
Cc: Jonathan Corbet 
Cc: Leonard Foerster 
Cc: Marco Elver 
Cc: Markus Boehme 
Cc: Shakeel Butt 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

tools/selftests/damon: update for regions prioritization of schemes

2021-11-06T20:30:45+00:00

This updates the DAMON selftests for 'schemes' debugfs file, as the file
format is updated.

Link: https://lkml.kernel.org/r/20211019150731.16699-11-sj@kernel.org
Signed-off-by: SeongJae Park 
Cc: Amit Shah 
Cc: Benjamin Herrenschmidt 
Cc: David Hildenbrand 
Cc: David Rientjes 
Cc: David Woodhouse 
Cc: Greg Thelen 
Cc: Jonathan Cameron 
Cc: Jonathan Corbet 
Cc: Leonard Foerster 
Cc: Marco Elver 
Cc: Markus Boehme 
Cc: Shakeel Butt 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mm/damon/selftests: support schemes quotas

2021-11-06T20:30:45+00:00

This updates DAMON selftests to support updated schemes debugfs file
format for the quotas.

Link: https://lkml.kernel.org/r/20211019150731.16699-7-sj@kernel.org
Signed-off-by: SeongJae Park 
Cc: Amit Shah 
Cc: Benjamin Herrenschmidt 
Cc: David Hildenbrand 
Cc: David Rientjes 
Cc: David Woodhouse 
Cc: Greg Thelen 
Cc: Jonathan Cameron 
Cc: Jonathan Corbet 
Cc: Leonard Foerster 
Cc: Marco Elver 
Cc: Markus Boehme 
Cc: Shakeel Butt 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

selftests/damon: add 'schemes' debugfs tests

2021-11-06T20:30:44+00:00

This adds simple selftets for 'schemes' debugfs file of DAMON.

Link: https://lkml.kernel.org/r/20211001125604.29660-7-sj@kernel.org
Signed-off-by: SeongJae Park 
Cc: Amit Shah 
Cc: Benjamin Herrenschmidt 
Cc: David Hildenbrand 
Cc: David Rienjes 
Cc: David Woodhouse 
Cc: Greg Thelen 
Cc: Jonathan Cameron 
Cc: Jonathan Corbet 
Cc: Leonard Foerster 
Cc: Marco Elver 
Cc: Markus Boehme 
Cc: Shakeel Butt 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds