linux-toradex.git/tools/testing/selftests/memory-hotplug, branch v6.3-rc5

selftests/memory-hotplug: Remove the redundant warning information

2022-10-18T20:21:18+00:00

Remove the redundant warning information of online_all_offline_memory()
since there is a warning in online_memory_expect_success().

Signed-off-by: Zhao Gongyi 
Reviewed-by: David Hildenbrand 
Signed-off-by: Shuah Khan

selftests/memory-hotplug: Adjust log info for maintainability

2022-10-07T16:32:10+00:00

Redirect misleading error message to /dev/null for
offline_memory_expect_success(), And, add an output
for online->offline test.

Signed-off-by: Zhao Gongyi 
Acked-by: David Hildenbrand 
Signed-off-by: Shuah Khan

selftests/memory-hotplug: Restore memory before exit

2022-10-07T16:32:04+00:00

Some momory will be left in offline state when calling
offline_memory_expect_fail() failed. Restore it before exit.

Signed-off-by: Zhao Gongyi 
Signed-off-by: Shuah Khan

selftests/memory-hotplug: Add checking after online or offline

2022-10-07T16:31:58+00:00

Add checking for online_memory_expect_success()/
offline_memory_expect_success()/offline_memory_expect_fail(), or
the test would exit 0 although the functions return 1.

Signed-off-by: Zhao Gongyi 
Reviewed-by: David Hildenbrand 
Signed-off-by: Shuah Khan

mm/memory_hotplug: remove CONFIG_MEMORY_HOTPLUG_SPARSE

2021-11-06T20:30:42+00:00

CONFIG_MEMORY_HOTPLUG depends on CONFIG_SPARSEMEM, so there is no need for
CONFIG_MEMORY_HOTPLUG_SPARSE anymore; adjust all instances to use
CONFIG_MEMORY_HOTPLUG and remove CONFIG_MEMORY_HOTPLUG_SPARSE.

Link: https://lkml.kernel.org/r/20210929143600.49379-3-david@redhat.com
Signed-off-by: David Hildenbrand 
Acked-by: Shuah Khan 	[kselftest]
Acked-by: Greg Kroah-Hartman 
Acked-by: Oscar Salvador 
Cc: Alex Shi 
Cc: Andy Lutomirski 
Cc: Benjamin Herrenschmidt 
Cc: Borislav Petkov 
Cc: Dave Hansen 
Cc: "H. Peter Anvin" 
Cc: Ingo Molnar 
Cc: Jason Wang 
Cc: Jonathan Corbet 
Cc: Michael Ellerman 
Cc: "Michael S. Tsirkin" 
Cc: Michal Hocko 
Cc: Mike Rapoport 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: "Rafael J. Wysocki" 
Cc: Thomas Gleixner 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

selftests: memory-hotplug: avoid spamming logs with dump_page(), ratio limit hot-remove error test

2021-07-12T20:20:01+00:00

While the offline memory test obey ratio limit, the same test with
error injection does not and tries to offline all the hotpluggable
memory, spamming system logs with hundreds of thousands of dump_page()
entries, slowing system down (to the point the test itself timesout and
gets terminated) and excessive fs occupation:

...
[ 9784.393354] page:c00c0000007d1b40 refcount:3 mapcount:0 mapping:c0000001fc03e950 index:0xe7b
[ 9784.393355] def_blk_aops
[ 9784.393356] flags: 0x3ffff800002062(referenced|active|workingset|private)
[ 9784.393358] raw: 003ffff800002062 c0000001b9343a68 c0000001b9343a68 c0000001fc03e950
[ 9784.393359] raw: 0000000000000e7b c000000006607b18 00000003ffffffff c00000000490d000
[ 9784.393359] page dumped because: migration failure
[ 9784.393360] page->mem_cgroup:c00000000490d000
[ 9784.393416] migrating pfn 1f46d failed ret:1
...

$ grep "page dumped because: migration failure" /var/log/kern.log | wc -l
2405558

$ ls -la /var/log/kern.log
-rw-r----- 1 syslog adm 2256109539 Jun 30 14:19 /var/log/kern.log

Signed-off-by: Paolo Pisati 
Acked-by: Krzysztof Kozlowski 
Signed-off-by: Shuah Khan

selftests: memory-hotplug: add required configs

2018-09-05T16:58:31+00:00

add CONFIG_MEMORY_HOTREMOVE=y in config
without this config, /sys/devices/system/memory/memory*/removable
always return 0, I endup getting an early skip during test

Signed-off-by: Lei Yang 
Signed-off-by: Shuah Khan (Samsung OSG)

selftests: memory-hotplug: return Kselftest Skip code for skipped tests

2018-05-30T21:29:06+00:00

When memory-hotplug test is skipped because of unmet dependencies and/or
unsupported configuration, it returns non-zero value hich is treated as a
fail by the Kselftest framework. This leads to false negative result even
when the test could not be run.

Change it to return kselftest skip code when a test gets skipped to
clearly report that the test could not be run.

Kselftest framework SKIP code is 4 and the framework prints appropriate
messages to indicate that the test is skipped.

Signed-off-by: Shuah Khan (Samsung OSG)

selftests: memory-hotplug: delete RUN_TESTS and EMIT_TESTS overrides

2018-05-30T21:21:52+00:00

Delete RUN_TESTS and EMIT_TESTS overrides and use common defines in
lib.mk. Common defines work after making the change the test to run
with ratio=2 as the default mode to be able to invoke the test without
the "-r 2" argument from the common RUN_TESTS and EMIT_TESTS.

The run_full_tests target now calls the test with "-r 10".

Signed-off-by: Shuah Khan (Samsung OSG) 
Reviewed-by: Anders Roxell 
Reviewed-by: Lei.Yang@windriver.com
Signed-off-by: Shuah Khan (Samsung OSG)

selftests: memory-hotplug: fix emit_tests regression

2018-03-02T17:12:59+00:00

Commit 16c513b13477
("selftests: memory-hotplug: silence test command echo")

introduced regression in emit_tests and results in the following
failure when selftests are installed and run. Fix it.

Running tests in memory-hotplug
========================================
./run_kselftest.sh: line 121: @./mem-on-off-test.sh: No such file or
directory
selftests: memory-hotplug [FAIL]

Fixes: 16c513b13477 (selftests: memory-hotplug: silence test command echo")
Reported-by: Naresh Kamboju 
Tested-by: Anders Roxell 
Signed-off-by: Shuah Khan