selftests/mm: have the harness run each test category separately

At present the mm selftests are integrated into the kselftest harness by
having it run run_vmtest.sh and letting it pick it's default set of tests
to invoke, rather than by telling the kselftest framework about each test
program individually as is more standard.  This has some unfortunate
interactions with the kselftest harness:

 - If any of the tests hangs the harness will kill the entire mm
   selftests run rather than just the individual test, meaning no
   further tests get run.
 - The timeout applied by the harness is applied to the whole run rather
   than an individual test which frequently leads to the suite not being
   completed in production testing.

Deploy a crude but effective mitigation for these issues by telling the
kselftest framework to run each of the test categories that run_vmtests.sh
has separately.  Since kselftest really wants to run test programs this is
done by providing a trivial wrapper script for each categorty that invokes
run_vmtest.sh, this is not a thing of great elegence but it is clear and
simple.  Since run_vmtests.sh is doing runtime support detection, scenario
enumeration and setup for many of the tests we can't consistently tell the
framework about the individual test programs.

This has the side effect of reordering the tests, hopefully the testing
is not overly sensitive to this.

Link: https://lkml.kernel.org/r/20260123-selftests-mm-run-suites-separately-v2-1-3e934edacbfa@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

tools/testing/selftests/mm/Makefile

@@ -1,6 +1,10 @@
 # SPDX-License-Identifier: GPL-2.0
 # Makefile for mm selftests
 
+# IMPORTANT: If you add a new test CATEGORY please add a simple wrapper
+# script so kunit knows to run it, and add it to the list below.
+# If you do not YOUR TESTS WILL NOT RUN IN THE CI.
+
 LOCAL_HDRS += $(selfdir)/mm/local_config.h $(top_srcdir)/mm/gup_test.h
 LOCAL_HDRS += $(selfdir)/mm/mseal_helpers.h
 
@@ -139,7 +143,33 @@ TEST_GEN_FILES += va_high_addr_switch
 TEST_GEN_FILES += write_to_hugetlbfs
 endif
 
-TEST_PROGS := run_vmtests.sh
+TEST_PROGS += ksft_compaction.sh
+TEST_PROGS += ksft_cow.sh
+TEST_PROGS += ksft_gup_test.sh
+TEST_PROGS += ksft_hmm.sh
+TEST_PROGS += ksft_hugetlb.sh
+TEST_PROGS += ksft_hugevm.sh
+TEST_PROGS += ksft_ksm.sh
+TEST_PROGS += ksft_ksm_numa.sh
+TEST_PROGS += ksft_madv_guard.sh
+TEST_PROGS += ksft_madv_populate.sh
+TEST_PROGS += ksft_memfd_secret.sh
+TEST_PROGS += ksft_migration.sh
+TEST_PROGS += ksft_mkdirty.sh
+TEST_PROGS += ksft_mlock.sh
+TEST_PROGS += ksft_mmap.sh
+TEST_PROGS += ksft_mremap.sh
+TEST_PROGS += ksft_pagemap.sh
+TEST_PROGS += ksft_pfnmap.sh
+TEST_PROGS += ksft_pkey.sh
+TEST_PROGS += ksft_process_madv.sh
+TEST_PROGS += ksft_process_mrelease.sh
+TEST_PROGS += ksft_rmap.sh
+TEST_PROGS += ksft_soft_dirty.sh
+TEST_PROGS += ksft_thp.sh
+TEST_PROGS += ksft_userfaultfd.sh
+TEST_PROGS += ksft_vma_merge.sh
+TEST_PROGS += ksft_vmalloc.sh
 
 TEST_FILES := test_vmalloc.sh
 TEST_FILES += test_hmm.sh
@@ -147,6 +177,7 @@ TEST_FILES += va_high_addr_switch.sh
 TEST_FILES += charge_reserved_hugetlb.sh
 TEST_FILES += hugetlb_reparenting_test.sh
 TEST_FILES += test_page_frag.sh
+TEST_FILES += run_vmtests.sh
 
 # required by charge_reserved_hugetlb.sh
 TEST_FILES += write_hugetlb_memory.sh

tools/testing/selftests/mm/ksft_compaction.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t compaction

tools/testing/selftests/mm/ksft_cow.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t cow

tools/testing/selftests/mm/ksft_gup_test.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t gup_test

tools/testing/selftests/mm/ksft_hmm.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t hmm

tools/testing/selftests/mm/ksft_hugetlb.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t hugetlb

tools/testing/selftests/mm/ksft_hugevm.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t hugevm

tools/testing/selftests/mm/ksft_ksm.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t ksm

tools/testing/selftests/mm/ksft_ksm_numa.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t ksm_numa

tools/testing/selftests/mm/ksft_madv_guard.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t madv_guard

tools/testing/selftests/mm/ksft_madv_populate.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t madv_populate

tools/testing/selftests/mm/ksft_mdwe.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t mdwe

tools/testing/selftests/mm/ksft_memfd_secret.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t memfd_secret

tools/testing/selftests/mm/ksft_migration.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t migration

tools/testing/selftests/mm/ksft_mkdirty.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t mkdirty

tools/testing/selftests/mm/ksft_mlock.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t mlock

tools/testing/selftests/mm/ksft_mmap.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t mmap

tools/testing/selftests/mm/ksft_mremap.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t mremap

tools/testing/selftests/mm/ksft_page_frag.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t page_frag

tools/testing/selftests/mm/ksft_pagemap.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t pagemap

tools/testing/selftests/mm/ksft_pfnmap.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t pfnmap

tools/testing/selftests/mm/ksft_pkey.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t pkey

tools/testing/selftests/mm/ksft_process_madv.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t mmap

tools/testing/selftests/mm/ksft_process_mrelease.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t process_mrelease

tools/testing/selftests/mm/ksft_rmap.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t rmap

tools/testing/selftests/mm/ksft_soft_dirty.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t soft_dirty

tools/testing/selftests/mm/ksft_thp.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t thp

tools/testing/selftests/mm/ksft_userfaultfd.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t userfaultfd

tools/testing/selftests/mm/ksft_vma_merge.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t vma_merge

tools/testing/selftests/mm/ksft_vmalloc.sh

@@ -0,0 +1,4 @@
+#!/bin/sh -e
+# SPDX-License-Identifier: GPL-2.0
+
+./run_vmtests.sh -t vmalloc

tools/testing/selftests/mm/run_vmtests.sh

@@ -2,6 +2,10 @@
 # SPDX-License-Identifier: GPL-2.0
 # Please run as root
 
+# IMPORTANT: If you add a new test CATEGORY please add a simple wrapper
+# script so kunit knows to run it, and add it to the list below.
+# If you do not YOUR TESTS WILL NOT RUN IN THE CI.
+
 # Kselftest framework requirement - SKIP code is 4.
 ksft_skip=4