+ selftests-damon-_chk_dependency-get-debugfs-mount-point-from-proc-mounts.patch added to mm-unstable branch

+ selftests-damon-_chk_dependency-get-debugfs-mount-point-from-proc-mounts.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: selftests/damon/_chk_dependency: get debugfs mount point from /proc/mounts
has been added to the -mm mm-unstable branch.  Its filename is
     selftests-damon-_chk_dependency-get-debugfs-mount-point-from-proc-mounts.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-damon-_chk_dependency-get-debugfs-mount-point-from-proc-mounts.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: SeongJae Park <sj@kernel.org>
Subject: selftests/damon/_chk_dependency: get debugfs mount point from /proc/mounts
Date: Wed, 7 Feb 2024 12:31:34 -0800

DAMON debugfs selftests dependency checker assumes debugfs would be
mounted at /sys/kernel/debug.  That would be ok for many cases, but some
systems might mounted the file system on some different places.  Parse the
real mount point using /proc/mounts file.

Link: https://lkml.kernel.org/r/20240207203134.69976-9-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 tools/testing/selftests/damon/_chk_dependency.sh |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

--- a/tools/testing/selftests/damon/_chk_dependency.sh~selftests-damon-_chk_dependency-get-debugfs-mount-point-from-proc-mounts
+++ a/tools/testing/selftests/damon/_chk_dependency.sh
@@ -4,7 +4,14 @@
 # Kselftest framework requirement - SKIP code is 4.
 ksft_skip=4
 
-DBGFS=/sys/kernel/debug/damon
+DBGFS=$(grep debugfs /proc/mounts --max-count 1 | awk '{print $2}')
+if [ "$DBGFS" = "" ]
+then
+	echo "debugfs not mounted"
+	exit $ksft_skip
+fi
+
+DBGFS+="/damon"
 
 if [ $EUID -ne 0 ];
 then
_

Patches currently in -mm which might be from sj@kernel.org are

mm-damon-sysfs-schemes-fix-wrong-damos-tried-regions-update-timeout-setup.patch
mm-damon-core-check-apply-interval-in-damon_do_apply_schemes.patch
docs-admin-guide-mm-damon-usage-use-sysfs-interface-for-tracepoints-example.patch
mm-damon-rename-config_damon_dbgfs-to-damon_dbgfs_deprecated.patch
mm-damon-dbgfs-implement-deprecation-notice-file.patch
mm-damon-dbgfs-make-debugfs-interface-deprecation-message-a-macro.patch
docs-admin-guide-mm-damon-usage-document-deprecated-file-of-damon-debugfs-interface.patch
selftets-damon-prepare-for-monitor_on-file-renaming.patch
mm-damon-dbgfs-rename-monitor_on-file-to-monitor_on_deprecated.patch
docs-admin-guide-mm-damon-usage-update-for-monitor_on-renaming.patch
docs-translations-damon-usage-update-for-monitor_on-renaming.patch
mm-damon-sysfs-handle-state-file-inputs-for-every-sampling-interval-if-possible.patch
selftests-damon-_damon_sysfs-support-damos-quota.patch
selftests-damon-_damon_sysfs-support-damos-stats.patch
selftests-damon-_damon_sysfs-support-damos-apply-interval.patch
selftests-damon-add-a-test-for-damos-quota.patch
selftests-damon-add-a-test-for-damos-apply-intervals.patch
selftests-damon-add-a-test-for-a-race-between-target_ids_read-and-dbgfs_before_terminate.patch
selftests-damon-add-a-test-for-the-pid-leak-of-dbgfs_target_ids_write.patch
selftests-damon-_chk_dependency-get-debugfs-mount-point-from-proc-mounts.patch