[PATCH v2 i-g-t 2/6] tests: Add core_debugfs
Peter Senna Tschudin
peter.senna at linux.intel.com
Fri Jun 13 10:51:41 UTC 2025
Introduce core_debugfs that is expected to work with any GPU, not
limited to i915 and Xe. The test attempts to open every file in debugfs
associated with the GPU.
Cc: marcin.bernatowicz at intel.com
Cc: kamil.konieczny at linux.intel.com
Cc: katarzyna.piecielska at intel.com
Cc: zbigniew.kempczynski at intel.com
Cc: ewelina.musial at intel.com
Signed-off-by: Peter Senna Tschudin <peter.senna at linux.intel.com>
---
v2:
- changed style of comparison to NULL
docs/code_coverage.md | 18 ++++----
scripts/code_cov_selftest.sh | 2 +-
tests/core_debugfs.c | 54 ++++++++++++++++++++++++
tests/intel-ci/fast-feedback.testlist | 1 +
tests/intel-ci/xe-fast-feedback.testlist | 1 +
tests/meson.build | 1 +
6 files changed, 67 insertions(+), 10 deletions(-)
create mode 100644 tests/core_debugfs.c
diff --git a/docs/code_coverage.md b/docs/code_coverage.md
index 031611e69..236dbc70b 100644
--- a/docs/code_coverage.md
+++ b/docs/code_coverage.md
@@ -162,23 +162,23 @@ For each script, the igt_runner passes just one parameter: the results
directory + the test name.
For instance, if it is needed to run a test called
-`intel_sysfs_debugfs (i915-debugfs-read-all-entries)` using `code_cov_capture`
+`core_debugfs (debugfs-read-all-entries)` using `code_cov_capture`
parameter, e. g.:
```
-$ echo "igt at intel_sysfs_debugfs@i915-debugfs-read-all-entries" > my.testlist
+$ echo "igt at core_debugfs@debugfs-read-all-entries" > my.testlist
$ ./scripts/run-tests.sh -T my.testlist -k ~/linux -c code_cov_capture -P
Found test list: "/basedir/igt/build/tests/test-list.txt"
-[31410.499969] [1/1] intel_sysfs_debugfs (i915-debugfs-read-all-entries)
+[31410.499969] [1/1] core_debugfs (debugfs-read-all-entries)
[31411.060446] Storing code coverage results...
-[31418.01] Code coverage wrote to /basedir/igt/results/code_cov/intel_sysfs_debugfs_i915_debugfs_read_all_entries.info
+[31418.01] Code coverage wrote to /basedir/igt/results/code_cov/core_debugfs_debugfs_read_all_entries.info
Done.
```
The script will be called as:
```
-code_cov_capture results/code_cov/intel_sysfs_debugfs_i915_debugfs_read_all_entries
+code_cov_capture results/code_cov/core_debugfs_debugfs_read_all_entries
```
Please notice that any character that it is not a number nor a letter at the
@@ -376,7 +376,7 @@ OUT_DIR="${HOME}/results"
mkdir -p $OUT_DIR/html
-echo "igt at intel_sysfs_debugfs@i915-debugfs-read-all-entries" > $TESTLIST
+echo "igt at core_debugfs@debugfs-read-all-entries" > $TESTLIST
echo "igt at core_auth@basic-auth" >> $TESTLIST
echo "igt at gem_exec_basic@basic" >> $TESTLIST
@@ -401,8 +401,8 @@ genhtml -q -s --legend --branch-coverage $OUT_DIR/results.info
Running such script produces the following output:
```
-[3622.993304] [1/3] intel_sysfs_debugfs (i915-debugfs-read-all-entries)
-[3631.95] Code coverage wrote to results/code_cov/intel_sysfs_debugfs_i915_debugfs_read_all_entries.info
+[3622.993304] [1/3] core_debugfs (debugfs-read-all-entries)
+[3631.95] Code coverage wrote to results/code_cov/core_debugfs_debugfs_read_all_entries.info
[3626.217016] Storing code coverage results...
[3631.957998] [2/3] core_auth (basic-auth)
[3638.03] Code coverage wrote to results/code_cov/core_auth_basic_auth.info
@@ -419,7 +419,7 @@ core_auth_basic_auth.info:
Ignored......: non-drm headers and source files where none of its code ran.
Source files.: 23.27% (165 of 709 total), 29.57% (165 of 558 filtered)
-intel_sysfs_debugfs_i915_debugfs_read_all_entries.info:
+core_debugfs_debugfs_read_all_entries.info:
lines......: 19.3% (20266 of 104802 lines)
functions..: 17.5% (1922 of 10971 functions)
branches...: 12.7% (9462 of 74555 branches)
diff --git a/scripts/code_cov_selftest.sh b/scripts/code_cov_selftest.sh
index bc5ef7458..374068140 100755
--- a/scripts/code_cov_selftest.sh
+++ b/scripts/code_cov_selftest.sh
@@ -13,7 +13,7 @@ if [ -z "$IGT_KERNEL_TREE" ] ; then
exit 1
fi
-TEST="igt at intel_sysfs_debugfs@i915-debugfs-read-all-entries"
+TEST="igt at core_debugfs@debugfs-read-all-entries"
TESTLIST="my_tests.testlist"
GATHER="scripts/code_cov_gather_on_test.py"
diff --git a/tests/core_debugfs.c b/tests/core_debugfs.c
new file mode 100644
index 000000000..278cb4f6d
--- /dev/null
+++ b/tests/core_debugfs.c
@@ -0,0 +1,54 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2025 Intel Corporation
+ */
+
+#include "igt.h"
+#include "igt_debugfs.h"
+#include "igt_dir.h"
+
+/**
+ * TEST: debugfs test
+ * Description: Read entries from debugfs
+ * Category: Core
+ * Mega feature: General Core features
+ * Sub-category: uapi
+ * Functionality: debugfs
+ * Feature: core
+ * Test category: uapi
+ *
+ * SUBTEST: debugfs-read-all-entries
+ * Description: Read all entries from debugfs path validating debugfs entries
+ */
+
+IGT_TEST_DESCRIPTION("Read entries from debugfs");
+
+igt_main
+{
+ int debugfs = -1;
+ int fd = -1;
+ igt_dir_t *igt_dir = NULL;
+
+ igt_fixture {
+ fd = drm_open_driver_master(DRIVER_ANY);
+ debugfs = igt_debugfs_dir(fd);
+ igt_require(debugfs >= 0);
+
+ igt_dir = igt_dir_create(debugfs);
+ igt_require(igt_dir);
+
+ kmstest_set_vt_graphics_mode();
+ }
+
+ igt_describe("Read all entries from debugfs path.");
+ igt_subtest("debugfs-read-all-entries") {
+ igt_dir_scan_dirfd(igt_dir, -1);
+ igt_dir_process_files(igt_dir, NULL, NULL);
+ }
+
+ igt_fixture {
+ igt_dir_destroy(igt_dir);
+ close(debugfs);
+ drm_close_driver(fd);
+ }
+}
diff --git a/tests/intel-ci/fast-feedback.testlist b/tests/intel-ci/fast-feedback.testlist
index 82395e7ea..7902bbdae 100644
--- a/tests/intel-ci/fast-feedback.testlist
+++ b/tests/intel-ci/fast-feedback.testlist
@@ -53,6 +53,7 @@ igt at i915_getparams_basic@basic-subslice-total
igt at i915_hangman@error-state-basic
igt at i915_pciid
igt at intel_hwmon
+igt at core_debugfs@debugfs-read-all-entries
igt at intel_sysfs_debugfs@i915-debugfs-read-all-entries
igt at intel_sysfs_debugfs@i915-sysfs-read-all-entries
igt at kms_addfb_basic@addfb25-4-tiled
diff --git a/tests/intel-ci/xe-fast-feedback.testlist b/tests/intel-ci/xe-fast-feedback.testlist
index d9d180d87..5fb233fb4 100644
--- a/tests/intel-ci/xe-fast-feedback.testlist
+++ b/tests/intel-ci/xe-fast-feedback.testlist
@@ -7,6 +7,7 @@ igt at fbdev@nullptr
igt at fbdev@read
igt at fbdev@write
+igt at core_debugfs@debugfs-read-all-entries
igt at intel_sysfs_debugfs@xe-base
igt at intel_sysfs_debugfs@xe-debugfs-read-all-entries
igt at intel_sysfs_debugfs@xe-forcewake
diff --git a/tests/meson.build b/tests/meson.build
index 55bcf57ec..fa62cbeb9 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -1,5 +1,6 @@
test_progs = [
'core_auth',
+ 'core_debugfs',
'core_getclient',
'core_getstats',
'core_getversion',
--
2.43.0
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