[PATCH v2 i-g-t 4/6] tests: Add core_sysfs

[Peter Senna Tschudin <peter.senna@linux.intel.com>]

core_sysfs is GPU-agnostic test designed to work with any GPU, not
limited to i915 and Xe. The test scans the sysfs directory associated
with the GPU, reads all files, and discards the content.

Cc: marcin.bernatowicz@intel.com
Cc: kamil.konieczny@linux.intel.com
Cc: katarzyna.piecielska@intel.com
Cc: zbigniew.kempczynski@intel.com
Cc: ewelina.musial@intel.com
Signed-off-by: Peter Senna Tschudin <peter.senna@linux.intel.com>
---
v2:
 - changed style of comparison to NULL

 tests/core_sysfs.c                       | 58 ++++++++++++++++++++++++
 tests/intel-ci/fast-feedback.testlist    |  3 +-
 tests/intel-ci/xe-fast-feedback.testlist |  1 +
 tests/meson.build                        |  1 +
 4 files changed, 62 insertions(+), 1 deletion(-)
 create mode 100644 tests/core_sysfs.c

diff --git a/tests/core_sysfs.c b/tests/core_sysfs.c
new file mode 100644
index 000000000..fc97bd77b
--- /dev/null
+++ b/tests/core_sysfs.c
@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2025 Intel Corporation
+ */
+
+#include "igt.h"
+#include "igt_dir.h"
+#include "igt_sysfs.h"
+
+struct {
+	bool warn_on_not_hit;
+} opt = { 0 };
+
+/**
+ * TEST: sysfs test
+ * Description: Read entries from sysfs path.
+ * Category: Core
+ * Mega feature: General Core features
+ * Sub-category: uapi
+ * Functionality: sysfs
+ * Feature: core
+ * Test category: uapi
+ *
+ * SUBTEST: sysfs-read-all-entries
+ * Description: Read all entries from sysfs path
+ *
+ */
+
+IGT_TEST_DESCRIPTION("Read entries from sysfs paths.");
+
+igt_main
+{
+	int fd = -1;
+	int sysfs = -1;
+	igt_dir_t *igt_dir = NULL;
+
+	igt_fixture {
+		fd = drm_open_driver_master(DRIVER_ANY);
+		sysfs = igt_sysfs_open(fd);
+		igt_require(sysfs >= 0);
+
+		igt_dir = igt_dir_create(sysfs);
+		igt_require(igt_dir);
+
+		kmstest_set_vt_graphics_mode();
+	}
+
+	igt_describe("Read all entries from sysfs path.");
+	igt_subtest("sysfs-read-all-entries") {
+		igt_dir_scan_dirfd(igt_dir, -1);
+		igt_dir_process_files(igt_dir, NULL, NULL);
+	}
+
+	igt_fixture {
+		close(sysfs);
+		drm_close_driver(fd);
+	}
+}
diff --git a/tests/intel-ci/fast-feedback.testlist b/tests/intel-ci/fast-feedback.testlist
index 7902bbdae..7415c51ef 100644
--- a/tests/intel-ci/fast-feedback.testlist
+++ b/tests/intel-ci/fast-feedback.testlist
@@ -3,6 +3,8 @@ igt@i915_module_load@load
 
 # Keep alphabetically sorted by default
 igt@core_auth@basic-auth
+igt@core_debugfs@debugfs-read-all-entries
+igt@core_sysfs@sysfs-read-all-entries
 igt@fbdev@eof
 igt@fbdev@info
 igt@fbdev@nullptr
@@ -53,7 +55,6 @@ igt@i915_getparams_basic@basic-subslice-total
 igt@i915_hangman@error-state-basic
 igt@i915_pciid
 igt@intel_hwmon
-igt@core_debugfs@debugfs-read-all-entries
 igt@intel_sysfs_debugfs@i915-debugfs-read-all-entries
 igt@intel_sysfs_debugfs@i915-sysfs-read-all-entries
 igt@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 5fb233fb4..1626e5d7c 100644
--- a/tests/intel-ci/xe-fast-feedback.testlist
+++ b/tests/intel-ci/xe-fast-feedback.testlist
@@ -8,6 +8,7 @@ igt@fbdev@read
 igt@fbdev@write
 
 igt@core_debugfs@debugfs-read-all-entries
+igt@core_sysfs@sysfs-read-all-entries
 igt@intel_sysfs_debugfs@xe-base
 igt@intel_sysfs_debugfs@xe-debugfs-read-all-entries
 igt@intel_sysfs_debugfs@xe-forcewake
diff --git a/tests/meson.build b/tests/meson.build
index c05c023ef..da9247ddc 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -8,6 +8,7 @@ test_progs = [
 	'core_hotunplug',
 	'core_setmaster',
 	'core_setmaster_vs_auth',
+	'core_sysfs',
 	'dmabuf',
 	'dmabuf_sync_file',
 	'device_reset',
-- 
2.43.0