linux-kernel - [PATCH RFC v2 2/8] drm/i915: place selftest preparation on a separate function

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Date:   Thu,  3 Nov 2022 14:51:32 +0000
From:   Mauro Carvalho Chehab <mchehab@...nel.org>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        "Daniel Latypov" <dlatypov@...gle.com>,
        "Isabella Basso" <isabbasso@...eup.net>,
        "Jason A. Donenfeld" <Jason@...c4.com>,
        Ville Syrjälä 
        <ville.syrjala@...ux.intel.com>,
        Andi Shyti <andi.shyti@...ux.intel.com>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...il.com>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Matt Roper <matthew.d.roper@...el.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        dri-devel@...ts.freedesktop.org, igt-dev@...ts.freedesktop.org,
        intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org, skhan@...uxfoundation.org
Subject: [PATCH RFC v2 2/8] drm/i915: place selftest preparation on a separate function

The selftest preparation logic should also be used by KUnit. So,
place it on a separate function and export it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@...nel.org>
---

To avoid mailbombing on a large number of people, only mailing lists were C/C on the cover.
See [PATCH RFC v2 0/8] at: https://lore.kernel.org/all/cover.1667486144.git.mchehab@kernel.org/

 drivers/gpu/drm/i915/i915_selftest.h          |  2 ++
 .../gpu/drm/i915/selftests/i915_selftest.c    | 22 ++++++++++++-------
 2 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_selftest.h b/drivers/gpu/drm/i915/i915_selftest.h
index f54de0499be7..7fab96a42a62 100644
--- a/drivers/gpu/drm/i915/i915_selftest.h
+++ b/drivers/gpu/drm/i915/i915_selftest.h
@@ -44,6 +44,7 @@ struct i915_selftest {
 
 extern struct i915_selftest i915_selftest;
 
+void i915_prepare_selftests(const char *name);
 int i915_mock_selftests(void);
 int i915_live_selftests(struct pci_dev *pdev);
 int i915_perf_selftests(struct pci_dev *pdev);
@@ -111,6 +112,7 @@ int __i915_subtests(const char *caller,
 
 #else /* !IS_ENABLED(CONFIG_DRM_I915_SELFTEST) */
 
+static inline void i915_prepare_selftests(const char *) {};
 static inline int i915_mock_selftests(void) { return 0; }
 static inline int i915_live_selftests(struct pci_dev *pdev) { return 0; }
 static inline int i915_perf_selftests(struct pci_dev *pdev) { return 0; }
diff --git a/drivers/gpu/drm/i915/selftests/i915_selftest.c b/drivers/gpu/drm/i915/selftests/i915_selftest.c
index 571c9021bd2c..011f7b1f7ff5 100644
--- a/drivers/gpu/drm/i915/selftests/i915_selftest.c
+++ b/drivers/gpu/drm/i915/selftests/i915_selftest.c
@@ -129,13 +129,8 @@ static void set_default_test_all(struct selftest *st, unsigned int count)
 		st[i].enabled = true;
 }
 
-static int __run_selftests(const char *name,
-			   struct selftest *st,
-			   unsigned int count,
-			   void *data)
+void i915_prepare_selftests(const char *name)
 {
-	int err = 0;
-
 	while (!i915_selftest.random_seed)
 		i915_selftest.random_seed = get_random_u32();
 
@@ -144,10 +139,21 @@ static int __run_selftests(const char *name,
 		msecs_to_jiffies_timeout(i915_selftest.timeout_ms) :
 		MAX_SCHEDULE_TIMEOUT;
 
-	set_default_test_all(st, count);
-
 	pr_info(DRIVER_NAME ": Performing %s selftests with st_random_seed=0x%x st_timeout=%u\n",
 		name, i915_selftest.random_seed, i915_selftest.timeout_ms);
+}
+EXPORT_SYMBOL_NS_GPL(i915_prepare_selftests, I915_SELFTEST);
+
+static int __run_selftests(const char *name,
+			   struct selftest *st,
+			   unsigned int count,
+			   void *data)
+{
+	int err = 0;
+
+	i915_prepare_selftests(name);
+
+	set_default_test_all(st, count);
 
 	/* Tests are listed in order in i915_*_selftests.h */
 	for (; count--; st++) {
-- 
2.38.1