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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/gpu/drm/i915/selftests/i915_selftest.c
..
..
@@ -23,11 +23,14 @@
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23
 
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 #include <linux/random.h>
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25
 
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-#include "../i915_drv.h"
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-#include "../i915_selftest.h"
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+#include "gt/intel_gt_pm.h"
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+#include "i915_drv.h"
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+#include "i915_selftest.h"
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+
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+#include "igt_flush_test.h"
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 struct i915_selftest i915_selftest __read_mostly = {
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-	.timeout_ms = 1000,
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+	.timeout_ms = 500,
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 };
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 int i915_mock_sanitycheck(void)
..
..
@@ -54,6 +57,12 @@
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 #undef selftest
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 };
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59
 
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+enum {
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+#define selftest(name, func) perf_##name,
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+#include "i915_perf_selftests.h"
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+#undef selftest
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+};
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+
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 struct selftest {
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 	bool enabled;
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 	const char *name;
..
..
@@ -75,6 +84,12 @@
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 };
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 #undef selftest
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+#define selftest(n, f) [perf_##n] = { .name = #n, { .live = f } },
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+static struct selftest perf_selftests[] = {
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+#include "i915_perf_selftests.h"
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+};
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+#undef selftest
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+
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 /* Embed the line number into the parameter name so that we can order tests */
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 #define selftest(n, func) selftest_0(n, func, param(n))
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 #define param(n) __PASTE(igt__, __PASTE(__LINE__, __mock_##n))
..
..
@@ -88,6 +103,13 @@
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 #define selftest_0(n, func, id) \
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 module_param_named(id, live_selftests[live_##n].enabled, bool, 0400);
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 #include "i915_live_selftests.h"
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+#undef selftest_0
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+#undef param
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+
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+#define param(n) __PASTE(igt__, __PASTE(__LINE__, __perf_##n))
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+#define selftest_0(n, func, id) \
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+module_param_named(id, perf_selftests[perf_##n].enabled, bool, 0400);
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+#include "i915_perf_selftests.h"
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 #undef selftest_0
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 #undef param
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 #undef selftest
..
..
@@ -133,7 +155,7 @@
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 		if (signal_pending(current))
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 			return -EINTR;
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-		pr_debug(DRIVER_NAME ": Running %s\n", st->name);
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+		pr_info(DRIVER_NAME ": Running %s\n", st->name);
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 		if (data)
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 			err = st->live(data);
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 		else
..
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@@ -183,7 +205,7 @@
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 	if (!i915_selftest.live)
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 		return 0;
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-	err = run_selftests(live, to_i915(pci_get_drvdata(pdev)));
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+	err = run_selftests(live, pdev_to_i915(pdev));
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 	if (err) {
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 		i915_selftest.live = err;
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 		return err;
..
..
@@ -197,7 +219,129 @@
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 	return 0;
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 }
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221
 
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+int i915_perf_selftests(struct pci_dev *pdev)
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+{
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+	int err;
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+
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+	if (!i915_selftest.perf)
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+		return 0;
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+
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+	err = run_selftests(perf, pdev_to_i915(pdev));
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+	if (err) {
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+		i915_selftest.perf = err;
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+		return err;
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+	}
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+
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+	if (i915_selftest.perf < 0) {
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+		i915_selftest.perf = -ENOTTY;
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+		return 1;
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+	}
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+
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+	return 0;
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+}
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+
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+static bool apply_subtest_filter(const char *caller, const char *name)
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+{
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+	char *filter, *sep, *tok;
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+	bool result = true;
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+
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+	filter = kstrdup(i915_selftest.filter, GFP_KERNEL);
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+	for (sep = filter; (tok = strsep(&sep, ","));) {
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+		bool allow = true;
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+		char *sl;
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+
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+		if (*tok == '!') {
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+			allow = false;
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+			tok++;
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+		}
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+
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+		if (*tok == '\0')
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+			continue;
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+
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+		sl = strchr(tok, '/');
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+		if (sl) {
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+			*sl++ = '\0';
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+			if (strcmp(tok, caller)) {
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+				if (allow)
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+					result = false;
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+				continue;
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+			}
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+			tok = sl;
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+		}
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+
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+		if (strcmp(tok, name)) {
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+			if (allow)
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+				result = false;
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+			continue;
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+		}
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+
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+		result = allow;
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+		break;
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+	}
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+	kfree(filter);
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+
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+	return result;
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+}
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+
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+int __i915_nop_setup(void *data)
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+{
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+	return 0;
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+}
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+
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+int __i915_nop_teardown(int err, void *data)
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+{
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+	return err;
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+}
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+
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+int __i915_live_setup(void *data)
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+{
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+	struct drm_i915_private *i915 = data;
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+
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+	/* The selftests expect an idle system */
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+	if (intel_gt_pm_wait_for_idle(&i915->gt))
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+		return -EIO;
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+
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+	return intel_gt_terminally_wedged(&i915->gt);
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+}
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+
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+int __i915_live_teardown(int err, void *data)
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+{
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+	struct drm_i915_private *i915 = data;
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+
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+	if (igt_flush_test(i915))
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+		err = -EIO;
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+
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+	i915_gem_drain_freed_objects(i915);
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+
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+	return err;
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+}
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+
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+int __intel_gt_live_setup(void *data)
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+{
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+	struct intel_gt *gt = data;
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+
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+	/* The selftests expect an idle system */
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+	if (intel_gt_pm_wait_for_idle(gt))
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+		return -EIO;
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+
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+	return intel_gt_terminally_wedged(gt);
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+}
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+
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+int __intel_gt_live_teardown(int err, void *data)
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+{
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+	struct intel_gt *gt = data;
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+
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+	if (igt_flush_test(gt->i915))
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+		err = -EIO;
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+
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+	i915_gem_drain_freed_objects(gt->i915);
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+
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+	return err;
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+}
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+
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 int __i915_subtests(const char *caller,
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+		    int (*setup)(void *data),
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+		    int (*teardown)(int err, void *data),
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 		    const struct i915_subtest *st,
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 		    unsigned int count,
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 		    void *data)
..
..
@@ -209,10 +353,20 @@
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 		if (signal_pending(current))
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 			return -EINTR;
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355
 
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-		pr_debug(DRIVER_NAME ": Running %s/%s\n", caller, st->name);
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+		if (!apply_subtest_filter(caller, st->name))
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+			continue;
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+
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+		err = setup(data);
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+		if (err) {
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+			pr_err(DRIVER_NAME "/%s: setup failed for %s\n",
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+			       caller, st->name);
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+			return err;
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+		}
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+
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+		pr_info(DRIVER_NAME ": Running %s/%s\n", caller, st->name);
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 		GEM_TRACE("Running %s/%s\n", caller, st->name);
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368
 
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-		err = st->func(data);
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+		err = teardown(st->func(data), data);
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 		if (err && err != -EINTR) {
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 			pr_err(DRIVER_NAME "/%s: %s failed with error %d\n",
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 			       caller, st->name, err);
..
..
@@ -242,11 +396,44 @@
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 	return true;
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 }
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398
 
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+void igt_hexdump(const void *buf, size_t len)
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+{
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+	const size_t rowsize = 8 * sizeof(u32);
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+	const void *prev = NULL;
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+	bool skip = false;
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+	size_t pos;
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+
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+	for (pos = 0; pos < len; pos += rowsize) {
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+		char line[128];
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+
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+		if (prev && !memcmp(prev, buf + pos, rowsize)) {
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+			if (!skip) {
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+				pr_info("*\n");
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+				skip = true;
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+			}
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+			continue;
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+		}
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+
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+		WARN_ON_ONCE(hex_dump_to_buffer(buf + pos, len - pos,
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+						rowsize, sizeof(u32),
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+						line, sizeof(line),
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+						false) >= sizeof(line));
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+		pr_info("[%04zx] %s\n", pos, line);
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+
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+		prev = buf + pos;
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+		skip = false;
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+	}
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+}
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+
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 module_param_named(st_random_seed, i915_selftest.random_seed, uint, 0400);
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 module_param_named(st_timeout, i915_selftest.timeout_ms, uint, 0400);
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+module_param_named(st_filter, i915_selftest.filter, charp, 0400);
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 module_param_named_unsafe(mock_selftests, i915_selftest.mock, int, 0400);
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 MODULE_PARM_DESC(mock_selftests, "Run selftests before loading, using mock hardware (0:disabled [default], 1:run tests then load driver, -1:run tests then exit module)");
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 module_param_named_unsafe(live_selftests, i915_selftest.live, int, 0400);
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 MODULE_PARM_DESC(live_selftests, "Run selftests after driver initialisation on the live system (0:disabled [default], 1:run tests then continue, -1:run tests then exit module)");
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+
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+module_param_named_unsafe(perf_selftests, i915_selftest.perf, int, 0400);
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+MODULE_PARM_DESC(perf_selftests, "Run performance orientated selftests after driver initialisation on the live system (0:disabled [default], 1:run tests then continue, -1:run tests then exit module)");