[PATCH 5/7] lib/igt_core: Enable automatic platform filtering in subtest execution

[<vitaly.prosyak@amd.com>]

From: Vitaly Prosyak <vitaly.prosyak@amd.com>

Integrate platform filtering into the IGT framework by adding automatic
checks in __igt_run_subtest() before each subtest executes.

How automatic filtering works:
- If platform filtering initialized (via vendor platform_filter_init),
  automatically check each subtest before execution
- If subtest matches skip rule, print SKIP with reason and source
- If not initialized, behave as before (backward compatible)

This eliminates the need for manual igt_platform_require() calls in
every subtest. Tests only need to call platform_filter_init() once
in igt_fixture() to enable automatic filtering for all subtests.

Skip messages show the filtering source for debugging:
  Platform filtering (config): SWDEV-12345 - Known issue

Cc: Kamil Konieczny <kamil.konieczny@linux.intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Jesse Zhang <jesse.zhang@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Krzysztof Karas <krzysztof.karas@intel.com>
Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
---
 lib/igt_core.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/lib/igt_core.c b/lib/igt_core.c
index a7c097d9e..d2a6d79f5 100644
--- a/lib/igt_core.c
+++ b/lib/igt_core.c
@@ -80,6 +80,7 @@
 #include "igt_rc.h"
 #include "igt_list.h"
 #include "igt_map.h"
+#include "igt_platform_filter.h"
 #include "igt_device_scan.h"
 #include "igt_thread.h"
 #include "igt_vec.h"
@@ -1580,6 +1581,23 @@ bool __igt_run_subtest(const char *subtest_name, const char *file, const int lin
 		return false;
 	}
 
+
+	/* Automatic platform filtering - if initialized, check if subtest should be skipped */
+	if (igt_platform_filter_is_initialized()) {
+		enum skip_source source;
+		const char *reason;
+
+		if (igt_platform_should_skip(igt_test_name(), subtest_name,
+					      &source, &reason)) {
+			_subtest_result_message(_SUBTEST_TYPE_NORMAL, subtest_name,
+						"SKIP", 0.0);
+			igt_info("Platform filtering (%s): %s\n",
+				 source == SKIP_SOURCE_BUILTIN ? "built-in" :
+				 source == SKIP_SOURCE_CONFIG ? "config" : "env",
+				 reason);
+			return false;
+		}
+	}
 	igt_kmsg(KMSG_INFO "%s: starting subtest %s\n",
 		 command_str, subtest_name);
 	igt_trace("%s: starting subtest %s\n", command_str, subtest_name);
-- 
2.54.0