From 697c3f5550d8a58901c010635ecb7a76a524d296 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Fri, 4 Mar 2016 10:19:38 +0000
Subject: lib: Magic for_each_engine() macro to iterate over available engines

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 lib/igt_gt.h | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'lib/igt_gt.h')

diff --git a/lib/igt_gt.h b/lib/igt_gt.h
index ad993c1b..dfe1cfb3 100644
--- a/lib/igt_gt.h
+++ b/lib/igt_gt.h
@@ -100,4 +100,13 @@ extern const struct intel_execution_engine {
 	unsigned flags;
 } intel_execution_engines[];
 
+#define for_if(expr__) if (!(expr__)) {} else
+
+#define for_each_engine(fd__, flags__) \
+	for (const struct intel_execution_engine *e__ = intel_execution_engines;\
+	     e__->name; \
+	     e__++) \
+		for_if (gem_has_ring(fd, flags__ = e__->exec_id | e__->flags))
+
+
 #endif /* IGT_GT_H */
-- 
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