lib/intel_batchbuffer: add tracking and reset for allocator

After subtest ends, due to normal flow or after fail by
igt_assert, igt_core inits intel_allocator before next subtest,
and this makes allocator handle keeped in intel_batchbuffer
invalid. Moreover any call to intel_allocator can result in
fail as there are no allocators until first allocator_open.

Add tracking intel_butchbuffer if it is using allocator and
recreate its allocator handle and offsets from igt_core before
next subtest.

Add flag for turn on tracking and a helper function for it with
default value off. It will not change behaviour of already used
tests. Use case is for standalone runs with many subtests like
gem_concurrent_blit.

v2: add tracking flag with default off (Zbigniew)
v3: add and correct functions descriptions (Zbigniew)

Signed-off-by: Kamil Konieczny <kamil.konieczny@linux.intel.com>
Cc: Zbigniew Kempczyński <zbigniew.kempczynski@intel.com>
Reviewed-by: Zbigniew Kempczyński <zbigniew.kempczynski@intel.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/lib/intel_batchbuffer.h b/lib/intel_batchbuffer.h
index e7606307..a488f9cf 100644
--- a/lib/intel_batchbuffer.h
+++ b/lib/intel_batchbuffer.h
@@ -456,7 +456,10 @@ struct igt_pxp {
  * Batchbuffer without libdrm dependency
  */
 struct intel_bb {
+	struct igt_list_head link;
+
 	uint64_t allocator_handle;
+	uint64_t allocator_start, allocator_end;
 	uint8_t allocator_type;
 	enum allocator_strategy allocator_strategy;
 
@@ -524,6 +527,10 @@ struct intel_bb *
 intel_bb_create_with_relocs_and_context(int i915, uint32_t ctx, uint32_t size);
 void intel_bb_destroy(struct intel_bb *ibb);
 
+/* make it safe to use intel_allocator after failed test */
+void intel_bb_reinit_allocator(void);
+void intel_bb_track(bool do_tracking);
+
 static inline void intel_bb_ref(struct intel_bb *ibb)
 {
 	ibb->refcount++;