[PATCH i-g-t v2 1/3] igt: Add a helper function to mark BOs purgeable

Boris Brezillon
2017-10-04T10:22:24Z

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
---
Changes in v2:
- none
---
lib/igt_vc4.c | 12 ++++++++++++
lib/igt_vc4.h | 1 +
2 files changed, 13 insertions(+)

diff --git a/lib/igt_vc4.c b/lib/igt_vc4.c
index c4682f5688f1..b75c063204ec 100644
--- a/lib/igt_vc4.c
+++ b/lib/igt_vc4.c
@@ -128,3 +128,15 @@ igt_vc4_mmap_bo(int fd, uint32_t handle, uint32_t size, unsigned prot)
else
return ptr;
}
+
+bool igt_vc4_purgeable_bo(int fd, int handle, bool purgeable)
+{
+ struct drm_vc4_gem_madvise arg = {
+ .handle = handle,
+ .madv = purgeable ? VC4_MADV_DONTNEED : VC4_MADV_WILLNEED,
+ };
+
+ do_ioctl(fd, DRM_IOCTL_VC4_GEM_MADVISE, &arg);
+
+ return arg.retained;
+}
diff --git a/lib/igt_vc4.h b/lib/igt_vc4.h
index e9252461c951..9f0fc59910f6 100644
--- a/lib/igt_vc4.h
+++ b/lib/igt_vc4.h
@@ -27,5 +27,6 @@
uint32_t igt_vc4_get_cleared_bo(int fd, size_t size, uint32_t clearval);
int igt_vc4_create_bo(int fd, size_t size);
void *igt_vc4_mmap_bo(int fd, uint32_t handle, uint32_t size, unsigned prot);
+bool igt_vc4_purgeable_bo(int fd, int handle, bool purgeable);

#endif /* IGT_VC4_H */
--
2.11.0