[i-g-t,1/2] lib/panfrost: Add a utility to madvise a buffer

Commit Message

Neil Roberts March 5, 2021, 11:12 a.m. UTC

Signed-off-by: Neil Roberts <[e-mail]>
---
 lib/igt_panfrost.c | 12 ++++++++++++
 lib/igt_panfrost.h |  1 +
 2 files changed, 13 insertions(+)

Patch

diff --git a/lib/igt_panfrost.c b/lib/igt_panfrost.c
index 8b0c2b77..ffce66a2 100644
--- a/lib/igt_panfrost.c
+++ b/lib/igt_panfrost.c
@@ -127,6 +127,18 @@  void igt_panfrost_bo_mmap(int fd, struct panfrost_bo *bo)
         igt_assert(bo->map);
 }
 
+bool igt_panfrost_bo_madvise(int fd, struct panfrost_bo *bo, uint32_t madv)
+{
+        struct drm_panfrost_madvise madvise = {
+                .handle = bo->handle,
+                .madv = madv,
+        };
+
+        do_ioctl(fd, DRM_IOCTL_PANFROST_MADVISE, &madvise);
+
+        return madvise.retained;
+}
+
 struct panfrost_submit *igt_panfrost_trivial_job(int fd, bool do_crash, int width, int height, uint32_t color)
 {
         struct panfrost_submit *submit;
diff --git a/lib/igt_panfrost.h b/lib/igt_panfrost.h
index cc7998dc..df326a6c 100644
--- a/lib/igt_panfrost.h
+++ b/lib/igt_panfrost.h
@@ -56,5 +56,6 @@  uint32_t igt_panfrost_get_param(int fd, int param);
 void *igt_panfrost_mmap_bo(int fd, uint32_t handle, uint32_t size, unsigned prot);
 
 void igt_panfrost_bo_mmap(int fd, struct panfrost_bo *bo);
+bool igt_panfrost_bo_madvise(int fd, struct panfrost_bo *bo, uint32_t madv);
 
 #endif /* IGT_PANFROST_H */