freedreno: add madvise support

With a new enough drm/msm, we can let the kernel know about buffers that
are in the bo cache, so the kernel can free them under memory pressure.

Signed-off-by: Rob Clark <robclark@freedesktop.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/freedreno/kgsl/kgsl_bo.c b/freedreno/kgsl/kgsl_bo.c
index 2b45b5e2..ab3485e3 100644
--- a/freedreno/kgsl/kgsl_bo.c
+++ b/freedreno/kgsl/kgsl_bo.c
@@ -116,6 +116,11 @@ static void kgsl_bo_cpu_fini(struct fd_bo *bo)
 {
 }
 
+static int kgsl_bo_madvise(struct fd_bo *bo, int willneed)
+{
+	return willneed; /* not supported by kgsl */
+}
+
 static void kgsl_bo_destroy(struct fd_bo *bo)
 {
 	struct kgsl_bo *kgsl_bo = to_kgsl_bo(bo);
@@ -127,6 +132,7 @@ static const struct fd_bo_funcs funcs = {
 		.offset = kgsl_bo_offset,
 		.cpu_prep = kgsl_bo_cpu_prep,
 		.cpu_fini = kgsl_bo_cpu_fini,
+		.madvise = kgsl_bo_madvise,
 		.destroy = kgsl_bo_destroy,
 };