nv50: use flush_notify to reduce number of relocs

src/gallium/drivers/nv50/nv50_context.c

@@ -110,6 +110,9 @@ nv50_create(struct pipe_screen *pscreen, unsigned pctx_id)
 	nv50->pipe.is_texture_referenced = nv50_is_texture_referenced;
 	nv50->pipe.is_buffer_referenced = nv50_is_buffer_referenced;
 
+	screen->base.channel->user_private = nv50;
+	screen->base.channel->flush_notify = nv50_state_flush_notify;
+
 	nv50_init_surface_functions(nv50);
 	nv50_init_state_functions(nv50);
 	nv50_init_query_functions(nv50);

src/gallium/drivers/nv50/nv50_context.h

@@ -196,6 +196,7 @@ extern void nv50_program_destroy(struct nv50_context *nv50, struct nv50_program
 
 /* nv50_state_validate.c */
 extern boolean nv50_state_validate(struct nv50_context *nv50);
+extern void nv50_state_flush_notify(struct nouveau_channel *chan);
 
 /* nv50_tex.c */
 extern void nv50_tex_validate(struct nv50_context *);

src/gallium/drivers/nv50/nv50_state_validate.c

@@ -212,6 +212,12 @@ nv50_state_emit(struct nv50_context *nv50)
 			so_emit(chan, nv50->state.vtxattr);
 	}
 	nv50->state.dirty = 0;
+}
+
+void
+nv50_state_flush_notify(struct nouveau_channel *chan)
+{
+	struct nv50_context *nv50 = chan->user_private;
 
 	so_emit_reloc_markers(chan, nv50->state.fb);
 	so_emit_reloc_markers(chan, nv50->state.vertprog);