1 files changed, 77 insertions, 0 deletions
diff --git a/tests/radeon/radeon_ttm.c b/tests/radeon/radeon_ttm.c
new file mode 100644
index 0000000..8346e85
--- /dev/null
+++ b/tests/radeon/radeon_ttm.c
@@ -0,0 +1,77 @@
+/*
+ * Copyright © 2011 Red Hat
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Jerome Glisse <j.glisse@gmail.com>
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include "rbo.h"
+#include "xf86drm.h"
+
+/* allocate as many single page bo to try to starve the kernel
+ * memory zone (below highmem)
+ */
+static void ttm_starve_kernel_private_memory(int fd)
+{
+    struct list_head list;
+    struct rbo *bo, *tmp;
+    unsigned nbo = 0;
+
+    printf("\n[%s]\n", __func__);
+    list_inithead(&list);
+    while (1) {
+        bo = rbo(fd, 0, 4096, 0, NULL);
+        if (bo == NULL) {
+            printf("failing after %d bo\n", nbo);
+            break;
+        }
+        nbo++;
+        list_add(&bo->list, &list);
+    }
+    LIST_FOR_EACH_ENTRY_SAFE(bo, tmp, &list, list) {
+        list_del(&bo->list);
+        rbo_decref(bo);
+    }
+}
+
+static int radeon_open_fd(void)
+{
+    return drmOpen("radeon", NULL);
+}
+
+int main(void)
+{
+    int radeonfd;
+
+    radeonfd = radeon_open_fd();
+    if (radeonfd < 0) {
+        fprintf(stderr, "failed to open radeon fd\n");
+        return -1;
+    }
+
+    ttm_starve_kernel_private_memory(radeonfd);
+
+    close(radeonfd);
+    return 0;
+}