Exercise that calling madvise produces expected results
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
tests/.gitignore | 1 +
tests/Makefile.sources | 1 +
tests/gem_madvise.c | 155 +++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 157 insertions(+)
create mode 100644 tests/gem_madvise.c
diff --git a/tests/.gitignore b/tests/.gitignore
index 7377275..30d738f 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -48,6 +48,7 @@ gem_hangcheck_forcewake
gem_largeobject
gem_linear_blits
gem_lut_handle
+gem_madvise
gem_media_fill
gem_mmap
gem_mmap_gtt
diff --git a/tests/Makefile.sources b/tests/Makefile.sources
index 459c7c9..124b235 100644
--- a/tests/Makefile.sources
+++ b/tests/Makefile.sources
@@ -34,6 +34,7 @@ TESTS_progs_M = \
gem_flink \
gem_flink_race \
gem_linear_blits \
+ gem_madvise \
gem_mmap \
gem_mmap_gtt \
gem_partial_pwrite_pread \
diff --git a/tests/gem_madvise.c b/tests/gem_madvise.c
new file mode 100644
index 0000000..a7bd22c
--- /dev/null
+++ b/tests/gem_madvise.c
@@ -0,0 +1,155 @@
+/*
+ * Copyright © 2014 Intel Corporation
+ *
+ * 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:
+ * Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
+ *
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <errno.h>
+#include <setjmp.h>
+#include <signal.h>
+
+#include "drm.h"
+#include "i915_drm.h"
+#include "drmtest.h"
+
+#define OBJECT_SIZE (1024*1024)
+
+/* Testcase: checks that the kernel reports EFAULT when trying to use purged bo
+ *
+ */
+
+static jmp_buf jmp;
+
+static void sigtrap(int sig)
+{
+ longjmp(jmp, sig);
+}
+
+static void
+dontneed_before_mmap(void)
+{
+ int fd = drm_open_any();
+ uint32_t handle;
+ char *ptr;
+
+ handle = gem_create(fd, OBJECT_SIZE);
+ gem_madvise(fd, handle, I915_MADV_DONTNEED);
+ ptr = gem_mmap(fd, handle, OBJECT_SIZE, PROT_READ | PROT_WRITE);
+ igt_assert(ptr == NULL);
+ igt_assert(errno == EFAULT);
+ close(fd);
+}
+
+static void
+dontneed_after_mmap(void)
+{
+ int fd = drm_open_any();
+ uint32_t handle;
+ char *ptr;
+
+ handle = gem_create(fd, OBJECT_SIZE);
+ ptr = gem_mmap(fd, handle, OBJECT_SIZE, PROT_READ | PROT_WRITE);
+ igt_assert(ptr != NULL);
+ gem_madvise(fd, handle, I915_MADV_DONTNEED);
+ close(fd);
+
+ signal(SIGBUS, sigtrap);
+ switch (setjmp(jmp)) {
+ case SIGBUS:
+ break;
+ case 0:
+ *ptr = 0;
+ default:
+ igt_assert(!"reached");
+ break;
+ }
+ munmap(ptr, OBJECT_SIZE);
+ signal(SIGBUS, SIG_DFL);
+}
+
+static void
+dontneed_before_pwrite(void)
+{
+ int fd = drm_open_any();
+ uint32_t buf[] = { MI_BATCH_BUFFER_END, 0 };
+ struct drm_i915_gem_pwrite gem_pwrite;
+
+ gem_pwrite.handle = gem_create(fd, OBJECT_SIZE);
+ gem_pwrite.offset = 0;
+ gem_pwrite.size = sizeof(buf);
+ gem_pwrite.data_ptr = (uintptr_t)buf;
+ gem_madvise(fd, gem_pwrite.handle, I915_MADV_DONTNEED);
+
+ igt_assert(drmIoctl(fd, DRM_IOCTL_I915_GEM_PWRITE, &gem_pwrite));
+ igt_assert(errno == EFAULT);
+
+ gem_close(fd, gem_pwrite.handle);
+ close(fd);
+}
+
+static void
+dontneed_before_exec(void)
+{
+ int fd = drm_open_any();
+ struct drm_i915_gem_execbuffer2 execbuf;
+ struct drm_i915_gem_exec_object2 exec;
+ uint32_t buf[] = { MI_BATCH_BUFFER_END, 0 };
+
+ memset(&execbuf, 0, sizeof(execbuf));
+ memset(&exec, 0, sizeof(exec));
+
+ exec.handle = gem_create(fd, OBJECT_SIZE);
+ gem_write(fd, exec.handle, 0, buf, sizeof(buf));
+ gem_madvise(fd, exec.handle, I915_MADV_DONTNEED);
+
+ execbuf.buffers_ptr = (uintptr_t)&exec;
+ execbuf.buffer_count = 1;
+ gem_execbuf(fd, &execbuf);
+
+ gem_close(fd, exec.handle);
+ close(fd);
+}
+
+igt_simple_main
+{
+ igt_skip_on_simulation();
+
+ igt_subtest("dontneed-before-mmap")
+ dontneed_before_mmap();
+
+ igt_subtest("dontneed-after-mmap")
+ dontneed_after_mmap();
+
+ igt_subtest("dontneed-before-pwrite")
+ dontneed_before_pwrite();
+
+ igt_subtest("dontneed-before-exec")
+ dontneed_before_exec();
+}
--
1.9.rc1
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