tests/gem_evict_everything: Factor out eviction logic

In preparation for userptr test we move the eviction logic
into a common file so it can be used from both test cases.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 235 insertions, 0 deletions

diff --git a/tests/eviction_common.c b/tests/eviction_common.c
new file mode 100644
index 00000000..efe560cb
--- /dev/null
+++ b/tests/eviction_common.c
@@ -0,0 +1,235 @@
+/*
+ * Copyright © 2007, 2011, 2013, 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:
+ *    Eric Anholt <eric@anholt.net>
+ *    Daniel Vetter <daniel.vetter@ffwll.ch>
+ *    Tvrtko Ursulin <tvrtko.ursulin@intel.com>
+ *
+ */
+
+#include <stdlib.h>
+
+#include "drmtest.h"
+
+struct igt_eviction_test_ops
+{
+	uint32_t (*create)(int fd, int size);
+	void	 (*close)(int fd, uint32_t bo);
+	void	 (*copy)(int fd, uint32_t dst, uint32_t src,
+			 uint32_t *all_bo, int nr_bos, int error);
+	void	 (*clear)(int fd, uint32_t bo, int size);
+};
+
+#define FORKING_EVICTIONS_INTERRUPTIBLE	  (1 << 0)
+#define FORKING_EVICTIONS_SWAPPING	  (1 << 1)
+#define FORKING_EVICTIONS_DUP_DRMFD	  (1 << 2)
+#define FORKING_EVICTIONS_MEMORY_PRESSURE (1 << 3)
+#define ALL_FORKING_EVICTIONS	(FORKING_EVICTIONS_INTERRUPTIBLE | \
+				 FORKING_EVICTIONS_SWAPPING | \
+				 FORKING_EVICTIONS_DUP_DRMFD | \
+				 FORKING_EVICTIONS_MEMORY_PRESSURE)
+
+static void exchange_uint32_t(void *array, unsigned i, unsigned j)
+{
+	uint32_t *i_arr = array;
+	uint32_t i_tmp;
+
+	i_tmp = i_arr[i];
+	i_arr[i] = i_arr[j];
+	i_arr[j] = i_tmp;
+}
+
+static int minor_evictions(int fd, struct igt_eviction_test_ops *ops,
+				int surface_size, int nr_surfaces)
+{
+	uint32_t *bo, *sel;
+	int n, m, pass, fail;
+
+	igt_require((uint64_t)nr_surfaces * surface_size / (1024 * 1024)
+			< intel_get_total_ram_mb() * 9 / 10);
+
+	bo = malloc(3*nr_surfaces*sizeof(*bo));
+	igt_assert(bo);
+
+	for (n = 0; n < 2*nr_surfaces; n++)
+		bo[n] = ops->create(fd, surface_size);
+
+	sel = bo + n;
+	for (fail = 0, m = 0; fail < 10; fail++) {
+		for (pass = 0; pass < 100; pass++) {
+			for (n = 0; n < nr_surfaces; n++, m += 7)
+				sel[n] = bo[m%(2*nr_surfaces)];
+			ops->copy(fd, sel[0], sel[1], sel, nr_surfaces, 0);
+		}
+		ops->copy(fd, bo[0], bo[0], bo, 2*nr_surfaces, ENOSPC);
+	}
+
+	for (n = 0; n < 2*nr_surfaces; n++)
+		ops->close(fd, bo[n]);
+	free(bo);
+
+	return 0;
+}
+
+static int major_evictions(int fd, struct igt_eviction_test_ops *ops,
+				int surface_size, int nr_surfaces)
+{
+	int n, m, loop;
+	uint32_t *bo;
+
+	igt_require((uint64_t)nr_surfaces * surface_size / (1024 * 1024)
+			< intel_get_total_ram_mb() * 9 / 10);
+
+	bo = malloc(nr_surfaces*sizeof(*bo));
+	igt_assert(bo);
+
+	for (n = 0; n < nr_surfaces; n++)
+		bo[n] = ops->create(fd, surface_size);
+
+	for (loop = 0, m = 0; loop < 100; loop++, m += 17) {
+		n = m % nr_surfaces;
+		ops->copy(fd, bo[n], bo[n], &bo[n], 1, 0);
+	}
+
+	for (n = 0; n < nr_surfaces; n++)
+		ops->close(fd, bo[n]);
+	free(bo);
+
+	return 0;
+}
+
+static int swapping_evictions(int fd, struct igt_eviction_test_ops *ops,
+				int surface_size,
+				int working_surfaces,
+				int trash_surfaces)
+{
+	uint32_t *bo;
+	int i, n, pass;
+
+	igt_require((uint64_t)working_surfaces * surface_size / (1024 * 1024)
+			< intel_get_total_ram_mb() * 9 / 10);
+
+	if (trash_surfaces < working_surfaces)
+		trash_surfaces = working_surfaces;
+
+	bo = malloc(trash_surfaces*sizeof(*bo));
+	igt_assert(bo);
+
+	for (n = 0; n < trash_surfaces; n++)
+		bo[n] = ops->create(fd, surface_size);
+
+	for (i = 0; i < trash_surfaces/32; i++) {
+		igt_permute_array(bo, trash_surfaces, exchange_uint32_t);
+
+		for (pass = 0; pass < 100; pass++) {
+			ops->copy(fd, bo[0], bo[1], bo, working_surfaces, 0);
+		}
+	}
+
+	for (n = 0; n < trash_surfaces; n++)
+		ops->close(fd, bo[n]);
+	free(bo);
+
+	return 0;
+}
+
+#define min(a, b) ((a) < (b) ? (a) : (b))
+
+static int forking_evictions(int fd, struct igt_eviction_test_ops *ops,
+				int surface_size, int working_surfaces,
+				int trash_surfaces, unsigned flags)
+{
+	uint32_t *bo;
+	int n, pass, l;
+	int num_threads = sysconf(_SC_NPROCESSORS_ONLN);
+	int bo_count;
+
+	igt_require((uint64_t)working_surfaces * surface_size / (1024 * 1024)
+			< intel_get_total_ram_mb() * 9 / 10);
+
+	if (flags & FORKING_EVICTIONS_SWAPPING) {
+		igt_require(intel_get_total_ram_mb() / 4
+				< intel_get_total_swap_mb());
+		bo_count = trash_surfaces;
+
+		if (bo_count < working_surfaces)
+			bo_count = working_surfaces;
+	} else
+		bo_count = working_surfaces;
+
+	bo = malloc(bo_count*sizeof(*bo));
+	igt_assert(bo);
+
+	for (n = 0; n < bo_count; n++)
+		bo[n] = ops->create(fd, surface_size);
+
+	igt_fork(i, min(num_threads * 4, 12)) {
+		int realfd = fd;
+		int num_passes = flags & FORKING_EVICTIONS_SWAPPING ? 10 : 100;
+
+		/* Every fork should have a different permutation! */
+		srand(i * 63);
+
+		if (flags & FORKING_EVICTIONS_INTERRUPTIBLE)
+			igt_fork_signal_helper();
+
+		igt_permute_array(bo, bo_count, exchange_uint32_t);
+
+		if (flags & FORKING_EVICTIONS_DUP_DRMFD) {
+			realfd = drm_open_any();
+
+			/* We can overwrite the bo array since we're forked. */
+			for (l = 0; l < bo_count; l++) {
+				uint32_t flink;
+
+				flink = gem_flink(fd, bo[l]);
+				bo[l] = gem_open(realfd, flink);
+			}
+		}
+
+		for (pass = 0; pass < num_passes; pass++) {
+			ops->copy(realfd, bo[0], bo[1], bo, working_surfaces, 0);
+
+			for (l = 0; l < working_surfaces &&
+			  (flags & FORKING_EVICTIONS_MEMORY_PRESSURE);
+			    l++) {
+				ops->clear(realfd, bo[l], surface_size);
+			}
+		}
+
+		if (flags & FORKING_EVICTIONS_INTERRUPTIBLE)
+			igt_stop_signal_helper();
+
+		/* drmfd closing will take care of additional bo refs */
+		if (flags & FORKING_EVICTIONS_DUP_DRMFD)
+			close(realfd);
+	}
+
+	igt_waitchildren();
+
+	for (n = 0; n < bo_count; n++)
+		ops->close(fd, bo[n]);
+	free(bo);
+
+	return 0;
+}