tests: Introduce i915 directory

We can already move all the tests with distinct prefixes: gem_, gen3_
and i915_.

pm_ and drv_ tests will follow in batches, so we can do the
adjustments in the reporting/filtering layer of the CI system.

v2: Fix test-list.txt generation with meson
v3: Fix docs build (Petri)

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Petri Latvala <petri.latvala@intel.com>
Cc: Martin Peres <martin.peres@linux.intel.com>
Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
Reviewed-by: Petri Latvala <petri.latvala@intel.com>
Tested-by: Petri Latvala <petri.latvala@intel.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 125 insertions, 0 deletions

diff --git a/tests/i915/gem_fd_exhaustion.c b/tests/i915/gem_fd_exhaustion.c
new file mode 100644
index 00000000..559590b1
--- /dev/null
+++ b/tests/i915/gem_fd_exhaustion.c
@@ -0,0 +1,125 @@
+/*
+ * 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:
+ *    Daniel Vetter <daniel.vetter@ffwll.ch>
+ *
+ */
+
+#include "igt.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/resource.h>
+#include <sys/time.h>
+#include <fcntl.h>
+#include <limits.h>
+
+unsigned int original_nr_open;
+
+static int read_sysctl(const char *path)
+{
+	unsigned int val;
+	FILE *f = fopen(path, "r");
+
+	if (f) {
+		igt_assert(fscanf(f, "%u", &val) == 1);
+		fclose(f);
+		return val;
+	}
+	return -errno;
+}
+
+static int write_sysctl(const char *path, unsigned int val)
+{
+	FILE *f = fopen(path, "w");
+
+	if (f) {
+		igt_assert(fprintf(f, "%u", val));
+		fclose(f);
+		return 0;
+	}
+	return -errno;
+}
+
+static bool allow_unlimited_files(void)
+{
+	unsigned int nofile_rlim = 1024*1024;
+	struct rlimit rlim;
+	unsigned int buf;
+
+	buf = read_sysctl("/proc/sys/fs/file-max");
+	if (buf > 0)
+		nofile_rlim = buf;
+	original_nr_open = read_sysctl("/proc/sys/fs/nr_open");
+	igt_assert(write_sysctl("/proc/sys/fs/nr_open", nofile_rlim) == 0);
+
+	if (getrlimit(RLIMIT_NOFILE, &rlim))
+		return false;
+
+	rlim.rlim_cur = nofile_rlim;
+	rlim.rlim_max = nofile_rlim;
+	return setrlimit(RLIMIT_NOFILE, &rlim) == 0;
+}
+
+static void restore_original_sysctl(int sig)
+{
+	if (original_nr_open > 0)
+		write_sysctl("/proc/sys/fs/nr_open", original_nr_open);
+}
+
+igt_simple_main
+{
+	int fd;
+
+	igt_require(allow_unlimited_files());
+
+	fd = drm_open_driver(DRIVER_INTEL);
+
+	igt_install_exit_handler(restore_original_sysctl);
+
+	igt_fork(n, 1) {
+		igt_drop_root();
+
+		for (int i = 0; ; i++) {
+			int leak = open("/dev/null", O_RDONLY);
+			uint32_t handle;
+
+			if (__gem_create(fd, 4096, &handle) == 0)
+				gem_close(fd, handle);
+
+			if (leak < 0) {
+				igt_info("fd exhaustion after %i rounds.\n", i);
+				igt_assert(__gem_create(fd, 4096,
+							&handle) < 0);
+				break;
+			}
+		}
+
+		/* The child will free all the fds when exiting, so no need to
+		 * clean up to mess to ensure that the parent can at least run
+		 * the exit handlers. */
+	}
+
+	igt_waitchildren();
+
+	close(fd);
+}