From c8ab577cbdeb5480f000f55ed2decae7b7932197 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Fri, 15 Jul 2016 09:01:59 +0100 Subject: igt/vgem_slow/nohang: Test fence autotimeout To protect the kernel against unscrupulous fence users, fences should automatically signal after a timeout. Signed-off-by: Chris Wilson --- tests/vgem_slow.c | 90 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 tests/vgem_slow.c (limited to 'tests/vgem_slow.c') diff --git a/tests/vgem_slow.c b/tests/vgem_slow.c new file mode 100644 index 00000000..4a1ae702 --- /dev/null +++ b/tests/vgem_slow.c @@ -0,0 +1,90 @@ +/* + * Copyright © 2016 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. + */ + +#include "igt.h" +#include "igt_vgem.h" +#include "igt_debugfs.h" +#include "igt_sysfs.h" + +#include +#include +#include +#include + +IGT_TEST_DESCRIPTION("Extended sanity check of Virtual GEM module (vGEM)."); + +static bool has_prime_export(int fd) +{ + uint64_t value; + + if (drmGetCap(fd, DRM_CAP_PRIME, &value)) + return false; + + return value & DRM_PRIME_CAP_EXPORT; +} + + +static void test_nohang(int fd) +{ + struct vgem_bo bo; + uint32_t fence; + struct pollfd pfd; + + /* A vGEM fence must expire automatically to prevent driver hangs */ + + igt_require(has_prime_export(fd)); + igt_require(vgem_has_fences(fd)); + + bo.width = 1; + bo.height = 1; + bo.bpp = 32; + vgem_create(fd, &bo); + + pfd.fd = prime_handle_to_fd(fd, bo.handle); + pfd.events = POLLOUT; + + fence = vgem_fence_attach(fd, &bo, 0); + + igt_assert(poll(&pfd, 1, 0) == 0); + igt_assert(poll(&pfd, 1, 60*1000) == 1); + + vgem_fence_signal(fd, fence); + close(pfd.fd); + gem_close(fd, bo.handle); +} + +igt_main +{ + int fd = -1; + + igt_fixture { + fd = drm_open_driver(DRIVER_VGEM); + } + + igt_subtest_f("nohang") + test_nohang(fd); + + igt_fixture { + close(fd); + } +} -- cgit v1.2.3