diff options
| -rw-r--r-- | tests/Makefile.sources | 1 | ||||
| -rw-r--r-- | tests/meson.build | 1 | ||||
| -rw-r--r-- | tests/vc4_purgeable_bo.c | 266 |
3 files changed, 268 insertions, 0 deletions
diff --git a/tests/Makefile.sources b/tests/Makefile.sources index e03d8235..ca4b3cf3 100644 --- a/tests/Makefile.sources +++ b/tests/Makefile.sources @@ -9,6 +9,7 @@ VC4_TESTS = \ vc4_dmabuf_poll \ vc4_lookup_fail \ vc4_label_bo \ + vc4_purgeable_bo \ vc4_tiling \ vc4_wait_bo \ vc4_wait_seqno \ diff --git a/tests/meson.build b/tests/meson.build index 5af4e515..2fc84515 100644 --- a/tests/meson.build +++ b/tests/meson.build @@ -217,6 +217,7 @@ test_progs = [ 'vc4_dmabuf_poll', 'vc4_label_bo', 'vc4_lookup_fail', + 'vc4_purgeable_bo', 'vc4_tiling', 'vc4_wait_bo', 'vc4_wait_seqno', diff --git a/tests/vc4_purgeable_bo.c b/tests/vc4_purgeable_bo.c new file mode 100644 index 00000000..b60b773c --- /dev/null +++ b/tests/vc4_purgeable_bo.c @@ -0,0 +1,266 @@ +/* + * Copyright © 2017 Broadcom + * + * 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_vc4.h" +#include <unistd.h> +#include <signal.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <fcntl.h> +#include <inttypes.h> +#include <errno.h> +#include <sys/stat.h> +#include <sys/ioctl.h> +#include "vc4_drm.h" + +struct igt_vc4_bo { + struct igt_list node; + int handle; + void *map; + size_t size; +}; + +static jmp_buf jmp; + +static void __attribute__((noreturn)) sigtrap(int sig) +{ + longjmp(jmp, sig); +} + +static void igt_vc4_alloc_mmap_max_bo(int fd, struct igt_list *list, + size_t size) +{ + struct igt_vc4_bo *bo; + struct drm_vc4_create_bo create = { + .size = size, + }; + + while (true) { + if (igt_ioctl(fd, DRM_IOCTL_VC4_CREATE_BO, &create)) + break; + + bo = malloc(sizeof(*bo)); + igt_assert(bo); + bo->handle = create.handle; + bo->size = create.size; + bo->map = igt_vc4_mmap_bo(fd, bo->handle, bo->size, + PROT_READ | PROT_WRITE); + igt_list_add_tail(&bo->node, list); + } +} + +static void igt_vc4_unmap_free_bo_pool(int fd, struct igt_list *list) +{ + struct igt_vc4_bo *bo; + + while (!igt_list_empty(list)) { + bo = igt_list_first_entry(list, bo, node); + igt_assert(bo); + igt_list_del(&bo->node); + munmap(bo->map, bo->size); + gem_close(fd, bo->handle); + free(bo); + } +} + +static void igt_vc4_trigger_purge(int fd) +{ + struct igt_list list; + + igt_list_init(&list); + + /* Try to allocate as much as we can to trigger a purge. */ + igt_vc4_alloc_mmap_max_bo(fd, &list, 64 * 1024); + igt_assert(!igt_list_empty(&list)); + igt_vc4_unmap_free_bo_pool(fd, &list); +} + +static void igt_vc4_purgeable_subtest_prepare(int fd, struct igt_list *list) +{ + igt_vc4_unmap_free_bo_pool(fd, list); + igt_vc4_alloc_mmap_max_bo(fd, list, 64 * 1024); + igt_assert(!igt_list_empty(list)); +} + +igt_main +{ + struct igt_vc4_bo *bo; + struct igt_list list; + uint32_t *map; + int fd, ret; + + igt_fixture { + uint64_t val = 0; + + fd = drm_open_driver(DRIVER_VC4); + igt_vc4_get_param(fd, DRM_VC4_PARAM_SUPPORTS_MADVISE, &val); + igt_require(val); + igt_list_init(&list); + } + + igt_subtest("mark-willneed") { + igt_vc4_purgeable_subtest_prepare(fd, &list); + igt_list_for_each(bo, &list, node) + igt_assert(igt_vc4_purgeable_bo(fd, bo->handle, + false)); + } + + igt_subtest("mark-purgeable") { + igt_vc4_purgeable_subtest_prepare(fd, &list); + igt_list_for_each(bo, &list, node) + igt_vc4_purgeable_bo(fd, bo->handle, true); + + igt_list_for_each(bo, &list, node) + igt_vc4_purgeable_bo(fd, bo->handle, false); + } + + igt_subtest("mark-purgeable-twice") { + igt_vc4_purgeable_subtest_prepare(fd, &list); + bo = igt_list_first_entry(&list, bo, node); + igt_vc4_purgeable_bo(fd, bo->handle, true); + igt_vc4_purgeable_bo(fd, bo->handle, true); + igt_vc4_purgeable_bo(fd, bo->handle, false); + } + + igt_subtest("mark-unpurgeable-twice") { + igt_vc4_purgeable_subtest_prepare(fd, &list); + bo = igt_list_first_entry(&list, bo, node); + igt_vc4_purgeable_bo(fd, bo->handle, true); + igt_vc4_purgeable_bo(fd, bo->handle, false); + igt_vc4_purgeable_bo(fd, bo->handle, false); + } + + igt_subtest("access-purgeable-bo-mem") { + igt_vc4_purgeable_subtest_prepare(fd, &list); + bo = igt_list_first_entry(&list, bo, node); + map = (uint32_t *)bo->map; + + /* Mark the BO as purgeable, but do not try to allocate a new + * BO. This should leave the BO in a non-purged state unless + * someone else tries to allocated a new BO. + */ + igt_vc4_purgeable_bo(fd, bo->handle, true); + + /* Accessing a purgeable BO may generate a SIGBUS event if the + * BO has been purged by the system in the meantime. + */ + signal(SIGSEGV, sigtrap); + signal(SIGBUS, sigtrap); + ret = setjmp(jmp); + if (!ret) + *map = 0xdeadbeef; + else + igt_assert(ret == SIGBUS); + signal(SIGBUS, SIG_DFL); + signal(SIGSEGV, SIG_DFL); + } + + igt_subtest("access-purged-bo-mem") { + igt_vc4_purgeable_subtest_prepare(fd, &list); + + /* Mark the first BO in our list as purgeable and try to + * allocate a new one. This should trigger a purge and render + * the first BO inaccessible. + */ + bo = igt_list_first_entry(&list, bo, node); + map = (uint32_t *)bo->map; + igt_vc4_purgeable_bo(fd, bo->handle, true); + + /* Trigger a purge. */ + igt_vc4_trigger_purge(fd); + + /* Accessing a purged BO should generate a SIGBUS event. */ + signal(SIGSEGV, sigtrap); + signal(SIGBUS, sigtrap); + ret = setjmp(jmp); + if (!ret) + *map = 0; + else + igt_assert(ret == SIGBUS); + signal(SIGBUS, SIG_DFL); + signal(SIGSEGV, SIG_DFL); + igt_vc4_purgeable_bo(fd, bo->handle, false); + } + + igt_subtest("mark-unpurgeable-check-retained") { + igt_vc4_purgeable_subtest_prepare(fd, &list); + igt_list_for_each(bo, &list, node) { + map = (uint32_t *)bo->map; + *map = 0xdeadbeef; + igt_vc4_purgeable_bo(fd, bo->handle, true); + } + + igt_list_for_each(bo, &list, node) { + map = (uint32_t *)bo->map; + if (igt_vc4_purgeable_bo(fd, bo->handle, false)) + igt_assert(*map == 0xdeadbeef); + } + } + + igt_subtest("mark-unpurgeable-purged") { + igt_vc4_purgeable_subtest_prepare(fd, &list); + + igt_list_for_each(bo, &list, node) + igt_vc4_purgeable_bo(fd, bo->handle, true); + + /* Trigger a purge. */ + igt_vc4_trigger_purge(fd); + + bo = igt_list_first_entry(&list, bo, node); + map = (uint32_t *)bo->map; + + igt_assert(!igt_vc4_purgeable_bo(fd, bo->handle, false)); + + /* Purged BOs are unusable and any access to their + * mmap-ed region should trigger a SIGBUS. + */ + signal(SIGSEGV, sigtrap); + signal(SIGBUS, sigtrap); + ret = setjmp(jmp); + if (!ret) + *map = 0; + else + igt_assert(ret == SIGBUS); + signal(SIGBUS, SIG_DFL); + signal(SIGSEGV, SIG_DFL); + } + + igt_subtest("free-purged-bo") { + igt_vc4_purgeable_subtest_prepare(fd, &list); + bo = igt_list_first_entry(&list, bo, node); + igt_vc4_purgeable_bo(fd, bo->handle, true); + + /* Trigger a purge. */ + igt_vc4_trigger_purge(fd); + + igt_list_del(&bo->node); + munmap(bo->map, bo->size); + gem_close(fd, bo->handle); + free(bo); + } + + igt_fixture + close(fd); +} |