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265 lines
6.9 KiB
265 lines
6.9 KiB
/*
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* Copyright © 2017 Broadcom
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "igt.h"
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#include "igt_vc4.h"
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#include <unistd.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include "vc4_drm.h"
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struct igt_vc4_bo {
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struct igt_list node;
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int handle;
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void *map;
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size_t size;
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};
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static jmp_buf jmp;
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static void __attribute__((noreturn)) sigtrap(int sig)
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{
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longjmp(jmp, sig);
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}
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static void igt_vc4_alloc_mmap_max_bo(int fd, struct igt_list *list,
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size_t size)
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{
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struct igt_vc4_bo *bo;
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struct drm_vc4_create_bo create = {
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.size = size,
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};
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while (true) {
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if (igt_ioctl(fd, DRM_IOCTL_VC4_CREATE_BO, &create))
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break;
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bo = malloc(sizeof(*bo));
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igt_assert(bo);
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bo->handle = create.handle;
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bo->size = create.size;
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bo->map = igt_vc4_mmap_bo(fd, bo->handle, bo->size,
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PROT_READ | PROT_WRITE);
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igt_list_add_tail(&bo->node, list);
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}
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}
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static void igt_vc4_unmap_free_bo_pool(int fd, struct igt_list *list)
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{
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struct igt_vc4_bo *bo;
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while (!igt_list_empty(list)) {
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bo = igt_list_first_entry(list, bo, node);
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igt_assert(bo);
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igt_list_del(&bo->node);
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munmap(bo->map, bo->size);
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gem_close(fd, bo->handle);
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free(bo);
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}
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}
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static void igt_vc4_trigger_purge(int fd)
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{
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struct igt_list list;
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igt_list_init(&list);
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/* Try to allocate as much as we can to trigger a purge. */
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igt_vc4_alloc_mmap_max_bo(fd, &list, 64 * 1024);
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igt_assert(!igt_list_empty(&list));
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igt_vc4_unmap_free_bo_pool(fd, &list);
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}
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static void igt_vc4_purgeable_subtest_prepare(int fd, struct igt_list *list)
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{
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igt_vc4_unmap_free_bo_pool(fd, list);
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igt_vc4_alloc_mmap_max_bo(fd, list, 64 * 1024);
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igt_assert(!igt_list_empty(list));
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}
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igt_main
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{
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struct igt_vc4_bo *bo;
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struct igt_list list;
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uint32_t *map;
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int fd, ret;
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igt_fixture {
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uint64_t val = 0;
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fd = drm_open_driver(DRIVER_VC4);
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igt_vc4_get_param(fd, DRM_VC4_PARAM_SUPPORTS_MADVISE, &val);
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igt_require(val);
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igt_list_init(&list);
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}
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igt_subtest("mark-willneed") {
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igt_vc4_purgeable_subtest_prepare(fd, &list);
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igt_list_for_each(bo, &list, node)
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igt_assert(igt_vc4_purgeable_bo(fd, bo->handle,
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false));
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}
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igt_subtest("mark-purgeable") {
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igt_vc4_purgeable_subtest_prepare(fd, &list);
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igt_list_for_each(bo, &list, node)
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igt_vc4_purgeable_bo(fd, bo->handle, true);
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igt_list_for_each(bo, &list, node)
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igt_vc4_purgeable_bo(fd, bo->handle, false);
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}
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igt_subtest("mark-purgeable-twice") {
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igt_vc4_purgeable_subtest_prepare(fd, &list);
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bo = igt_list_first_entry(&list, bo, node);
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igt_vc4_purgeable_bo(fd, bo->handle, true);
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igt_vc4_purgeable_bo(fd, bo->handle, true);
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igt_vc4_purgeable_bo(fd, bo->handle, false);
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}
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igt_subtest("mark-unpurgeable-twice") {
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igt_vc4_purgeable_subtest_prepare(fd, &list);
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bo = igt_list_first_entry(&list, bo, node);
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igt_vc4_purgeable_bo(fd, bo->handle, true);
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igt_vc4_purgeable_bo(fd, bo->handle, false);
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igt_vc4_purgeable_bo(fd, bo->handle, false);
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}
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igt_subtest("access-purgeable-bo-mem") {
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igt_vc4_purgeable_subtest_prepare(fd, &list);
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bo = igt_list_first_entry(&list, bo, node);
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map = (uint32_t *)bo->map;
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/* Mark the BO as purgeable, but do not try to allocate a new
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* BO. This should leave the BO in a non-purged state unless
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* someone else tries to allocated a new BO.
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*/
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igt_vc4_purgeable_bo(fd, bo->handle, true);
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/* Accessing a purgeable BO should generate a SIGBUS event if
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* the BO has been purged by the system in the meantime.
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*/
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signal(SIGSEGV, sigtrap);
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signal(SIGBUS, sigtrap);
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ret = setjmp(jmp);
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if (!ret)
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*map = 0xdeadbeef;
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else
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igt_assert(ret == SIGBUS);
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signal(SIGBUS, SIG_DFL);
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signal(SIGSEGV, SIG_DFL);
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}
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igt_subtest("access-purged-bo-mem") {
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igt_vc4_purgeable_subtest_prepare(fd, &list);
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/* Mark the first BO in our list as purgeable and try to
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* allocate a new one. This should trigger a purge and render
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* the first BO inaccessible.
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*/
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bo = igt_list_first_entry(&list, bo, node);
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map = (uint32_t *)bo->map;
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igt_vc4_purgeable_bo(fd, bo->handle, true);
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/* Trigger a purge. */
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igt_vc4_trigger_purge(fd);
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/* Accessing a purged BO should generate a SIGBUS event. */
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signal(SIGSEGV, sigtrap);
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signal(SIGBUS, sigtrap);
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ret = setjmp(jmp);
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if (!ret)
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*map = 0;
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igt_assert(ret == SIGBUS);
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signal(SIGBUS, SIG_DFL);
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signal(SIGSEGV, SIG_DFL);
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igt_vc4_purgeable_bo(fd, bo->handle, false);
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}
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igt_subtest("mark-unpurgeable-check-retained") {
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igt_vc4_purgeable_subtest_prepare(fd, &list);
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igt_list_for_each(bo, &list, node) {
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map = (uint32_t *)bo->map;
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*map = 0xdeadbeef;
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igt_vc4_purgeable_bo(fd, bo->handle, true);
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}
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igt_list_for_each(bo, &list, node) {
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map = (uint32_t *)bo->map;
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if (igt_vc4_purgeable_bo(fd, bo->handle, false))
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igt_assert(*map == 0xdeadbeef);
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}
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}
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igt_subtest("mark-unpurgeable-purged") {
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igt_vc4_purgeable_subtest_prepare(fd, &list);
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igt_list_for_each(bo, &list, node)
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igt_vc4_purgeable_bo(fd, bo->handle, true);
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/* Trigger a purge. */
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igt_vc4_trigger_purge(fd);
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bo = igt_list_first_entry(&list, bo, node);
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map = (uint32_t *)bo->map;
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igt_assert(!igt_vc4_purgeable_bo(fd, bo->handle, false));
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/* Purged BOs are unusable and any access to their
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* mmap-ed region should trigger a SIGBUS.
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*/
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signal(SIGSEGV, sigtrap);
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signal(SIGBUS, sigtrap);
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ret = setjmp(jmp);
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if (!ret)
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*map = 0;
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igt_assert(ret == SIGBUS);
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signal(SIGBUS, SIG_DFL);
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signal(SIGSEGV, SIG_DFL);
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}
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igt_subtest("free-purged-bo") {
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igt_vc4_purgeable_subtest_prepare(fd, &list);
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bo = igt_list_first_entry(&list, bo, node);
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igt_vc4_purgeable_bo(fd, bo->handle, true);
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/* Trigger a purge. */
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igt_vc4_trigger_purge(fd);
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igt_list_del(&bo->node);
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munmap(bo->map, bo->size);
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gem_close(fd, bo->handle);
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free(bo);
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}
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igt_fixture
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close(fd);
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}
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