From 82208160ae35ca00b5494c5c90c1a8721b15bdb1 Mon Sep 17 00:00:00 2001 From: Emilio López Date: Wed, 19 Oct 2016 09:49:48 -0300 Subject: selftest: sync: basic tests for sw_sync framework MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit These tests are based on the libsync test suite from Android. This commit lays the ground for future tests, as well as includes tests for a variety of basic allocation commands. Signed-off-by: Emilio López Signed-off-by: Shuah Khan --- tools/testing/selftests/sync/sync.c | 221 ++++++++++++++++++++++++++++++++++++ 1 file changed, 221 insertions(+) create mode 100644 tools/testing/selftests/sync/sync.c (limited to 'tools/testing/selftests/sync/sync.c') diff --git a/tools/testing/selftests/sync/sync.c b/tools/testing/selftests/sync/sync.c new file mode 100644 index 000000000000..f3d599f249b9 --- /dev/null +++ b/tools/testing/selftests/sync/sync.c @@ -0,0 +1,221 @@ +/* + * sync / sw_sync abstraction + * Copyright 2015-2016 Collabora Ltd. + * + * Based on the implementation from the Android Open Source Project, + * + * Copyright 2012 Google, Inc + * + * 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 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 +#include +#include +#include +#include +#include + +#include +#include +#include + +#include "sync.h" +#include "sw_sync.h" + +#include + + +/* SW_SYNC ioctls */ +struct sw_sync_create_fence_data { + __u32 value; + char name[32]; + __s32 fence; +}; + +#define SW_SYNC_IOC_MAGIC 'W' +#define SW_SYNC_IOC_CREATE_FENCE _IOWR(SW_SYNC_IOC_MAGIC, 0,\ + struct sw_sync_create_fence_data) +#define SW_SYNC_IOC_INC _IOW(SW_SYNC_IOC_MAGIC, 1, __u32) + + +int sync_wait(int fd, int timeout) +{ + struct pollfd fds; + + fds.fd = fd; + fds.events = POLLIN | POLLERR; + + return poll(&fds, 1, timeout); +} + +int sync_merge(const char *name, int fd1, int fd2) +{ + struct sync_merge_data data = {}; + int err; + + data.fd2 = fd2; + strncpy(data.name, name, sizeof(data.name) - 1); + data.name[sizeof(data.name) - 1] = '\0'; + + err = ioctl(fd1, SYNC_IOC_MERGE, &data); + if (err < 0) + return err; + + return data.fence; +} + +static struct sync_file_info *sync_file_info(int fd) +{ + struct sync_file_info *info; + struct sync_fence_info *fence_info; + int err, num_fences; + + info = calloc(1, sizeof(*info)); + if (info == NULL) + return NULL; + + err = ioctl(fd, SYNC_IOC_FILE_INFO, info); + if (err < 0) { + free(info); + return NULL; + } + + num_fences = info->num_fences; + + if (num_fences) { + info->flags = 0; + info->num_fences = num_fences; + + fence_info = calloc(num_fences, sizeof(*fence_info)); + if (!fence_info) { + free(info); + return NULL; + } + + info->sync_fence_info = (uint64_t)fence_info; + + err = ioctl(fd, SYNC_IOC_FILE_INFO, info); + if (err < 0) { + free(fence_info); + free(info); + return NULL; + } + } + + return info; +} + +static void sync_file_info_free(struct sync_file_info *info) +{ + free((void *)info->sync_fence_info); + free(info); +} + +int sync_fence_size(int fd) +{ + int count; + struct sync_file_info *info = sync_file_info(fd); + + if (!info) + return 0; + + count = info->num_fences; + + sync_file_info_free(info); + + return count; +} + +int sync_fence_count_with_status(int fd, int status) +{ + unsigned int i, count = 0; + struct sync_fence_info *fence_info = NULL; + struct sync_file_info *info = sync_file_info(fd); + + if (!info) + return -1; + + fence_info = (struct sync_fence_info *)info->sync_fence_info; + for (i = 0 ; i < info->num_fences ; i++) { + if (fence_info[i].status == status) + count++; + } + + sync_file_info_free(info); + + return count; +} + +int sw_sync_timeline_create(void) +{ + return open("/sys/kernel/debug/sync/sw_sync", O_RDWR); +} + +int sw_sync_timeline_inc(int fd, unsigned int count) +{ + __u32 arg = count; + + return ioctl(fd, SW_SYNC_IOC_INC, &arg); +} + +int sw_sync_timeline_is_valid(int fd) +{ + int status; + + if (fd == -1) + return 0; + + status = fcntl(fd, F_GETFD, 0); + return (status >= 0); +} + +void sw_sync_timeline_destroy(int fd) +{ + if (sw_sync_timeline_is_valid(fd)) + close(fd); +} + +int sw_sync_fence_create(int fd, const char *name, unsigned int value) +{ + struct sw_sync_create_fence_data data = {}; + int err; + + data.value = value; + strncpy(data.name, name, sizeof(data.name) - 1); + data.name[sizeof(data.name) - 1] = '\0'; + + err = ioctl(fd, SW_SYNC_IOC_CREATE_FENCE, &data); + if (err < 0) + return err; + + return data.fence; +} + +int sw_sync_fence_is_valid(int fd) +{ + /* Same code! */ + return sw_sync_timeline_is_valid(fd); +} + +void sw_sync_fence_destroy(int fd) +{ + if (sw_sync_fence_is_valid(fd)) + close(fd); +} -- cgit v1.2.3