From 89b93c0a92153d9f685a29ffc48331d7feb52b77 Mon Sep 17 00:00:00 2001 From: Abdiel Janulgue Date: Wed, 14 Jun 2017 11:30:21 +0300 Subject: Convert debugfs shell tests to C version v4: Rename get_sysfs_entry -> read_and_discard_sysfs_entry, assert on null igt_sysfs_get() (Arek). v3: Drop redundant test covered by drv_hangman/basic. Descend thru debugfs path when reading sysfs entries (Chris). v2: Use internal igt_debugfs functions instead of cat and document debugfs tests. Convert sysfs_l3_parity properly. Rename redundant names in tests. Converted: - debugfs_emon_crash - debugfs_wedged - drv_debugfs_reader Cc: Arkadiusz Hiler Signed-off-by: Abdiel Janulgue Reviewed-by: Arkadiusz Hiler --- tests/debugfs_test.c | 98 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 98 insertions(+) create mode 100644 tests/debugfs_test.c (limited to 'tests/debugfs_test.c') diff --git a/tests/debugfs_test.c b/tests/debugfs_test.c new file mode 100644 index 00000000..3f0eaae6 --- /dev/null +++ b/tests/debugfs_test.c @@ -0,0 +1,98 @@ +/* + * Copyright © 2017 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. + */ +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif +#include "igt.h" +#include "igt_sysfs.h" +#include +#include +#include + +static void read_and_discard_sysfs_entries(int path_fd) +{ + struct dirent *dirent; + DIR *dir; + + dir = fdopendir(path_fd); + if (!dir) + return; + + while ((dirent = readdir(dir))) { + if (!strcmp(dirent->d_name, ".") || + !strcmp(dirent->d_name, "..")) + continue; + if (dirent->d_type == DT_DIR) { + int sub_fd = -1; + igt_assert((sub_fd = + openat(path_fd, dirent->d_name, O_RDONLY | + O_DIRECTORY)) > 0); + read_and_discard_sysfs_entries(sub_fd); + close(sub_fd); + } else { + char *buf = igt_sysfs_get(path_fd, dirent->d_name); + igt_assert(buf); + free(buf); + } + } + closedir(dir); +} + +igt_main +{ + int fd = -1, debugfs; + igt_skip_on_simulation(); + + igt_fixture { + fd = drm_open_driver_master(DRIVER_INTEL); + igt_require_gem(fd); + debugfs = igt_debugfs_dir(fd); + } + + igt_subtest("read_all_entries") { + read_and_discard_sysfs_entries(debugfs); + } + + igt_subtest("emon_crash") { + int i; + /* + * This check if we can crash the kernel with + * segmentation-fault by reading + * /sys/kernel/debug/dri/0/i915_emon_status too quickly + */ + for (i = 0; i < 1000; i++) { + char *buf = igt_sysfs_get(debugfs, + "i915_emon_status"); + igt_assert(buf); + free(buf); + } + + /* If we got here, we haven't crashed */ + igt_success(); + } + + igt_fixture { + close(debugfs); + close(fd); + } +} -- cgit v1.2.3