diff options
Diffstat (limited to 'tools/testing/selftests/cgroup/cgroup_util.h')
-rw-r--r-- | tools/testing/selftests/cgroup/cgroup_util.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/tools/testing/selftests/cgroup/cgroup_util.h b/tools/testing/selftests/cgroup/cgroup_util.h new file mode 100644 index 000000000..c92df4e5d --- /dev/null +++ b/tools/testing/selftests/cgroup/cgroup_util.h @@ -0,0 +1,64 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#include <stdbool.h> +#include <stdlib.h> + +#include "../kselftest.h" + +#define PAGE_SIZE 4096 + +#define MB(x) (x << 20) + +#define USEC_PER_SEC 1000000L +#define NSEC_PER_SEC 1000000000L + +/* + * Checks if two given values differ by less than err% of their sum. + */ +static inline int values_close(long a, long b, int err) +{ + return abs(a - b) <= (a + b) / 100 * err; +} + +extern int cg_find_unified_root(char *root, size_t len); +extern char *cg_name(const char *root, const char *name); +extern char *cg_name_indexed(const char *root, const char *name, int index); +extern char *cg_control(const char *cgroup, const char *control); +extern int cg_create(const char *cgroup); +extern int cg_destroy(const char *cgroup); +extern int cg_read(const char *cgroup, const char *control, + char *buf, size_t len); +extern int cg_read_strcmp(const char *cgroup, const char *control, + const char *expected); +extern int cg_read_strstr(const char *cgroup, const char *control, + const char *needle); +extern long cg_read_long(const char *cgroup, const char *control); +long cg_read_key_long(const char *cgroup, const char *control, const char *key); +extern long cg_read_lc(const char *cgroup, const char *control); +extern int cg_write(const char *cgroup, const char *control, char *buf); +int cg_write_numeric(const char *cgroup, const char *control, long value); +extern int cg_run(const char *cgroup, + int (*fn)(const char *cgroup, void *arg), + void *arg); +extern int cg_enter(const char *cgroup, int pid); +extern int cg_enter_current(const char *cgroup); +extern int cg_enter_current_thread(const char *cgroup); +extern int cg_run_nowait(const char *cgroup, + int (*fn)(const char *cgroup, void *arg), + void *arg); +extern int get_temp_fd(void); +extern int alloc_pagecache(int fd, size_t size); +extern int alloc_anon(const char *cgroup, void *arg); +extern int is_swap_enabled(void); +extern int set_oom_adj_score(int pid, int score); +extern int cg_wait_for_proc_count(const char *cgroup, int count); +extern int cg_killall(const char *cgroup); +int proc_mount_contains(const char *option); +extern ssize_t proc_read_text(int pid, bool thread, const char *item, char *buf, size_t size); +extern int proc_read_strstr(int pid, bool thread, const char *item, const char *needle); +extern pid_t clone_into_cgroup(int cgroup_fd); +extern int clone_reap(pid_t pid, int options); +extern int clone_into_cgroup_run_wait(const char *cgroup); +extern int dirfd_open_opath(const char *dir); +extern int cg_prepare_for_wait(const char *cgroup); +extern int memcg_prepare_for_wait(const char *cgroup); +extern int cg_wait_for(int fd); |