1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #include <stdbool.h> 3 #include <stdlib.h> 4 5 #define PAGE_SIZE 4096 6 7 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) 8 9 #define MB(x) (x << 20) 10 11 /* 12 * Checks if two given values differ by less than err% of their sum. 13 */ 14 static inline int values_close(long a, long b, int err) 15 { 16 return abs(a - b) <= (a + b) / 100 * err; 17 } 18 19 extern int cg_find_unified_root(char *root, size_t len); 20 extern char *cg_name(const char *root, const char *name); 21 extern char *cg_name_indexed(const char *root, const char *name, int index); 22 extern char *cg_control(const char *cgroup, const char *control); 23 extern int cg_create(const char *cgroup); 24 extern int cg_destroy(const char *cgroup); 25 extern int cg_read(const char *cgroup, const char *control, 26 char *buf, size_t len); 27 extern int cg_read_strcmp(const char *cgroup, const char *control, 28 const char *expected); 29 extern int cg_read_strstr(const char *cgroup, const char *control, 30 const char *needle); 31 extern long cg_read_long(const char *cgroup, const char *control); 32 long cg_read_key_long(const char *cgroup, const char *control, const char *key); 33 extern long cg_read_lc(const char *cgroup, const char *control); 34 extern int cg_write(const char *cgroup, const char *control, char *buf); 35 extern int cg_run(const char *cgroup, 36 int (*fn)(const char *cgroup, void *arg), 37 void *arg); 38 extern int cg_enter(const char *cgroup, int pid); 39 extern int cg_enter_current(const char *cgroup); 40 extern int cg_enter_current_thread(const char *cgroup); 41 extern int cg_run_nowait(const char *cgroup, 42 int (*fn)(const char *cgroup, void *arg), 43 void *arg); 44 extern int get_temp_fd(void); 45 extern int alloc_pagecache(int fd, size_t size); 46 extern int alloc_anon(const char *cgroup, void *arg); 47 extern int is_swap_enabled(void); 48 extern int set_oom_adj_score(int pid, int score); 49 extern int cg_wait_for_proc_count(const char *cgroup, int count); 50 extern int cg_killall(const char *cgroup); 51 extern ssize_t proc_read_text(int pid, bool thread, const char *item, char *buf, size_t size); 52 extern int proc_read_strstr(int pid, bool thread, const char *item, const char *needle); 53 extern pid_t clone_into_cgroup(int cgroup_fd); 54 extern int clone_reap(pid_t pid, int options); 55 extern int clone_into_cgroup_run_wait(const char *cgroup); 56 extern int dirfd_open_opath(const char *dir); 57 extern int cg_prepare_for_wait(const char *cgroup); 58 extern int cg_wait_for(int fd); 59