mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-09-04 18:49:41 +00:00
0925275a17
Non-functional change, the control variable will be wired in a separate commit. Signed-off-by: Michal Koutný <mkoutny@suse.com> Signed-off-by: Tejun Heo <tj@kernel.org>
73 lines
3.0 KiB
C
73 lines
3.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#include <stdbool.h>
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#include <stdlib.h>
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#ifndef PAGE_SIZE
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#define PAGE_SIZE 4096
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#endif
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#define MB(x) (x << 20)
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#define USEC_PER_SEC 1000000L
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#define NSEC_PER_SEC 1000000000L
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#define TEST_UID 65534 /* usually nobody, any !root is fine */
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#define CG_THREADS_FILE (!cg_test_v1_named ? "cgroup.threads" : "tasks")
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#define CG_NAMED_NAME "selftest"
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#define CG_PATH_FORMAT (!cg_test_v1_named ? "0::%s" : (":name=" CG_NAMED_NAME ":%s"))
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/*
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* Checks if two given values differ by less than err% of their sum.
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*/
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static inline int values_close(long a, long b, int err)
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{
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return labs(a - b) <= (a + b) / 100 * err;
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}
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extern ssize_t read_text(const char *path, char *buf, size_t max_len);
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extern ssize_t write_text(const char *path, char *buf, ssize_t len);
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extern int cg_find_controller_root(char *root, size_t len, const char *controller);
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extern int cg_find_unified_root(char *root, size_t len, bool *nsdelegate);
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extern char *cg_name(const char *root, const char *name);
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extern char *cg_name_indexed(const char *root, const char *name, int index);
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extern char *cg_control(const char *cgroup, const char *control);
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extern int cg_create(const char *cgroup);
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extern int cg_destroy(const char *cgroup);
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extern int cg_read(const char *cgroup, const char *control,
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char *buf, size_t len);
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extern int cg_read_strcmp(const char *cgroup, const char *control,
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const char *expected);
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extern int cg_read_strstr(const char *cgroup, const char *control,
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const char *needle);
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extern long cg_read_long(const char *cgroup, const char *control);
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extern long cg_read_long_fd(int fd);
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long cg_read_key_long(const char *cgroup, const char *control, const char *key);
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extern long cg_read_lc(const char *cgroup, const char *control);
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extern int cg_write(const char *cgroup, const char *control, char *buf);
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extern int cg_open(const char *cgroup, const char *control, int flags);
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int cg_write_numeric(const char *cgroup, const char *control, long value);
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extern int cg_run(const char *cgroup,
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int (*fn)(const char *cgroup, void *arg),
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void *arg);
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extern int cg_enter(const char *cgroup, int pid);
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extern int cg_enter_current(const char *cgroup);
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extern int cg_enter_current_thread(const char *cgroup);
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extern int cg_run_nowait(const char *cgroup,
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int (*fn)(const char *cgroup, void *arg),
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void *arg);
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extern int cg_wait_for_proc_count(const char *cgroup, int count);
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extern int cg_killall(const char *cgroup);
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int proc_mount_contains(const char *option);
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extern ssize_t proc_read_text(int pid, bool thread, const char *item, char *buf, size_t size);
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extern int proc_read_strstr(int pid, bool thread, const char *item, const char *needle);
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extern pid_t clone_into_cgroup(int cgroup_fd);
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extern int clone_reap(pid_t pid, int options);
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extern int clone_into_cgroup_run_wait(const char *cgroup);
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extern int dirfd_open_opath(const char *dir);
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extern int cg_prepare_for_wait(const char *cgroup);
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extern int memcg_prepare_for_wait(const char *cgroup);
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extern int cg_wait_for(int fd);
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extern bool cg_test_v1_named;
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