mirror of
https://github.com/torvalds/linux
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478b27844e
The new test verifies that memory.swap.max and memory.swap.current behave as expected for simple allocation scenarios Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Acked-by: Tejun Heo <tj@kernel.org> Acked-by: Roman Gushchin <guro@fb.com> Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
42 lines
1.5 KiB
C
42 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#include <stdlib.h>
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#define PAGE_SIZE 4096
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#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
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#define MB(x) (x << 20)
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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 abs(a - b) <= (a + b) / 100 * err;
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}
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extern int cg_find_unified_root(char *root, size_t len);
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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 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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long cg_read_key_long(const char *cgroup, const char *control, const char *key);
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extern int cg_write(const char *cgroup, const char *control, char *buf);
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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_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 get_temp_fd(void);
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extern int alloc_pagecache(int fd, size_t size);
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extern int alloc_anon(const char *cgroup, void *arg);
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extern int is_swap_enabled(void);
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