83 lines
2.0 KiB
C
83 lines
2.0 KiB
C
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) Linux Test Project, 2011-2021
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*/
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#ifndef _MEM_H
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#define _MEM_H
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#include "config.h"
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#include "tst_test.h"
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#include "ksm_helper.h"
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#include "tst_memutils.h"
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#if defined(__powerpc__) || defined(__powerpc64__)
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#define MAXNODES 256
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#else
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#define MAXNODES 512
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#endif
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#define MB (1UL<<20)
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#define KB (1UL<<10)
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#define PATH_SYS_SYSTEM "/sys/devices/system"
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#define PATH_SYSVM "/proc/sys/vm/"
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#define PATH_MEMINFO "/proc/meminfo"
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#define BITS_PER_LONG (8 * sizeof(long))
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static inline void set_node(unsigned long *array, unsigned int node)
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{
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array[node / BITS_PER_LONG] |= 1UL << (node % BITS_PER_LONG);
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}
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static inline void clean_node(unsigned long *array)
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{
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unsigned int i;
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for (i = 0; i < MAXNODES / BITS_PER_LONG; i++)
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array[i] &= 0UL;
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}
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/* OOM */
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#define LENGTH (3UL<<30)
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#define TESTMEM (1UL<<30)
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#define NORMAL 1
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#define MLOCK 2
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#define KSM 3
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extern long overcommit;
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void oom(int testcase, int lite, int retcode, int allow_sigkill);
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void testoom(int mempolicy, int lite, int retcode, int allow_sigkill);
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/* KSM */
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void create_same_memory(int size, int num, int unit);
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void test_ksm_merge_across_nodes(unsigned long nr_pages);
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void ksm_group_check(int run, int pg_shared, int pg_sharing, int pg_volatile,
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int pg_unshared, int sleep_msecs, int pages_to_scan);
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/* THP */
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#define PATH_THP "/sys/kernel/mm/transparent_hugepage/"
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#define PATH_KHPD PATH_THP "khugepaged/"
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/* HUGETLB */
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#define PATH_HUGEPAGES "/sys/kernel/mm/hugepages/"
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#define PATH_SHMMAX "/proc/sys/kernel/shmmax"
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void check_hugepage(void);
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void write_memcg(void);
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/* cpuset/memcg - include/tst_cgroup.h */
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void write_cpusets(const struct tst_cg_group *cg, long nd);
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/* shared */
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unsigned int get_a_numa_node(void);
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int path_exist(const char *path, ...);
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void set_sys_tune(char *sys_file, long tune, int check);
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long get_sys_tune(char *sys_file);
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void update_shm_size(size_t *shm_size);
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/* MMAP */
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int range_is_mapped(unsigned long low, unsigned long high);
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#endif
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