1 #ifndef _MEM_H
2 #define _MEM_H
3 #include "config.h"
4 #include "tst_test.h"
5 #include "tst_cgroup.h"
6 #include "ksm_helper.h"
7
8 #if defined(__powerpc__) || defined(__powerpc64__)
9 #define MAXNODES 256
10 #else
11 #define MAXNODES 512
12 #endif
13 #define MB (1UL<<20)
14 #define KB (1UL<<10)
15 #define PATH_SYS_SYSTEM "/sys/devices/system"
16 #define PATH_SYSVM "/proc/sys/vm/"
17 #define PATH_MEMINFO "/proc/meminfo"
18 #define BITS_PER_LONG (8 * sizeof(long))
19
set_node(unsigned long * array,unsigned int node)20 static inline void set_node(unsigned long *array, unsigned int node)
21 {
22 array[node / BITS_PER_LONG] |= 1UL << (node % BITS_PER_LONG);
23 }
24
clean_node(unsigned long * array)25 static inline void clean_node(unsigned long *array)
26 {
27 unsigned int i;
28
29 for (i = 0; i < MAXNODES / BITS_PER_LONG; i++)
30 array[i] &= 0UL;
31 }
32
33 /* OOM */
34
35 #define LENGTH (3UL<<30)
36 #define TESTMEM (1UL<<30)
37 #define NORMAL 1
38 #define MLOCK 2
39 #define KSM 3
40
41 extern long overcommit;
42 void oom(int testcase, int lite, int retcode, int allow_sigkill);
43 void testoom(int mempolicy, int lite, int retcode, int allow_sigkill);
44
45 /* KSM */
46
47 void create_same_memory(int size, int num, int unit);
48 void test_ksm_merge_across_nodes(unsigned long nr_pages);
49
50 /* THP */
51
52 #define PATH_THP "/sys/kernel/mm/transparent_hugepage/"
53 #define PATH_KHPD PATH_THP "khugepaged/"
54
55 /* HUGETLB */
56
57 #define PATH_HUGEPAGES "/sys/kernel/mm/hugepages/"
58 #define PATH_SHMMAX "/proc/sys/kernel/shmmax"
59
60 void check_hugepage(void);
61 void write_memcg(void);
62
63 /* cpuset/memcg - include/tst_cgroup.h */
64 void write_cpusets(const struct tst_cgroup_group *cg, long nd);
65
66 /* shared */
67 unsigned int get_a_numa_node(void);
68 int path_exist(const char *path, ...);
69 void set_sys_tune(char *sys_file, long tune, int check);
70 long get_sys_tune(char *sys_file);
71
72 void update_shm_size(size_t *shm_size);
73
74 /* MMAP */
75 int range_is_mapped(unsigned long low, unsigned long high);
76 #endif
77