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1 #ifndef _MEM_H
2 #define _MEM_H
3 #include "config.h"
4 #include "test.h"
5 
6 #if defined(__powerpc__) || defined(__powerpc64__)
7 #define MAXNODES		256
8 #else
9 #define MAXNODES		512
10 #endif
11 #define MB			(1UL<<20)
12 #define KB			(1UL<<10)
13 #define PATH_SYS_SYSTEM		"/sys/devices/system"
14 #define PATH_SYSVM		"/proc/sys/vm/"
15 #define PATH_MEMINFO		"/proc/meminfo"
16 #define BITS_PER_LONG           (8 * sizeof(long))
17 
set_node(unsigned long * array,unsigned int node)18 static inline void set_node(unsigned long *array, unsigned int node)
19 {
20 	array[node / BITS_PER_LONG] |= 1UL << (node % BITS_PER_LONG);
21 }
22 
clean_node(unsigned long * array)23 static inline void clean_node(unsigned long *array)
24 {
25 	unsigned int i;
26 
27 	for (i = 0; i < MAXNODES / BITS_PER_LONG; i++)
28 		array[i] &= 0UL;
29 }
30 
31 /* OOM */
32 
33 #define LENGTH			(3UL<<30)
34 #define TESTMEM			(1UL<<30)
35 #define NORMAL			1
36 #define MLOCK			2
37 #define KSM			3
38 
39 long overcommit;
40 void oom(int testcase, int lite, int retcode, int allow_sigkill);
41 void testoom(int mempolicy, int lite, int retcode, int allow_sigkill);
42 
43 /* KSM */
44 
45 #define PATH_KSM		"/sys/kernel/mm/ksm/"
46 
47 void save_max_page_sharing(void);
48 void restore_max_page_sharing(void);
49 void test_ksm_merge_across_nodes(unsigned long nr_pages);
50 
51 /* THP */
52 
53 #define PATH_THP		"/sys/kernel/mm/transparent_hugepage/"
54 #define PATH_KHPD		PATH_THP "khugepaged/"
55 
56 /* HUGETLB */
57 
58 #define PATH_SHMMAX		"/proc/sys/kernel/shmmax"
59 
60 void write_memcg(void);
61 void create_same_memory(int size, int num, int unit);
62 int  opt_num, opt_size, opt_unit;
63 char *opt_numstr, *opt_sizestr, *opt_unitstr;
64 void check_ksm_options(int *size, int *num, int *unit);
65 void ksm_usage(void);
66 
67 /* cpuset/memcg */
68 
69 #define CPATH			"/dev/cpuset"
70 #define CPATH_NEW		CPATH "/1"
71 #define MEMCG_PATH		"/dev/cgroup"
72 #define MEMCG_PATH_NEW		MEMCG_PATH "/1"
73 #define MEMCG_LIMIT		MEMCG_PATH_NEW "/memory.limit_in_bytes"
74 #define MEMCG_SW_LIMIT		MEMCG_PATH_NEW "/memory.memsw.limit_in_bytes"
75 #if HAVE_SYS_EVENTFD_H
76 #define PATH_OOMCTRL		MEMCG_PATH_NEW "/memory.oom_control"
77 #define PATH_EVTCTRL		MEMCG_PATH_NEW "/cgroup.event_control"
78 #endif
79 
80 void read_cpuset_files(char *prefix, char *filename, char *retbuf);
81 void write_cpuset_files(char *prefix, char *filename, char *buf);
82 void write_cpusets(long nd);
83 void mount_mem(char *name, char *fs, char *options, char *path, char *path_new);
84 void umount_mem(char *path, char *path_new);
85 
86 /* shared */
87 unsigned int get_a_numa_node(void (*cleanup_fn)(void));
88 int  path_exist(const char *path, ...);
89 long read_meminfo(char *item);
90 void set_sys_tune(char *sys_file, long tune, int check);
91 long get_sys_tune(char *sys_file);
92 void cleanup(void);
93 void setup(void);
94 
95 void update_shm_size(size_t *shm_size);
96 
97 /* MMAP */
98 int range_is_mapped(void (*cleanup_fn) (void), unsigned long low, unsigned long high);
99 #endif
100