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 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 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
