1 #ifndef _MEM_H 2 #define _MEM_H 3 #include "config.h" 4 #include "tst_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 create_same_memory(int size, int num, int unit); 48 void save_max_page_sharing(void); 49 void restore_max_page_sharing(void); 50 void test_ksm_merge_across_nodes(unsigned long nr_pages); 51 52 /* THP */ 53 54 #define PATH_THP "/sys/kernel/mm/transparent_hugepage/" 55 #define PATH_KHPD PATH_THP "khugepaged/" 56 57 /* HUGETLB */ 58 59 #define PATH_HUGEPAGES "/sys/kernel/mm/hugepages/" 60 #define PATH_SHMMAX "/proc/sys/kernel/shmmax" 61 62 void check_hugepage(void); 63 void write_memcg(void); 64 65 /* cpuset/memcg */ 66 67 #define CPATH "/dev/cpuset" 68 #define CPATH_NEW CPATH "/1" 69 #define MEMCG_PATH "/dev/cgroup" 70 #define MEMCG_PATH_NEW MEMCG_PATH "/1" 71 #define MEMCG_LIMIT MEMCG_PATH_NEW "/memory.limit_in_bytes" 72 #define MEMCG_SW_LIMIT MEMCG_PATH_NEW "/memory.memsw.limit_in_bytes" 73 #if HAVE_SYS_EVENTFD_H 74 #define PATH_OOMCTRL MEMCG_PATH_NEW "/memory.oom_control" 75 #define PATH_EVTCTRL MEMCG_PATH_NEW "/cgroup.event_control" 76 #endif 77 78 void read_cpuset_files(char *prefix, char *filename, char *retbuf); 79 void write_cpuset_files(char *prefix, char *filename, char *buf); 80 void write_cpusets(long nd); 81 void mount_mem(char *name, char *fs, char *options, char *path, char *path_new); 82 void umount_mem(char *path, char *path_new); 83 84 /* shared */ 85 unsigned int get_a_numa_node(void); 86 int path_exist(const char *path, ...); 87 void set_sys_tune(char *sys_file, long tune, int check); 88 long get_sys_tune(char *sys_file); 89 90 void update_shm_size(size_t *shm_size); 91 92 /* MMAP */ 93 int range_is_mapped(unsigned long low, unsigned long high); 94 #endif 95
