1 // SPDX-License-Identifier: GPL-2.0 2 3 #include <stdint.h> 4 #include <string.h> 5 #include <time.h> 6 #include <sched.h> 7 #include <stdbool.h> 8 #include <stdlib.h> 9 10 /* 11 * '18446744073709551615\0' 12 */ 13 #define BUFF_U64_STR_SIZE 24 14 #define MAX_PATH 1024 15 #define MAX_NICE 20 16 #define MIN_NICE -19 17 18 #ifndef ARRAY_SIZE 19 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x))) 20 #endif 21 22 /* Calculate string length at compile time (excluding null terminator) */ 23 #define STRING_LENGTH(s) (ARRAY_SIZE(s) - sizeof(*(s))) 24 25 /* Compare string with static string, length determined at compile time */ 26 #define strncmp_static(s1, s2) strncmp(s1, s2, ARRAY_SIZE(s2)) 27 28 /** 29 * str_has_prefix - Test if a string has a given prefix 30 * @str: The string to test 31 * @prefix: The string to see if @str starts with 32 * 33 * Returns: true if @str starts with @prefix, false otherwise 34 */ 35 static inline bool str_has_prefix(const char *str, const char *prefix) 36 { 37 return strncmp(str, prefix, strlen(prefix)) == 0; 38 } 39 40 #define container_of(ptr, type, member)({ \ 41 const typeof(((type *)0)->member) *__mptr = (ptr); \ 42 (type *)((char *)__mptr - offsetof(type, member)) ; }) 43 44 extern int config_debug; 45 void debug_msg(const char *fmt, ...); 46 void err_msg(const char *fmt, ...); 47 void fatal(const char *fmt, ...); 48 49 long parse_seconds_duration(char *val); 50 void get_duration(time_t start_time, char *output, int output_size); 51 52 char *parse_optional_arg(int argc, char **argv); 53 long long get_llong_from_str(char *start); 54 55 static inline void 56 update_min(unsigned long long *a, unsigned long long *b) 57 { 58 if (*a > *b) 59 *a = *b; 60 } 61 62 static inline void 63 update_max(unsigned long long *a, unsigned long long *b) 64 { 65 if (*a < *b) 66 *a = *b; 67 } 68 69 static inline void 70 update_sum(unsigned long long *a, unsigned long long *b) 71 { 72 *a += *b; 73 } 74 75 #ifndef SCHED_ATTR_SIZE_VER0 76 struct sched_attr { 77 uint32_t size; 78 uint32_t sched_policy; 79 uint64_t sched_flags; 80 int32_t sched_nice; 81 uint32_t sched_priority; 82 uint64_t sched_runtime; 83 uint64_t sched_deadline; 84 uint64_t sched_period; 85 }; 86 #endif /* SCHED_ATTR_SIZE_VER0 */ 87 88 enum stack_format { 89 STACK_FORMAT_TRUNCATE, 90 STACK_FORMAT_SKIP, 91 STACK_FORMAT_FULL 92 }; 93 94 int parse_prio(char *arg, struct sched_attr *sched_param); 95 int parse_cpu_set(char *cpu_list, cpu_set_t *set); 96 int parse_stack_format(char *arg); 97 int __set_sched_attr(int pid, struct sched_attr *attr); 98 int set_comm_sched_attr(const char *comm_prefix, struct sched_attr *attr); 99 int set_comm_cgroup(const char *comm_prefix, const char *cgroup); 100 int set_pid_cgroup(pid_t pid, const char *cgroup); 101 int set_cpu_dma_latency(int32_t latency); 102 void *calloc_fatal(size_t n, size_t size); 103 void *reallocarray_fatal(void *p, size_t n, size_t size); 104 char *strdup_fatal(const char *s); 105 #ifdef HAVE_LIBCPUPOWER_SUPPORT 106 int save_cpu_idle_disable_state(unsigned int cpu); 107 int restore_cpu_idle_disable_state(unsigned int cpu); 108 void free_cpu_idle_disable_states(void); 109 int set_deepest_cpu_idle_state(unsigned int cpu, unsigned int state); 110 static inline int have_libcpupower_support(void) { return 1; } 111 #else 112 static inline int save_cpu_idle_disable_state(unsigned int cpu) { return -1; } 113 static inline int restore_cpu_idle_disable_state(unsigned int cpu) { return -1; } 114 static inline void free_cpu_idle_disable_states(void) { } 115 static inline int set_deepest_cpu_idle_state(unsigned int cpu, unsigned int state) { return -1; } 116 static inline int have_libcpupower_support(void) { return 0; } 117 #endif /* HAVE_LIBCPUPOWER_SUPPORT */ 118 int auto_house_keeping(cpu_set_t *monitored_cpus); 119 __attribute__((__warn_unused_result__)) int strtoi(const char *s, int *res); 120 121 #define ns_to_usf(x) (((double)x/1000)) 122 #define ns_to_per(total, part) ((part * 100) / (double)total) 123 124 enum result { 125 PASSED = EXIT_SUCCESS, 126 ERROR = EXIT_FAILURE, 127 FAILED, /* test hit the stop tracing condition */ 128 }; 129