utils.h

 1// SPDX-License-Identifier: GPL-2.0
 2
 3#include <stdint.h>
 4#include <time.h>
 5#include <sched.h>
 6
 7/*
 8 * '18446744073709551615\0'
 9 */
10#define BUFF_U64_STR_SIZE	24
11#define MAX_PATH		1024
12#define MAX_NICE		20
13#define MIN_NICE		-19
14
15#define container_of(ptr, type, member)({			\
16	const typeof(((type *)0)->member) *__mptr = (ptr);	\
17	(type *)((char *)__mptr - offsetof(type, member)) ; })
18
19extern int config_debug;
20void debug_msg(const char *fmt, ...);
21void err_msg(const char *fmt, ...);
22void fatal(const char *fmt, ...);
23
24long parse_seconds_duration(char *val);
25void get_duration(time_t start_time, char *output, int output_size);
26
27int parse_cpu_list(char *cpu_list, char **monitored_cpus);
28char *parse_optional_arg(int argc, char **argv);
29long long get_llong_from_str(char *start);
30
31static inline void
32update_min(unsigned long long *a, unsigned long long *b)
33{
34	if (*a > *b)
35		*a = *b;
36}
37
38static inline void
39update_max(unsigned long long *a, unsigned long long *b)
40{
41	if (*a < *b)
42		*a = *b;
43}
44
45static inline void
46update_sum(unsigned long long *a, unsigned long long *b)
47{
48	*a += *b;
49}
50
51#ifndef SCHED_ATTR_SIZE_VER0
52struct sched_attr {
53	uint32_t size;
54	uint32_t sched_policy;
55	uint64_t sched_flags;
56	int32_t sched_nice;
57	uint32_t sched_priority;
58	uint64_t sched_runtime;
59	uint64_t sched_deadline;
60	uint64_t sched_period;
61};
62#endif /* SCHED_ATTR_SIZE_VER0 */
63
64int parse_prio(char *arg, struct sched_attr *sched_param);
65int parse_cpu_set(char *cpu_list, cpu_set_t *set);
66int __set_sched_attr(int pid, struct sched_attr *attr);
67int set_comm_sched_attr(const char *comm_prefix, struct sched_attr *attr);
68int set_comm_cgroup(const char *comm_prefix, const char *cgroup);
69int set_pid_cgroup(pid_t pid, const char *cgroup);
70int set_cpu_dma_latency(int32_t latency);
71#ifdef HAVE_LIBCPUPOWER_SUPPORT
72int save_cpu_idle_disable_state(unsigned int cpu);
73int restore_cpu_idle_disable_state(unsigned int cpu);
74void free_cpu_idle_disable_states(void);
75int set_deepest_cpu_idle_state(unsigned int cpu, unsigned int state);
76static inline int have_libcpupower_support(void) { return 1; }
77#else
78static inline int save_cpu_idle_disable_state(unsigned int cpu) { return -1; }
79static inline int restore_cpu_idle_disable_state(unsigned int cpu) { return -1; }
80static inline void free_cpu_idle_disable_states(void) { }
81static inline int set_deepest_cpu_idle_state(unsigned int cpu, unsigned int state) { return -1; }
82static inline int have_libcpupower_support(void) { return 0; }
83#endif /* HAVE_LIBCPUPOWER_SUPPORT */
84int auto_house_keeping(cpu_set_t *monitored_cpus);
85
86#define ns_to_usf(x) (((double)x/1000))
87#define ns_to_per(total, part) ((part * 100) / (double)total)
88
89enum result {
90	PASSED = 0, /* same as EXIT_SUCCESS */
91	ERROR = 1,  /* same as EXIT_FAILURE, an error in arguments */
92	FAILED = 2, /* test hit the stop tracing condition */
93};