1 /* 2 * (C) 2010,2011 Thomas Renninger <trenn@suse.de>, Novell Inc. 3 * 4 * Licensed under the terms of the GNU GPL License version 2. 5 * 6 */ 7 8 #ifndef __CPUIDLE_INFO_HW__ 9 #define __CPUIDLE_INFO_HW__ 10 11 #include <stdarg.h> 12 #include <time.h> 13 14 #include "idle_monitor/idle_monitors.h" 15 16 #define MONITORS_MAX 20 17 #define MONITOR_NAME_LEN 20 18 #define CSTATE_NAME_LEN 5 19 #define CSTATE_DESC_LEN 60 20 21 int cpu_count; 22 23 /* Hard to define the right names ...: */ 24 enum power_range_e { 25 RANGE_THREAD, /* Lowest in topology hierarcy, AMD: core, Intel: thread 26 kernel sysfs: cpu */ 27 RANGE_CORE, /* AMD: unit, Intel: core, kernel_sysfs: core_id */ 28 RANGE_PACKAGE, /* Package, processor socket */ 29 RANGE_MACHINE, /* Machine, platform wide */ 30 RANGE_MAX }; 31 32 typedef struct cstate { 33 int id; 34 enum power_range_e range; 35 char name[CSTATE_NAME_LEN]; 36 char desc[CSTATE_DESC_LEN]; 37 38 /* either provide a percentage or a general count */ 39 int (*get_count_percent)(unsigned int self_id, double *percent, 40 unsigned int cpu); 41 int (*get_count)(unsigned int self_id, unsigned long long *count, 42 unsigned int cpu); 43 } cstate_t; 44 45 struct cpuidle_monitor { 46 /* Name must not contain whitespaces */ 47 char name[MONITOR_NAME_LEN]; 48 int name_len; 49 int hw_states_num; 50 cstate_t *hw_states; 51 int (*start) (void); 52 int (*stop) (void); 53 struct cpuidle_monitor* (*do_register) (void); 54 void (*unregister)(void); 55 unsigned int overflow_s; 56 int needs_root; 57 }; 58 59 extern long long timespec_diff_us(struct timespec start, struct timespec end); 60 61 #define print_overflow_err(mes, ov) \ 62 { \ 63 fprintf(stderr, gettext("Measure took %u seconds, but registers could " \ 64 "overflow at %u seconds, results " \ 65 "could be inaccurate\n"), mes, ov); \ 66 } 67 68 69 /* Taken over from x86info project sources -> return 0 on success */ 70 #include <sched.h> 71 #include <sys/types.h> 72 #include <unistd.h> 73 static inline int bind_cpu(int cpu) 74 { 75 cpu_set_t set; 76 77 if (sched_getaffinity(getpid(), sizeof(set), &set) == 0) { 78 CPU_ZERO(&set); 79 CPU_SET(cpu, &set); 80 return sched_setaffinity(getpid(), sizeof(set), &set); 81 } 82 return 1; 83 } 84 85 #endif /* __CPUIDLE_INFO_HW__ */ 86