1 /** 2 * @file opd_perfmon.h 3 * perfmonctl() handling 4 * 5 * @remark Copyright 2003 OProfile authors 6 * @remark Read the file COPYING 7 * 8 * @author John Levon 9 */ 10 11 #ifndef OPD_PERFMON_H 12 #define OPD_PERFMON_H 13 14 #ifdef __ia64__ 15 16 #include <stdlib.h> 17 18 void perfmon_init(void); 19 void perfmon_exit(void); 20 void perfmon_start(void); 21 void perfmon_stop(void); 22 23 /* The following is from asm/perfmon.h. When it's installed on 24 * enough boxes, we can remove this and include the platform 25 * perfmon.h 26 */ 27 28 typedef unsigned char pfm_uuid_t[16]; /* custom sampling buffer identifier type */ 29 30 /* 31 * Request structure used to define a context 32 */ 33 typedef struct { 34 pfm_uuid_t ctx_smpl_buf_id; /* which buffer format to use (if needed) */ 35 unsigned long ctx_flags; /* noblock/block */ 36 unsigned short ctx_nextra_sets; /* number of extra event sets (you always get 1) */ 37 unsigned short ctx_reserved1; /* for future use */ 38 int ctx_fd; /* return arg: unique identification for context */ 39 void *ctx_smpl_vaddr; /* return arg: virtual address of sampling buffer, is used */ 40 unsigned long ctx_reserved2[11];/* for future use */ 41 } pfarg_context_t; 42 43 /* 44 * Request structure used to write/read a PMC or PMD 45 */ 46 typedef struct { 47 unsigned int reg_num; /* which register */ 48 unsigned short reg_set; /* event set for this register */ 49 unsigned short reg_reserved1; /* for future use */ 50 51 unsigned long reg_value; /* initial pmc/pmd value */ 52 unsigned long reg_flags; /* input: pmc/pmd flags, return: reg error */ 53 54 unsigned long reg_long_reset; /* reset after buffer overflow notification */ 55 unsigned long reg_short_reset; /* reset after counter overflow */ 56 57 unsigned long reg_reset_pmds[4]; /* which other counters to reset on overflow */ 58 unsigned long reg_random_seed; /* seed value when randomization is used */ 59 unsigned long reg_random_mask; /* bitmask used to limit random value */ 60 unsigned long reg_last_reset_val;/* return: PMD last reset value */ 61 62 unsigned long reg_smpl_pmds[4]; /* which pmds are accessed when PMC overflows */ 63 unsigned long reg_smpl_eventid; /* opaque sampling event identifier */ 64 65 unsigned long reg_reserved2[3]; /* for future use */ 66 } pfarg_reg_t; 67 68 typedef struct { 69 pid_t load_pid; /* process to load the context into */ 70 unsigned short load_set; /* first event set to load */ 71 unsigned short load_reserved1; /* for future use */ 72 unsigned long load_reserved2[3]; /* for future use */ 73 } pfarg_load_t; 74 75 #define PFM_WRITE_PMCS 0x01 76 #define PFM_WRITE_PMDS 0x02 77 #define PFM_STOP 0x04 78 #define PFM_START 0x05 79 #define PFM_CREATE_CONTEXT 0x08 80 #define PFM_LOAD_CONTEXT 0x10 81 #define PFM_FL_SYSTEM_WIDE 0x02 82 83 #else 84 85 void perfmon_init(void) 86 { 87 } 88 89 90 void perfmon_exit(void) 91 { 92 } 93 94 95 void perfmon_start(void) 96 { 97 } 98 99 100 void perfmon_stop(void) 101 { 102 } 103 104 #endif /* __ia64__ */ 105 106 #endif /* OPD_PERFMON_H */ 107
