1 #ifndef _PERF_BRANCH_H 2 #define _PERF_BRANCH_H 1 3 /* 4 * The linux/stddef.h isn't need here, but is needed for __always_inline used 5 * in files included from uapi/linux/perf_event.h such as 6 * /usr/include/linux/swab.h and /usr/include/linux/byteorder/little_endian.h, 7 * detected in at least musl libc, used in Alpine Linux. -acme 8 */ 9 #include <stdio.h> 10 #include <stdint.h> 11 #include <linux/compiler.h> 12 #include <linux/stddef.h> 13 #include <linux/perf_event.h> 14 #include <linux/types.h> 15 #include "event.h" 16 17 struct branch_flags { 18 union { 19 u64 value; 20 struct { 21 u64 mispred:1; 22 u64 predicted:1; 23 u64 in_tx:1; 24 u64 abort:1; 25 u64 cycles:16; 26 u64 type:4; 27 u64 new_type:4; 28 u64 priv:3; 29 u64 reserved:33; 30 }; 31 }; 32 }; 33 34 struct branch_info { 35 struct addr_map_symbol from; 36 struct addr_map_symbol to; 37 struct branch_flags flags; 38 char *srcline_from; 39 char *srcline_to; 40 }; 41 42 struct branch_entry { 43 u64 from; 44 u64 to; 45 struct branch_flags flags; 46 }; 47 48 struct branch_stack { 49 u64 nr; 50 u64 hw_idx; 51 struct branch_entry entries[]; 52 }; 53 54 /* 55 * The hw_idx is only available when PERF_SAMPLE_BRANCH_HW_INDEX is applied. 56 * Otherwise, the output format of a sample with branch stack is 57 * struct branch_stack { 58 * u64 nr; 59 * struct branch_entry entries[0]; 60 * } 61 * Check whether the hw_idx is available, 62 * and return the corresponding pointer of entries[0]. 63 */ 64 static inline struct branch_entry *perf_sample__branch_entries(struct perf_sample *sample) 65 { 66 u64 *entry = (u64 *)sample->branch_stack; 67 68 entry++; 69 if (sample->no_hw_idx) 70 return (struct branch_entry *)entry; 71 return (struct branch_entry *)(++entry); 72 } 73 74 struct branch_type_stat { 75 bool branch_to; 76 u64 counts[PERF_BR_MAX]; 77 u64 new_counts[PERF_BR_NEW_MAX]; 78 u64 cond_fwd; 79 u64 cond_bwd; 80 u64 cross_4k; 81 u64 cross_2m; 82 }; 83 84 void branch_type_count(struct branch_type_stat *st, struct branch_flags *flags, 85 u64 from, u64 to); 86 87 const char *branch_type_name(int type); 88 const char *branch_new_type_name(int new_type); 89 const char *get_branch_type(struct branch_entry *e); 90 void branch_type_stat_display(FILE *fp, struct branch_type_stat *st); 91 int branch_type_str(struct branch_type_stat *st, char *bf, int bfsize); 92 93 #endif /* _PERF_BRANCH_H */ 94