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 <linux/perf_event.h> 11 #include <linux/types.h> 12 #include "util/map_symbol.h" 13 #include "util/sample.h" 14 15 struct branch_flags { 16 union { 17 u64 value; 18 struct { 19 u64 mispred:1; 20 u64 predicted:1; 21 u64 in_tx:1; 22 u64 abort:1; 23 u64 cycles:16; 24 u64 type:4; 25 u64 spec:2; 26 u64 new_type:4; 27 u64 priv:3; 28 u64 reserved:31; 29 }; 30 }; 31 }; 32 33 struct branch_info { 34 struct addr_map_symbol from; 35 struct addr_map_symbol to; 36 struct branch_flags flags; 37 char *srcline_from; 38 char *srcline_to; 39 }; 40 41 struct branch_entry { 42 u64 from; 43 u64 to; 44 struct branch_flags flags; 45 }; 46 47 struct branch_stack { 48 u64 nr; 49 u64 hw_idx; 50 struct branch_entry entries[]; 51 }; 52 53 /* 54 * The hw_idx is only available when PERF_SAMPLE_BRANCH_HW_INDEX is applied. 55 * Otherwise, the output format of a sample with branch stack is 56 * struct branch_stack { 57 * u64 nr; 58 * struct branch_entry entries[0]; 59 * } 60 * Check whether the hw_idx is available, 61 * and return the corresponding pointer of entries[0]. 62 */ 63 static inline struct branch_entry *perf_sample__branch_entries(struct perf_sample *sample) 64 { 65 u64 *entry = (u64 *)sample->branch_stack; 66 67 entry++; 68 if (sample->no_hw_idx) 69 return (struct branch_entry *)entry; 70 return (struct branch_entry *)(++entry); 71 } 72 73 struct branch_type_stat { 74 bool branch_to; 75 u64 counts[PERF_BR_MAX]; 76 u64 new_counts[PERF_BR_NEW_MAX]; 77 u64 cond_fwd; 78 u64 cond_bwd; 79 u64 cross_4k; 80 u64 cross_2m; 81 }; 82 83 void branch_type_count(struct branch_type_stat *st, struct branch_flags *flags, 84 u64 from, u64 to); 85 86 const char *branch_type_name(int type); 87 const char *branch_new_type_name(int new_type); 88 const char *get_branch_type(struct branch_entry *e); 89 void branch_type_stat_display(FILE *fp, const struct branch_type_stat *st); 90 int branch_type_str(const struct branch_type_stat *st, char *bf, int bfsize); 91 92 const char *branch_spec_desc(int spec); 93 94 #endif /* _PERF_BRANCH_H */ 95