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 not_taken:1; 29 u64 reserved:30; 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 u64 branch_stack_cntr; 39 char *srcline_from; 40 char *srcline_to; 41 }; 42 43 struct branch_entry { 44 u64 from; 45 u64 to; 46 struct branch_flags flags; 47 }; 48 49 struct branch_stack { 50 u64 nr; 51 u64 hw_idx; 52 struct branch_entry entries[]; 53 }; 54 55 /* 56 * The hw_idx is only available when PERF_SAMPLE_BRANCH_HW_INDEX is applied. 57 * Otherwise, the output format of a sample with branch stack is 58 * struct branch_stack { 59 * u64 nr; 60 * struct branch_entry entries[0]; 61 * } 62 * Check whether the hw_idx is available, 63 * and return the corresponding pointer of entries[0]. 64 */ 65 static inline struct branch_entry *perf_sample__branch_entries(struct perf_sample *sample) 66 { 67 u64 *entry = (u64 *)sample->branch_stack; 68 69 entry++; 70 if (sample->no_hw_idx) 71 return (struct branch_entry *)entry; 72 return (struct branch_entry *)(++entry); 73 } 74 75 struct branch_type_stat { 76 bool branch_to; 77 u64 counts[PERF_BR_MAX]; 78 u64 new_counts[PERF_BR_NEW_MAX]; 79 u64 cond_fwd; 80 u64 cond_bwd; 81 u64 cross_4k; 82 u64 cross_2m; 83 }; 84 85 void branch_type_count(struct branch_type_stat *st, struct branch_flags *flags, 86 u64 from, u64 to); 87 88 const char *branch_type_name(int type); 89 const char *branch_new_type_name(int new_type); 90 const char *get_branch_type(struct branch_entry *e); 91 void branch_type_stat_display(FILE *fp, const struct branch_type_stat *st); 92 int branch_type_str(const struct branch_type_stat *st, char *bf, int bfsize); 93 94 const char *branch_spec_desc(int spec); 95 96 #endif /* _PERF_BRANCH_H */ 97