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- #ifndef _PERF_BRANCH_H
- #define _PERF_BRANCH_H 1
- /*
- * The linux/stddef.h isn't need here, but is needed for __always_inline used
- * in files included from uapi/linux/perf_event.h such as
- * /usr/include/linux/swab.h and /usr/include/linux/byteorder/little_endian.h,
- * detected in at least musl libc, used in Alpine Linux. -acme
- */
- #include <stdio.h>
- #include <stdint.h>
- #include <linux/compiler.h>
- #include <linux/stddef.h>
- #include <linux/perf_event.h>
- #include <linux/types.h>
- #include "event.h"
- struct branch_flags {
- union {
- u64 value;
- struct {
- u64 mispred:1;
- u64 predicted:1;
- u64 in_tx:1;
- u64 abort:1;
- u64 cycles:16;
- u64 type:4;
- u64 reserved:40;
- };
- };
- };
- struct branch_info {
- struct addr_map_symbol from;
- struct addr_map_symbol to;
- struct branch_flags flags;
- char *srcline_from;
- char *srcline_to;
- };
- struct branch_entry {
- u64 from;
- u64 to;
- struct branch_flags flags;
- };
- struct branch_stack {
- u64 nr;
- u64 hw_idx;
- struct branch_entry entries[];
- };
- /*
- * The hw_idx is only available when PERF_SAMPLE_BRANCH_HW_INDEX is applied.
- * Otherwise, the output format of a sample with branch stack is
- * struct branch_stack {
- * u64 nr;
- * struct branch_entry entries[0];
- * }
- * Check whether the hw_idx is available,
- * and return the corresponding pointer of entries[0].
- */
- static inline struct branch_entry *perf_sample__branch_entries(struct perf_sample *sample)
- {
- u64 *entry = (u64 *)sample->branch_stack;
- entry++;
- if (sample->no_hw_idx)
- return (struct branch_entry *)entry;
- return (struct branch_entry *)(++entry);
- }
- struct branch_type_stat {
- bool branch_to;
- u64 counts[PERF_BR_MAX];
- u64 cond_fwd;
- u64 cond_bwd;
- u64 cross_4k;
- u64 cross_2m;
- };
- void branch_type_count(struct branch_type_stat *st, struct branch_flags *flags,
- u64 from, u64 to);
- const char *branch_type_name(int type);
- void branch_type_stat_display(FILE *fp, struct branch_type_stat *st);
- int branch_type_str(struct branch_type_stat *st, char *bf, int bfsize);
- #endif /* _PERF_BRANCH_H */
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