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20ed9fa496
Commit93315e46b0("perf/core: Add speculation info to branch entries") added a new field in between type and new_type. Perf has its own copy of this struct so update it to match the kernel side. This doesn't currently cause any issues because new_type is only used by the Arm BRBE driver which isn't merged yet. Committer notes: Is this really an ABI? How are we supposed to deal with old perf.data files with new tools and vice versa? :-\ Fixes:93315e46b0("perf/core: Add speculation info to branch entries") Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com> Signed-off-by: James Clark <james.clark@arm.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sandipan Das <sandipan.das@amd.com> Link: https://lore.kernel.org/r/20221130165158.517385-1-james.clark@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
93 lines
2.1 KiB
C
93 lines
2.1 KiB
C
#ifndef _PERF_BRANCH_H
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#define _PERF_BRANCH_H 1
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/*
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* The linux/stddef.h isn't need here, but is needed for __always_inline used
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* in files included from uapi/linux/perf_event.h such as
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* /usr/include/linux/swab.h and /usr/include/linux/byteorder/little_endian.h,
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* detected in at least musl libc, used in Alpine Linux. -acme
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*/
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#include <stdio.h>
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#include <linux/perf_event.h>
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#include <linux/types.h>
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#include "util/map_symbol.h"
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#include "util/sample.h"
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struct branch_flags {
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union {
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u64 value;
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struct {
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u64 mispred:1;
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u64 predicted:1;
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u64 in_tx:1;
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u64 abort:1;
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u64 cycles:16;
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u64 type:4;
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u64 spec:2;
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u64 new_type:4;
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u64 priv:3;
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u64 reserved:31;
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};
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};
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};
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struct branch_info {
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struct addr_map_symbol from;
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struct addr_map_symbol to;
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struct branch_flags flags;
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char *srcline_from;
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char *srcline_to;
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};
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struct branch_entry {
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u64 from;
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u64 to;
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struct branch_flags flags;
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};
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struct branch_stack {
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u64 nr;
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u64 hw_idx;
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struct branch_entry entries[];
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};
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/*
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* The hw_idx is only available when PERF_SAMPLE_BRANCH_HW_INDEX is applied.
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* Otherwise, the output format of a sample with branch stack is
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* struct branch_stack {
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* u64 nr;
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* struct branch_entry entries[0];
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* }
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* Check whether the hw_idx is available,
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* and return the corresponding pointer of entries[0].
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*/
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static inline struct branch_entry *perf_sample__branch_entries(struct perf_sample *sample)
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{
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u64 *entry = (u64 *)sample->branch_stack;
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entry++;
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if (sample->no_hw_idx)
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return (struct branch_entry *)entry;
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return (struct branch_entry *)(++entry);
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}
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struct branch_type_stat {
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bool branch_to;
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u64 counts[PERF_BR_MAX];
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u64 new_counts[PERF_BR_NEW_MAX];
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u64 cond_fwd;
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u64 cond_bwd;
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u64 cross_4k;
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u64 cross_2m;
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};
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void branch_type_count(struct branch_type_stat *st, struct branch_flags *flags,
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u64 from, u64 to);
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const char *branch_type_name(int type);
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const char *branch_new_type_name(int new_type);
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const char *get_branch_type(struct branch_entry *e);
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void branch_type_stat_display(FILE *fp, struct branch_type_stat *st);
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int branch_type_str(struct branch_type_stat *st, char *bf, int bfsize);
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#endif /* _PERF_BRANCH_H */
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