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20d6f55528
Reusing the existing --total-cycles option to display the branch
counters. Add a new PERF_HPP_REPORT__BLOCK_BRANCH_COUNTER to display
the logged branch counter events. They are shown right after all the
cycle-related annotations.
Extend the 'struct block_info' to store and pass the branch counter
related information.
The annotation_br_cntr_entry() is to print the histogram of each branch
counter event. If the number of logged events is less than 4, the exact
number of the abbr name is printed. Otherwise, using '+' to stands for
more than 3 events.
Assume the number of logged events is less than 4.
The annotation_br_cntr_abbr_list() prints the branch counter's
abbreviation list. Press 'B' to display the list in the TUI mode.
$ perf record -e "{branch-instructions:ppp,branch-misses}:S" -j any,counter
$ perf report --total-cycles --stdio
# To display the perf.data header info, please use --header/--header-only options.
#
#
# Total Lost Samples: 0
#
# Samples: 1M of events 'anon group { branch-instructions:ppp, branch-misses }'
# Event count (approx.): 1610046
#
# Branch counter abbr list:
# branch-instructions:ppp = A
# branch-misses = B
# '-' No event occurs
# '+' Event occurrences may be lost due to branch counter saturated
#
# Sampled Cycles% Sampled Cycles Avg Cycles% Avg Cycles Branch Counter [Program Block Range]
# ............... .............. ........... .......... .............. ..................
#
57.55% 2.5M 0.00% 3 |A |- | ...
25.27% 1.1M 0.00% 2 |AA |- | ...
15.61% 667.2K 0.00% 1 |A |- | ...
0.16% 6.9K 0.81% 575 |A |- | ...
0.16% 6.8K 1.38% 977 |AA |- | ...
0.16% 6.8K 0.04% 28 |AA |B | ...
0.15% 6.6K 1.33% 946 |A |- | ...
0.11% 4.5K 0.06% 46 |AAA+|- | ...
0.10% 4.4K 0.88% 624 |A |- | ...
0.09% 3.7K 0.74% 524 |AAA+|B | ...
With -v applied,
# Sampled Cycles% Sampled Cycles Avg Cycles% Avg Cycles Branch Counter [Program Block Range]
# ............... .............. ........... .......... .............. ..................
#
57.55% 2.5M 0.00% 3 A=1 ,B=- ...
25.27% 1.1M 0.00% 2 A=2 ,B=- ...
15.61% 667.2K 0.00% 1 A=1 ,B=- ...
0.16% 6.9K 0.81% 575 A=1 ,B=- ...
0.16% 6.8K 1.38% 977 A=2 ,B=- ...
0.16% 6.8K 0.04% 28 A=2 ,B=1 ...
0.15% 6.6K 1.33% 946 A=1 ,B=- ...
0.11% 4.5K 0.06% 46 A=3+,B=- ...
0.10% 4.4K 0.88% 624 A=1 ,B=- ...
0.09% 3.7K 0.74% 524 A=3+,B=1 ...
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lore.kernel.org/r/20240813160208.2493643-7-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
77 lines
1.8 KiB
C
77 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_BLOCK_H
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#define __PERF_BLOCK_H
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#include <linux/types.h>
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#include "hist.h"
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#include "symbol.h"
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#include "sort.h"
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#include "ui/ui.h"
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struct block_info {
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struct symbol *sym;
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u64 start;
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u64 end;
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u64 cycles;
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u64 cycles_aggr;
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s64 cycles_spark[NUM_SPARKS];
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u64 total_cycles;
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int num;
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int num_aggr;
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int br_cntr_nr;
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u64 *br_cntr;
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struct evsel *evsel;
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};
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struct block_fmt {
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struct perf_hpp_fmt fmt;
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int idx;
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int width;
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const char *header;
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u64 total_cycles;
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u64 block_cycles;
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};
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enum {
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PERF_HPP_REPORT__BLOCK_TOTAL_CYCLES_PCT,
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PERF_HPP_REPORT__BLOCK_LBR_CYCLES,
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PERF_HPP_REPORT__BLOCK_CYCLES_PCT,
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PERF_HPP_REPORT__BLOCK_AVG_CYCLES,
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PERF_HPP_REPORT__BLOCK_RANGE,
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PERF_HPP_REPORT__BLOCK_DSO,
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PERF_HPP_REPORT__BLOCK_BRANCH_COUNTER,
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PERF_HPP_REPORT__BLOCK_MAX_INDEX
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};
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struct block_report {
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struct block_hist hist;
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u64 cycles;
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struct block_fmt fmts[PERF_HPP_REPORT__BLOCK_MAX_INDEX];
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int nr_fmts;
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};
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void block_info__delete(struct block_info *bi);
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int64_t __block_info__cmp(struct hist_entry *left, struct hist_entry *right);
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int64_t block_info__cmp(struct perf_hpp_fmt *fmt __maybe_unused,
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struct hist_entry *left, struct hist_entry *right);
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int block_info__process_sym(struct hist_entry *he, struct block_hist *bh,
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u64 *block_cycles_aggr, u64 total_cycles,
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unsigned int br_cntr_nr);
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struct block_report *block_info__create_report(struct evlist *evlist,
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u64 total_cycles,
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int *block_hpps, int nr_hpps,
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int *nr_reps);
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void block_info__free_report(struct block_report *reps, int nr_reps);
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int report__browse_block_hists(struct block_hist *bh, float min_percent,
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struct evsel *evsel, struct perf_env *env);
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float block_info__total_cycles_percent(struct hist_entry *he);
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#endif /* __PERF_BLOCK_H */
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