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Code Issues Releases Wiki Activity

perf annotate: Move max_coverage from 'struct annotation' to 'struct annotated_branch'

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The max_coverage field is only used when branch stack info is available
so it'd be natural to move to 'struct annotated_branch'.

Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20231103191907.54531-4-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2023-11-03 12:19:05 -07:00 committed by Arnaldo Carvalho de Melo
parent b7f87e3259
commit 2b215ec71b
4 changed files with 15 additions and 5 deletions
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7
tools/perf/builtin-annotate.c
View file

@ -94,6 +94,7 @@ static void process_basic_block(struct addr_map_symbol *start,
struct annotation *notes = sym ? symbol__annotation(sym) : NULL;
struct block_range_iter iter;
struct block_range *entry;
struct annotated_branch *branch;
/*
* Sanity; NULL isn't executable and the CPU cannot execute backwards
@ -105,6 +106,8 @@ static void process_basic_block(struct addr_map_symbol *start,
if (!block_range_iter__valid(&iter))
return;
branch = annotation__get_branch(notes);
/*
* First block in range is a branch target.
*/
@ -118,8 +121,8 @@ static void process_basic_block(struct addr_map_symbol *start,
entry->coverage++;
entry->sym = sym;
if (notes)
notes->max_coverage = max(notes->max_coverage, entry->coverage);
if (branch)
branch->max_coverage = max(branch->max_coverage, entry->coverage);
} while (block_range_iter__next(&iter));

2
tools/perf/util/annotate.c
View file

@ -946,7 +946,7 @@ static int __symbol__inc_addr_samples(struct map_symbol *ms,
return 0;
}
static struct annotated_branch *annotation__get_branch(struct annotation *notes)
struct annotated_branch *annotation__get_branch(struct annotation *notes)
{
if (notes == NULL)
return NULL;

4
tools/perf/util/annotate.h
View file

@ -280,10 +280,10 @@ struct annotated_branch {
unsigned int total_insn;
unsigned int cover_insn;
struct cyc_hist *cycles_hist;
u64 max_coverage;
};
struct LOCKABLE annotation {
u64 max_coverage;
u64 start;
struct annotation_options *options;
struct annotation_line **offsets;
@ -355,6 +355,8 @@ static inline struct annotation *symbol__annotation(struct symbol *sym)
int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, struct perf_sample *sample,
struct evsel *evsel);
struct annotated_branch *annotation__get_branch(struct annotation *notes);
int addr_map_symbol__account_cycles(struct addr_map_symbol *ams,
struct addr_map_symbol *start,
unsigned cycles);

7
tools/perf/util/block-range.c
View file

@ -311,6 +311,7 @@ struct block_range_iter block_range__create(u64 start, u64 end)
double block_range__coverage(struct block_range *br)
{
struct symbol *sym;
struct annotated_branch *branch;
if (!br) {
if (block_ranges.blocks)
@ -323,5 +324,9 @@ double block_range__coverage(struct block_range *br)
if (!sym)
return -1;
return (double)br->coverage / symbol__annotation(sym)->max_coverage;
branch = symbol__annotation(sym)->branch;
if (!branch)
return -1;
return (double)br->coverage / branch->max_coverage;
}