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perf metric: Add 'struct expr_id_data' to keep expr value

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Add 'struct expr_id_data' to keep an expr value instead of just a simple
double pointer, so we can store more data for ID in the following
changes.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Clarke <pc@us.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20200712132634.138901-3-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2020-07-12 15:26:18 +02:00 committed by Arnaldo Carvalho de Melo
parent 2c46f54249
commit 070b3b5ad7
4 changed files with 18 additions and 13 deletions
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3
tools/perf/tests/expr.c
View File

@ -18,8 +18,9 @@ static int test(struct expr_parse_ctx *ctx, const char *e, double val2)
int test__expr(struct test *t __maybe_unused, int subtest __maybe_unused)
{
struct expr_id_data *val_ptr;
const char *p;
double val, *val_ptr;
double val;
int ret;
struct expr_parse_ctx ctx;

22
tools/perf/util/expr.c
View File

@ -33,32 +33,32 @@ static bool key_equal(const void *key1, const void *key2,
}
/* Caller must make sure id is allocated */
int expr__add_id_val(struct expr_parse_ctx *ctx, const char *name, double val)
int expr__add_id_val(struct expr_parse_ctx *ctx, const char *id, double val)
{
double *val_ptr = NULL, *old_val = NULL;
struct expr_id_data *data_ptr = NULL, *old_data = NULL;
char *old_key = NULL;
int ret;
if (val != 0.0) {
val_ptr = malloc(sizeof(double));
if (!val_ptr)
data_ptr = malloc(sizeof(*data_ptr));
if (!data_ptr)
return -ENOMEM;
*val_ptr = val;
data_ptr->val = val;
}
ret = hashmap__set(&ctx->ids, name, val_ptr,
(const void **)&old_key, (void **)&old_val);
ret = hashmap__set(&ctx->ids, id, data_ptr,
(const void **)&old_key, (void **)&old_data);
free(old_key);
free(old_val);
free(old_data);
return ret;
}
int expr__get_id(struct expr_parse_ctx *ctx, const char *id, double *val_ptr)
{
double *data;
struct expr_id_data *data;
if (!hashmap__find(&ctx->ids, id, (void **)&data))
return -1;
*val_ptr = (data == NULL) ? 0.0 : *data;
*val_ptr = (data == NULL) ? 0.0 : data->val;
return 0;
}
@ -119,7 +119,7 @@ int expr__parse(double *final_val, struct expr_parse_ctx *ctx,
int expr__find_other(const char *expr, const char *one,
struct expr_parse_ctx *ctx, int runtime)
{
double *old_val = NULL;
struct expr_id_data *old_val = NULL;
char *old_key = NULL;
int ret = __expr__parse(NULL, ctx, expr, EXPR_OTHER, runtime);

4
tools/perf/util/expr.h
View File

@ -15,6 +15,10 @@ struct expr_parse_ctx {
struct hashmap ids;
};
struct expr_id_data {
double val;
};
struct expr_scanner_ctx {
int start_token;
int runtime;

2
tools/perf/util/metricgroup.c
View File

@ -138,7 +138,7 @@ static struct evsel *find_evsel_group(struct evlist *perf_evlist,
unsigned long *evlist_used)
{
struct evsel *ev, *current_leader = NULL;
double *val_ptr;
struct expr_id_data *val_ptr;
int i = 0, matched_events = 0, events_to_match;
const int idnum = (int)hashmap__size(&pctx->ids);