perf expr: Move the scanner_ctx into the parse_ctx

We currently maintain the two independently and copy from one to the
other. This is a burden when additional scanner context values are
necessary, so combine them.
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20220831174926.579643-3-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/tests/expr.c

@@ -133,7 +133,7 @@ static int test__expr(struct test_suite *t __maybe_unused, int subtest __maybe_u
 						    (void **)&val_ptr));
 
 	expr__ctx_clear(ctx);
-	ctx->runtime = 3;
+	ctx->sctx.runtime = 3;
 	TEST_ASSERT_VAL("find ids",
 			expr__find_ids("EVENT1\\,param\\=?@ + EVENT2\\,param\\=?@",
 					NULL, ctx) == 0);

tools/perf/util/expr.c

@@ -310,7 +310,7 @@ struct expr_parse_ctx *expr__ctx_new(void)
 		free(ctx);
 		return NULL;
 	}
-	ctx->runtime = 0;
+	ctx->sctx.runtime = 0;
 
 	return ctx;
 }
@@ -344,16 +344,13 @@ static int
 __expr__parse(double *val, struct expr_parse_ctx *ctx, const char *expr,
 	      bool compute_ids)
 {
-	struct expr_scanner_ctx scanner_ctx = {
-		.runtime = ctx->runtime,
-	};
 	YY_BUFFER_STATE buffer;
 	void *scanner;
 	int ret;
 
 	pr_debug2("parsing metric: %s\n", expr);
 
-	ret = expr_lex_init_extra(&scanner_ctx, &scanner);
+	ret = expr_lex_init_extra(&ctx->sctx, &scanner);
 	if (ret)
 		return ret;
 

tools/perf/util/expr.h

@@ -10,17 +10,17 @@
 
 struct metric_ref;
 
+struct expr_scanner_ctx {
+	int runtime;
+};
+
 struct expr_parse_ctx {
 	struct hashmap	*ids;
-	int runtime;
+	struct expr_scanner_ctx sctx;
 };
 
 struct expr_id_data;
 
-struct expr_scanner_ctx {
-	int runtime;
-};
-
 struct hashmap *ids__new(void);
 void ids__free(struct hashmap *ids);
 int ids__insert(struct hashmap *ids, const char *id);

tools/perf/util/metricgroup.c

@@ -215,7 +215,7 @@ static struct metric *metric__new(const struct pmu_event *pe,
 	}
 	m->metric_expr = pe->metric_expr;
 	m->metric_unit = pe->unit;
-	m->pctx->runtime = runtime;
+	m->pctx->sctx.runtime = runtime;
 	m->has_constraint = metric_no_group || metricgroup__has_constraint(pe);
 	m->metric_refs = NULL;
 	m->evlist = NULL;
@@ -1626,7 +1626,7 @@ static int parse_groups(struct evlist *perf_evlist, const char *str,
 		}
 		expr->metric_unit = m->metric_unit;
 		expr->metric_events = metric_events;
-		expr->runtime = m->pctx->runtime;
+		expr->runtime = m->pctx->sctx.runtime;
 		list_add(&expr->nd, &me->head);
 	}
 

tools/perf/util/stat-shadow.c

@@ -911,7 +911,7 @@ static void generic_metric(struct perf_stat_config *config,
 	if (!pctx)
 		return;
 
-	pctx->runtime = runtime;
+	pctx->sctx.runtime = runtime;
 	i = prepare_metric(metric_events, metric_refs, pctx, cpu_map_idx, st);
 	if (i < 0) {
 		expr__ctx_free(pctx);