perf parse: Refactor 'struct perf_evsel_config_term'

The struct perf_evsel_config_term::val is a union which contains fields
'callgraph', 'drv_cfg' and 'branch' as string pointers.  This leads to
the complex code logic for handling every type's string separately, and
it's hard to release string as a general way.

This patch refactors the structure to add a common field 'str' in the
'val' union as string pointer and remove the other three fields
'callgraph', 'drv_cfg' and 'branch'.  Without passing field name, the
patch simplifies the string handling with macro ADD_CONFIG_TERM_STR()
for string pointer assignment.

This patch fixes multiple warnings of line over 80 characters detected
by checkpatch tool.

Signed-off-by: Leo Yan <leo.yan@linaro.org>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lore.kernel.org/lkml/20200117055251.24058-1-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 40 insertions, 22 deletions

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index ed7c008b9c8b..f59f3c8da473 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -1219,8 +1219,7 @@ static int config_attr(struct perf_event_attr *attr,
 static int get_config_terms(struct list_head *head_config,
 			    struct list_head *head_terms __maybe_unused)
 {
-#define ADD_CONFIG_TERM(__type, __name, __val)			\
-do {								\
+#define ADD_CONFIG_TERM(__type)					\
 	struct perf_evsel_config_term *__t;			\
 								\
 	__t = zalloc(sizeof(*__t));				\
@@ -1229,9 +1228,19 @@ do {								\
 								\
 	INIT_LIST_HEAD(&__t->list);				\
 	__t->type       = PERF_EVSEL__CONFIG_TERM_ ## __type;	\
-	__t->val.__name = __val;				\
 	__t->weak	= term->weak;				\
-	list_add_tail(&__t->list, head_terms);			\
+	list_add_tail(&__t->list, head_terms)
+
+#define ADD_CONFIG_TERM_VAL(__type, __name, __val)		\
+do {								\
+	ADD_CONFIG_TERM(__type);				\
+	__t->val.__name = __val;				\
+} while (0)
+
+#define ADD_CONFIG_TERM_STR(__type, __val)			\
+do {								\
+	ADD_CONFIG_TERM(__type);				\
+	__t->val.str = __val;					\
 } while (0)
 
 	struct parse_events_term *term;
@@ -1239,53 +1248,62 @@ do {								\
 	list_for_each_entry(term, head_config, list) {
 		switch (term->type_term) {
 		case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
-			ADD_CONFIG_TERM(PERIOD, period, term->val.num);
+			ADD_CONFIG_TERM_VAL(PERIOD, period, term->val.num);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
-			ADD_CONFIG_TERM(FREQ, freq, term->val.num);
+			ADD_CONFIG_TERM_VAL(FREQ, freq, term->val.num);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_TIME:
-			ADD_CONFIG_TERM(TIME, time, term->val.num);
+			ADD_CONFIG_TERM_VAL(TIME, time, term->val.num);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
-			ADD_CONFIG_TERM(CALLGRAPH, callgraph, term->val.str);
+			ADD_CONFIG_TERM_STR(CALLGRAPH, term->val.str);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
-			ADD_CONFIG_TERM(BRANCH, branch, term->val.str);
+			ADD_CONFIG_TERM_STR(BRANCH, term->val.str);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
-			ADD_CONFIG_TERM(STACK_USER, stack_user, term->val.num);
+			ADD_CONFIG_TERM_VAL(STACK_USER, stack_user,
+					    term->val.num);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_INHERIT:
-			ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 1 : 0);
+			ADD_CONFIG_TERM_VAL(INHERIT, inherit,
+					    term->val.num ? 1 : 0);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
-			ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 0 : 1);
+			ADD_CONFIG_TERM_VAL(INHERIT, inherit,
+					    term->val.num ? 0 : 1);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
-			ADD_CONFIG_TERM(MAX_STACK, max_stack, term->val.num);
+			ADD_CONFIG_TERM_VAL(MAX_STACK, max_stack,
+					    term->val.num);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
-			ADD_CONFIG_TERM(MAX_EVENTS, max_events, term->val.num);
+			ADD_CONFIG_TERM_VAL(MAX_EVENTS, max_events,
+					    term->val.num);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
-			ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 1 : 0);
+			ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite,
+					    term->val.num ? 1 : 0);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
-			ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 0 : 1);
+			ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite,
+					    term->val.num ? 0 : 1);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
-			ADD_CONFIG_TERM(DRV_CFG, drv_cfg, term->val.str);
+			ADD_CONFIG_TERM_STR(DRV_CFG, term->val.str);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_PERCORE:
-			ADD_CONFIG_TERM(PERCORE, percore,
-					term->val.num ? true : false);
+			ADD_CONFIG_TERM_VAL(PERCORE, percore,
+					    term->val.num ? true : false);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
-			ADD_CONFIG_TERM(AUX_OUTPUT, aux_output, term->val.num ? 1 : 0);
+			ADD_CONFIG_TERM_VAL(AUX_OUTPUT, aux_output,
+					    term->val.num ? 1 : 0);
 			break;
 		case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:
-			ADD_CONFIG_TERM(AUX_SAMPLE_SIZE, aux_sample_size, term->val.num);
+			ADD_CONFIG_TERM_VAL(AUX_SAMPLE_SIZE, aux_sample_size,
+					    term->val.num);
 			break;
 		default:
 			break;
@@ -1322,7 +1340,7 @@ static int get_config_chgs(struct perf_pmu *pmu, struct list_head *head_config,
 	}
 
 	if (bits)
-		ADD_CONFIG_TERM(CFG_CHG, cfg_chg, bits);
+		ADD_CONFIG_TERM_VAL(CFG_CHG, cfg_chg, bits);
 
 #undef ADD_CONFIG_TERM
 	return 0;