perf/core: Remove perf_event::group_entry

Now that all the grouping is done with RB trees, we no longer need
group_entry and can replace the whole thing with sibling_list.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Carrillo-Cisneros <davidcc@google.com>
Cc: Dmitri Prokhorov <Dmitry.Prohorov@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Valery Cherepennikov <valery.cherepennikov@intel.com>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

drivers/perf/arm_dsu_pmu.c

@@ -536,7 +536,7 @@ static bool dsu_pmu_validate_group(struct perf_event *event)
 	memset(fake_hw.used_mask, 0, sizeof(fake_hw.used_mask));
 	if (!dsu_pmu_validate_event(event->pmu, &fake_hw, leader))
 		return false;
-	list_for_each_entry(sibling, &leader->sibling_list, group_entry) {
+	list_for_each_entry(sibling, &leader->sibling_list, sibling_list) {
 		if (!dsu_pmu_validate_event(event->pmu, &fake_hw, sibling))
 			return false;
 	}

drivers/perf/arm_pmu.c

@@ -311,7 +311,7 @@ validate_group(struct perf_event *event)
 	if (!validate_event(event->pmu, &fake_pmu, leader))
 		return -EINVAL;
 
-	list_for_each_entry(sibling, &leader->sibling_list, group_entry) {
+	list_for_each_entry(sibling, &leader->sibling_list, sibling_list) {
 		if (!validate_event(event->pmu, &fake_pmu, sibling))
 			return -EINVAL;
 	}

drivers/perf/hisilicon/hisi_uncore_pmu.c

@@ -82,8 +82,7 @@ static bool hisi_validate_event_group(struct perf_event *event)
 			counters++;
 	}
 
-	list_for_each_entry(sibling, &event->group_leader->sibling_list,
-			    group_entry) {
+	list_for_each_entry(sibling, &event->group_leader->sibling_list, sibling_list) {
 		if (is_software_event(sibling))
 			continue;
 		if (sibling->pmu != event->pmu)

drivers/perf/qcom_l2_pmu.c

@@ -535,7 +535,7 @@ static int l2_cache_event_init(struct perf_event *event)
 	}
 
 	list_for_each_entry(sibling, &event->group_leader->sibling_list,
-			    group_entry)
+			    sibling_list)
 		if (sibling->pmu != event->pmu &&
 		    !is_software_event(sibling)) {
 			dev_dbg_ratelimited(&l2cache_pmu->pdev->dev,
@@ -572,7 +572,7 @@ static int l2_cache_event_init(struct perf_event *event)
 	}
 
 	list_for_each_entry(sibling, &event->group_leader->sibling_list,
-			    group_entry) {
+			    sibling_list) {
 		if ((sibling != event) &&
 		    !is_software_event(sibling) &&
 		    (L2_EVT_GROUP(sibling->attr.config) ==

drivers/perf/qcom_l3_pmu.c

@@ -468,7 +468,7 @@ static bool qcom_l3_cache__validate_event_group(struct perf_event *event)
 	counters = event_num_counters(event);
 	counters += event_num_counters(leader);
 
-	list_for_each_entry(sibling, &leader->sibling_list, group_entry) {
+	list_for_each_entry(sibling, &leader->sibling_list, sibling_list) {
 		if (is_software_event(sibling))
 			continue;
 		if (sibling->pmu != event->pmu)

drivers/perf/xgene_pmu.c

@@ -950,7 +950,7 @@ static int xgene_perf_event_init(struct perf_event *event)
 		return -EINVAL;
 
 	list_for_each_entry(sibling, &event->group_leader->sibling_list,
-			group_entry)
+			sibling_list)
 		if (sibling->pmu != event->pmu &&
 				!is_software_event(sibling))
 			return -EINVAL;