perf/core: Remove 'struct sched_in_data'

We can deduce the ctx and cpuctx from the event, no need to pass them
along. Remove the structure and pass in can_add_hw directly.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

kernel/events/core.c

@@ -3423,17 +3423,11 @@ static int visit_groups_merge(struct perf_event_groups *groups, int cpu,
 	return 0;
 }
 
-struct sched_in_data {
-	struct perf_event_context *ctx;
-	struct perf_cpu_context *cpuctx;
-	int can_add_hw;
-};
-
 static int merge_sched_in(struct perf_event *event, void *data)
 {
-	struct sched_in_data *sid = data;
-
-	WARN_ON_ONCE(event->ctx != sid->ctx);
+	struct perf_event_context *ctx = event->ctx;
+	struct perf_cpu_context *cpuctx = __get_cpu_context(ctx);
+	int *can_add_hw = data;
 
 	if (event->state <= PERF_EVENT_STATE_OFF)
 		return 0;
@@ -3441,8 +3435,8 @@ static int merge_sched_in(struct perf_event *event, void *data)
 	if (!event_filter_match(event))
 		return 0;
 
-	if (group_can_go_on(event, sid->cpuctx, sid->can_add_hw)) {
-		if (!group_sched_in(event, sid->cpuctx, sid->ctx))
+	if (group_can_go_on(event, cpuctx, *can_add_hw)) {
+		if (!group_sched_in(event, cpuctx, ctx))
 			list_add_tail(&event->active_list, get_event_list(event));
 	}
 
@@ -3450,8 +3444,8 @@ static int merge_sched_in(struct perf_event *event, void *data)
 		if (event->attr.pinned)
 			perf_event_set_state(event, PERF_EVENT_STATE_ERROR);
 
-		sid->can_add_hw = 0;
-		sid->ctx->rotate_necessary = 1;
+		*can_add_hw = 0;
+		ctx->rotate_necessary = 1;
 	}
 
 	return 0;
@@ -3461,30 +3455,22 @@ static void
 ctx_pinned_sched_in(struct perf_event_context *ctx,
 		    struct perf_cpu_context *cpuctx)
 {
-	struct sched_in_data sid = {
-		.ctx = ctx,
-		.cpuctx = cpuctx,
-		.can_add_hw = 1,
-	};
+	int can_add_hw = 1;
 
 	visit_groups_merge(&ctx->pinned_groups,
 			   smp_processor_id(),
-			   merge_sched_in, &sid);
+			   merge_sched_in, &can_add_hw);
 }
 
 static void
 ctx_flexible_sched_in(struct perf_event_context *ctx,
 		      struct perf_cpu_context *cpuctx)
 {
-	struct sched_in_data sid = {
-		.ctx = ctx,
-		.cpuctx = cpuctx,
-		.can_add_hw = 1,
-	};
+	int can_add_hw = 1;
 
 	visit_groups_merge(&ctx->flexible_groups,
 			   smp_processor_id(),
-			   merge_sched_in, &sid);
+			   merge_sched_in, &can_add_hw);
 }
 
 static void