linux-kernel - [PATCH] interconnect: Aggregate bandwidth votes for unused nodes in sync

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Date:   Sat, 19 Jun 2021 22:38:29 +0530
From:   Odelu Kukatla <okukatla@...eaurora.org>
To:     georgi.djakov@...aro.org, bjorn.andersson@...aro.org,
        evgreen@...gle.com, Georgi Djakov <djakov@...nel.org>,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     sboyd@...nel.org, mdtipton@...eaurora.org, sibis@...eaurora.org,
        saravanak@...gle.com, okukatla@...eaurora.org,
        seansw@....qualcomm.com, elder@...aro.org,
        linux-arm-msm@...r.kernel.org, linux-arm-msm-owner@...r.kernel.org
Subject: [PATCH] interconnect: Aggregate bandwidth votes for unused nodes in sync_state()

When removing the initial bandwidth votes in sync_state(), make sure
to call the aggregate() function for nodes which don't have any
clients yet. aggregate_requests() does not invoke aggregate()
for unused nodes.

Signed-off-by: Odelu Kukatla <okukatla@...eaurora.org>
---
 drivers/interconnect/core.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c
index 8a1e70e..1d9a00a 100644
--- a/drivers/interconnect/core.c
+++ b/drivers/interconnect/core.c
@@ -1106,7 +1106,16 @@ void icc_sync_state(struct device *dev)
 		dev_dbg(p->dev, "interconnect provider is in synced state\n");
 		list_for_each_entry(n, &p->nodes, node_list) {
 			if (n->init_avg || n->init_peak) {
-				aggregate_requests(n);
+				if (hlist_empty(&n->req_list)) {
+					if (p->pre_aggregate)
+						p->pre_aggregate(n);
+
+					p->aggregate(n, 0, 0, 0, &n->avg_bw,
+						&n->peak_bw);
+				} else {
+					aggregate_requests(n);
+				}
+
 				p->set(n, n);
 			}
 		}
-- 
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