linux-kernel - [PATCH AUTOSEL 5.8 12/29] interconnect: Show bandwidth for disabled paths as zero in debugfs

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Date:   Mon, 14 Sep 2020 09:03:41 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Matthias Kaehlcke <mka@...omium.org>,
        Evan Green <evgreen@...omium.org>,
        Georgi Djakov <georgi.djakov@...aro.org>,
        Sasha Levin <sashal@...nel.org>, linux-pm@...r.kernel.org
Subject: [PATCH AUTOSEL 5.8 12/29] interconnect: Show bandwidth for disabled paths as zero in debugfs

From: Matthias Kaehlcke <mka@...omium.org>

[ Upstream commit b1910c6b9983817160e04d4e87b2dc1413c5361a ]

For disabled paths the 'interconnect_summary' in debugfs currently shows
the orginally requested bandwidths. This is confusing, since the bandwidth
requests aren't active. Instead show the bandwidths for disabled
paths/requests as zero.

Signed-off-by: Matthias Kaehlcke <mka@...omium.org>
Reviewed-by: Evan Green <evgreen@...omium.org>
Link: https://lore.kernel.org/r/20200729104933.1.If8e80e4c0c7ddf99056f6e726e59505ed4e127f3@changeid
Signed-off-by: Georgi Djakov <georgi.djakov@...aro.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/interconnect/core.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c
index 9e1ab701785c7..0162a9af93237 100644
--- a/drivers/interconnect/core.c
+++ b/drivers/interconnect/core.c
@@ -55,12 +55,18 @@ static int icc_summary_show(struct seq_file *s, void *data)
 
 			icc_summary_show_one(s, n);
 			hlist_for_each_entry(r, &n->req_list, req_node) {
+				u32 avg_bw = 0, peak_bw = 0;
+
 				if (!r->dev)
 					continue;
 
+				if (r->enabled) {
+					avg_bw = r->avg_bw;
+					peak_bw = r->peak_bw;
+				}
+
 				seq_printf(s, "  %-27s %12u %12u %12u\n",
-					   dev_name(r->dev), r->tag, r->avg_bw,
-					   r->peak_bw);
+					   dev_name(r->dev), r->tag, avg_bw, peak_bw);
 			}
 		}
 	}
-- 
2.25.1