linux-kernel - [PATCH v2 5/8] thermal/debugfs: Adjust check for trips without statistics in tze_seq

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Date: Tue, 28 May 2024 16:57:13 +0200
From: "Rafael J. Wysocki" <rjw@...ysocki.net>
To: Linux PM <linux-pm@...r.kernel.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
 "Rafael J. Wysocki" <rafael@...nel.org>, Lukasz Luba <lukasz.luba@....com>,
 Daniel Lezcano <daniel.lezcano@...aro.org>
Subject:
 [PATCH v2 5/8] thermal/debugfs: Adjust check for trips without statistics in
 tze_seq_show()

From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

Initialize the trip_temp field in struct trip_stats to
THERMAL_TEMP_INVALID and adjust the check for trips without
statistics in tze_seq_show() to look at that field instead of
comparing min and max.

This will mostly be useful to simplify subsequent changes.

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---

v1 -> v2: New patch.

---
 drivers/thermal/thermal_debugfs.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Index: linux-pm/drivers/thermal/thermal_debugfs.c
===================================================================
--- linux-pm.orig/drivers/thermal/thermal_debugfs.c
+++ linux-pm/drivers/thermal/thermal_debugfs.c
@@ -563,6 +563,7 @@ static struct tz_episode *thermal_debugf
 	tze->duration = KTIME_MIN;

 	for (i = 0; i < tz->num_trips; i++) {
+		tze->trip_stats[i].trip_temp = THERMAL_TEMP_INVALID;
 		tze->trip_stats[i].min = INT_MAX;
 		tze->trip_stats[i].max = INT_MIN;
 	}
@@ -818,7 +819,7 @@ static int tze_seq_show(struct seq_file
 		trip_stats = &tze->trip_stats[trip_id];

 		/* Skip trips without any stats. */
-		if (trip_stats->min > trip_stats->max)
+		if (trip_stats->trip_temp == THERMAL_TEMP_INVALID)
 			continue;

 		if (trip->type == THERMAL_TRIP_PASSIVE)