linux-kernel - [PATCH 1/2] pmdomain: core: Update the rejected/usage counters at system suspend too

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Message-Id: <20240412104208.74361-1-ulf.hansson@linaro.org>
Date: Fri, 12 Apr 2024 12:42:07 +0200
From: Ulf Hansson <ulf.hansson@...aro.org>
To: Ulf Hansson <ulf.hansson@...aro.org>,
	linux-pm@...r.kernel.org
Cc: "Rafael J . Wysocki" <rafael@...nel.org>,
	Nikunj Kela <nkela@...cinc.com>,
	Prasad Sodagudi <psodagud@...cinc.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] pmdomain: core: Update the rejected/usage counters at system suspend too

During system suspend we may try to enter a low power-state for the genpd
in question. Let's take this into account for the statistics too, by
updating the rejected/usage counters for the corresponding state.

Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
---
 drivers/pmdomain/core.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/pmdomain/core.c b/drivers/pmdomain/core.c
index 4215ffd9b11c..903ea0c193e1 100644
--- a/drivers/pmdomain/core.c
+++ b/drivers/pmdomain/core.c
@@ -1178,8 +1178,12 @@ static void genpd_sync_power_off(struct generic_pm_domain *genpd, bool use_lock,
 
 	/* Choose the deepest state when suspending */
 	genpd->state_idx = genpd->state_count - 1;
-	if (_genpd_power_off(genpd, false))
+	if (_genpd_power_off(genpd, false)) {
+		genpd->states[genpd->state_idx].rejected++;
 		return;
+	} else {
+		genpd->states[genpd->state_idx].usage++;
+	}
 
 	genpd->status = GENPD_STATE_OFF;
 
-- 
2.34.1