linux-kernel - [RFC v4 5/5] platform/x86/intel/pmc: core: Report duration of time in HW sleep state

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Message-ID: <20221117225822.16154-6-mario.limonciello@amd.com>
Date:   Thu, 17 Nov 2022 16:58:21 -0600
From:   Mario Limonciello <mario.limonciello@....com>
To:     "Rafael J . Wysocki" <rafael@...nel.org>,
        Rajneesh Bhardwaj <irenic.rajneesh@...il.com>,
        David E Box <david.e.box@...el.com>
CC:     Sven van Ashbrook <svenva@...omium.org>,
        Raul Rangel <rrangel@...omium.org>, <linux-pm@...r.kernel.org>,
        <platform-driver-x86@...r.kernel.org>, Pavel Machek <pavel@....cz>,
        Len Brown <len.brown@...el.com>,
        John Stultz <jstultz@...gle.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Stephen Boyd <sboyd@...nel.org>,
        S-k Shyam-sundar <Shyam-sundar.S-k@....com>,
        Rajat Jain <rajatja@...gle.com>,
        Hans de Goede <hdegoede@...hat.com>,
        <linux-kernel@...r.kernel.org>,
        Mario Limonciello <mario.limonciello@....com>,
        Mark Gross <markgross@...nel.org>
Subject: [RFC v4 5/5] platform/x86/intel/pmc: core: Report duration of time in HW sleep state

intel_pmc_core displays a warning when the module parameter
`warn_on_s0ix_failures` is set and a suspend didn't get to a HW sleep
state.

Report this to the standard kernel reporting infrastructure that will
be used to display a percentage of time spent in a hw sleep state.

Signed-off-by: Mario Limonciello <mario.limonciello@....com>
---
RFC v3->v4:
 * New patch
---
 drivers/platform/x86/intel/pmc/core.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/platform/x86/intel/pmc/core.c b/drivers/platform/x86/intel/pmc/core.c
index 9baf2bb443c8..0e25348f1c2a 100644
--- a/drivers/platform/x86/intel/pmc/core.c
+++ b/drivers/platform/x86/intel/pmc/core.c
@@ -2094,6 +2094,8 @@ static inline bool pmc_core_is_s0ix_failed(struct pmc_dev *pmcdev)
 	if (pmc_core_dev_state_get(pmcdev, &s0ix_counter))
 		return false;
 
+	pm_set_hw_sleep_time(s0ix_counter - pmcdev->s0ix_counter);
+
 	if (s0ix_counter == pmcdev->s0ix_counter)
 		return true;
 
-- 
2.34.1