linux-kernel - [PATCH v1] platform/x86: intel_pmc_core: promote S0ix failure warn() to WARN()

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20221027151908.v1.1.I295e65357f06f162b46ea6fc6c03be37e3978bdc@changeid>
Date:   Thu, 27 Oct 2022 15:19:14 +0000
From:   Sven van Ashbrook <svenva@...omium.org>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     platform-driver-x86@...r.kernel.org,
        Rajneesh Bhardwaj <rajneesh.bhardwaj@...el.com>,
        Rafael J Wysocki <rjw@...ysocki.net>,
        Rajat Jain <rajatja@...gle.com>,
        Sven van Ashbrook <svenva@...omium.org>,
        David E Box <david.e.box@...el.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <markgross@...nel.org>,
        Rajneesh Bhardwaj <irenic.rajneesh@...il.com>
Subject: [PATCH v1] platform/x86: intel_pmc_core: promote S0ix failure warn() to WARN()

The "failure to enter S0ix" warning is critically important for monitoring
and debugging power regressions, both in the field and in the test lab.

Promote from lower-case warn() to upper-case WARN() so that it becomes
more prominent, and gets picked up as part of existing monitoring
infrastructure, which typically focuses on WARN() and ignores warn()
type log messages.

Signed-off-by: Sven van Ashbrook <svenva@...omium.org>
---
Against v6.1-rc2

 drivers/platform/x86/intel/pmc/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/platform/x86/intel/pmc/core.c b/drivers/platform/x86/intel/pmc/core.c
index a1fe1e0dcf4a5..834f0352c0edf 100644
--- a/drivers/platform/x86/intel/pmc/core.c
+++ b/drivers/platform/x86/intel/pmc/core.c
@@ -2125,7 +2125,7 @@ static __maybe_unused int pmc_core_resume(struct device *dev)
 	}
 
 	/* The real interesting case - S0ix failed - lets ask PMC why. */
-	dev_warn(dev, "CPU did not enter SLP_S0!!! (S0ix cnt=%llu)\n",
+	dev_WARN(dev, "CPU did not enter SLP_S0!!! (S0ix cnt=%llu)\n",
 		 pmcdev->s0ix_counter);
 	if (pmcdev->map->slps0_dbg_maps)
 		pmc_core_slps0_display(pmcdev, dev, NULL);
-- 
2.38.0.135.g90850a2211-goog