linux-kernel - Re: [PATCH v5 01/17] EDAC/device: Make use of poll_msec value in edac_device_ctl

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Message-ID: <Y6wl2fhbg3emlyKd@zn.tnic>
Date:   Wed, 28 Dec 2022 12:17:45 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Cc:     andersson@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, tony.luck@...el.com,
        quic_saipraka@...cinc.com, konrad.dybcio@...aro.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        james.morse@....com, mchehab@...nel.org, rric@...nel.org,
        linux-edac@...r.kernel.org, quic_ppareek@...cinc.com,
        luca.weiss@...rphone.com, ahalaney@...hat.com, steev@...i.org,
        stable@...r.kernel.org
Subject: Re: [PATCH v5 01/17] EDAC/device: Make use of poll_msec value in
 edac_device_ctl_info struct

On Wed, Dec 28, 2022 at 02:10:12PM +0530, Manivannan Sadhasivam wrote:
> The EDAC drivers may optionally pass the poll_msec value. Use that value if
> available, else fall back to 1000ms.

Use this version for your next submission pls:

---
From: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Date: Wed, 28 Dec 2022 14:10:12 +0530
Subject: [PATCH] EDAC/device: Respect any driver-supplied workqueue polling value

The EDAC drivers may optionally pass the poll_msec value. Use that value
if available, else fall back to 1000ms.

  [ bp: Touchups. ]

Fixes: e27e3dac6517 ("drivers/edac: add edac_device class")
Reported-by: Luca Weiss <luca.weiss@...rphone.com>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Signed-off-by: Borislav Petkov (AMD) <bp@...en8.de>
Tested-by: Steev Klimaszewski <steev@...i.org> # Thinkpad X13s
Tested-by: Andrew Halaney <ahalaney@...hat.com> # sa8540p-ride
Cc: <stable@...r.kernel.org> # 4.9
Link: https://lore.kernel.org/r/COZYL8MWN97H.MROQ391BGA09@otso
---
 drivers/edac/edac_device.c | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/drivers/edac/edac_device.c b/drivers/edac/edac_device.c
index 19522c568aa5..a50b7bcfb731 100644
--- a/drivers/edac/edac_device.c
+++ b/drivers/edac/edac_device.c
@@ -34,6 +34,9 @@
 static DEFINE_MUTEX(device_ctls_mutex);
 static LIST_HEAD(edac_device_list);
 
+/* Default workqueue processing interval on this instance, in msecs */
+#define DEFAULT_POLL_INTERVAL 1000
+
 #ifdef CONFIG_EDAC_DEBUG
 static void edac_device_dump_device(struct edac_device_ctl_info *edac_dev)
 {
@@ -336,7 +339,7 @@ static void edac_device_workq_function(struct work_struct *work_req)
 	 * whole one second to save timers firing all over the period
 	 * between integral seconds
 	 */
-	if (edac_dev->poll_msec == 1000)
+	if (edac_dev->poll_msec == DEFAULT_POLL_INTERVAL)
 		edac_queue_work(&edac_dev->work, round_jiffies_relative(edac_dev->delay));
 	else
 		edac_queue_work(&edac_dev->work, edac_dev->delay);
@@ -366,7 +369,7 @@ static void edac_device_workq_setup(struct edac_device_ctl_info *edac_dev,
 	 * timers firing on sub-second basis, while they are happy
 	 * to fire together on the 1 second exactly
 	 */
-	if (edac_dev->poll_msec == 1000)
+	if (edac_dev->poll_msec == DEFAULT_POLL_INTERVAL)
 		edac_queue_work(&edac_dev->work, round_jiffies_relative(edac_dev->delay));
 	else
 		edac_queue_work(&edac_dev->work, edac_dev->delay);
@@ -398,7 +401,7 @@ void edac_device_reset_delay_period(struct edac_device_ctl_info *edac_dev,
 {
 	unsigned long jiffs = msecs_to_jiffies(value);
 
-	if (value == 1000)
+	if (value == DEFAULT_POLL_INTERVAL)
 		jiffs = round_jiffies_relative(value);
 
 	edac_dev->poll_msec = value;
@@ -443,11 +446,7 @@ int edac_device_add_device(struct edac_device_ctl_info *edac_dev)
 		/* This instance is NOW RUNNING */
 		edac_dev->op_state = OP_RUNNING_POLL;
 
-		/*
-		 * enable workq processing on this instance,
-		 * default = 1000 msec
-		 */
-		edac_device_workq_setup(edac_dev, 1000);
+		edac_device_workq_setup(edac_dev, edac_dev->poll_msec ?: DEFAULT_POLL_INTERVAL);
 	} else {
 		edac_dev->op_state = OP_RUNNING_INTERRUPT;
 	}
-- 
2.35.1

-- 
Regards/Gruss,
    Boris.

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