linux-kernel - [PATCH V2,RESEND 1/4] kernel: watchdog: Modify the explanation related to watchdog thread

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Message-Id: <1619687073-24686-2-git-send-email-wangqing@vivo.com>
Date:   Thu, 29 Apr 2021 17:04:25 +0800
From:   Wang Qing <wangqing@...o.com>
To:     Jonathan Corbet <corbet@....net>, Wang Qing <wangqing@...o.com>,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Joe Perches <joe@...ches.com>, Stephen Kitt <steve@....org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Kees Cook <keescook@...omium.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        "Guilherme G. Piccoli" <gpiccoli@...onical.com>,
        Qais Yousef <qais.yousef@....com>,
        Petr Mladek <pmladek@...e.com>,
        Santosh Sivaraj <santosh@...six.org>,
        Vlastimil Babka <vbabka@...e.cz>, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH V2,RESEND 1/4] kernel: watchdog: Modify the explanation related to watchdog thread

The watchdog thread has been replaced by cpu_stop_work, modify the 
explanation related.

Signed-off-by: Wang Qing <wangqing@...o.com>
---
 kernel/watchdog.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 7110906..d7fb4fb
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -92,7 +92,7 @@ __setup("nmi_watchdog=", hardlockup_panic_setup);
  * own hardlockup detector.
  *
  * watchdog_nmi_enable/disable can be implemented to start and stop when
- * softlockup watchdog threads start and stop. The arch must select the
+ * softlockup watchdog start and stop. The arch must select the
  * SOFTLOCKUP_DETECTOR Kconfig.
  */
 int __weak watchdog_nmi_enable(unsigned int cpu)
@@ -322,7 +322,7 @@ static DEFINE_PER_CPU(struct completion, softlockup_completion);
 static DEFINE_PER_CPU(struct cpu_stop_work, softlockup_stop_work);
 
 /*
- * The watchdog thread function - touches the timestamp.
+ * The watchdog feed function - touches the timestamp.
  *
  * It only runs once every sample_period seconds (4 seconds by
  * default) to reset the softlockup timestamp. If this gets delayed
@@ -551,11 +551,7 @@ static void lockup_detector_reconfigure(void)
 }
 
 /*
- * Create the watchdog thread infrastructure and configure the detector(s).
- *
- * The threads are not unparked as watchdog_allowed_mask is empty.  When
- * the threads are successfully initialized, take the proper locks and
- * unpark the threads in the watchdog_cpumask if the watchdog is enabled.
+ * Create the watchdog infrastructure and configure the detector(s).
  */
 static __init void lockup_detector_setup(void)
 {
@@ -621,7 +617,7 @@ void lockup_detector_soft_poweroff(void)
 
 #ifdef CONFIG_SYSCTL
 
-/* Propagate any changes to the watchdog threads */
+/* Propagate any changes to the watchdog infrastructure */
 static void proc_watchdog_update(void)
 {
 	/* Remove impossible cpus to keep sysctl output clean. */
-- 
2.7.4