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Subject[PATCH V2,RESEND 2/4] doc: watchdog: Delete the explanation about "watchdog/%u".
Date
"watchdog/%u" threads has be replaced by cpu_stop_work. The current description
is extremely misleading, so delete the explanation about "watchdog/%u".

Signed-off-by: Wang Qing <wangqing@vivo.com>
---
.../admin-guide/kernel-per-CPU-kthreads.rst | 20 --------------------
1 file changed, 20 deletions(-)

diff --git a/Documentation/admin-guide/kernel-per-CPU-kthreads.rst b/Documentation/admin-guide/kernel-per-CPU-kthreads.rst
index 531f689..5e51ee5
--- a/Documentation/admin-guide/kernel-per-CPU-kthreads.rst
+++ b/Documentation/admin-guide/kernel-per-CPU-kthreads.rst
@@ -332,23 +332,3 @@ To reduce its OS jitter, do at least one of the following:
kthreads from being created in the first place. However, please
note that this will not eliminate OS jitter, but will instead
shift it to RCU_SOFTIRQ.
-
-Name:
- watchdog/%u
-
-Purpose:
- Detect software lockups on each CPU.
-
-To reduce its OS jitter, do at least one of the following:
-
-1. Build with CONFIG_LOCKUP_DETECTOR=n, which will prevent these
- kthreads from being created in the first place.
-2. Boot with "nosoftlockup=0", which will also prevent these kthreads
- from being created. Other related watchdog and softlockup boot
- parameters may be found in Documentation/admin-guide/kernel-parameters.rst
- and Documentation/watchdog/watchdog-parameters.rst.
-3. Echo a zero to /proc/sys/kernel/watchdog to disable the
- watchdog timer.
-4. Echo a large number of /proc/sys/kernel/watchdog_thresh in
- order to reduce the frequency of OS jitter due to the watchdog
- timer down to a level that is acceptable for your workload.
--
2.7.4
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