Re: rcu kernel-doc issues (4.14-rc1)

[Paul E. McKenney]

On Sat, Sep 16, 2017 at 06:26:04PM -0700, Randy Dunlap wrote:
> On 4.14-rc1, I am seeing lots of warnings on rcu kernel-doc:
> 
> .. kernel-doc:: include/linux/rcupdate.h
>    :external:
> ./Documentation/core-api/kernel-api.rst:357: ERROR: Error in "kernel-doc" directive:
> unknown option: "external".

$ grep external include/linux/rcupdate.h
 * by a single external-to-structure RCU-protected pointer, then you may
 * external-to-structure pointer -after- you have completely initialized

Do these comments somehow qualify as an "external" option?  If so, how
do I tell kernel-doc to ignore them?  Or must I reword them to avoid
the word "external"?

> .. kernel-doc:: include/linux/rcupdate_wait.h
>    :external:
> ./Documentation/core-api/kernel-api.rst:360: ERROR: Error in "kernel-doc" directive:
> unknown option: "external".

$ grep external include/linux/rcupdate_wait.h

There is no occurrence of the string "external" in this file.  So this
"external" option is unknown to me as well.  So, any hints on how I
should interpret these error messages?

								Thanx, Paul

> .. kernel-doc:: include/linux/rcutree.h
>    :external:
> ./Documentation/core-api/kernel-api.rst:363: ERROR: Error in "kernel-doc" directive:
> unknown option: "external".
> 
> .. kernel-doc:: kernel/rcu/tree.c
>    :external:
> ./Documentation/core-api/kernel-api.rst:366: ERROR: Error in "kernel-doc" directive:
> unknown option: "external".
> 
> .. kernel-doc:: kernel/rcu/tree_plugin.h
>    :external:
> ./Documentation/core-api/kernel-api.rst:369: ERROR: Error in "kernel-doc" directive:
> unknown option: "external".
> 
> .. kernel-doc:: kernel/rcu/tree_exp.h
>    :external:
> ./Documentation/core-api/kernel-api.rst:372: ERROR: Error in "kernel-doc" directive:
> unknown option: "external".
> 
> .. kernel-doc:: kernel/rcu/update.c
>    :external:
> ./Documentation/core-api/kernel-api.rst:375: ERROR: Error in "kernel-doc" directive:
> unknown option: "external".
> 
> .. kernel-doc:: include/linux/srcu.h
>    :external:
> ./Documentation/core-api/kernel-api.rst:378: ERROR: Error in "kernel-doc" directive:
> unknown option: "external".
> 
> .. kernel-doc:: kernel/rcu/srcutree.c
>    :external:
> ./Documentation/core-api/kernel-api.rst:381: ERROR: Error in "kernel-doc" directive:
> unknown option: "external".
> 
> .. kernel-doc:: include/linux/rculist_bl.h
>    :external:
> ./Documentation/core-api/kernel-api.rst:384: ERROR: Error in "kernel-doc" directive:
> unknown option: "external".
> 
> .. kernel-doc:: include/linux/rculist.h
>    :external:
> ./Documentation/core-api/kernel-api.rst:387: ERROR: Error in "kernel-doc" directive:
> unknown option: "external".
> 
> .. kernel-doc:: include/linux/rculist_nulls.h
>    :external:
> ./Documentation/core-api/kernel-api.rst:390: ERROR: Error in "kernel-doc" directive:
> unknown option: "external".
> 
> .. kernel-doc:: include/linux/rcu_sync.h
>    :external:
> ./Documentation/core-api/kernel-api.rst:393: ERROR: Error in "kernel-doc" directive:
> unknown option: "external".
> 
> .. kernel-doc:: kernel/rcu/sync.c
>    :external:
> 
> ../kernel/rcu/tree.c:3091: ERROR: Unexpected indentation.
> ../kernel/rcu/tree.c:3118: ERROR: Unexpected indentation.
> ../kernel/rcu/tree.c:3119: WARNING: Bullet list ends without a blank line; unexpected unindent.
> 
> 
> -- 
> ~Randy
>