docs: Do not include from kernel/rcu/srcu.c

That file went away with commit bd8cc5a062f4 (srcu: Remove Classic SRCU)
during the 4.13 merge window, leading to errors like:

  Error: Cannot open file ./kernel/rcu/srcu.c

during the docs build.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

---
Probably we should really put the RCU documentation into the core-API
manual, but that's a change for another day.

 Documentation/driver-api/basics.rst | 3 ---
 1 file changed, 3 deletions(-)

-- 
2.9.4

On Tue, Jul 04, 2017 at 01:26:47PM -0600, Jonathan Corbet wrote:
> That file went away with commit bd8cc5a062f4 (srcu: Remove Classic SRCU)

> during the 4.13 merge window, leading to errors like:

> 

>   Error: Cannot open file ./kernel/rcu/srcu.c

> 

> during the docs build.

> 

> Reported-by: Linus Torvalds <torvalds@linux-foundation.org>

> Signed-off-by: Jonathan Corbet <corbet@lwn.net>


Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>


> ---

> Probably we should really put the RCU documentation into the core-API

> manual, but that's a change for another day.


Would it make sense to have checkpatch.pl to point to these files as well as
to MAINTAINERS when files are added or removed?  I freely confess that I
have only rarely updated the kernel-doc files.

Here are the list of RCU-related files containing kernel-doc headers:

$ grep -l "/\*\*" include/linux/*rcu* kernel/rcu/*
include/linux/rculist_bl.h
include/linux/rculist.h
include/linux/rculist_nulls.h
include/linux/rcupdate.h
include/linux/rcupdate_wait.h
include/linux/rcu_sync.h
include/linux/rcutree.h
include/linux/srcu.h
kernel/rcu/srcutree.c
kernel/rcu/sync.c
kernel/rcu/tree.c
kernel/rcu/tree_exp.h
kernel/rcu/tree_plugin.h
kernel/rcu/update.c

>  Documentation/driver-api/basics.rst | 3 ---

>  1 file changed, 3 deletions(-)

> 

> diff --git a/Documentation/driver-api/basics.rst b/Documentation/driver-api/basics.rst

> index 472e7a664d13..ab82250c7727 100644

> --- a/Documentation/driver-api/basics.rst

> +++ b/Documentation/driver-api/basics.rst

> @@ -106,9 +106,6 @@ Kernel utility functions

>  .. kernel-doc:: kernel/sys.c

>     :export:

> 

> -.. kernel-doc:: kernel/rcu/srcu.c

> -   :export:

> -

>  .. kernel-doc:: kernel/rcu/tree.c

>     :export:


So something like this, ignoring the Documentation/driver-api/basics.rst
cleanup that would be needed (for the moment)?

							Thanx, Paul

------------------------------------------------------------------------

commit 565fde68a1d3d77386ddc0e6881cf11b52ca2578
Author: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Date:   Tue Jul 4 14:42:20 2017 -0700

    doc: Add RCU files to docbook-generation files
    
    Suggested-by: Jonathan Corbet <corbet@lwn.net>
    Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>diff --git a/Documentation/core-api/kernel-api.rst b/Documentation/core-api/kernel-api.rst

index 9ec8488319dc..252452dc5ffd 100644
--- a/Documentation/core-api/kernel-api.rst
+++ b/Documentation/core-api/kernel-api.rst
@@ -344,3 +344,52 @@ codecs, and devices with strict requirements for interface clocking.
 
 .. kernel-doc:: include/linux/clk.h
    :internal:
+
+Synchronization Primitives
+==========================
+
+Read-Copy Update (RCU)
+----------------------
+
+.. kernel-doc:: include/linux/rcupdate.h
+   :external:
+
+.. kernel-doc:: include/linux/rcupdate_wait.h
+   :external:
+
+.. kernel-doc:: include/linux/rcutree.h
+   :external:
+
+.. kernel-doc:: kernel/rcu/tree.c
+   :external:
+
+.. kernel-doc:: kernel/rcu/tree_plugin.h
+   :external:
+
+.. kernel-doc:: kernel/rcu/tree_exp.h
+   :external:
+
+.. kernel-doc:: kernel/rcu/update.c
+   :external:
+
+.. kernel-doc:: include/linux/srcu.h
+   :external:
+
+.. kernel-doc:: kernel/rcu/srcutree.c
+   :external:
+
+.. kernel-doc:: include/linux/rculist_bl.h
+   :external:
+
+.. kernel-doc:: include/linux/rculist.h
+   :external:
+
+.. kernel-doc:: include/linux/rculist_nulls.h
+   :external:
+
+.. kernel-doc:: include/linux/rcu_sync.h
+   :external:
+
+.. kernel-doc:: kernel/rcu/sync.c
+   :external:
+