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

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  [PATCH] docs: Do not include from kernel/rcu/srcu.c Jonathan Corbet <corbet@lwn.net> - 2017-07-04 21:30 +0200
    Re: [PATCH] docs: Do not include from kernel/rcu/srcu.c "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2017-07-04 23:50 +0200

#1681142 — [PATCH] 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(-)

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:
 
-- 
2.9.4

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#1681195

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:
+

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