[Linux-kernel-mentees] [PATCH RESEND] Documentation: RCU: lockdep.txt: Convert to lockdep.rst

Paul E. McKenney paulmck at kernel.org
Thu Mar 5 00:10:45 UTC 2020


On Tue, Mar 03, 2020 at 08:15:46PM +0530, Pawan Kumar Meena wrote:
> This patch converts lockdep.txt to lockdep.rst and adds it to index.rst.
> 
> Signed-off-by: Pawan Kumar Meena <pawank1804 at gmail.com>

Given an ack from someone on the docs side, I will be happy to queue
this one.  Given the large change from the last posted version with no
version history, I am a bit leery of taking it straight away.

						Thanx, Paul

> ---
>  Documentation/RCU/index.rst                    | 1 +
>  Documentation/RCU/{lockdep.txt => lockdep.rst} | 9 ++++++---
>  2 files changed, 7 insertions(+), 3 deletions(-)
>  rename Documentation/RCU/{lockdep.txt => lockdep.rst} (97%)
> 
> diff --git a/Documentation/RCU/index.rst b/Documentation/RCU/index.rst
> index 81a0a1e5f767..109dea13f165 100644
> --- a/Documentation/RCU/index.rst
> +++ b/Documentation/RCU/index.rst
> @@ -10,6 +10,7 @@ RCU concepts
>     arrayRCU
>     rcubarrier
>     rcu_dereference
> +   lockdep
>     whatisRCU
>     rcu
>     listRCU
> diff --git a/Documentation/RCU/lockdep.txt b/Documentation/RCU/lockdep.rst
> similarity index 97%
> rename from Documentation/RCU/lockdep.txt
> rename to Documentation/RCU/lockdep.rst
> index 89db949eeca0..3a88d8a59753 100644
> --- a/Documentation/RCU/lockdep.txt
> +++ b/Documentation/RCU/lockdep.rst
> @@ -1,4 +1,7 @@
> +.. _lockdep_doc:
> +
>  RCU and lockdep checking
> +========================
>  
>  All flavors of RCU have lockdep checking available, so that lockdep is
>  aware of when each task enters and leaves any flavor of RCU read-side
> @@ -63,7 +66,7 @@ checking of rcu_dereference() primitives:
>  The rcu_dereference_check() check expression can be any boolean
>  expression, but would normally include a lockdep expression.  However,
>  any boolean expression can be used.  For a moderately ornate example,
> -consider the following:
> +consider the following::
>  
>  	file = rcu_dereference_check(fdt->fd[fd],
>  				     lockdep_is_held(&files->file_lock) ||
> @@ -82,7 +85,7 @@ RCU read-side critical sections, in case (2) the ->file_lock prevents
>  any change from taking place, and finally, in case (3) the current task
>  is the only task accessing the file_struct, again preventing any change
>  from taking place.  If the above statement was invoked only from updater
> -code, it could instead be written as follows:
> +code, it could instead be written as follows::
>  
>  	file = rcu_dereference_protected(fdt->fd[fd],
>  					 lockdep_is_held(&files->file_lock) ||
> @@ -105,7 +108,7 @@ false and they are called from outside any RCU read-side critical section.
>  
>  For example, the workqueue for_each_pwq() macro is intended to be used
>  either within an RCU read-side critical section or with wq->mutex held.
> -It is thus implemented as follows:
> +It is thus implemented as follows::
>  
>  	#define for_each_pwq(pwq, wq)
>  		list_for_each_entry_rcu((pwq), &(wq)->pwqs, pwqs_node,
> -- 
> 2.17.1
> 


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