Re: [PATCH 1/1] docs/memory-barriers.txt: Add wait_event_cmd() and wait_event_exclusive_cmd()

[Matthew Wilcox]

On Thu, Jun 26, 2025 at 04:37:05PM +0200, Håkon Bugge wrote:
> Add said functions to the documentation and relate them to userspace's
> pthread_cond_wait(). The latter because when searching for
> functionality comparable to pthread_cond_wait(), it is very hard to
> find wait_event_cmd().

Would it not go better in the kernel-doc for wait_event_cmd() in
include/linux/wait.h?

>  
> +Note that the wait_event_cmd() and wait_event_exclusive_cmd() are the
> +kernel's polymorphic implementation of userspace's
> +pthread_cond_wait().

Pet peeve: "Note that" adds nothing to this sentence.  You can just
write:

The wait_event_cmd() and wait_event_exclusive_cmd() functions are the
kernel's polymorphic implementation of userspace's pthread_cond_wait().

> +Using wait_event_cmd() or wait_event_exclusive_cmd(), cmd1 is
> +typically a lock-release call and cmd2 a lock-acquire call. The
> +locking primitive can be chosen, contrary to pthread_cond_wait(),
> +where the locking type is cast in stone and is a pthread_mutex_t.
> +
>  
>  MISCELLANEOUS FUNCTIONS
>  -----------------------
> -- 
> 2.43.5
> 
>