linux-kernel - Re: [PATCH] lockdep: Add missing declaration of 'pr

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Date:   Tue, 07 Nov 2017 17:10:07 +0100
From:   Alexander Sverdlin <alexander.sverdlin@...il.com>
To:     Mengting Zhang <zhangmengting@...wei.com>,
        alexander.levin@...izon.com, ben@...adent.org.uk
Cc:     linux-kernel@...r.kernel.org, huawei.libin@...wei.com
Subject: Re: [PATCH] lockdep: Add missing declaration of 'pr_cont()'

Hello!

On Tue Nov   7 03:24:20 2017 Mengting Zhang <zhangmengting@...wei.com> wrote:
> An annoying compile warning due to missing declaration is shown below:
> In file included from lockdep.c:27:0:
> ../../../kernel/locking/lockdep.c: In function
> 'print_unlock_imbalance_bug' : ../../../kernel/locking/lockdep.c:3544:2:
> warning: implicit declaration of function 'pr_cont'
> [-Wimplicit-function-declaration]   pr_cont(") at:\n");   ^
> Adding the declaration of 'pr_cont' fixes the problem.
> 
> Signed-off-by: Mengting Zhang <zhangmengting@...wei.com>

Your commit brought my attention to the fact that commit 681fbec881 brought a regression, rendering 20fb654ae fix ineffective.

But this is not related to your change, which I believe is correct:
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@...il.com> 

> ---
>   tools/include/linux/lockdep.h | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/tools/include/linux/lockdep.h
> b/tools/include/linux/lockdep.h index 8da3e8e..ae716ad 100644
> --- a/tools/include/linux/lockdep.h
> +++ b/tools/include/linux/lockdep.h
> @@ -47,6 +47,7 @@ static inline int debug_locks_off(void)
>   #define printk(...) dprintf(STDOUT_FILENO, __VA_ARGS__)
>   #define pr_err(format, ...) fprintf (stderr, format, ## __VA_ARGS__)
>   #define pr_warn pr_err
> +#define pr_cont pr_err
>   
>   #define list_del_rcu list_del
>   
> -- 
> 1.7.12.4
>