Re: [PATCH -next] smp: Make symbol 'csd_bug_count' static

From: Paul E. McKenney
Date: Mon Jul 06 2020 - 14:37:05 EST


On Mon, Jul 06, 2020 at 09:49:41PM +0800, Wei Yongjun wrote:
> The sparse tool complains as follows
>
> kernel/smp.c:107:10: warning:
> symbol 'csd_bug_count' was not declared. Should it be static?
>
> This variable is not used outside of smp.c, s this commit marks
> it static.
>
> Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
> Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx>

Good catches, applied both, thank you!

Thanx, Paul

> ---
> kernel/smp.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/kernel/smp.c b/kernel/smp.c
> index 6ec6c9578225..65822c1c3e67 100644
> --- a/kernel/smp.c
> +++ b/kernel/smp.c
> @@ -104,7 +104,7 @@ void __init call_function_init(void)
> }
>
> #define CSD_LOCK_TIMEOUT (5 * 1000ULL) /* Milliseconds. */
> -atomic_t csd_bug_count = ATOMIC_INIT(0);
> +static atomic_t csd_bug_count = ATOMIC_INIT(0);
>
> /* Record current CSD work for current CPU, NULL to erase. */
> static void csd_lock_record(call_single_data_t *csd)
>