Re: [PATCH] signal: clean up codestyle

[Christian Brauner]

On Tue, Sep 01, 2020 at 07:58:00AM -0400, Miaohe Lin wrote:
> No functional change intended.

Hey Miaohe,

Thank you for the patch.
I'm sure this is well-intended but afaict the whole file has more or
less a consistent style already where e.g. sig-1 without spaces seems to
be preferred. The same for the casts where most places use a single
space.

Now, I know CodingStyle.rst is on your side at least when it comes to
the first point:

Use one space around (on each side of) most binary and ternary operators,
such as any of these::

	=  +  -  <  >  *  /  %  |  &  ^  <=  >=  ==  !=  ?  :

but then you'd need to change each place in kernel/signal.c where that
is currently not the case. Otherwise we end up with a weird mix.

Thanks!
Christian

> 
> Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
> ---
>  kernel/signal.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/kernel/signal.c b/kernel/signal.c
> index a38b3edc6851..10a31fafc35b 100644
> --- a/kernel/signal.c
> +++ b/kernel/signal.c
> @@ -1115,8 +1115,8 @@ static int __send_signal(int sig, struct kernel_siginfo *info, struct task_struc
>  	q = __sigqueue_alloc(sig, t, GFP_ATOMIC, override_rlimit);
>  	if (q) {
>  		list_add_tail(&q->list, &pending->list);
> -		switch ((unsigned long) info) {
> -		case (unsigned long) SEND_SIG_NOINFO:
> +		switch ((unsigned long)info) {
> +		case (unsigned long)SEND_SIG_NOINFO:
>  			clear_siginfo(&q->info);
>  			q->info.si_signo = sig;
>  			q->info.si_errno = 0;
> @@ -1129,7 +1129,7 @@ static int __send_signal(int sig, struct kernel_siginfo *info, struct task_struc
>  						 current_uid());
>  			rcu_read_unlock();
>  			break;
> -		case (unsigned long) SEND_SIG_PRIV:
> +		case (unsigned long)SEND_SIG_PRIV:
>  			clear_siginfo(&q->info);
>  			q->info.si_signo = sig;
>  			q->info.si_errno = 0;
> @@ -1314,7 +1314,7 @@ force_sig_info_to_task(struct kernel_siginfo *info, struct task_struct *t)
>  	int sig = info->si_signo;
>  
>  	spin_lock_irqsave(&t->sighand->siglock, flags);
> -	action = &t->sighand->action[sig-1];
> +	action = &t->sighand->action[sig - 1];
>  	ignored = action->sa.sa_handler == SIG_IGN;
>  	blocked = sigismember(&t->blocked, sig);
>  	if (blocked || ignored) {
> -- 
> 2.19.1
>