linux-kernel - Re: [PATCH] Use pid

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Message-ID: <CALCETrVyT6R6mYnVuv9vqmeCC7_TB2KZPCqfcmMyLvjbZPs+Ag@mail.gmail.com>
Date:	Sun, 8 May 2016 18:25:48 -0700
From:	Andy Lutomirski <luto@...capital.net>
To:	René Nyffenegger <mail@...enyffenegger.ch>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Josh Triplett <josh@...htriplett.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	"Steven Rostedt (Red Hat)" <rostedt@...dmis.org>,
	Zach Brown <zab@...hat.com>, Milosz Tanski <milosz@...in.com>,
	Arnd Bergmann <arnd@...db.de>,
	Linux API <linux-api@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Use pid_t instead of int

On Sun, May 8, 2016 at 12:38 PM, René Nyffenegger
<mail@...enyffenegger.ch> wrote:
> Use pid_t instead of int in the declarations of sys_kill, sys_tgkill,
> sys_tkill and sys_rt_sigqueueinfo in include/linux/syscalls.h

The description is no good.  *Why* are you changing it?

I checked tgkill and, indeed, tgkill takes pid_t parameters, so this
fixes an incorrect declaration.  I'm wondering why the code compiles
without warning.  Is SYSCALL_DEFINE too lenient for some reason?  Or
is pid_t just defined as int.

--Andy