From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753290AbeC2LaV (ORCPT ); Thu, 29 Mar 2018 07:30:21 -0400 Received: from isilmar-4.linta.de ([136.243.71.142]:59216 "EHLO isilmar-4.linta.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752938AbeC2L01 (ORCPT ); Thu, 29 Mar 2018 07:26:27 -0400 From: Dominik Brodowski To: linux-kernel@vger.kernel.org Cc: viro@ZenIV.linux.org.uk, torvalds@linux-foundation.org, arnd@arndb.de, linux-arch@vger.kernel.org, Al Viro Subject: [PATCH 040/109] kernel: add do_getpgid() helper; remove internal call to sys_getpgid() Date: Thu, 29 Mar 2018 13:23:17 +0200 Message-Id: <20180329112426.23043-41-linux@dominikbrodowski.net> X-Mailer: git-send-email 2.16.3 In-Reply-To: <20180329112426.23043-1-linux@dominikbrodowski.net> References: <20180329112426.23043-1-linux@dominikbrodowski.net> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Using the do_getpgid() helper removes an in-kernel call to the sys_getpgid() syscall. This patch is part of a series which removes in-kernel calls to syscalls. On this basis, the syscall entry path can be streamlined. For details, see http://lkml.kernel.org/r/20180325162527.GA17492@light.dominikbrodowski.net Cc: Al Viro Signed-off-by: Dominik Brodowski --- kernel/sys.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/kernel/sys.c b/kernel/sys.c index f2289de20e19..ebb138b841c8 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -1027,7 +1027,7 @@ SYSCALL_DEFINE2(setpgid, pid_t, pid, pid_t, pgid) return err; } -SYSCALL_DEFINE1(getpgid, pid_t, pid) +static int do_getpgid(pid_t pid) { struct task_struct *p; struct pid *grp; @@ -1055,11 +1055,16 @@ SYSCALL_DEFINE1(getpgid, pid_t, pid) return retval; } +SYSCALL_DEFINE1(getpgid, pid_t, pid) +{ + return do_getpgid(pid); +} + #ifdef __ARCH_WANT_SYS_GETPGRP SYSCALL_DEFINE0(getpgrp) { - return sys_getpgid(0); + return do_getpgid(0); } #endif -- 2.16.3