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From: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
To: Al Viro <viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn@public.gmane.org>,
	Linus Torvalds
	<torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
Cc: Greg Kroah-Hartman
	<gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>,
	"Rafael J. Wysocki"
	<rafael-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-raid-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH 05/21] init: initialize ramdisk_execute_command at compile time
Date: Sun, 26 Jul 2020 09:13:40 +0200	[thread overview]
Message-ID: <20200726071356.287160-6-hch@lst.de> (raw)
In-Reply-To: <20200726071356.287160-1-hch-jcswGhMUV9g@public.gmane.org>

Set ramdisk_execute_command to "/init" at compile time.  The command
line can still override it, but this saves a few instructions and
removes a NULL check.

Signed-off-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
---
 init/main.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/init/main.c b/init/main.c
index db0621dfbb0468..c2c9143db96795 100644
--- a/init/main.c
+++ b/init/main.c
@@ -154,7 +154,7 @@ static bool initargs_found;
 #endif
 
 static char *execute_command;
-static char *ramdisk_execute_command;
+static char *ramdisk_execute_command = "/init";
 
 /*
  * Used to generate warnings if static_key manipulation functions are used
@@ -1514,10 +1514,6 @@ static noinline void __init kernel_init_freeable(void)
 	 * check if there is an early userspace init.  If yes, let it do all
 	 * the work
 	 */
-
-	if (!ramdisk_execute_command)
-		ramdisk_execute_command = "/init";
-
 	if (ksys_access((const char __user *)
 			ramdisk_execute_command, 0) != 0) {
 		ramdisk_execute_command = NULL;
-- 
2.27.0

WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Al Viro <viro@zeniv.linux.org.uk>,
	Linus Torvalds <torvalds@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org,
	linux-fsdevel@vger.kernel.org, linux-api@vger.kernel.org
Subject: [PATCH 05/21] init: initialize ramdisk_execute_command at compile time
Date: Sun, 26 Jul 2020 09:13:40 +0200	[thread overview]
Message-ID: <20200726071356.287160-6-hch@lst.de> (raw)
In-Reply-To: <20200726071356.287160-1-hch@lst.de>

Set ramdisk_execute_command to "/init" at compile time.  The command
line can still override it, but this saves a few instructions and
removes a NULL check.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 init/main.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/init/main.c b/init/main.c
index db0621dfbb0468..c2c9143db96795 100644
--- a/init/main.c
+++ b/init/main.c
@@ -154,7 +154,7 @@ static bool initargs_found;
 #endif
 
 static char *execute_command;
-static char *ramdisk_execute_command;
+static char *ramdisk_execute_command = "/init";
 
 /*
  * Used to generate warnings if static_key manipulation functions are used
@@ -1514,10 +1514,6 @@ static noinline void __init kernel_init_freeable(void)
 	 * check if there is an early userspace init.  If yes, let it do all
 	 * the work
 	 */
-
-	if (!ramdisk_execute_command)
-		ramdisk_execute_command = "/init";
-
 	if (ksys_access((const char __user *)
 			ramdisk_execute_command, 0) != 0) {
 		ramdisk_execute_command = NULL;
-- 
2.27.0


  parent reply	other threads:[~2020-07-26  7:13 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-26  7:13 add file system helpers that take kernel pointers for the init code v3 Christoph Hellwig
2020-07-26  7:13 ` Christoph Hellwig
2020-07-26  7:13 ` [PATCH 01/21] fs: refactor do_mount Christoph Hellwig
2020-07-26  7:13 ` [PATCH 03/21] fs: push the getname from do_rmdir into the callers Christoph Hellwig
2020-07-26  7:13 ` [PATCH 06/21] init: mark create_dev as __init Christoph Hellwig
2020-07-26  7:13 ` [PATCH 07/21] init: add an init_mount helper Christoph Hellwig
     [not found] ` <20200726071356.287160-1-hch-jcswGhMUV9g@public.gmane.org>
2020-07-26  7:13   ` [PATCH 02/21] fs: refactor ksys_umount Christoph Hellwig
2020-07-26  7:13     ` Christoph Hellwig
2020-07-26  7:13   ` [PATCH 04/21] devtmpfs: refactor devtmpfsd() Christoph Hellwig
2020-07-26  7:13     ` Christoph Hellwig
     [not found]     ` <20200726071356.287160-5-hch-jcswGhMUV9g@public.gmane.org>
2020-07-26  7:43       ` Greg Kroah-Hartman
2020-07-26  7:43         ` Greg Kroah-Hartman
2020-07-26  8:21         ` Christoph Hellwig
2020-07-26  7:13   ` Christoph Hellwig [this message]
2020-07-26  7:13     ` [PATCH 05/21] init: initialize ramdisk_execute_command at compile time Christoph Hellwig
2020-07-26  7:13   ` [PATCH 08/21] init: add an init_umount helper Christoph Hellwig
2020-07-26  7:13     ` Christoph Hellwig
2020-07-26  7:13   ` [PATCH 09/21] init: add an init_unlink helper Christoph Hellwig
2020-07-26  7:13     ` Christoph Hellwig
2020-07-26  7:13 ` [PATCH 10/21] init: add an init_rmdir helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 11/21] init: add an init_chdir helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 12/21] init: add an init_chroot helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 13/21] init: add an init_chown helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 14/21] init: add an init_chmod helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 15/21] init: add an init_eaccess helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 16/21] init: add an init_link helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 17/21] init: add an init_symlink helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 18/21] init: add an init_mkdir helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 19/21] init: add an init_mknod helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 20/21] init: add an init_stat helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 21/21] init: add an init_utimes helper Christoph Hellwig
2020-07-26 15:49 ` add file system helpers that take kernel pointers for the init code v3 Linus Torvalds
     [not found]   ` <CAHk-=wgq8evViJD9Hnjugq=V0eUAn7K6ZjOP7P7qki-nOTx_jg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2020-07-26 15:52     ` Christoph Hellwig
2020-07-26 15:52       ` Christoph Hellwig
2020-07-26 16:21       ` Al Viro
     [not found]         ` <20200726162113.GR2786714-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2020-07-26 16:24           ` Christoph Hellwig
2020-07-26 16:24             ` Christoph Hellwig
     [not found]             ` <20200726162426.GA24479-jcswGhMUV9g@public.gmane.org>
2020-07-26 16:26               ` Christoph Hellwig
2020-07-26 16:26                 ` Christoph Hellwig
     [not found]                 ` <20200726162627.GA24522-jcswGhMUV9g@public.gmane.org>
2020-07-26 16:33                   ` Al Viro
2020-07-26 16:33                     ` Al Viro

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