linux-kernel - [PATCH 7/8] Documentation: replace install commands with softdeps

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Date:	Fri, 30 Mar 2012 13:37:20 -0700
From:	Randy Dunlap <rdunlap@...otime.net>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
CC:	LKML <linux-kernel@...r.kernel.org>,
	Lucas De Marchi <lucas.demarchi@...fusion.mobi>
Subject: [PATCH 7/8] Documentation: replace install commands with softdeps

From:	Lucas De Marchi <lucas.demarchi@...fusion.mobi>

Documentation: replace install commands with softdeps

Install commands should not be used to specify soft dependencies among
modules. When loading modules it's much better to have a softdep that
modprobe knows what's being done than having to fork/exec another
instance of modprobe to load the other module.

By using a softdep user has also an option to remove the dependencies
when removing the module (and if its refcount dropped to 0)

Signed-off-by: Lucas De Marchi <lucas.demarchi@...fusion.mobi>
---

v2: addressed comments from Takashi Iwai and split the patch in two. There were
some changes to install commands that are better placed in a separate patch


 Documentation/networking/bonding.txt    |    3 +--
 Documentation/sound/oss/AudioExcelDSP16 |    4 ++--
 Documentation/sound/oss/README.modules  |    2 +-
 3 files changed, 4 insertions(+), 5 deletions(-)

--- lnx-33.orig/Documentation/networking/bonding.txt
+++ lnx-33/Documentation/networking/bonding.txt
@@ -1822,8 +1822,7 @@ modules.conf manual page.
 In this case, the following can be added to config files in
 /etc/modprobe.d/ as:
 
-install bonding /sbin/modprobe tg3; /sbin/modprobe e1000;
-	/sbin/modprobe --ignore-install bonding
+softdep bonding pre: tg3 e1000
 
 	This will load tg3 and e1000 modules before loading the bonding one.
 Full documentation on this can be found in the modprobe.d and modprobe
--- lnx-33.orig/Documentation/sound/oss/AudioExcelDSP16
+++ lnx-33/Documentation/sound/oss/AudioExcelDSP16
@@ -54,8 +54,8 @@ Loading MSS and OPL3 needs to pre load t
 the sound card. Installation dependencies must be written in configuration
 files under /etc/modprobe.d/ directory:
 
-install ad1848 /sbin/modprobe aedsp16 && /sbin/modprobe -i ad1848
-install opl3 /sbin/modprobe aedsp16 && /sbin/modprobe -i opl3
+softdep ad1848 pre: aedsp16
+softdep opl3 pre: aedsp16
 
 Then you must load the sound modules stack in this order:
 sound -> aedsp16 -> [ ad1848, opl3 ]
--- lnx-33.orig/Documentation/sound/oss/README.modules
+++ lnx-33/Documentation/sound/oss/README.modules
@@ -36,7 +36,7 @@ options adlib_card io=0x388     # FM syn
  Alternatively, if you have compiled in kernel level ISAPnP support:
 
 alias char-major-14 sb
-post-install sb /sbin/modprobe "-k" "adlib_card"
+softdep sb post: adlib_card
 options adlib_card io=0x388
 
   The effect of this is that the sound driver and all necessary bits and
--
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