Localpatch (Tutorial) - Revision history

Oleg at 03:20, 18 September 2012

2012-09-18T03:20:50Z

2012-02-08T15:06:24Z

‎How it works: patch path fix

2011-08-09T12:48:39Z

‎Motivation: add link to 2.6.39.4 ChangeLog

2011-08-09T12:46:47Z

‎Motivation: vanilla 2.6.39.4 has this patch now.

2011-08-09T12:45:44Z

add reference to forum post

2011-07-24T09:06:17Z

‎Introduction: remove -rN

2011-07-24T06:58:00Z

‎How it works

2011-07-24T06:56:41Z

Add motivation

2011-07-24T06:51:25Z

‎Introduction

2011-07-23T19:31:28Z

@@ Line 15: / Line 15: @@
 === How it works ===
+{{fancyimportant|localpatch feature removed form recent portage, available in foobashrc.}}
 Reviewing the <code>/usr/portdir/sys-kernel/gentoo-sources</code> ebuilds reveals that they inherit the <code>kernel-2.eclass</code>. Looking at <code>/usr/portage/eclass/kernel-2.eclass</code>, I noticed that it included a reference to <code>epatch_user</code> in the function <code>kernel-2_src_unpack()</code>.

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 For my particular use case, I added the radeon kms patch titled [http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=498c555f56a02ec1059bc150cde84411ba0ac010 drm/radeon: fix oops in ttm reserve when pageflipping (v2)]:
-<code>/etc/portage/sys-kernel/gentoo-sources-2.6.39-r3/linux-2.6.git-498c555f56a02ec1059bc150cde84411ba0ac010.patch</code>
+<code>/etc/portage/patches/sys-kernel/gentoo-sources-2.6.39-r3/linux-2.6.git-498c555f56a02ec1059bc150cde84411ba0ac010.patch</code>
 == Testing it ==

@@ Line 12: / Line 12: @@
 I asked in #radeon on the FreeNode IRC network and Dave Airlie was kind enough to link me to a commit that was merged in linux-3.0. However, as I am using 2.6.39-r3 w/aufs2 (which was not available for 3.0 at the time of this writing), I decided to apply the patch myself.
-UPDATE: The patch has landed upstream in vanilla 2.6.39.4 .
+'''UPDATE:''' The patch has landed upstream in [http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39.4 the vanilla linux-2.6.39.4 kernel].
 === How it works ===

← Older revision		Revision as of 12:46, 9 August 2011
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	I asked in #radeon on the FreeNode IRC network and Dave Airlie was kind enough to link me to a commit that was merged in linux-3.0. However, as I am using 2.6.39-r3 w/aufs2 (which was not available for 3.0 at the time of this writing), I decided to apply the patch myself.		I asked in #radeon on the FreeNode IRC network and Dave Airlie was kind enough to link me to a commit that was merged in linux-3.0. However, as I am using 2.6.39-r3 w/aufs2 (which was not available for 3.0 at the time of this writing), I decided to apply the patch myself.
		+
		+	UPDATE: The patch has landed upstream in vanilla 2.6.39.4 .

	=== How it works ===		=== How it works ===

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 Et voilà -- a cleanly patched kernel.
 [[Category:Tutorial]]
 [[Category:Portage]]

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 == Introduction ==
-'''''Localpatch''''' (known in gentoo as '''''epatch_user''''') is a feature that lets you, the user, add patches to official ebuilds without having to maintain the ebuild in question in a local overlay, thus avoiding the maintenance overhead associated with keeping your local overlay in sync with -rN version bumps.
+'''''Localpatch''''' (known in gentoo as '''''epatch_user''''') is a feature that lets you, the user, add patches to official ebuilds without having to maintain the ebuild in question in a local overlay, thus avoiding the maintenance overhead associated with keeping your local overlay in sync with revision and version bumps.
 Ebuilds can use this feature by calling <code>epatch_user</code> in their <code>src_prepare ()</code> function (preferrably after their own patching).

← Older revision		Revision as of 06:58, 24 July 2011
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	<code>/etc/portage/sys-kernel/gentoo-sources-2.6.39-r3/linux-2.6.git-498c555f56a02ec1059bc150cde84411ba0ac010.patch</code>		<code>/etc/portage/sys-kernel/gentoo-sources-2.6.39-r3/linux-2.6.git-498c555f56a02ec1059bc150cde84411ba0ac010.patch</code>
−
−	~~For the record, Dave Airlie was kind enough to mention that this patch was merged in linux-3.0-rc3 .~~

	== Testing it ==		== Testing it ==

← Older revision		Revision as of 06:56, 24 July 2011
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	For future reference, I'm going to document here how I used <code>epatch_user</code> to add a patch to <code>sys-kernel/gentoo-sources</code>.		For future reference, I'm going to document here how I used <code>epatch_user</code> to add a patch to <code>sys-kernel/gentoo-sources</code>.
		+
		+	=== Motivation ===
		+
		+	I use the Open Source AMD/ATi Radeon KMS drivers with my funtoo boxes and was seeing random kernel OOPSes with Xorg and 3D applications (the flurry 3D screensaver and games mainly).
		+
		+	I asked in #radeon on the FreeNode IRC network and Dave Airlie was kind enough to link me to a commit that was merged in linux-3.0. However, as I am using 2.6.39-r3 w/aufs2 (which was not available for 3.0 at the time of this writing), I decided to apply the patch myself.

	=== How it works ===		=== How it works ===