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authorEmil Velikov <[email protected]>2017-02-13 19:23:38 +0000
committerEmil Velikov <[email protected]>2017-02-20 18:21:22 +0000
commitd7e0ff0e2b2e501e58b53464040af7c39688263a (patch)
tree0fee7cfe75ae61127d51ddee6597a624aee5660a
parentaf9a4d900527f4c1efeec7c4eb2cb8a602f9a9cb (diff)
docs/submittingpatches.html: rework the #criteria section
Reword the section to focus on what is allowed, using a more brief, yet descriptive wording. Signed-off-by: Emil Velikov <[email protected]> Reviewed-by: Nicolai Hähnle <[email protected]>
-rw-r--r--docs/submittingpatches.html120
1 files changed, 46 insertions, 74 deletions
diff --git a/docs/submittingpatches.html b/docs/submittingpatches.html
index f8380b0a542..ef5be716d93 100644
--- a/docs/submittingpatches.html
+++ b/docs/submittingpatches.html
@@ -259,15 +259,53 @@ Thus, drop the line <strong>only</strong> if you want to cancel the nomination.
<h2 id="criteria">Criteria for accepting patches to the stable branch</h2>
Mesa has a designated release manager for each stable branch, and the release
-manager is the only developer that should be pushing changes to these
-branches. Everyone else should simply nominate patches using the mechanism
-described above.
+manager is the only developer that should be pushing changes to these branches.
+Everyone else should nominate patches using the mechanism described above.
-The stable-release manager will work with the list of nominated patches, and
-for each patch that meets the criteria below will cherry-pick the patch with:
-<code>git cherry-pick -x &lt;commit&gt;</code>. The <code>-x</code> option is
-important so that the picked patch references the commit ID of the original
-patch.
+The following rules define which patches are accepted and which are not. The
+stable-release manager is also given broad discretion in rejecting patches
+that have been nominated.
+
+<ul>
+ <li>Patch must conform with the <a href="#guidelines">Basic guidelines</a></li>
+
+ <li>Patch must have landed in master first. In case where the original
+ patch is too large and/or otherwise contradicts with the rules set within, a
+ backport is appropriate.</li>
+
+ <li>It must not introduce a regression - be that build or runtime wise.
+
+ Note: If the regression is due to faulty piglit/dEQP/CTS/other test the
+ latter must be fixed first. A reference to the offending test(s) and
+ respective fix(es) should be provided in the nominated patch.</li>
+
+ <li>Patch cannot be larger than 100 lines.</li>
+
+ <li>Patches that move code around with no functional change should be
+ rejected.</li>
+
+ <li>Patch must be a bug fix and not a new feature.
+
+ Note: An exception to this rule, are hardware-enabling "features". For
+ example, backports of new code to support a newly-developed hardware product
+ can be accepted if they can be reasonably determined not to have effects on
+ other hardware.</li>
+
+ <li>Patch must be reviewed, For example, the commit message has Reviewed-by,
+ Signed-off-by, or Tested-by tags from someone but the author.</li>
+
+ <li>Performance patches are considered only if they provide information
+ about the hardware, program in question and observed improvement. Use numbers
+ to represent your measurements.</li>
+</ul>
+
+If the patch complies with the rules it will be
+<a href="releasing.html#pickntest">cherry-picked</a>. Alternatively the release
+manager will reply to the patch in question stating why the patch has been
+rejected or would request a backport.
+
+A summary of all the picked/rejected patches will be presented in the
+<a href="releasing.html#prerelease">pre-release</a> announcement.
The stable-release manager may at times need to force-push changes to the
stable branches, for example, to drop a previously-picked patch that was later
@@ -275,72 +313,6 @@ identified as causing a regression). These force-pushes may cause changes to
be lost from the stable branch if developers push things directly. Consider
yourself warned.
-The stable-release manager is also given broad discretion in rejecting patches
-that have been nominated for the stable branch. The most basic rule is that
-the stable branch is for bug fixes only, (no new features, no
-regressions). Here is a non-exhaustive list of some reasons that a patch may
-be rejected:
-
-<ul>
- <li>Patch introduces a regression. Any reported build breakage or other
- regression caused by a particular patch, (game no longer works, piglit test
- changes from PASS to FAIL), is justification for rejecting a patch.</li>
-
- <li>Patch is too large, (say, larger than 100 lines)</li>
-
- <li>Patch is not a fix. For example, a commit that moves code around with no
- functional change should be rejected.</li>
-
- <li>Patch fix is not clearly described. For example, a commit message
- of only a single line, no description of the bug, no mention of bugzilla,
- etc.</li>
-
- <li>Patch has not obviously been reviewed, For example, the commit message
- has no Reviewed-by, Signed-off-by, nor Tested-by tags from anyone but the
- author.</li>
-
- <li>Patch has not already been merged to the master branch. As a rule, bug
- fixes should never be applied first to a stable branch. Patches should land
- first on the master branch and then be cherry-picked to a stable
- branch. (This is to avoid future releases causing regressions if the patch
- is not also applied to master.) The only things that might look like
- exceptions would be backports of patches from master that happen to look
- significantly different.</li>
-
- <li>Patch depends on too many other patches. Ideally, all stable-branch
- patches should be self-contained. It sometimes occurs that a single, logical
- bug-fix occurs as two separate patches on master, (such as an original
- patch, then a subsequent fix-up to that patch). In such a case, these two
- patches should be squashed into a single, self-contained patch for the
- stable branch. (Of course, if the squashing makes the patch too large, then
- that could be a reason to reject the patch.)</li>
-
- <li>Patch includes new feature development, not bug fixes. New OpenGL
- features, extensions, etc. should be applied to Mesa master and included in
- the next major release. Stable releases are intended only for bug fixes.
-
- Note: As an exception to this rule, the stable-release manager may accept
- hardware-enabling "features". For example, backports of new code to support
- a newly-developed hardware product can be accepted if they can be reasonably
- determined not to have effects on other hardware.</li>
-
- <li>Patch is a performance optimization. As a rule, performance patches are
- not candidates for the stable branch. The only exception might be a case
- where an application's performance was recently severely impacted so as to
- become unusable. The fix for this performance regression could then be
- considered for a stable branch. The optimization must also be
- non-controversial and the patches still need to meet the other criteria of
- being simple and self-contained</li>
-
- <li>Patch introduces a new failure mode (such as an assert). While the new
- assert might technically be correct, for example to make Mesa more
- conformant, this is not the kind of "bug fix" we want in a stable
- release. The potential problem here is that an OpenGL program that was
- previously working, (even if technically non-compliant with the
- specification), could stop working after this patch. So that would be a
- regression that is unacceptable for the stable branch.</li>
-</ul>
-
<h2 id="gittips">Git tips</h2>
<ul>