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Remove a unnecessary level of indenting in some areas of the reference
section. No text changes.
Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <01f1a407e92b92d9f8614bd34882956694bab123.1710750972.git.linux@leemhuis.info>
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A bunch of minor fixes and improvements and two other things:
- Explain the 'v' version prefix when it's first used, but drop it
everywhere in the text for consistency. Also drop single quotes around
a few version numbers.
- Point out that testing a stable/longterm kernel only makes sense if
the series is still supported.
Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <f13d203d5975419608996300992eaa2e4fcc2dc1.1710750972.git.linux@leemhuis.info>
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Instruct readers to check the taint flag, as the reason why it's set
might directly or indirectly cause the bug or interfere with testing.
Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <8fcaffa8e85f36d51178d61061355c3c8bc85a0f.1710750972.git.linux@leemhuis.info>
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These changes among others ensure modules will be installed when
/sbin/installkernel is missing. Furthermore describe better what tasks
the script ideally performs so that users can more easily check if those
have been taken care of. In addition to that point to the distro's
documentation for further details on installing kernels manually.
Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <e392bd5eb12654bed635f32b24304a712b0c67d1.1710750972.git.linux@leemhuis.info>
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Assorted changes for the recently added document.
Improvements:
* Add instructions for installing required software on Arch Linux.
Fixes:
* Move a 'git remote add -t master stable [...]' from a totally wrong
to the right place.
* Fix two anchors.
* Add two required packages to the openSUSE install instructions.
Fine tuning:
* Improve the reference section about downloading Linux mainline sources
to make it more obvious that those are alternatives.
* Include the full instructions for git bundles to ensure the remote
gets the right name; that way the text also works stand alone.
* Install ncurses and qt headers for use of menuconfig and xconfig by
default, but tell users that they are free to omit them.
* Mention ahead of time which version number are meant as example in
commands used during the step-by-step guide.
* Mention that 'kernel-install remove' might do a incomplete job.
Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <6592c9ef4244faa484b4113f088dbc1beca61015.1709716794.git.linux@leemhuis.info>
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Add a second document on bisecting regressions explaining the whole
process from beginning to end -- while also describing how to validate
if a problem is still present in mainline. This "two in one" approach
is possible, as checking whenever a bug is in mainline is one of the
first steps before performing a bisection anyway and thus needs to be
described. Due to this approach the text also works quite nicely in
conjunction with Documentation/admin-guide/reporting-issues.rst, as it
covers all typical cases where users will need to build a kernel in
exactly the same order.
The text targets users that normally run kernels from their Linux
distributor who might never have compiled their own kernel.
This aim is why the first kernel built while following this guide is
generated from the latest mainline codebase. This will rule out that the
regression (a) was fixed already and (b) is caused by config change a
vendor distributor performed; checking mainline will furthermore (c)
determine if the issue is something that needs to be reported to the
regular developers or the stable team (this is needed even when readers
bisect within a stable series).
Only then are readers instructed to build their own variant of the
'good' kernel to validate the trimmed .config file created during early
in the guide, as performing a bisection with a broken one would be a
waste of time. There is a small downside of this order: readers might
have to go back to testing mainline, if it turns out there is a problem
with their .config. But that should be rare -- and if the regression was
already fixed readers might not get to this point anyway. Hence in the
end this order should mean that readers built less kernels overall.
This sequence allows the text to easily cover the "check if a bug is
present in the upstream kernel" case while only making things a tiny bit
more complicated.
The text tries to prevent readers from running into many mistakes users
are known to frequently make. The steps required for this might look
superfluous for people that are already familiar with bisections -- but
anyone with that knowledge should be able to adapt the instructions to
their use-case or will not need this text at all.
Style and structure of the text match the one
Documentation/admin-guide/quickly-build-trimmed-linux.rst uses. Quite a
few paragraphs are even copied from there and not changed at all or only
slightly. This will complicate maintenance, as some future changes to
one of these documents will have to be replicated in the other. But this
is the lesser evil: solutions like "sending readers from one document
over to the other" or "extracting the common parts into a separate
document" might work in other cases, but would be too confusing here
given the topic and the target audience.
Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info>
[jc: Undo spurious removal of subsection header line]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <02b084a06de4ad61ac4ecd92b9265d4df4d03d71.1709282441.git.linux@leemhuis.info>
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