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Filename Latest commit message Latest commit date
Miroslav Benes cba82dea30 livepatch: Send a fake signal periodically
An administrator may send a fake signal to all remaining blocking tasks
of a running transition by writing to
/sys/kernel/livepatch/<patch>/signal attribute. Let's do it
automatically after 15 seconds. The timeout is chosen deliberately. It
gives the tasks enough time to transition themselves.

Theoretically, sending it once should be more than enough. However,
every task must get outside of a patched function to be successfully
transitioned. It could prove not to be simple and resending could be
helpful in that case.

A new workqueue job could be a cleaner solution to achieve it, but it
could also introduce deadlocks and cause more headaches with
synchronization and cancelling.

[jkosina@suse.cz: removed added newline]
Signed-off-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2019-01-16 22:09:09 +01:00
arch It appears that the zero-day bot did find a bug in my sh build. 2019-01-05 14:08:00 -08:00
block for-4.21/block-20190102 2019-01-02 18:49:58 -08:00
certs
crypto Kconfig updates for v4.21 2018-12-29 13:03:29 -08:00
Documentation livepatch: Send a fake signal periodically 2019-01-16 22:09:09 +01:00
drivers Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2019-01-05 16:07:28 -08:00
firmware firmware: refactor firmware/Makefile 2018-12-23 10:10:32 +09:00
fs three fixes, one for stable, one adds the (most secure) SMB3.1.1 dialect to default list requested 2019-01-05 14:05:06 -08:00
include livepatch: Add atomic replace 2019-01-11 20:51:24 +01:00
init Merge branch 'mount.part1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-01-05 13:25:58 -08:00
ipc
kernel livepatch: Send a fake signal periodically 2019-01-16 22:09:09 +01:00
lib selftests/livepatch: introduce tests 2019-01-11 20:51:24 +01:00
LICENSES
mm Merge branch 'akpm' (patches from Andrew) 2019-01-05 09:16:18 -08:00
net A fairly quiet round: a couple of messenger performance improvements 2019-01-05 13:58:08 -08:00
samples livepatch: Simplify API by removing registration step 2019-01-11 20:51:24 +01:00
scripts Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-01-05 13:18:59 -08:00
security Merge branch 'mount.part1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-01-05 13:25:58 -08:00
sound Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
tools selftests/livepatch: introduce tests 2019-01-11 20:51:24 +01:00
usr user/Makefile: Fix typo and capitalization in comment section 2018-12-11 00:18:03 +09:00
virt Merge branch 'akpm' (patches from Andrew) 2019-01-05 09:16:18 -08:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore kbuild: Add support for DT binding schema checks 2018-12-13 09:41:32 -06:00
.mailmap A few early MIPS fixes for 4.21: 2019-01-05 12:48:25 -08:00
COPYING
CREDITS
Kbuild kbuild: remove unused cmd_gentimeconst 2018-12-25 00:10:30 +09:00
Kconfig
MAINTAINERS selftests/livepatch: introduce tests 2019-01-11 20:51:24 +01:00
Makefile Kbuild updates for v4.21 2018-12-29 12:03:17 -08:00
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.