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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-01-31 13:02:18 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-01-31 13:02:18 -0800 |
| commit | e1c70f32386c4984ed8ca1a7aedb9bbff9ed3414 (patch) | |
| tree | 09a9092c1ea56b1d9c218a77b2510036b509f225 /Documentation/ABI | |
| parent | 183b6366cf473ff0e706a6751adc082faa44843d (diff) | |
| parent | d05b695c25bf0d704c74e0e1375de893531b9424 (diff) | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching
Pull livepatching updates from Jiri Kosina:
- handle 'infinitely'-long sleeping tasks, from Miroslav Benes
- remove 'immediate' feature, as it turns out it doesn't provide the
originally expected semantics, and brings more issues than value
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching:
livepatch: add locking to force and signal functions
livepatch: Remove immediate feature
livepatch: force transition to finish
livepatch: send a fake signal to all blocking tasks
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-kernel-livepatch | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-kernel-livepatch b/Documentation/ABI/testing/sysfs-kernel-livepatch index d5d39748382f..dac7e1e62a8b 100644 --- a/Documentation/ABI/testing/sysfs-kernel-livepatch +++ b/Documentation/ABI/testing/sysfs-kernel-livepatch @@ -33,6 +33,32 @@ Description: An attribute which indicates whether the patch is currently in transition. +What: /sys/kernel/livepatch/<patch>/signal +Date: Nov 2017 +KernelVersion: 4.15.0 +Contact: live-patching@vger.kernel.org +Description: + A writable attribute that allows administrator to affect the + course of an existing transition. Writing 1 sends a fake + signal to all remaining blocking tasks. The fake signal + means that no proper signal is delivered (there is no data in + signal pending structures). Tasks are interrupted or woken up, + and forced to change their patched state. + +What: /sys/kernel/livepatch/<patch>/force +Date: Nov 2017 +KernelVersion: 4.15.0 +Contact: live-patching@vger.kernel.org +Description: + A writable attribute that allows administrator to affect the + course of an existing transition. Writing 1 clears + TIF_PATCH_PENDING flag of all tasks and thus forces the tasks to + the patched or unpatched state. Administrator should not + use this feature without a clearance from a patch + distributor. Removal (rmmod) of patch modules is permanently + disabled when the feature is used. See + Documentation/livepatch/livepatch.txt for more information. + What: /sys/kernel/livepatch/<patch>/<object> Date: Nov 2014 KernelVersion: 3.19.0 |