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| author | Johannes Berg <johannes.berg@intel.com> | 2024-08-27 16:05:01 +0200 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2024-09-12 20:46:23 +0200 |
| commit | 381d2f95c8aa575d5d42bf1fe0ea9a70c4bec0cf (patch) | |
| tree | 05ed7405b71a53f33160a446d2b416f39dd1a2f3 /Documentation/livepatch/livepatch.rst | |
| parent | um: Remove outdated asm/sysrq.h header (diff) | |
| download | linux-381d2f95c8aa575d5d42bf1fe0ea9a70c4bec0cf.tar.xz linux-381d2f95c8aa575d5d42bf1fe0ea9a70c4bec0cf.zip | |
um: fix time-travel syscall scheduling hack
The schedule() call there really never did anything at
least since the introduction of the EEVDF scheduler,
but now I found a case where we permanently hang in a
loop of -ERESTARTNOINTR (due to locking.) Work around
it by making any syscalls with error return take time
(and then schedule after) so we cannot hang in such a
loop forever.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'Documentation/livepatch/livepatch.rst')
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