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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching

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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
This commit is contained in:
Linus Torvalds 2018-01-31 13:02:18 -08:00
commit e1c70f3238
13 changed files with 226 additions and 186 deletions
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4
kernel/signal.c
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@ -40,6 +40,7 @@
#include <linux/cn_proc.h>
#include <linux/compiler.h>
#include <linux/posix-timers.h>
#include <linux/livepatch.h>
#define CREATE_TRACE_POINTS
#include <trace/events/signal.h>
@ -165,7 +166,8 @@ void recalc_sigpending_and_wake(struct task_struct *t)
void recalc_sigpending(void)
{
if (!recalc_sigpending_tsk(current) && !freezing(current))
if (!recalc_sigpending_tsk(current) && !freezing(current) &&
!klp_patch_pending(current))
clear_thread_flag(TIF_SIGPENDING);
}