From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Fri, 1 Jun 2012 01:47:30 +0000 (-0700)
Subject: Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=3.4.0-09547-gfb21aff;p=linux-beck.git

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

Pull second pile of signal handling patches from Al Viro:
 "This one is just task_work_add() series + remaining prereqs for it.

  There probably will be another pull request from that tree this
  cycle - at least for helpers, to get them out of the way for per-arch
  fixes remaining in the tree."

Fix trivial conflict in kernel/irq/manage.c: the merge of Andrew's pile
had brought in commit 97fd75b7b8e0 ("kernel/irq/manage.c: use the
pr_foo() infrastructure to prefix printks") which changed one of the
pr_err() calls that this merge moves around.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal:
  keys: kill task_struct->replacement_session_keyring
  keys: kill the dummy key_replace_session_keyring()
  keys: change keyctl_session_to_parent() to use task_work_add()
  genirq: reimplement exit_irq_thread() hook via task_work_add()
  task_work_add: generic process-context callbacks
  avr32: missed _TIF_NOTIFY_RESUME on one of do_notify_resume callers
  parisc: need to check NOTIFY_RESUME when exiting from syscall
  move key_repace_session_keyring() into tracehook_notify_resume()
  TIF_NOTIFY_RESUME is defined on all targets now
---

fb21affa49204acd409328415b49bfe90136653c
diff --cc kernel/irq/manage.c
index 7c475cd3f6e6,4d1f8f897414..ea0c6c2ae6f7
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@@ -775,6 -774,33 +776,33 @@@ static void wake_threads_waitq(struct i
  		wake_up(&desc->wait_for_threads);
  }
  
+ static void irq_thread_dtor(struct task_work *unused)
+ {
+ 	struct task_struct *tsk = current;
+ 	struct irq_desc *desc;
+ 	struct irqaction *action;
+ 
+ 	if (WARN_ON_ONCE(!(current->flags & PF_EXITING)))
+ 		return;
+ 
+ 	action = kthread_data(tsk);
+ 
 -	pr_err("genirq: exiting task \"%s\" (%d) is an active IRQ thread (irq %d)\n",
++	pr_err("exiting task \"%s\" (%d) is an active IRQ thread (irq %d)\n",
+ 	       tsk->comm ? tsk->comm : "", tsk->pid, action->irq);
+ 
+ 
+ 	desc = irq_to_desc(action->irq);
+ 	/*
+ 	 * If IRQTF_RUNTHREAD is set, we need to decrement
+ 	 * desc->threads_active and wake possible waiters.
+ 	 */
+ 	if (test_and_clear_bit(IRQTF_RUNTHREAD, &action->thread_flags))
+ 		wake_threads_waitq(desc);
+ 
+ 	/* Prevent a stale desc->threads_oneshot */
+ 	irq_finalize_oneshot(desc, action);
+ }
+ 
  /*
   * Interrupt handler thread
   */