Commit d902db1e authored by Frederic Weisbecker's avatar Frederic Weisbecker
Browse files

sched: Generalize sleep inside spinlock detection 



The sleeping inside spinlock detection is actually used
for more general sleeping inside atomic sections
debugging: preemption disabled, rcu read side critical
sections, interrupts, interrupt disabled, etc...

Change the name of the config and its help section to
reflect its more general role.

Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
Acked-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: default avatarRandy Dunlap <randy.dunlap@oracle.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>
parent e8f7c70f

Documentation/DocBook/kernel-hacking.tmpl

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@@ -409,7 +409,7 @@ cond_resched(); /* Will sleep */ 


  <para>

   You should always compile your kernel

   <symbol>CONFIG_DEBUG_SPINLOCK_SLEEP</symbol> on, and it will warn

   <symbol>CONFIG_DEBUG_ATOMIC_SLEEP</symbol> on, and it will warn

   you if you break these rules.  If you <emphasis>do</emphasis> break

   the rules, you will eventually lock up your box.

  </para>

Documentation/SubmitChecklist

+1 −1
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@@ -53,7 +53,7 @@ kernel patches. 


12: Has been tested with CONFIG_PREEMPT, CONFIG_DEBUG_PREEMPT,

    CONFIG_DEBUG_SLAB, CONFIG_DEBUG_PAGEALLOC, CONFIG_DEBUG_MUTEXES,

    CONFIG_DEBUG_SPINLOCK, CONFIG_DEBUG_SPINLOCK_SLEEP all simultaneously

    CONFIG_DEBUG_SPINLOCK, CONFIG_DEBUG_ATOMIC_SLEEP all simultaneously

    enabled.



13: Has been build- and runtime tested with and without CONFIG_SMP and

Documentation/development-process/4.Coding

+1 −1
Original line number Diff line number Diff line
@@ -244,7 +244,7 @@ testing purposes. In particular, you should turn on: 
 - DEBUG_SLAB can find a variety of memory allocation and use errors; it

   should be used on most development kernels.



 - DEBUG_SPINLOCK, DEBUG_SPINLOCK_SLEEP, and DEBUG_MUTEXES will find a

 - DEBUG_SPINLOCK, DEBUG_ATOMIC_SLEEP, and DEBUG_MUTEXES will find a

   number of common locking errors.



There are quite a few other debugging options, some of which will be

Documentation/ja_JP/SubmitChecklist

+1 −1
Original line number Diff line number Diff line
@@ -68,7 +68,7 @@ Linux カーネルパッチ投稿者向けチェックリスト 


12: CONFIG_PREEMPT, CONFIG_DEBUG_PREEMPT, CONFIG_DEBUG_SLAB,

    CONFIG_DEBUG_PAGEALLOC, CONFIG_DEBUG_MUTEXES, CONFIG_DEBUG_SPINLOCK,

    CONFIG_DEBUG_SPINLOCK_SLEEP これら全てを同時に有効にして動作確認を

    CONFIG_DEBUG_ATOMIC_SLEEP これら全てを同時に有効にして動作確認を

    行ってください。



13: CONFIG_SMP, CONFIG_PREEMPT を有効にした場合と無効にした場合の両方で

Documentation/zh_CN/SubmitChecklist

+1 −1
Original line number Diff line number Diff line
@@ -67,7 +67,7 @@ Linux 


12：已经通过CONFIG_PREEMPT, CONFIG_DEBUG_PREEMPT,

    CONFIG_DEBUG_SLAB, CONFIG_DEBUG_PAGEALLOC, CONFIG_DEBUG_MUTEXES,

    CONFIG_DEBUG_SPINLOCK, CONFIG_DEBUG_SPINLOCK_SLEEP测试，并且同时都

    CONFIG_DEBUG_SPINLOCK, CONFIG_DEBUG_ATOMIC_SLEEP测试，并且同时都

    使能。



13：已经都构建并且使用或者不使用 CONFIG_SMP 和 CONFIG_PREEMPT测试执行时间。

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