TononixOS/ubports_kernel_google_msm
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Merge branch 'config' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl

Browse Source 
* 'config' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl:
  BKL: That's all, folks
  fs/locks.c: Remove stale FIXME left over from BKL conversion
  ipx: remove the BKL
  appletalk: remove the BKL
  x25: remove the BKL
  ufs: remove the BKL
  hpfs: remove the BKL
  drivers: remove extraneous includes of smp_lock.h
  tracing: don't trace the BKL
  adfs: remove the big kernel lock
This commit is contained in:
Linus Torvalds
2011-03-16 17:21:00 -07:00
parent 7a6362800c 4ba8216cd9
commit f74b944419
55 changed files with 220 additions and 619 deletions
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9
include/linux/hardirq.h
View File

@@ -93,13 +93,6 @@
*/
#define in_nmi() (preempt_count() & NMI_MASK)
#if defined(CONFIG_PREEMPT) && defined(CONFIG_BKL)
# include <linux/sched.h>
# define PREEMPT_INATOMIC_BASE (current->lock_depth >= 0)
#else
# define PREEMPT_INATOMIC_BASE 0
#endif
#if defined(CONFIG_PREEMPT)
# define PREEMPT_CHECK_OFFSET 1
#else
@@ -113,7 +106,7 @@
* used in the general case to determine whether sleeping is possible.
* Do not use in_atomic() in driver code.
*/
#define in_atomic() ((preempt_count() & ~PREEMPT_ACTIVE) != PREEMPT_INATOMIC_BASE)
#define in_atomic() ((preempt_count() & ~PREEMPT_ACTIVE) != 0)
/*
* Check whether we were atomic before we did preempt_disable():

65
include/linux/smp_lock.h
View File

@@ -1,65 +0,0 @@
#ifndef __LINUX_SMPLOCK_H
#define __LINUX_SMPLOCK_H
#ifdef CONFIG_LOCK_KERNEL
#include <linux/sched.h>
extern int __lockfunc __reacquire_kernel_lock(void);
extern void __lockfunc __release_kernel_lock(void);
/*
* Release/re-acquire global kernel lock for the scheduler
*/
#define release_kernel_lock(tsk) do { \
if (unlikely((tsk)->lock_depth >= 0)) \
__release_kernel_lock(); \
} while (0)
static inline int reacquire_kernel_lock(struct task_struct *task)
{
if (unlikely(task->lock_depth >= 0))
return __reacquire_kernel_lock();
return 0;
}
extern void __lockfunc
_lock_kernel(const char *func, const char *file, int line)
__acquires(kernel_lock);
extern void __lockfunc
_unlock_kernel(const char *func, const char *file, int line)
__releases(kernel_lock);
#define lock_kernel() do { \
_lock_kernel(__func__, __FILE__, __LINE__); \
} while (0)
#define unlock_kernel() do { \
_unlock_kernel(__func__, __FILE__, __LINE__); \
} while (0)
/*
* Various legacy drivers don't really need the BKL in a specific
* function, but they *do* need to know that the BKL became available.
* This function just avoids wrapping a bunch of lock/unlock pairs
* around code which doesn't really need it.
*/
static inline void cycle_kernel_lock(void)
{
lock_kernel();
unlock_kernel();
}
#else
#ifdef CONFIG_BKL /* provoke build bug if not set */
#define lock_kernel()
#define unlock_kernel()
#define cycle_kernel_lock() do { } while(0)
#endif /* CONFIG_BKL */
#define release_kernel_lock(task) do { } while(0)
#define reacquire_kernel_lock(task) 0
#endif /* CONFIG_LOCK_KERNEL */
#endif /* __LINUX_SMPLOCK_H */