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https://github.com/edk2-porting/linux-next.git
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6478d8800b
remove the !PREEMPT_BKL code. this removes 160 lines of legacy code. Signed-off-by: Ingo Molnar <mingo@elte.hu>
40 lines
1020 B
C
40 lines
1020 B
C
#ifndef __LINUX_SMPLOCK_H
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#define __LINUX_SMPLOCK_H
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#ifdef CONFIG_LOCK_KERNEL
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#include <linux/sched.h>
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#define kernel_locked() (current->lock_depth >= 0)
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extern int __lockfunc __reacquire_kernel_lock(void);
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extern void __lockfunc __release_kernel_lock(void);
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/*
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* Release/re-acquire global kernel lock for the scheduler
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*/
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#define release_kernel_lock(tsk) do { \
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if (unlikely((tsk)->lock_depth >= 0)) \
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__release_kernel_lock(); \
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} while (0)
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static inline int reacquire_kernel_lock(struct task_struct *task)
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{
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if (unlikely(task->lock_depth >= 0))
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return __reacquire_kernel_lock();
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return 0;
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}
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extern void __lockfunc lock_kernel(void) __acquires(kernel_lock);
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extern void __lockfunc unlock_kernel(void) __releases(kernel_lock);
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#else
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#define lock_kernel() do { } while(0)
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#define unlock_kernel() do { } while(0)
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#define release_kernel_lock(task) do { } while(0)
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#define reacquire_kernel_lock(task) 0
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#define kernel_locked() 1
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#endif /* CONFIG_LOCK_KERNEL */
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#endif /* __LINUX_SMPLOCK_H */
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