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...*/ + struct { + u8 lock; /* Lock bit */ + u8 wait; /* Waiting bit */ + u16 qcode; /* Queue code */ + }; + u16 lock_wait; /* Lock and wait bits */ }; #define queue_spin_unlock queue_spin_unlock diff --git a/include/asm-generic/qspinlock_types.h b/include/asm-generic/qspinlock_types.h index df981d0..3a02a9e 100644 --- a/include/asm-generic/qspinlock_types.h +++ b/include/asm-generic/qspinlock_types.h @@ -48,7 +48,13 @@ typedef struct qspinlock { atomic_t qlcode; /* Lock + queue code */ } arch_spinlock_t; -#define _QCODE_OFFSET 8 +#if CONFIG_NR_CPUS >= (1 << 14) +# define _Q_MAN...

...*/ + struct { + u8 lock; /* Lock bit */ + u8 wait; /* Waiting bit */ + u16 qcode; /* Queue code */ + }; + u16 lock_wait; /* Lock and wait bits */ }; #define queue_spin_unlock queue_spin_unlock diff --git a/include/asm-generic/qspinlock_types.h b/include/asm-generic/qspinlock_types.h index df981d0..3a02a9e 100644 --- a/include/asm-generic/qspinlock_types.h +++ b/include/asm-generic/qspinlock_types.h @@ -48,7 +48,13 @@ typedef struct qspinlock { atomic_t qlcode; /* Lock + queue code */ } arch_spinlock_t; -#define _QCODE_OFFSET 8 +#if CONFIG_NR_CPUS >= (1 << 14) +# define _Q_MAN...

...) queue_spin_trylock(l) +#define arch_spin_unlock(l) queue_spin_unlock(l) +#define arch_spin_lock_flags(l, f) queue_spin_lock(l) + +#endif /* __ASM_GENERIC_QSPINLOCK_H */ diff --git a/include/asm-generic/qspinlock_types.h b/include/asm-generic/qspinlock_types.h new file mode 100644 index 0000000..df981d0 --- /dev/null +++ b/include/asm-generic/qspinlock_types.h @@ -0,0 +1,55 @@ +/* + * Queue spinlock + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2...

...) queue_spin_trylock(l) +#define arch_spin_unlock(l) queue_spin_unlock(l) +#define arch_spin_lock_flags(l, f) queue_spin_lock(l) + +#endif /* __ASM_GENERIC_QSPINLOCK_H */ diff --git a/include/asm-generic/qspinlock_types.h b/include/asm-generic/qspinlock_types.h new file mode 100644 index 0000000..df981d0 --- /dev/null +++ b/include/asm-generic/qspinlock_types.h @@ -0,0 +1,55 @@ +/* + * Queue spinlock + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2...

v4->v5: - Move the optimized 2-task contending code to the generic file to enable more architectures to use it without code duplication. - Address some of the style-related comments by PeterZ. - Allow the use of unfair queue spinlock in a real para-virtualized execution environment. - Add para-virtualization support to the qspinlock code by ensuring that the lock holder and queue

v4->v5: - Move the optimized 2-task contending code to the generic file to enable more architectures to use it without code duplication. - Address some of the style-related comments by PeterZ. - Allow the use of unfair queue spinlock in a real para-virtualized execution environment. - Add para-virtualization support to the qspinlock code by ensuring that the lock holder and queue

v5->v6: - Change the optimized 2-task contending code to make it fairer at the expense of a bit of performance. - Add a patch to support unfair queue spinlock for Xen. - Modify the PV qspinlock code to follow what was done in the PV ticketlock. - Add performance data for the unfair lock as well as the PV support code. v4->v5: - Move the optimized 2-task contending code to the

v5->v6: - Change the optimized 2-task contending code to make it fairer at the expense of a bit of performance. - Add a patch to support unfair queue spinlock for Xen. - Modify the PV qspinlock code to follow what was done in the PV ticketlock. - Add performance data for the unfair lock as well as the PV support code. v4->v5: - Move the optimized 2-task contending code to the

v4->v5: - Move the optimized 2-task contending code to the generic file to enable more architectures to use it without code duplication. - Address some of the style-related comments by PeterZ. - Allow the use of unfair queue spinlock in a real para-virtualized execution environment. - Add para-virtualization support to the qspinlock code by ensuring that the lock holder and queue

v4->v5: - Move the optimized 2-task contending code to the generic file to enable more architectures to use it without code duplication. - Address some of the style-related comments by PeterZ. - Allow the use of unfair queue spinlock in a real para-virtualized execution environment. - Add para-virtualization support to the qspinlock code by ensuring that the lock holder and queue