search for: 0030fad

...ck; struct { u8 lock; /* Lock bit */ - u8 reserved; + u8 wait; /* Waiting bit */ u16 qcode; /* Queue code */ }; + u16 lock_wait; /* Lock and wait bits */ u32 qlcode; /* Complete lock word */ }; diff --git a/kernel/locking/qspinlock.c b/kernel/locking/qspinlock.c index 52d3580..0030fad 100644 --- a/kernel/locking/qspinlock.c +++ b/kernel/locking/qspinlock.c @@ -112,6 +112,8 @@ static DEFINE_PER_CPU_ALIGNED(struct qnode_set, qnset) = { { { 0 } }, 0 }; * o lock - the lock byte * * o qcode - the queue node code * * o qlcode - the 32-bit qspinl...

...ef CONFIG_QUEUE_SPINLOCK + .kick_cpu = paravirt_nop, + .hibernate = paravirt_nop, +#else .lock_spinning = __PV_IS_CALLEE_SAVE(paravirt_nop), .unlock_kick = paravirt_nop, #endif +#endif }; EXPORT_SYMBOL(pv_lock_ops); diff --git a/kernel/locking/qspinlock.c b/kernel/locking/qspinlock.c index 0030fad..a07cf8c 100644 --- a/kernel/locking/qspinlock.c +++ b/kernel/locking/qspinlock.c @@ -58,6 +58,31 @@ */ /* + * Para-virtualized queue spinlock support + */ +#ifdef CONFIG_PARAVIRT_SPINLOCKS +#include <asm/pvqspinlock.h> +#else + +#define PV_SET_VAR(type, var, val) +#define PV_VAR(var)...

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