search for: nxtcpu_p1

...b/arch/x86/include/asm/pvqspinlock.h new file mode 100644 index 0000000..45aae39 --- /dev/null +++ b/arch/x86/include/asm/pvqspinlock.h @@ -0,0 +1,176 @@ +#ifndef _ASM_X86_PVQSPINLOCK_H +#define _ASM_X86_PVQSPINLOCK_H + +/* + * Queue Spinlock Para-Virtualization Support + * + * +------+ +-----+ nxtcpu_p1 +----+ + * | Lock | |Queue|----------->|Next| + * |Holder|<-----------|Head |<-----------|Node| + * +------+ prev_qcode +-----+ prev_qcode +----+ + * + * As long as the current lock holder passes through the slowpath, the queue + * head CPU will have its CPU number stored in prev_qcod...

...h/x86/include/asm/pvqspinlock.h new file mode 100644 index 0000000..13cbc4f --- /dev/null +++ b/arch/x86/include/asm/pvqspinlock.h @@ -0,0 +1,232 @@ +#ifndef _ASM_X86_PVQSPINLOCK_H +#define _ASM_X86_PVQSPINLOCK_H + +/* + * Queue Spinlock Para-Virtualization (PV) Support + * + * +------+ +-----+ nxtcpu_p1 +----+ + * | Lock | |Queue|----------->|Next| + * |Holder|<-----------|Head |<-----------|Node| + * +------+ prev_qcode +-----+ prev_qcode +----+ + * + * As long as the current lock holder passes through the slowpath, the queue + * head CPU will have its CPU number stored in prev_qcod...

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

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