Displaying 5 results from an estimated 5 matches for "threahold".
2014 Feb 26
0
[PATCH RFC v5 7/8] pvqspinlock, x86: Add qspinlock para-virtualization support
...eriodically. If it is not, the queue head CPU may be scheduled
+ * out. It will then send the kick-cpu signal to the queue head CPU.
+ */
+
+/*
+ * Loop thresholds
+ */
+#define HEAD_SPIN_THRESHOLD (1<<12) /* Threshold to kick lock holder */
+#define CLEAR_ACTIVE_THRESHOLD (1<<8) /* Threahold for clearing active flag */
+#define CLEAR_ACTIVE_MASK (CLEAR_ACTIVE_THRESHOLD - 1)
+
+/*
+ * PV macros
+ */
+#define PV_SET_VAR(type, var, val) type var = val
+#define PV_VAR(var) var
+#define PV_GET_NXTCPU(node) (node)->pv.nxtcpu_p1
+
+/*
+ * Additional fields to be added to the qnode struc...
2014 Feb 26
22
[PATCH v5 0/8] qspinlock: a 4-byte queue spinlock with PV support
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
2014 Feb 26
22
[PATCH v5 0/8] qspinlock: a 4-byte queue spinlock with PV support
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
2014 Feb 27
14
[PATCH v5 0/8] qspinlock: a 4-byte queue spinlock with PV support
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
2014 Feb 27
14
[PATCH v5 0/8] qspinlock: a 4-byte queue spinlock with PV support
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