Displaying 7 results from an estimated 7 matches for "22a63fa".
2014 Feb 26
0
[PATCH RFC v5 7/8] pvqspinlock, x86: Add qspinlock para-virtualization support
...= {
#ifdef CONFIG_SMP
+#ifdef CONFIG_QUEUE_SPINLOCK
+ .kick_cpu = 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 22a63fa..f10446e 100644
--- a/kernel/locking/qspinlock.c
+++ b/kernel/locking/qspinlock.c
@@ -58,6 +58,26 @@
*/
/*
+ * 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)...
2014 Feb 26
0
[PATCH v5 3/8] qspinlock, x86: Add x86 specific optimization for 2 contending tasks
...ODE_OFFSET 8
+#if CONFIG_NR_CPUS >= (1 << 14)
+# define _Q_MANY_CPUS
+# define _QCODE_OFFSET 8
+#else
+# define _QCODE_OFFSET 16
+#endif
+
#define _QSPINLOCK_LOCKED 1U
#define _QSPINLOCK_LOCK_MASK 0xff
diff --git a/kernel/locking/qspinlock.c b/kernel/locking/qspinlock.c
index ed5efa7..22a63fa 100644
--- a/kernel/locking/qspinlock.c
+++ b/kernel/locking/qspinlock.c
@@ -109,8 +109,11 @@ static DEFINE_PER_CPU_ALIGNED(struct qnode_set, qnset) = { {{0}}, 0 };
* 2) A smp_u8_store_release() macro for byte size store operation *
* 3) A "union arch_qspinlock" structure that inclu...
2014 Feb 27
0
[PATCH v5 3/8] qspinlock, x86: Add x86 specific optimization for 2 contending tasks
...ODE_OFFSET 8
+#if CONFIG_NR_CPUS >= (1 << 14)
+# define _Q_MANY_CPUS
+# define _QCODE_OFFSET 8
+#else
+# define _QCODE_OFFSET 16
+#endif
+
#define _QSPINLOCK_LOCKED 1U
#define _QSPINLOCK_LOCK_MASK 0xff
diff --git a/kernel/locking/qspinlock.c b/kernel/locking/qspinlock.c
index ed5efa7..22a63fa 100644
--- a/kernel/locking/qspinlock.c
+++ b/kernel/locking/qspinlock.c
@@ -109,8 +109,11 @@ static DEFINE_PER_CPU_ALIGNED(struct qnode_set, qnset) = { {{0}}, 0 };
* 2) A smp_u8_store_release() macro for byte size store operation *
* 3) A "union arch_qspinlock" structure that inclu...
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