Displaying 20 results from an estimated 46 matches for "pv_enabl".
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pv_enabled
2014 Oct 27
2
[PATCH v12 09/11] pvqspinlock, x86: Add para-virtualization support
...m/pvqspinlo
index d424252..241bf30 100644
--- a/arch/x86/include/asm/pvqspinlock.h
+++ b/arch/x86/include/asm/pvqspinlock.h
@@ -79,9 +79,6 @@ static inline void pv_init_node(struct mcs_spinlock *node)
BUILD_BUG_ON(sizeof(struct pv_qnode) > 5*sizeof(struct
mcs_spinlock));
- if (!pv_enabled())
- return;
-
pn->cpustate = PV_CPU_ACTIVE;
pn->mayhalt = false;
pn->mycpu = smp_processor_id();
@@ -132,9 +129,6 @@ static inline bool pv_link_and_wait_node(u32 old,
struct mcs
struct pv_qnode *ppn, *pn = (struct pv_qnode *)node;...
2014 Oct 27
2
[PATCH v12 09/11] pvqspinlock, x86: Add para-virtualization support
...m/pvqspinlo
index d424252..241bf30 100644
--- a/arch/x86/include/asm/pvqspinlock.h
+++ b/arch/x86/include/asm/pvqspinlock.h
@@ -79,9 +79,6 @@ static inline void pv_init_node(struct mcs_spinlock *node)
BUILD_BUG_ON(sizeof(struct pv_qnode) > 5*sizeof(struct
mcs_spinlock));
- if (!pv_enabled())
- return;
-
pn->cpustate = PV_CPU_ACTIVE;
pn->mayhalt = false;
pn->mycpu = smp_processor_id();
@@ -132,9 +129,6 @@ static inline bool pv_link_and_wait_node(u32 old,
struct mcs
struct pv_qnode *ppn, *pn = (struct pv_qnode *)node;...
2014 Oct 24
3
[PATCH v12 09/11] pvqspinlock, x86: Add para-virtualization support
...02:10:38PM -0400, Waiman Long wrote:
>> +static inline void pv_init_node(struct mcs_spinlock *node)
>> +{
>> + struct pv_qnode *pn = (struct pv_qnode *)node;
>> +
>> + BUILD_BUG_ON(sizeof(struct pv_qnode)> 5*sizeof(struct mcs_spinlock));
>> +
>> + if (!pv_enabled())
>> + return;
>> +
>> + pn->cpustate = PV_CPU_ACTIVE;
>> + pn->mayhalt = false;
>> + pn->mycpu = smp_processor_id();
>> + pn->head = PV_INVALID_HEAD;
>> +}
>
>> @@ -333,6 +393,7 @@ queue:
>> node += idx;
>>...
2014 Oct 24
3
[PATCH v12 09/11] pvqspinlock, x86: Add para-virtualization support
...02:10:38PM -0400, Waiman Long wrote:
>> +static inline void pv_init_node(struct mcs_spinlock *node)
>> +{
>> + struct pv_qnode *pn = (struct pv_qnode *)node;
>> +
>> + BUILD_BUG_ON(sizeof(struct pv_qnode)> 5*sizeof(struct mcs_spinlock));
>> +
>> + if (!pv_enabled())
>> + return;
>> +
>> + pn->cpustate = PV_CPU_ACTIVE;
>> + pn->mayhalt = false;
>> + pn->mycpu = smp_processor_id();
>> + pn->head = PV_INVALID_HEAD;
>> +}
>
>> @@ -333,6 +393,7 @@ queue:
>> node += idx;
>>...
2014 Oct 16
2
[PATCH v12 09/11] pvqspinlock, x86: Add para-virtualization support
...elds in struct pv_qnode
+ * @node: pointer to struct mcs_spinlock
+ * @cpu : current CPU number
+ */
+static inline void pv_init_node(struct mcs_spinlock *node)
+{
+ struct pv_qnode *pn = (struct pv_qnode *)node;
+
+ BUILD_BUG_ON(sizeof(struct pv_qnode) > 5*sizeof(struct mcs_spinlock));
+
+ if (!pv_enabled())
+ return;
+
+ pn->cpustate = PV_CPU_ACTIVE;
+ pn->mayhalt = false;
+ pn->mycpu = smp_processor_id();
+ pn->head = PV_INVALID_HEAD;
+}
+
+/**
+ * pv_decode_tail - initialize fields in struct pv_qnode
+ * @tail: the tail code (lock value)
+ * Return: a pointer to the tail pv...
2014 Oct 16
2
[PATCH v12 09/11] pvqspinlock, x86: Add para-virtualization support
...elds in struct pv_qnode
+ * @node: pointer to struct mcs_spinlock
+ * @cpu : current CPU number
+ */
+static inline void pv_init_node(struct mcs_spinlock *node)
+{
+ struct pv_qnode *pn = (struct pv_qnode *)node;
+
+ BUILD_BUG_ON(sizeof(struct pv_qnode) > 5*sizeof(struct mcs_spinlock));
+
+ if (!pv_enabled())
+ return;
+
+ pn->cpustate = PV_CPU_ACTIVE;
+ pn->mayhalt = false;
+ pn->mycpu = smp_processor_id();
+ pn->head = PV_INVALID_HEAD;
+}
+
+/**
+ * pv_decode_tail - initialize fields in struct pv_qnode
+ * @tail: the tail code (lock value)
+ * Return: a pointer to the tail pv...
2015 Mar 16
0
[PATCH 8/9] qspinlock: Generic paravirt support
...always_inline void __pv_init_node(struct mcs_spinlock *node) { }
+static __always_inline void __pv_wait_node(struct mcs_spinlock *node) { }
+static __always_inline void __pv_kick_node(struct mcs_spinlock *node) { }
+
+static __always_inline void __pv_wait_head(struct qspinlock *lock) { }
+
+#define pv_enabled() false
+
+#define pv_init_node __pv_init_node
+#define pv_wait_node __pv_wait_node
+#define pv_kick_node __pv_kick_node
+
+#define pv_wait_head __pv_wait_head
+
+#ifdef CONFIG_PARAVIRT_SPINLOCKS
+#define queue_spin_lock_slowpath native_queue_spin_lock_slowpath
+#endif
+
+#endif /* _GEN_PV_L...
2015 Mar 16
0
[PATCH 8/9] qspinlock: Generic paravirt support
...always_inline void __pv_init_node(struct mcs_spinlock *node) { }
+static __always_inline void __pv_wait_node(struct mcs_spinlock *node) { }
+static __always_inline void __pv_kick_node(struct mcs_spinlock *node) { }
+
+static __always_inline void __pv_wait_head(struct qspinlock *lock) { }
+
+#define pv_enabled() false
+
+#define pv_init_node __pv_init_node
+#define pv_wait_node __pv_wait_node
+#define pv_kick_node __pv_kick_node
+
+#define pv_wait_head __pv_wait_head
+
+#ifdef CONFIG_PARAVIRT_SPINLOCKS
+#define queue_spin_lock_slowpath native_queue_spin_lock_slowpath
+#endif
+
+#endif /* _GEN_PV_L...
2015 Apr 07
0
[PATCH v15 09/15] pvqspinlock: Implement simple paravirt support for the qspinlock
...ruct mcs_spinlock *node) { }
+static __always_inline void __pv_wait_node(struct mcs_spinlock *node) { }
+static __always_inline void __pv_kick_node(struct mcs_spinlock *node) { }
+
+static __always_inline void __pv_wait_head(struct qspinlock *lock,
+ struct mcs_spinlock *node) { }
+
+#define pv_enabled() false
+
+#define pv_init_node __pv_init_node
+#define pv_wait_node __pv_wait_node
+#define pv_kick_node __pv_kick_node
+
+#define pv_wait_head __pv_wait_head
+
+#ifdef CONFIG_PARAVIRT_SPINLOCKS
+#define queue_spin_lock_slowpath native_queue_spin_lock_slowpath
+#endif
+
+#endif /* _GEN_PV_L...
2015 Apr 24
0
[PATCH v16 08/14] pvqspinlock: Implement simple paravirt support for the qspinlock
...ruct mcs_spinlock *node) { }
+static __always_inline void __pv_wait_node(struct mcs_spinlock *node) { }
+static __always_inline void __pv_kick_node(struct mcs_spinlock *node) { }
+
+static __always_inline void __pv_wait_head(struct qspinlock *lock,
+ struct mcs_spinlock *node) { }
+
+#define pv_enabled() false
+
+#define pv_init_node __pv_init_node
+#define pv_wait_node __pv_wait_node
+#define pv_kick_node __pv_kick_node
+#define pv_wait_head __pv_wait_head
+
+#ifdef CONFIG_PARAVIRT_SPINLOCKS
+#define queue_spin_lock_slowpath native_queue_spin_lock_slowpath
+#endif
+
+#endif /* _GEN_PV_LOC...
2014 Oct 24
0
[PATCH v12 09/11] pvqspinlock, x86: Add para-virtualization support
On Thu, Oct 16, 2014 at 02:10:38PM -0400, Waiman Long wrote:
> +static inline void pv_init_node(struct mcs_spinlock *node)
> +{
> + struct pv_qnode *pn = (struct pv_qnode *)node;
> +
> + BUILD_BUG_ON(sizeof(struct pv_qnode) > 5*sizeof(struct mcs_spinlock));
> +
> + if (!pv_enabled())
> + return;
> +
> + pn->cpustate = PV_CPU_ACTIVE;
> + pn->mayhalt = false;
> + pn->mycpu = smp_processor_id();
> + pn->head = PV_INVALID_HEAD;
> +}
> @@ -333,6 +393,7 @@ queue:
> node += idx;
> node->locked = 0;
> node->next =...
2014 Oct 27
0
[PATCH v12 09/11] pvqspinlock, x86: Add para-virtualization support
...v_queue_spin_lock_slowpath(struct qspinlock *lock, u32 val)
> +#else
> void queue_spin_lock_slowpath(struct qspinlock *lock, u32 val)
> +#endif
If you have two functions you might as well use the PV stuff to patch in
the right function call at the usage sites and avoid:
> + if (pv_enabled()) {
> + pv_queue_spin_lock_slowpath(lock, val);
> + return;
> + }
this alltogether.
> this_cpu_dec(mcs_nodes[0].count);
> }
> EXPORT_SYMBOL(queue_spin_lock_slowpath);
> +
> +#if !defined(_GEN_PV_LOCK_SLOWPATH) && defin...
2015 Apr 08
2
[PATCH v15 16/16] unfair qspinlock: a queue based unfair lock
...ock *node,
+ struct mcs_spinlock *prev,
+ u32 my_tail, u32 prev_tail)
+ { return false; }
+static __always_inline bool __unfair_wait_head(struct qspinlock *lock,
+ struct mcs_spinlock *node,
+ u32 tail)
+ { return false; }
+
#define pv_enabled() false
+#define unfair_enabled() false
#define pv_init_node __pv_init_node
#define pv_wait_node __pv_wait_node
#define pv_scan_next __pv_scan_next
-
#define pv_wait_head __pv_wait_head
+#define unfair_init_node __unfair_init_node
+#define unfair_wait_node __unfair_wait_node
+#define...
2015 Apr 08
2
[PATCH v15 16/16] unfair qspinlock: a queue based unfair lock
...ock *node,
+ struct mcs_spinlock *prev,
+ u32 my_tail, u32 prev_tail)
+ { return false; }
+static __always_inline bool __unfair_wait_head(struct qspinlock *lock,
+ struct mcs_spinlock *node,
+ u32 tail)
+ { return false; }
+
#define pv_enabled() false
+#define unfair_enabled() false
#define pv_init_node __pv_init_node
#define pv_wait_node __pv_wait_node
#define pv_scan_next __pv_scan_next
-
#define pv_wait_head __pv_wait_head
+#define unfair_init_node __unfair_init_node
+#define unfair_wait_node __unfair_wait_node
+#define...
2015 May 04
1
[PATCH v16 08/14] pvqspinlock: Implement simple paravirt support for the qspinlock
...ruct mcs_spinlock *node) { }
+static __always_inline void __pv_wait_node(struct mcs_spinlock *node) { }
+static __always_inline void __pv_kick_node(struct mcs_spinlock *node) { }
+
+static __always_inline void __pv_wait_head(struct qspinlock *lock,
+ struct mcs_spinlock *node) { }
+
+#define pv_enabled() false
+
+#define pv_init_node __pv_init_node
+#define pv_wait_node __pv_wait_node
+#define pv_kick_node __pv_kick_node
+#define pv_wait_head __pv_wait_head
+
+#ifdef CONFIG_PARAVIRT_SPINLOCKS
+#define queue_spin_lock_slowpath native_queue_spin_lock_slowpath
+#endif
+
+#endif /* _GEN_PV_LOC...
2015 May 04
1
[PATCH v16 08/14] pvqspinlock: Implement simple paravirt support for the qspinlock
...ruct mcs_spinlock *node) { }
+static __always_inline void __pv_wait_node(struct mcs_spinlock *node) { }
+static __always_inline void __pv_kick_node(struct mcs_spinlock *node) { }
+
+static __always_inline void __pv_wait_head(struct qspinlock *lock,
+ struct mcs_spinlock *node) { }
+
+#define pv_enabled() false
+
+#define pv_init_node __pv_init_node
+#define pv_wait_node __pv_wait_node
+#define pv_kick_node __pv_kick_node
+#define pv_wait_head __pv_wait_head
+
+#ifdef CONFIG_PARAVIRT_SPINLOCKS
+#define queue_spin_lock_slowpath native_queue_spin_lock_slowpath
+#endif
+
+#endif /* _GEN_PV_LOC...
2015 Mar 18
2
[PATCH 8/9] qspinlock: Generic paravirt support
...ode(struct mcs_spinlock *node) { }
> +static __always_inline void __pv_wait_node(struct mcs_spinlock *node) { }
> +static __always_inline void __pv_kick_node(struct mcs_spinlock *node) { }
> +
> +static __always_inline void __pv_wait_head(struct qspinlock *lock) { }
> +
> +#define pv_enabled() false
> +
> +#define pv_init_node __pv_init_node
> +#define pv_wait_node __pv_wait_node
> +#define pv_kick_node __pv_kick_node
> +
> +#define pv_wait_head __pv_wait_head
> +
> +#ifdef CONFIG_PARAVIRT_SPINLOCKS
> +#define queue_spin_lock_slowpath native_queue_spin...
2015 Mar 18
2
[PATCH 8/9] qspinlock: Generic paravirt support
...ode(struct mcs_spinlock *node) { }
> +static __always_inline void __pv_wait_node(struct mcs_spinlock *node) { }
> +static __always_inline void __pv_kick_node(struct mcs_spinlock *node) { }
> +
> +static __always_inline void __pv_wait_head(struct qspinlock *lock) { }
> +
> +#define pv_enabled() false
> +
> +#define pv_init_node __pv_init_node
> +#define pv_wait_node __pv_wait_node
> +#define pv_kick_node __pv_kick_node
> +
> +#define pv_wait_head __pv_wait_head
> +
> +#ifdef CONFIG_PARAVIRT_SPINLOCKS
> +#define queue_spin_lock_slowpath native_queue_spin...
2020 Jul 21
2
[PATCH v3 0/6] powerpc: queued spinlocks and rwlocks
...@ static __always_inline u32 __pv_wait_head_or_lock(struct qspinlock *lock,
*/
void queued_spin_lock_slowpath(struct qspinlock *lock, u32 val)
{
- struct mcs_spinlock *prev, *next, *node;
- u32 old, tail;
- int idx;
-
- BUILD_BUG_ON(CONFIG_NR_CPUS >= (1U << _Q_TAIL_CPU_BITS));
-
if (pv_enabled())
goto pv_queue;
@@ -397,6 +395,26 @@ void queued_spin_lock_slowpath(struct qspinlock *lock, u32 val)
queue:
lockevent_inc(lock_slowpath);
pv_queue:
+ __queued_spin_lock_slowpath_queue(lock);
+}
+EXPORT_SYMBOL(queued_spin_lock_slowpath);
+
+void queued_spin_lock_slowpath_queue(struct qs...
2020 Jul 21
2
[PATCH v3 0/6] powerpc: queued spinlocks and rwlocks
...@ static __always_inline u32 __pv_wait_head_or_lock(struct qspinlock *lock,
*/
void queued_spin_lock_slowpath(struct qspinlock *lock, u32 val)
{
- struct mcs_spinlock *prev, *next, *node;
- u32 old, tail;
- int idx;
-
- BUILD_BUG_ON(CONFIG_NR_CPUS >= (1U << _Q_TAIL_CPU_BITS));
-
if (pv_enabled())
goto pv_queue;
@@ -397,6 +395,26 @@ void queued_spin_lock_slowpath(struct qspinlock *lock, u32 val)
queue:
lockevent_inc(lock_slowpath);
pv_queue:
+ __queued_spin_lock_slowpath_queue(lock);
+}
+EXPORT_SYMBOL(queued_spin_lock_slowpath);
+
+void queued_spin_lock_slowpath_queue(struct qs...