search for: __spin_yield

Displaying 20 results from an estimated 31 matches for "__spin_yield".

[PATCH v5 1/6] qspinlock: powerpc support qspinlock
2016 Jun 03
2
[PATCH v5 1/6] qspinlock: powerpc support qspinlock
...pinlock.h > @@ -52,6 +52,20 @@ > ?#define SYNC_IO > ?#endif > ? > +#if defined(CONFIG_PPC_SPLPAR) > +/* We only yield to the hypervisor if we are in shared processor > mode */ > +#define SHARED_PROCESSOR (lppaca_shared_proc(local_paca- > >lppaca_ptr)) > +extern void __spin_yield(arch_spinlock_t *lock); > +extern void __rw_yield(arch_rwlock_t *lock); > +#else /* SPLPAR */ > +#define __spin_yield(x) barrier() > +#define __rw_yield(x) barrier() > +#define SHARED_PROCESSOR 0 > +#endif > + > +#ifdef CONFIG_QUEUED_SPINLOCKS > +#include <asm/qspinloc...
[PATCH v5 1/6] qspinlock: powerpc support qspinlock
2016 Jun 03
2
[PATCH v5 1/6] qspinlock: powerpc support qspinlock
...pinlock.h > @@ -52,6 +52,20 @@ > ?#define SYNC_IO > ?#endif > ? > +#if defined(CONFIG_PPC_SPLPAR) > +/* We only yield to the hypervisor if we are in shared processor > mode */ > +#define SHARED_PROCESSOR (lppaca_shared_proc(local_paca- > >lppaca_ptr)) > +extern void __spin_yield(arch_spinlock_t *lock); > +extern void __rw_yield(arch_rwlock_t *lock); > +#else /* SPLPAR */ > +#define __spin_yield(x) barrier() > +#define __rw_yield(x) barrier() > +#define SHARED_PROCESSOR 0 > +#endif > + > +#ifdef CONFIG_QUEUED_SPINLOCKS > +#include <asm/qspinloc...
[PATCH v8 1/6] powerpc/qspinlock: powerpc support qspinlock
2016 Dec 06
1
[PATCH v8 1/6] powerpc/qspinlock: powerpc support qspinlock
...,6 +60,23 @@ static inline bool vcpu_is_preempted(int cpu) > } > #endif > > +#if defined(CONFIG_PPC_SPLPAR) > +/* We only yield to the hypervisor if we are in shared processor mode */ > +#define SHARED_PROCESSOR (lppaca_shared_proc(local_paca->lppaca_ptr)) > +extern void __spin_yield(arch_spinlock_t *lock); > +extern void __rw_yield(arch_rwlock_t *lock); > +#else /* SPLPAR */ > +#define __spin_yield(x) barrier() > +#define __rw_yield(x) barrier() > +#define SHARED_PROCESSOR 0 > +#endif > + > +#ifdef CONFIG_QUEUED_SPINLOCKS > +#include &l...
[PATCH v8 1/6] powerpc/qspinlock: powerpc support qspinlock
2016 Dec 06
1
[PATCH v8 1/6] powerpc/qspinlock: powerpc support qspinlock
...,6 +60,23 @@ static inline bool vcpu_is_preempted(int cpu) > } > #endif > > +#if defined(CONFIG_PPC_SPLPAR) > +/* We only yield to the hypervisor if we are in shared processor mode */ > +#define SHARED_PROCESSOR (lppaca_shared_proc(local_paca->lppaca_ptr)) > +extern void __spin_yield(arch_spinlock_t *lock); > +extern void __rw_yield(arch_rwlock_t *lock); > +#else /* SPLPAR */ > +#define __spin_yield(x) barrier() > +#define __rw_yield(x) barrier() > +#define SHARED_PROCESSOR 0 > +#endif > + > +#ifdef CONFIG_QUEUED_SPINLOCKS > +#include &l...
[PATCH v8 1/6] powerpc/qspinlock: powerpc support qspinlock
2016 Dec 05
0
[PATCH v8 1/6] powerpc/qspinlock: powerpc support qspinlock
...werpc/include/asm/spinlock.h @@ -60,6 +60,23 @@ static inline bool vcpu_is_preempted(int cpu) } #endif +#if defined(CONFIG_PPC_SPLPAR) +/* We only yield to the hypervisor if we are in shared processor mode */ +#define SHARED_PROCESSOR (lppaca_shared_proc(local_paca->lppaca_ptr)) +extern void __spin_yield(arch_spinlock_t *lock); +extern void __rw_yield(arch_rwlock_t *lock); +#else /* SPLPAR */ +#define __spin_yield(x) barrier() +#define __rw_yield(x) barrier() +#define SHARED_PROCESSOR 0 +#endif + +#ifdef CONFIG_QUEUED_SPINLOCKS +#include <asm/qspinlock.h> +#else + +#define arch_...
[PATCH v5 1/6] qspinlock: powerpc support qspinlock
2016 Jun 02
0
[PATCH v5 1/6] qspinlock: powerpc support qspinlock
...ude/asm/spinlock.h +++ b/arch/powerpc/include/asm/spinlock.h @@ -52,6 +52,20 @@ #define SYNC_IO #endif +#if defined(CONFIG_PPC_SPLPAR) +/* We only yield to the hypervisor if we are in shared processor mode */ +#define SHARED_PROCESSOR (lppaca_shared_proc(local_paca->lppaca_ptr)) +extern void __spin_yield(arch_spinlock_t *lock); +extern void __rw_yield(arch_rwlock_t *lock); +#else /* SPLPAR */ +#define __spin_yield(x) barrier() +#define __rw_yield(x) barrier() +#define SHARED_PROCESSOR 0 +#endif + +#ifdef CONFIG_QUEUED_SPINLOCKS +#include <asm/qspinlock.h> +#else static __always_inline int ar...
[PATCH v5 1/6] qspinlock: powerpc support qspinlock
2016 Jun 02
0
[PATCH v5 1/6] qspinlock: powerpc support qspinlock
...ude/asm/spinlock.h +++ b/arch/powerpc/include/asm/spinlock.h @@ -52,6 +52,20 @@ #define SYNC_IO #endif +#if defined(CONFIG_PPC_SPLPAR) +/* We only yield to the hypervisor if we are in shared processor mode */ +#define SHARED_PROCESSOR (lppaca_shared_proc(local_paca->lppaca_ptr)) +extern void __spin_yield(arch_spinlock_t *lock); +extern void __rw_yield(arch_rwlock_t *lock); +#else /* SPLPAR */ +#define __spin_yield(x) barrier() +#define __rw_yield(x) barrier() +#define SHARED_PROCESSOR 0 +#endif + +#ifdef CONFIG_QUEUED_SPINLOCKS +#include <asm/qspinlock.h> +#else static __always_inline int ar...
[PATCH v5 1/6] qspinlock: powerpc support qspinlock
2016 Jun 03
0
[PATCH v5 1/6] qspinlock: powerpc support qspinlock
...gt; > ?#endif > > ? > > +#if defined(CONFIG_PPC_SPLPAR) > > +/* We only yield to the hypervisor if we are in shared processor > > mode */ > > +#define SHARED_PROCESSOR (lppaca_shared_proc(local_paca- > > > > > > lppaca_ptr)) > > +extern void __spin_yield(arch_spinlock_t *lock); > > +extern void __rw_yield(arch_rwlock_t *lock); > > +#else /* SPLPAR */ > > +#define __spin_yield(x) barrier() > > +#define __rw_yield(x) barrier() > > +#define SHARED_PROCESSOR 0 > > +#endif > > + > > +#ifdef CONFIG_QUEUED_S...
[PATCH v5 0/6] powerPC/pSeries use pv-qpsinlock as the default spinlock implemention
2016 Jun 02
8
[PATCH v5 0/6] powerPC/pSeries use pv-qpsinlock as the default spinlock implemention
...toring cpu number into a hash table(implemented as an array) This is because lock_stealing hit too much, up to 10%~20% of all the successful lock(), and avoid vcpu slices bounce. change from v2: __spin_yeild_cpu() will yield slices to lpar if target cpu is running. remove unnecessary rmb() in __spin_yield/wake_cpu. __pv_wait() will check the *ptr == val. some commit message change change fome v1: separate into 6 pathes from one patch some minor code changes. I do several tests on pseries IBM,8408-E8E with 32cpus, 64GB memory, kernel 4.6 benchmark test results are below. 2 perf tests: perf ben...
[PATCH v5 0/6] powerPC/pSeries use pv-qpsinlock as the default spinlock implemention
2016 Jun 02
8
[PATCH v5 0/6] powerPC/pSeries use pv-qpsinlock as the default spinlock implemention
...toring cpu number into a hash table(implemented as an array) This is because lock_stealing hit too much, up to 10%~20% of all the successful lock(), and avoid vcpu slices bounce. change from v2: __spin_yeild_cpu() will yield slices to lpar if target cpu is running. remove unnecessary rmb() in __spin_yield/wake_cpu. __pv_wait() will check the *ptr == val. some commit message change change fome v1: separate into 6 pathes from one patch some minor code changes. I do several tests on pseries IBM,8408-E8E with 32cpus, 64GB memory, kernel 4.6 benchmark test results are below. 2 perf tests: perf ben...
[PATCH v8 0/6] Implement qspinlock/pv-qspinlock on ppc
2016 Dec 05
9
[PATCH v8 0/6] Implement qspinlock/pv-qspinlock on ppc
Hi All, this is the fairlock patchset. You can apply them and build successfully. patches are based on linux-next qspinlock can avoid waiter starved issue. It has about the same speed in single-thread and it can be much faster in high contention situations especially when the spinlock is embedded within the data structure to be protected. v7 -> v8: add one patch to drop a function call
[PATCH v8 0/6] Implement qspinlock/pv-qspinlock on ppc
2016 Dec 05
9
[PATCH v8 0/6] Implement qspinlock/pv-qspinlock on ppc
Hi All, this is the fairlock patchset. You can apply them and build successfully. patches are based on linux-next qspinlock can avoid waiter starved issue. It has about the same speed in single-thread and it can be much faster in high contention situations especially when the spinlock is embedded within the data structure to be protected. v7 -> v8: add one patch to drop a function call
[PATCH] powerpc: enable qspinlock and its virtualization support
2016 Apr 28
0
[PATCH] powerpc: enable qspinlock and its virtualization support
...ude/asm/spinlock.h +++ b/arch/powerpc/include/asm/spinlock.h @@ -52,6 +52,24 @@ #define SYNC_IO #endif +#if defined(CONFIG_PPC_SPLPAR) +/* We only yield to the hypervisor if we are in shared processor mode */ +#define SHARED_PROCESSOR (lppaca_shared_proc(local_paca->lppaca_ptr)) +extern void __spin_yield(arch_spinlock_t *lock); +extern void __spin_yield_cpu(int cpu); +extern void __spin_wake_cpu(int cpu); +extern void __rw_yield(arch_rwlock_t *lock); +#else /* SPLPAR */ +#define __spin_yield(x) barrier() +#define __spin_yield_cpu(x) barrier() +#define __spin_wake_cpu(x) barrier() +#define __rw_yiel...
[PATCH] powerpc: enable qspinlock and its virtualization support
2016 Apr 28
0
[PATCH] powerpc: enable qspinlock and its virtualization support
...ude/asm/spinlock.h +++ b/arch/powerpc/include/asm/spinlock.h @@ -52,6 +52,24 @@ #define SYNC_IO #endif +#if defined(CONFIG_PPC_SPLPAR) +/* We only yield to the hypervisor if we are in shared processor mode */ +#define SHARED_PROCESSOR (lppaca_shared_proc(local_paca->lppaca_ptr)) +extern void __spin_yield(arch_spinlock_t *lock); +extern void __spin_yield_cpu(int cpu); +extern void __spin_wake_cpu(int cpu); +extern void __rw_yield(arch_rwlock_t *lock); +#else /* SPLPAR */ +#define __spin_yield(x) barrier() +#define __spin_yield_cpu(x) barrier() +#define __spin_wake_cpu(x) barrier() +#define __rw_yiel...
[PATCH v3 0/6] powerpc use pv-qpsinlock instead of spinlock
2016 May 17
6
[PATCH v3 0/6] powerpc use pv-qpsinlock instead of spinlock
...# # Overhead Command Shared Object Symbol # ........ ............... ................... ........................................................ # 22.96% sched-messaging [kernel.kallsyms] [k] _raw_spin_lock_irqsave 19.76% sched-messaging [kernel.kallsyms] [k] __spin_yield 2.09% sched-messaging [kernel.kallsyms] [k] __slab_free 2.07% sched-messaging [kernel.kallsyms] [k] unix_stream_read_generic pv-qspinlock: test 1) # Running futex/hash benchmark... Run summary [PID 3219]: 32 threads, each operating on 1024 [private] futexes for 10 secs. Avera...
[PATCH v3 0/6] powerpc use pv-qpsinlock instead of spinlock
2016 May 17
6
[PATCH v3 0/6] powerpc use pv-qpsinlock instead of spinlock
...# # Overhead Command Shared Object Symbol # ........ ............... ................... ........................................................ # 22.96% sched-messaging [kernel.kallsyms] [k] _raw_spin_lock_irqsave 19.76% sched-messaging [kernel.kallsyms] [k] __spin_yield 2.09% sched-messaging [kernel.kallsyms] [k] __slab_free 2.07% sched-messaging [kernel.kallsyms] [k] unix_stream_read_generic pv-qspinlock: test 1) # Running futex/hash benchmark... Run summary [PID 3219]: 32 threads, each operating on 1024 [private] futexes for 10 secs. Avera...
[PATCH v5 1/6] qspinlock: powerpc support qspinlock
2016 Jun 03
3
[PATCH v5 1/6] qspinlock: powerpc support qspinlock
...t;>> >>> +#if defined(CONFIG_PPC_SPLPAR) >>> +/* We only yield to the hypervisor if we are in shared processor >>> mode */ >>> +#define SHARED_PROCESSOR (lppaca_shared_proc(local_paca- >>>> >>>> lppaca_ptr)) >>> +extern void __spin_yield(arch_spinlock_t *lock); >>> +extern void __rw_yield(arch_rwlock_t *lock); >>> +#else /* SPLPAR */ >>> +#define __spin_yield(x) barrier() >>> +#define __rw_yield(x) barrier() >>> +#define SHARED_PROCESSOR 0 >>> +#endif >>> + >>>...
[PATCH v5 1/6] qspinlock: powerpc support qspinlock
2016 Jun 03
3
[PATCH v5 1/6] qspinlock: powerpc support qspinlock
...t;>> >>> +#if defined(CONFIG_PPC_SPLPAR) >>> +/* We only yield to the hypervisor if we are in shared processor >>> mode */ >>> +#define SHARED_PROCESSOR (lppaca_shared_proc(local_paca- >>>> >>>> lppaca_ptr)) >>> +extern void __spin_yield(arch_spinlock_t *lock); >>> +extern void __rw_yield(arch_rwlock_t *lock); >>> +#else /* SPLPAR */ >>> +#define __spin_yield(x) barrier() >>> +#define __rw_yield(x) barrier() >>> +#define SHARED_PROCESSOR 0 >>> +#endif >>> + >>>...
[PATCH v3 0/6] powerpc use pv-qpsinlock as the default spinlock implemention
2016 May 25
10
[PATCH v3 0/6] powerpc use pv-qpsinlock as the default spinlock implemention
change from v2: __spin_yeild_cpu() will yield slices to lpar if target cpu is running. remove unnecessary rmb() in __spin_yield/wake_cpu. __pv_wait() will check the *ptr == val. some commit message change change fome v1: separate into 6 pathes from one patch some minor code changes. I do several tests on pseries IBM,8408-E8E with 32cpus, 64GB memory. benchmark test results are below. 2 perf tests: perf bench futex ha...
[PATCH v3 0/6] powerpc use pv-qpsinlock as the default spinlock implemention
2016 May 25
10
[PATCH v3 0/6] powerpc use pv-qpsinlock as the default spinlock implemention
change from v2: __spin_yeild_cpu() will yield slices to lpar if target cpu is running. remove unnecessary rmb() in __spin_yield/wake_cpu. __pv_wait() will check the *ptr == val. some commit message change change fome v1: separate into 6 pathes from one patch some minor code changes. I do several tests on pseries IBM,8408-E8E with 32cpus, 64GB memory. benchmark test results are below. 2 perf tests: perf bench futex ha...