search for: add_smp

Displaying 20 results from an estimated 112 matches for "add_smp".

[PATCH] x86 spinlock: Fix memory corruption on completing completions
2015 Feb 06
10
[PATCH] x86 spinlock: Fix memory corruption on completing completions
Paravirt spinlock clears slowpath flag after doing unlock. As explained by Linus currently it does: prev = *lock; add_smp(&lock->tickets.head, TICKET_LOCK_INC); /* add_smp() is a full mb() */ if (unlikely(lock->tickets.tail & TICKET_SLOWPATH_FLAG)) __ticket_unlock_slowpath(lock, prev); which is *exactly* the kind of things you cannot do with spi...
[PATCH] x86 spinlock: Fix memory corruption on completing completions
2015 Feb 06
10
[PATCH] x86 spinlock: Fix memory corruption on completing completions
Paravirt spinlock clears slowpath flag after doing unlock. As explained by Linus currently it does: prev = *lock; add_smp(&lock->tickets.head, TICKET_LOCK_INC); /* add_smp() is a full mb() */ if (unlikely(lock->tickets.tail & TICKET_SLOWPATH_FLAG)) __ticket_unlock_slowpath(lock, prev); which is *exactly* the kind of things you cannot do with spi...
[PATCH for stable] x86/spinlocks/paravirt: Fix memory corruption on unlock
2015 Feb 24
4
[PATCH for stable] x86/spinlocks/paravirt: Fix memory corruption on unlock
...t;gregkh at linuxfoundation.org> wrote: > On Tue, Feb 24, 2015 at 02:54:59PM +0530, Raghavendra K T wrote: > > Paravirt spinlock clears slowpath flag after doing unlock. > > As explained by Linus currently it does: > > prev = *lock; > > add_smp(&lock->tickets.head, TICKET_LOCK_INC); > > > > /* add_smp() is a full mb() */ > > > > if (unlikely(lock->tickets.tail & TICKET_SLOWPATH_FLAG)) > > __ticket_unlock_slowpath(lock, prev); > > &...
[PATCH for stable] x86/spinlocks/paravirt: Fix memory corruption on unlock
2015 Feb 24
4
[PATCH for stable] x86/spinlocks/paravirt: Fix memory corruption on unlock
...t;gregkh at linuxfoundation.org> wrote: > On Tue, Feb 24, 2015 at 02:54:59PM +0530, Raghavendra K T wrote: > > Paravirt spinlock clears slowpath flag after doing unlock. > > As explained by Linus currently it does: > > prev = *lock; > > add_smp(&lock->tickets.head, TICKET_LOCK_INC); > > > > /* add_smp() is a full mb() */ > > > > if (unlikely(lock->tickets.tail & TICKET_SLOWPATH_FLAG)) > > __ticket_unlock_slowpath(lock, prev); > > &...
[PATCH v14 11/11] pvqspinlock, x86: Enable PV qspinlock for XEN
2015 Jan 20
0
[PATCH v14 11/11] pvqspinlock, x86: Enable PV qspinlock for XEN
...stats; /* Halting abort count */ +static u32 wake_kick_stats; /* Wakeup by kicking count */ +static u32 wake_spur_stats; /* Spurious wakeup count */ +static u64 time_blocked; /* Total blocking time */ + +void xen_lock_stats(int stat_types) +{ + if (stat_types & PV_LOCKSTAT_WAKE_KICKED) + add_smp(&wake_kick_stats, 1); + if (stat_types & PV_LOCKSTAT_WAKE_SPURIOUS) + add_smp(&wake_spur_stats, 1); + if (stat_types & PV_LOCKSTAT_KICK_NOHALT) + add_smp(&kick_nohlt_stats, 1); + if (stat_types & PV_LOCKSTAT_HALT_QHEAD) + add_smp(&halt_qhead_stats, 1); + if (stat_type...
[PATCH v14 11/11] pvqspinlock, x86: Enable PV qspinlock for XEN
2015 Jan 20
0
[PATCH v14 11/11] pvqspinlock, x86: Enable PV qspinlock for XEN
...stats; /* Halting abort count */ +static u32 wake_kick_stats; /* Wakeup by kicking count */ +static u32 wake_spur_stats; /* Spurious wakeup count */ +static u64 time_blocked; /* Total blocking time */ + +void xen_lock_stats(int stat_types) +{ + if (stat_types & PV_LOCKSTAT_WAKE_KICKED) + add_smp(&wake_kick_stats, 1); + if (stat_types & PV_LOCKSTAT_WAKE_SPURIOUS) + add_smp(&wake_spur_stats, 1); + if (stat_types & PV_LOCKSTAT_KICK_NOHALT) + add_smp(&kick_nohlt_stats, 1); + if (stat_types & PV_LOCKSTAT_HALT_QHEAD) + add_smp(&halt_qhead_stats, 1); + if (stat_type...
[PATCH v8 10/10] pvqspinlock, x86: Enable qspinlock PV support for XEN
2014 Apr 02
0
[PATCH v8 10/10] pvqspinlock, x86: Enable qspinlock PV support for XEN
...count */ +static u32 halt_qhead_stats; /* Queue head halting count */ +static u32 halt_qnode_stats; /* Queue node halting count */ +static u32 wake_kick_stats; /* Wakeup by kicking count */ +static u32 wake_spur_stats; /* Spurious wakeup count */ + +static inline void xen_kick_stats(void) +{ + add_smp(&kick_stats, 1); +} + +static inline void xen_halt_stats(enum pv_lock_stats type) +{ + if (type == PV_HALT_QHEAD) + add_smp(&halt_qhead_stats, 1); + else /* type == PV_HALT_QNODE */ + add_smp(&halt_qnode_stats, 1); +} + +static inline void xen_lock_stats(enum pv_lock_stats type) +{ +...
[PATCH v10 18/19] pvqspinlock, x86: Enable PV qspinlock PV for KVM
2014 May 07
1
[PATCH v10 18/19] pvqspinlock, x86: Enable PV qspinlock PV for KVM
...0644, d_spin_debug, &wake_spur_stats); > + debugfs_create_u64("time_blocked", > + 0644, d_spin_debug, &time_blocked); > + return 0; > +} > + > +static inline void kvm_halt_stats(enum pv_lock_stats type) > +{ > + if (type == PV_HALT_QHEAD) > + add_smp(&halt_qhead_stats, 1); > + else if (type == PV_HALT_QNODE) > + add_smp(&halt_qnode_stats, 1); > + else /* type == PV_HALT_ABORT */ > + add_smp(&halt_abort_stats, 1); > +} > + > +static inline void kvm_lock_stats(enum pv_lock_stats type) > +{ > + if (type ==...
[PATCH v10 18/19] pvqspinlock, x86: Enable PV qspinlock PV for KVM
2014 May 07
1
[PATCH v10 18/19] pvqspinlock, x86: Enable PV qspinlock PV for KVM
...0644, d_spin_debug, &wake_spur_stats); > + debugfs_create_u64("time_blocked", > + 0644, d_spin_debug, &time_blocked); > + return 0; > +} > + > +static inline void kvm_halt_stats(enum pv_lock_stats type) > +{ > + if (type == PV_HALT_QHEAD) > + add_smp(&halt_qhead_stats, 1); > + else if (type == PV_HALT_QNODE) > + add_smp(&halt_qnode_stats, 1); > + else /* type == PV_HALT_ABORT */ > + add_smp(&halt_abort_stats, 1); > +} > + > +static inline void kvm_lock_stats(enum pv_lock_stats type) > +{ > + if (type ==...
[PATCH v13 10/11] pvqspinlock, x86: Enable PV qspinlock for KVM
2014 Oct 29
0
[PATCH v13 10/11] pvqspinlock, x86: Enable PV qspinlock for KVM
...gfs_create_u32("wake_spur_stats", + 0644, d_spin_debug, &wake_spur_stats); + debugfs_create_u64("time_blocked", + 0644, d_spin_debug, &time_blocked); + return 0; +} + +static inline void kvm_halt_stats(enum pv_lock_stats type) +{ + if (type == PV_HALT_QHEAD) + add_smp(&halt_qhead_stats, 1); + else if (type == PV_HALT_QNODE) + add_smp(&halt_qnode_stats, 1); + else /* type == PV_HALT_ABORT */ + add_smp(&halt_abort_stats, 1); +} + +void kvm_lock_stats(enum pv_lock_stats type) +{ + if (type == PV_WAKE_KICKED) + add_smp(&wake_kick_stats, 1); + else...
[PATCH v13 10/11] pvqspinlock, x86: Enable PV qspinlock for KVM
2014 Oct 29
0
[PATCH v13 10/11] pvqspinlock, x86: Enable PV qspinlock for KVM
...gfs_create_u32("wake_spur_stats", + 0644, d_spin_debug, &wake_spur_stats); + debugfs_create_u64("time_blocked", + 0644, d_spin_debug, &time_blocked); + return 0; +} + +static inline void kvm_halt_stats(enum pv_lock_stats type) +{ + if (type == PV_HALT_QHEAD) + add_smp(&halt_qhead_stats, 1); + else if (type == PV_HALT_QNODE) + add_smp(&halt_qnode_stats, 1); + else /* type == PV_HALT_ABORT */ + add_smp(&halt_abort_stats, 1); +} + +void kvm_lock_stats(enum pv_lock_stats type) +{ + if (type == PV_WAKE_KICKED) + add_smp(&wake_kick_stats, 1); + else...
[PATCH] x86 spinlock: Fix memory corruption on completing completions
2015 Feb 08
0
[PATCH] x86 spinlock: Fix memory corruption on completing completions
On 02/06/2015 06:49 AM, Raghavendra K T wrote: > Paravirt spinlock clears slowpath flag after doing unlock. > As explained by Linus currently it does: > prev = *lock; > add_smp(&lock->tickets.head, TICKET_LOCK_INC); > > /* add_smp() is a full mb() */ > > if (unlikely(lock->tickets.tail & TICKET_SLOWPATH_FLAG)) > __ticket_unlock_slowpath(lock, prev); > > > which is *exactly* the k...
[PATCH] x86 spinlock: Fix memory corruption on completing completions
2015 Feb 08
0
[PATCH] x86 spinlock: Fix memory corruption on completing completions
On 02/06/2015 06:49 AM, Raghavendra K T wrote: > Paravirt spinlock clears slowpath flag after doing unlock. > As explained by Linus currently it does: > prev = *lock; > add_smp(&lock->tickets.head, TICKET_LOCK_INC); > > /* add_smp() is a full mb() */ > > if (unlikely(lock->tickets.tail & TICKET_SLOWPATH_FLAG)) > __ticket_unlock_slowpath(lock, prev); > > > which is *exactly* the k...
[PATCH for stable] x86/spinlocks/paravirt: Fix memory corruption on unlock
2015 Feb 24
2
[PATCH for stable] x86/spinlocks/paravirt: Fix memory corruption on unlock
Paravirt spinlock clears slowpath flag after doing unlock. As explained by Linus currently it does: prev = *lock; add_smp(&lock->tickets.head, TICKET_LOCK_INC); /* add_smp() is a full mb() */ if (unlikely(lock->tickets.tail & TICKET_SLOWPATH_FLAG)) __ticket_unlock_slowpath(lock, prev); which is *exactly* the kind of things you cannot do with spin...
[PATCH for stable] x86/spinlocks/paravirt: Fix memory corruption on unlock
2015 Feb 24
2
[PATCH for stable] x86/spinlocks/paravirt: Fix memory corruption on unlock
Paravirt spinlock clears slowpath flag after doing unlock. As explained by Linus currently it does: prev = *lock; add_smp(&lock->tickets.head, TICKET_LOCK_INC); /* add_smp() is a full mb() */ if (unlikely(lock->tickets.tail & TICKET_SLOWPATH_FLAG)) __ticket_unlock_slowpath(lock, prev); which is *exactly* the kind of things you cannot do with spin...
[PATCH v10 18/19] pvqspinlock, x86: Enable PV qspinlock PV for KVM
2014 May 07
0
[PATCH v10 18/19] pvqspinlock, x86: Enable PV qspinlock PV for KVM
...gfs_create_u32("wake_spur_stats", + 0644, d_spin_debug, &wake_spur_stats); + debugfs_create_u64("time_blocked", + 0644, d_spin_debug, &time_blocked); + return 0; +} + +static inline void kvm_halt_stats(enum pv_lock_stats type) +{ + if (type == PV_HALT_QHEAD) + add_smp(&halt_qhead_stats, 1); + else if (type == PV_HALT_QNODE) + add_smp(&halt_qnode_stats, 1); + else /* type == PV_HALT_ABORT */ + add_smp(&halt_abort_stats, 1); +} + +static inline void kvm_lock_stats(enum pv_lock_stats type) +{ + if (type == PV_WAKE_KICKED) + add_smp(&wake_kick_sta...
[PATCH] x86 spinlock: Fix memory corruption on completing completions
2015 Feb 06
0
[PATCH] x86 spinlock: Fix memory corruption on completing completions
...ICKET_SLOWPATH_FLAG && > - static_key_false(&paravirt_ticketlocks_enabled)) { > - arch_spinlock_t prev; > + static_key_false(&paravirt_ticketlocks_enabled)) { > + __ticket_t prev_head; > > - prev = *lock; > + prev_head = lock->tickets.head; > add_smp(&lock->tickets.head, TICKET_LOCK_INC); > > /* add_smp() is a full mb() */ > > - if (unlikely(lock->tickets.tail & TICKET_SLOWPATH_FLAG)) > - __ticket_unlock_slowpath(lock, prev); > + if (unlikely(lock->tickets.tail & TICKET_SLOWPATH_FLAG)) { > +...
[PATCH] x86 spinlock: Fix memory corruption on completing completions
2015 Feb 06
0
[PATCH] x86 spinlock: Fix memory corruption on completing completions
...ICKET_SLOWPATH_FLAG && > - static_key_false(&paravirt_ticketlocks_enabled)) { > - arch_spinlock_t prev; > + static_key_false(&paravirt_ticketlocks_enabled)) { > + __ticket_t prev_head; > > - prev = *lock; > + prev_head = lock->tickets.head; > add_smp(&lock->tickets.head, TICKET_LOCK_INC); > > /* add_smp() is a full mb() */ > > - if (unlikely(lock->tickets.tail & TICKET_SLOWPATH_FLAG)) > - __ticket_unlock_slowpath(lock, prev); > + if (unlikely(lock->tickets.tail & TICKET_SLOWPATH_FLAG)) { > +...
[PATCH V5] x86 spinlock: Fix memory corruption on completing completions
2015 Feb 15
7
[PATCH V5] x86 spinlock: Fix memory corruption on completing completions
Paravirt spinlock clears slowpath flag after doing unlock. As explained by Linus currently it does: prev = *lock; add_smp(&lock->tickets.head, TICKET_LOCK_INC); /* add_smp() is a full mb() */ if (unlikely(lock->tickets.tail & TICKET_SLOWPATH_FLAG)) __ticket_unlock_slowpath(lock, prev); which is *exactly* the kind of things you cannot do with spin...
[PATCH V5] x86 spinlock: Fix memory corruption on completing completions
2015 Feb 15
7
[PATCH V5] x86 spinlock: Fix memory corruption on completing completions
Paravirt spinlock clears slowpath flag after doing unlock. As explained by Linus currently it does: prev = *lock; add_smp(&lock->tickets.head, TICKET_LOCK_INC); /* add_smp() is a full mb() */ if (unlikely(lock->tickets.tail & TICKET_SLOWPATH_FLAG)) __ticket_unlock_slowpath(lock, prev); which is *exactly* the kind of things you cannot do with spin...