/* * netsniff-ng - the packet sniffing beast * Copyright 2011 Daniel Borkmann. * Subject to the GPL, version 2. */ #ifndef LOCKING_H #define LOCKING_H #include #include "built_in.h" struct spinlock { pthread_spinlock_t lock; }; struct mutexlock { pthread_mutex_t lock; }; struct rwlock { pthread_rwlock_t lock; }; static inline int spinlock_init(struct spinlock *l) { return -pthread_spin_init(&l->lock, 0); } static inline void spinlock_destroy(struct spinlock *l) { pthread_spin_destroy(&l->lock); } static inline void spinlock_lock(struct spinlock *l) { pthread_spin_lock(&l->lock); } static inline void spinlock_unlock(struct spinlock *l) { pthread_spin_unlock(&l->lock); } static inline int mutexlock_init(struct mutexlock *l) { return -pthread_mutex_init(&l->lock, 0); } static inline void mutexlock_destroy(struct mutexlock *l) { pthread_mutex_destroy(&l->lock); } static inline void mutexlock_lock(struct mutexlock *l) { pthread_mutex_lock(&l->lock); } static inline void mutexlock_unlock(struct mutexlock *l) { pthread_mutex_unlock(&l->lock); } static inline int rwlock_init(struct rwlock *l) { return -pthread_rwlock_init(&l->lock, 0); } static inline int rwlock_init2(struct rwlock *l, pthread_rwlockattr_t *attr) { return -pthread_rwlock_init(&l->lock, attr); } static inline void rwlock_destroy(struct rwlock *l) { pthread_rwlock_destroy(&l->lock); } static inline void rwlock_rd_lock(struct rwlock *l) { pthread_rwlock_rdlock(&l->lock); } static inline void rwlock_wr_lock(struct rwlock *l) { pthread_rwlock_wrlock(&l->lock); } static inline void rwlock_unlock(struct rwlock *l) { pthread_rwlock_unlock(&l->lock); } #endif /* LOCKING_H */ 785b589f686725ff5bc3b9b25'>refslogtreecommitdiff
path: root/include/kvm/arm_pmu.h
diff options
context:
space:
mode:
authorThomas Gleixner <tglx@linutronix.de>2017-01-31 09:37:34 +0100
committerThomas Gleixner <tglx@linutronix.de>2017-01-31 21:47:58 +0100
commit0becc0ae5b42828785b589f686725ff5bc3b9b25 (patch)
treebe6d0e1f37c38ed0a7dd5da2d4b1e93f0fb43101 /include/kvm/arm_pmu.h
parent24c2503255d35c269b67162c397a1a1c1e02f6ce (diff)
x86/mce: Make timer handling more robust
Erik reported that on a preproduction hardware a CMCI storm triggers the BUG_ON in add_timer_on(). The reason is that the per CPU MCE timer is started by the CMCI logic before the MCE CPU hotplug callback starts the timer with add_timer_on(). So the timer is already queued which triggers the BUG. Using add_timer_on() is pretty pointless in this code because the timer is strictlty per CPU, initialized as pinned and all operations which arm the timer happen on the CPU to which the timer belongs. Simplify the whole machinery by using mod_timer() instead of add_timer_on() which avoids the problem because mod_timer() can handle already queued timers. Use __start_timer() everywhere so the earliest armed expiry time is preserved. Reported-by: Erik Veijola <erik.veijola@intel.com> Tested-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Borislav Petkov <bp@alien8.de> Cc: Tony Luck <tony.luck@intel.com> Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701310936080.3457@nanos Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/kvm/arm_pmu.h')