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ddk: 3.19-rc1

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git-svn-id: svn://kolibrios.org@5270 a494cfbc-eb01-0410-851d-a64ba20cac60
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Sergey Semyonov (Serge)
2014-12-27 15:42:08 +00:00
parent bade30c7b8
commit 16bc56fa96
228 changed files with 19878 additions and 3572 deletions
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80
drivers/include/linux/reservation.h
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@@ -40,23 +40,103 @@
#define _LINUX_RESERVATION_H
#include <linux/ww_mutex.h>
#include <linux/fence.h>
#include <linux/slab.h>
#include <linux/seqlock.h>
#include <linux/rcupdate.h>
extern struct ww_class reservation_ww_class;
extern struct lock_class_key reservation_seqcount_class;
extern const char reservation_seqcount_string[];
struct reservation_object_list {
struct rcu_head rcu;
u32 shared_count, shared_max;
struct fence __rcu *shared[];
};
struct reservation_object {
struct ww_mutex lock;
seqcount_t seq;
struct fence __rcu *fence_excl;
struct reservation_object_list __rcu *fence;
struct reservation_object_list *staged;
};
#define reservation_object_held(obj) lockdep_is_held(&(obj)->lock.base)
#define reservation_object_assert_held(obj) \
lockdep_assert_held(&(obj)->lock.base)
static inline void
reservation_object_init(struct reservation_object *obj)
{
ww_mutex_init(&obj->lock, &reservation_ww_class);
__seqcount_init(&obj->seq, reservation_seqcount_string, &reservation_seqcount_class);
RCU_INIT_POINTER(obj->fence, NULL);
RCU_INIT_POINTER(obj->fence_excl, NULL);
obj->staged = NULL;
}
static inline void
reservation_object_fini(struct reservation_object *obj)
{
int i;
struct reservation_object_list *fobj;
struct fence *excl;
/*
* This object should be dead and all references must have
* been released to it, so no need to be protected with rcu.
*/
excl = rcu_dereference_protected(obj->fence_excl, 1);
if (excl)
fence_put(excl);
fobj = rcu_dereference_protected(obj->fence, 1);
if (fobj) {
for (i = 0; i < fobj->shared_count; ++i)
fence_put(rcu_dereference_protected(fobj->shared[i], 1));
kfree(fobj);
}
kfree(obj->staged);
ww_mutex_destroy(&obj->lock);
}
static inline struct reservation_object_list *
reservation_object_get_list(struct reservation_object *obj)
{
return rcu_dereference_protected(obj->fence,
reservation_object_held(obj));
}
static inline struct fence *
reservation_object_get_excl(struct reservation_object *obj)
{
return rcu_dereference_protected(obj->fence_excl,
reservation_object_held(obj));
}
int reservation_object_reserve_shared(struct reservation_object *obj);
void reservation_object_add_shared_fence(struct reservation_object *obj,
struct fence *fence);
void reservation_object_add_excl_fence(struct reservation_object *obj,
struct fence *fence);
int reservation_object_get_fences_rcu(struct reservation_object *obj,
struct fence **pfence_excl,
unsigned *pshared_count,
struct fence ***pshared);
long reservation_object_wait_timeout_rcu(struct reservation_object *obj,
bool wait_all, bool intr,
unsigned long timeout);
bool reservation_object_test_signaled_rcu(struct reservation_object *obj,
bool test_all);
#endif /* _LINUX_RESERVATION_H */