IB/hfi1: Re-factor MMU notification code
The MMU notification code added to the
expected receive side has been re-factored and
split into it's own file. This was done in
order to make the code more general and, therefore,
usable by other parts of the driver.
The caching behavior remains the same. However,
the handling of the RB tree (insertion, deletions,
and searching) as well as the MMU invalidation
processing is now handled by functions in the
mmu_rb.[ch] files.
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Jubin John <jubin.john@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/drivers/staging/rdma/hfi1/hfi.h b/drivers/staging/rdma/hfi1/hfi.h
index 5722883..78c8e24 100644
--- a/drivers/staging/rdma/hfi1/hfi.h
+++ b/drivers/staging/rdma/hfi1/hfi.h
@@ -1179,6 +1179,7 @@
#define PT_EAGER 1
#define PT_INVALID 2
+struct tid_rb_node;
struct mmu_rb_node;
/* Private data for file operations */
@@ -1189,20 +1190,17 @@
struct hfi1_user_sdma_pkt_q *pq;
/* for cpu affinity; -1 if none */
int rec_cpu_num;
- struct mmu_notifier mn;
struct rb_root tid_rb_root;
- struct mmu_rb_node **entry_to_rb;
+ struct tid_rb_node **entry_to_rb;
spinlock_t tid_lock; /* protect tid_[limit,used] counters */
u32 tid_limit;
u32 tid_used;
- spinlock_t rb_lock; /* protect tid_rb_root RB tree */
u32 *invalid_tids;
u32 invalid_tid_idx;
- spinlock_t invalid_lock; /* protect the invalid_tids array */
- int (*mmu_rb_insert)(struct hfi1_filedata *, struct rb_root *,
- struct mmu_rb_node *);
- void (*mmu_rb_remove)(struct hfi1_filedata *, struct rb_root *,
- struct mmu_rb_node *);
+ /* protect invalid_tids array and invalid_tid_idx */
+ spinlock_t invalid_lock;
+ int (*mmu_rb_insert)(struct rb_root *, struct mmu_rb_node *);
+ void (*mmu_rb_remove)(struct rb_root *, struct mmu_rb_node *);
};
extern struct list_head hfi1_dev_list;