IB/hfi1: Remove duplicate definitions of num_user_pages() function

num_user_pages() function has been defined in both user_exp_rcv.c file
and user_sdma.c file. Move the function definition to a header file so
there is only one definition in the source repo.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Harish Chegondi <harish.chegondi@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/hw/hfi1/user_exp_rcv.c b/drivers/infiniband/hw/hfi1/user_exp_rcv.c
index 04be178..026790e 100644 (file)
--- a/drivers/infiniband/hw/hfi1/user_exp_rcv.c
+++ b/drivers/infiniband/hw/hfi1/user_exp_rcv.c
@@ -67,11 +67,6 @@ struct tid_pageset {
        u16 count;
 };
 
-#define num_user_pages(vaddr, len)                                    \
-       (1 + (((((unsigned long)(vaddr) +                              \
-                (unsigned long)(len) - 1) & PAGE_MASK) -              \
-              ((unsigned long)vaddr & PAGE_MASK)) >> PAGE_SHIFT))
-
 static void unlock_exp_tids(struct hfi1_ctxtdata *uctxt,
                            struct exp_tid_set *set,
                            struct hfi1_filedata *fd);

diff --git a/drivers/infiniband/hw/hfi1/user_exp_rcv.h b/drivers/infiniband/hw/hfi1/user_exp_rcv.h
index 8c4eb5d..7461d11 100644 (file)
--- a/drivers/infiniband/hw/hfi1/user_exp_rcv.h
+++ b/drivers/infiniband/hw/hfi1/user_exp_rcv.h
@@ -60,6 +60,15 @@ struct tid_user_buf {
        unsigned int n_psets;
 };
 
+static inline int num_user_pages(unsigned long addr,
+                                unsigned long len)
+{
+       const unsigned long spage = addr & PAGE_MASK;
+       const unsigned long epage = (addr + len - 1) & PAGE_MASK;
+
+       return 1 + ((epage - spage) >> PAGE_SHIFT);
+}
+
 int hfi1_user_exp_rcv_init(struct hfi1_filedata *fd,
                           struct hfi1_ctxtdata *uctxt);
 void hfi1_user_exp_rcv_free(struct hfi1_filedata *fd);

diff --git a/drivers/infiniband/hw/hfi1/user_sdma.c b/drivers/infiniband/hw/hfi1/user_sdma.c
index a3a9925..2837407 100644 (file)
--- a/drivers/infiniband/hw/hfi1/user_sdma.c
+++ b/drivers/infiniband/hw/hfi1/user_sdma.c
@@ -246,7 +246,6 @@ struct user_sdma_txreq {
 
 static int user_sdma_send_pkts(struct user_sdma_request *req,
                               unsigned maxpkts);
-static int num_user_pages(const struct iovec *iov);
 static void user_sdma_txreq_cb(struct sdma_txreq *txreq, int status);
 static inline void pq_update(struct hfi1_user_sdma_pkt_q *pq);
 static void user_sdma_free_request(struct user_sdma_request *req, bool unpin);
@@ -1101,19 +1100,6 @@ free_tx:
        return ret;
 }
 
-/*
- * How many pages in this iovec element?
- */
-static inline int num_user_pages(const struct iovec *iov)
-{
-       const unsigned long addr  = (unsigned long)iov->iov_base;
-       const unsigned long len   = iov->iov_len;
-       const unsigned long spage = addr & PAGE_MASK;
-       const unsigned long epage = (addr + len - 1) & PAGE_MASK;
-
-       return 1 + ((epage - spage) >> PAGE_SHIFT);
-}
-
 static u32 sdma_cache_evict(struct hfi1_user_sdma_pkt_q *pq, u32 npages)
 {
        struct evict_data evict_data;
@@ -1182,6 +1168,7 @@ static int pin_vector_pages(struct user_sdma_request *req,
        struct hfi1_user_sdma_pkt_q *pq = req->pq;
        struct sdma_mmu_node *node = NULL;
        struct mmu_rb_node *rb_node;
+       struct iovec *iov;
        bool extracted;
 
        extracted =
@@ -1210,7 +1197,8 @@ static int pin_vector_pages(struct user_sdma_request *req,
                atomic_set(&node->refcount, 0);
        }
 
-       npages = num_user_pages(&iovec->iov);
+       iov = &iovec->iov;
+       npages = num_user_pages((unsigned long)iov->iov_base, iov->iov_len);
        if (node->npages < npages) {
                pinned = pin_sdma_pages(req, iovec, node, npages);
                if (pinned < 0) {