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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>
This commit is contained in:
Harish Chegondi 2017-08-21 18:27:16 -07:00 committed by Doug Ledford
parent 04a646df12
commit ddd3affb50
3 changed files with 12 additions and 20 deletions
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5
drivers/infiniband/hw/hfi1/user_exp_rcv.c
View File

@ -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);

9
drivers/infiniband/hw/hfi1/user_exp_rcv.h
View File

@ -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);

18
drivers/infiniband/hw/hfi1/user_sdma.c
View File

@ -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) {