IB/hfi1: Inline common calculation
Calculating the offset to a context is done several times throughout
the code. Create a common inlined function for doing this
calculation.
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@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/file_ops.c b/drivers/infiniband/hw/hfi1/file_ops.c
index 2bc8926..668c9bc 100644
--- a/drivers/infiniband/hw/hfi1/file_ops.c
+++ b/drivers/infiniband/hw/hfi1/file_ops.c
@@ -595,9 +595,8 @@ static int hfi1_file_mmap(struct file *fp, struct vm_area_struct *vma)
* Use the page where this context's flags are. User level
* knows where it's own bitmap is within the page.
*/
- memaddr = (unsigned long)(dd->events +
- ((uctxt->ctxt - dd->first_dyn_alloc_ctxt) *
- HFI1_MAX_SHARED_CTXTS)) & PAGE_MASK;
+ memaddr = (unsigned long)
+ (dd->events + uctxt_offset(uctxt)) & PAGE_MASK;
memlen = PAGE_SIZE;
/*
* v3.7 removes VM_RESERVED but the effect is kept by
@@ -779,8 +778,7 @@ static int hfi1_file_close(struct inode *inode, struct file *fp)
* Clear any left over, unhandled events so the next process that
* gets this context doesn't get confused.
*/
- ev = dd->events + ((uctxt->ctxt - dd->first_dyn_alloc_ctxt) *
- HFI1_MAX_SHARED_CTXTS) + fdata->subctxt;
+ ev = dd->events + uctxt_offset(uctxt) + fdata->subctxt;
*ev = 0;
spin_lock_irqsave(&dd->uctxt_lock, flags);
@@ -1389,9 +1387,8 @@ static int get_base_info(struct hfi1_filedata *fd, void __user *ubase,
*/
binfo.user_regbase = HFI1_MMAP_TOKEN(UREGS, uctxt->ctxt,
fd->subctxt, 0);
- offset = offset_in_page((((uctxt->ctxt - dd->first_dyn_alloc_ctxt) *
- HFI1_MAX_SHARED_CTXTS) + fd->subctxt) *
- sizeof(*dd->events));
+ offset = offset_in_page((uctxt_offset(uctxt) + fd->subctxt) *
+ sizeof(*dd->events));
binfo.events_bufbase = HFI1_MMAP_TOKEN(EVENTS, uctxt->ctxt,
fd->subctxt,
offset);
@@ -1482,14 +1479,13 @@ int hfi1_set_uevent_bits(struct hfi1_pportdata *ppd, const int evtbit)
ctxt++) {
uctxt = hfi1_rcd_get_by_index(dd, ctxt);
if (uctxt) {
- unsigned long *evs = dd->events +
- (uctxt->ctxt - dd->first_dyn_alloc_ctxt) *
- HFI1_MAX_SHARED_CTXTS;
+ unsigned long *evs;
int i;
/*
* subctxt_cnt is 0 if not shared, so do base
* separately, first, then remaining subctxt, if any
*/
+ evs = dd->events + uctxt_offset(uctxt);
set_bit(evtbit, evs);
for (i = 1; i < uctxt->subctxt_cnt; i++)
set_bit(evtbit, evs + i);
@@ -1555,8 +1551,7 @@ static int user_event_ack(struct hfi1_ctxtdata *uctxt, u16 subctxt,
if (!dd->events)
return 0;
- evs = dd->events + ((uctxt->ctxt - dd->first_dyn_alloc_ctxt) *
- HFI1_MAX_SHARED_CTXTS) + subctxt;
+ evs = dd->events + uctxt_offset(uctxt) + subctxt;
for (i = 0; i <= _HFI1_MAX_EVENT_BIT; i++) {
if (!test_bit(i, &events))