From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dennis Dalessandro Subject: [PATCH for-next 09/12] IB/hfi1: Inline common calculation Date: Tue, 26 Sep 2017 07:00:56 -0700 Message-ID: <20170926140055.15601.9019.stgit@scvm10.sc.intel.com> References: <20170926135843.15601.95865.stgit@scvm10.sc.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20170926135843.15601.95865.stgit-9QXIwq+3FY+1XWohqUldA0EOCMrvLtNR@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, "Michael J. Ruhl" , Ira Weiny List-Id: linux-rdma@vger.kernel.org From: Michael J. Ruhl 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 Signed-off-by: Michael J. Ruhl Signed-off-by: Dennis Dalessandro --- drivers/infiniband/hw/hfi1/file_ops.c | 21 ++++++++------------- drivers/infiniband/hw/hfi1/hfi.h | 6 ++++++ drivers/infiniband/hw/hfi1/user_exp_rcv.c | 6 ++---- 3 files changed, 16 insertions(+), 17 deletions(-) diff --git a/drivers/infiniband/hw/hfi1/file_ops.c b/drivers/infiniband/hw/hfi1/file_ops.c index d9a1e98..c200a5c 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); @@ -1392,9 +1390,8 @@ 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); @@ -1485,14 +1482,13 @@ 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); @@ -1558,8 +1554,7 @@ 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)) diff --git a/drivers/infiniband/hw/hfi1/hfi.h b/drivers/infiniband/hw/hfi1/hfi.h index 611eeba..fc1ee8d 100644 --- a/drivers/infiniband/hw/hfi1/hfi.h +++ b/drivers/infiniband/hw/hfi1/hfi.h @@ -1374,6 +1374,12 @@ struct hfi1_filedata { extern u32 hfi1_cpulist_count; extern unsigned long *hfi1_cpulist; +static inline unsigned long uctxt_offset(struct hfi1_ctxtdata *uctxt) +{ + return (uctxt->ctxt - uctxt->dd->first_dyn_alloc_ctxt) * + HFI1_MAX_SHARED_CTXTS; +} + int hfi1_init(struct hfi1_devdata *dd, int reinit); int hfi1_count_active_units(void); diff --git a/drivers/infiniband/hw/hfi1/user_exp_rcv.c b/drivers/infiniband/hw/hfi1/user_exp_rcv.c index 6f6c14d..ff9ad69 100644 --- a/drivers/infiniband/hw/hfi1/user_exp_rcv.c +++ b/drivers/infiniband/hw/hfi1/user_exp_rcv.c @@ -542,8 +542,7 @@ int hfi1_user_exp_rcv_invalid(struct hfi1_filedata *fd, { struct hfi1_ctxtdata *uctxt = fd->uctxt; unsigned long *ev = uctxt->dd->events + - (((uctxt->ctxt - uctxt->dd->first_dyn_alloc_ctxt) * - HFI1_MAX_SHARED_CTXTS) + fd->subctxt); + (uctxt_offset(uctxt) + fd->subctxt); u32 *array; int ret = 0; @@ -942,8 +941,7 @@ static int tid_rb_invalidate(void *arg, struct mmu_rb_node *mnode) * process in question. */ ev = uctxt->dd->events + - (((uctxt->ctxt - uctxt->dd->first_dyn_alloc_ctxt) * - HFI1_MAX_SHARED_CTXTS) + fdata->subctxt); + (uctxt_offset(uctxt) + fdata->subctxt); set_bit(_HFI1_EVENT_TID_MMU_NOTIFY_BIT, ev); } fdata->invalid_tid_idx++; -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html