diff options
| author | Artemy Kovalyov <artemyko@mellanox.com> | 2017-04-05 09:23:50 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-04-25 22:40:28 +0300 |
| commit | 3e7e1193e28a1428e857f3f44870ec2dbd615e6a (patch) | |
| tree | 06f12414a3407f4d60b424b806c0451e0309d344 /drivers/infiniband/hw/cxgb3/iwch_provider.c | |
| parent | 8d2216be285135c7281e09dc07738b62782fad9c (diff) | |
| download | linux-3e7e1193e28a1428e857f3f44870ec2dbd615e6a.tar.xz | |
IB: Replace ib_umem page_size by page_shift
Size of pages are held by struct ib_umem in page_size field.
It is better to store it as an exponent, because page size by nature
is always power-of-two and used as a factor, divisor or ilog2's argument.
The conversion of page_size to be page_shift allows to have portable
code and avoid following error while compiling on ARM:
ERROR: "__aeabi_uldivmod" [drivers/infiniband/core/ib_core.ko] undefined!
CC: Selvin Xavier <selvin.xavier@broadcom.com>
CC: Steve Wise <swise@chelsio.com>
CC: Lijun Ou <oulijun@huawei.com>
CC: Shiraz Saleem <shiraz.saleem@intel.com>
CC: Adit Ranadive <aditr@vmware.com>
CC: Dennis Dalessandro <dennis.dalessandro@intel.com>
CC: Ram Amrani <Ram.Amrani@Cavium.com>
Signed-off-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Acked-by: Ram Amrani <Ram.Amrani@cavium.com>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Acked-by: Selvin Xavier <selvin.xavier@broadcom.com>
Acked-by: Selvin Xavier <selvin.xavier@broadcom.com>
Acked-by: Adit Ranadive <aditr@vmware.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/cxgb3/iwch_provider.c')
| -rw-r--r-- | drivers/infiniband/hw/cxgb3/iwch_provider.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c index 8f4b408c8bb0..790d7c79fe3e 100644 --- a/drivers/infiniband/hw/cxgb3/iwch_provider.c +++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c @@ -581,7 +581,7 @@ static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, return ERR_PTR(err); } - shift = ffs(mhp->umem->page_size) - 1; + shift = mhp->umem->page_shift; n = mhp->umem->nmap; @@ -601,7 +601,7 @@ static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, len = sg_dma_len(sg) >> shift; for (k = 0; k < len; ++k) { pages[i++] = cpu_to_be64(sg_dma_address(sg) + - mhp->umem->page_size * k); + (k << shift)); if (i == PAGE_SIZE / sizeof *pages) { err = iwch_write_pbl(mhp, pages, i, n); if (err) |