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| author |   Jason Gunthorpe <jgg@nvidia.com> | 2020-09-04 19:41:44 -0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2020-09-09 15:33:17 -0300 |
| commit | 3361c29e9279e682c0e9a7d7461b4e3bbc77830b (patch) | |
| tree | a4c62c20f951a7cb9f009b0716f25d74b5f4fe81 /include/rdma/ib_verbs.h | |
| parent | RDMA/umem: Prevent small pages from being returned by ib_umem_find_best_pgsz() (diff) | |
| download | linux-dev-3361c29e9279e682c0e9a7d7461b4e3bbc77830b.tar.xz linux-dev-3361c29e9279e682c0e9a7d7461b4e3bbc77830b.zip | |
RDMA/umem: Use simpler logic for ib_umem_find_best_pgsz()
The calculation in rdma_find_pg_bit() is fairly complicated, and the
function is never called anywhere else. Inline a simpler version into
ib_umem_find_best_pgsz()
Link: https://lore.kernel.org/r/3-v2-270386b7e60b+28f4-umem_1_jgg@nvidia.com
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'include/rdma/ib_verbs.h')
| -rw-r--r-- | include/rdma/ib_verbs.h | 24 |
1 files changed, 0 insertions, 24 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 29a36ec662b5..97658d706aa1 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -3336,30 +3336,6 @@ static inline bool rdma_cap_read_inv(struct ib_device *dev, u32 port_num) } /** - * rdma_find_pg_bit - Find page bit given address and HW supported page sizes - * - * @addr: address - * @pgsz_bitmap: bitmap of HW supported page sizes - */ -static inline unsigned int rdma_find_pg_bit(unsigned long addr, - unsigned long pgsz_bitmap) -{ - unsigned long align; - unsigned long pgsz; - - align = addr & -addr; - - /* Find page bit such that addr is aligned to the highest supported - * HW page size - */ - pgsz = pgsz_bitmap & ~(-align << 1); - if (!pgsz) - return __ffs(pgsz_bitmap); - - return __fls(pgsz); -} - -/** * rdma_core_cap_opa_port - Return whether the RDMA Port is OPA or not. * @device: Device * @port_num: 1 based Port number |