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| author | Chuck Lever <chuck.lever@oracle.com> | 2015-03-30 20:35:44 +0200 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2015-03-31 15:52:53 +0200 |
| commit | d654788e98f74f2df8dfc6079fa314938f739486 (patch) | |
| tree | c1ce64224f93f867ba4220f3f4cebb0b3f0fd9ee /net/sunrpc/xprtrdma/fmr_ops.c | |
| parent | xprtrdma: Handle non-SEND completions via a callout (diff) | |
| download | linux-d654788e98f74f2df8dfc6079fa314938f739486.tar.xz linux-d654788e98f74f2df8dfc6079fa314938f739486.zip | |
xprtrdma: Make rpcrdma_{un}map_one() into inline functions
These functions are called in a loop for each page transferred via
RDMA READ or WRITE. Extract loop invariants and inline them to
reduce CPU overhead.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: Devesh Sharma <Devesh.Sharma@Emulex.Com>
Tested-by: Meghana Cheripady <Meghana.Cheripady@Emulex.Com>
Tested-by: Veeresh U. Kokatnur <veereshuk@chelsio.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc/xprtrdma/fmr_ops.c')
| -rw-r--r-- | net/sunrpc/xprtrdma/fmr_ops.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/net/sunrpc/xprtrdma/fmr_ops.c b/net/sunrpc/xprtrdma/fmr_ops.c index e8a9837f8d63..a91ba2c8ef1e 100644 --- a/net/sunrpc/xprtrdma/fmr_ops.c +++ b/net/sunrpc/xprtrdma/fmr_ops.c @@ -85,6 +85,8 @@ fmr_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg, int nsegs, bool writing) { struct rpcrdma_ia *ia = &r_xprt->rx_ia; + struct ib_device *device = ia->ri_id->device; + enum dma_data_direction direction = rpcrdma_data_dir(writing); struct rpcrdma_mr_seg *seg1 = seg; struct rpcrdma_mw *mw = seg1->rl_mw; u64 physaddrs[RPCRDMA_MAX_DATA_SEGS]; @@ -97,7 +99,7 @@ fmr_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg, if (nsegs > RPCRDMA_MAX_FMR_SGES) nsegs = RPCRDMA_MAX_FMR_SGES; for (i = 0; i < nsegs;) { - rpcrdma_map_one(ia, seg, writing); + rpcrdma_map_one(device, seg, direction); physaddrs[i] = seg->mr_dma; len += seg->mr_len; ++seg; @@ -123,7 +125,7 @@ out_maperr: __func__, len, (unsigned long long)seg1->mr_dma, pageoff, i, rc); while (i--) - rpcrdma_unmap_one(ia, --seg); + rpcrdma_unmap_one(device, --seg); return rc; } @@ -135,14 +137,16 @@ fmr_op_unmap(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg) { struct rpcrdma_ia *ia = &r_xprt->rx_ia; struct rpcrdma_mr_seg *seg1 = seg; + struct ib_device *device; int rc, nsegs = seg->mr_nsegs; LIST_HEAD(l); list_add(&seg1->rl_mw->r.fmr->list, &l); rc = ib_unmap_fmr(&l); read_lock(&ia->ri_qplock); + device = ia->ri_id->device; while (seg1->mr_nsegs--) - rpcrdma_unmap_one(ia, seg++); + rpcrdma_unmap_one(device, seg++); read_unlock(&ia->ri_qplock); if (rc) goto out_err; |