Commit Graph

3 Commits

Author SHA1 Message Date
Daniel Verkamp
4f677a1d4c nvme: only invoke request free macro in one place
Rename the nvme_free_request macro to nvme_dealloc_request to match
nvme_alloc_request and add a wrapper function to nvme.c so that the
macro contents are only expanded once.

The DPDK nvme_impl.h uses rte_mempool_put(), which generates a large
amount of code inline.  Moving this macro expansion to a wrapper
function avoids inlining it in the multiple places nvme_free_request()
gets called, most of which are error handling cases that are not in the
hot I/O path.

Change-Id: I64ea9c39ba47e26672eee8d5058f1489e07eee5b
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
2015-10-20 07:43:41 -07:00
Daniel Verkamp
325b7db392 nvme: use rte_memcpy() to submit commands
GCC generates a series of 64-bit MOV instructions for the memcpy() into
the submission queue.  We can do better with 128-bit SSE2 instructions.

DPDK already has a memcpy implementation that is optimized for small
inline copies, so use it instead of memcpy.

Change-Id: I5f09259b4d5cb089ace4a8ea6d2078c03fee84f3
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
2015-09-25 09:33:42 -07:00
Daniel Verkamp
1010fb3af1 SPDK: Initial check-in
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
2015-09-21 08:52:41 -07:00