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Daniel Verkamp 639fee5f13 nvme: remove initialization of nvme_reqest::parent 
The parent field is in the cache line of nvme_request that is only
supposed to be accessed for split (child) I/Os.  All accesses to parent
are done from child-specific calls now, so it does not need to be
initialized in the common case of a non-split I/O.
nvme_request_add_child() will set parent when splitting occurs.

Change-Id: Ib86c16ba1ea2ce32f62079831101da2a099047af
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
2016-02-18 15:15:36 -07:00
doc doc: add spdk/ path to Doxygen indexes 2016-02-17 12:18:27 -07:00
examples ioat: add spdk_ prefixes 2016-02-11 12:35:57 -07:00
include/spdk spdk: add NVMe controller memory buffer definitions 2016-02-18 10:31:23 +08:00
lib nvme: remove initialization of nvme_reqest::parent 2016-02-18 15:15:36 -07:00
mk SPDK: Support configuring libpciaccess library 2016-02-04 17:30:09 -07:00
scripts unbind.sh: fix ioat unbind to work with 'set -e' 2016-02-08 09:50:57 -07:00
test nvme: add spdk_ prefix 2016-02-10 11:27:45 -07:00
.astylerc build: check formatting with astyle 2015-09-23 09:05:51 -07:00
.gitignore build: add CONFIG_COVERAGE code coverage option 2015-11-02 14:40:49 -07:00
.travis.yml build: add Travis CI integration 2015-11-04 11:05:59 -07:00
autobuild.sh spdk: add the ioat_kperf test tool to autobuild system 2016-01-22 07:58:13 -07:00
autopackage.sh CONFIG: allow overriding options in make command 2015-10-22 12:24:57 -07:00
autotest.sh spdk: add the ioat_kperf test tool to autobuild system 2016-01-22 07:58:13 -07:00
CONFIG SPDK: Support configuring libpciaccess library 2016-02-04 17:30:09 -07:00
LICENSE Remove year from copyright headers. 2016-01-28 08:54:18 -07:00
Makefile Remove year from copyright headers. 2016-01-28 08:54:18 -07:00
PORTING.md Add porting guide. 2015-09-28 09:07:19 -07:00
README.md README: add libaio dependency 2016-01-21 10:47:55 -07:00
unittest.sh ioat: add user-mode Intel I/OAT driver 2015-12-09 10:14:15 -07:00

README.md

Storage Performance Development Kit

Build Status

SPDK on 01.org

The Storage Performance Development Kit (SPDK) provides a set of tools and libraries for writing high performance, scalable, user-mode storage applications. It achieves high performance by moving all of the necessary drivers into userspace and operating in a polled mode instead of relying on interrupts, which avoids kernel context switches and eliminates interrupt handling overhead.

Documentation

Doxygen API documentation

Porting Guide

Prerequisites

To build SPDK, some dependencies must be installed.

Fedora/CentOS:

  • gcc
  • libpciaccess-devel
  • CUnit-devel
  • libaio-devel

Ubuntu/Debian:

  • gcc
  • libpciaccess-dev
  • make
  • libcunit1-dev
  • libaio-dev

FreeBSD:

  • gcc
  • libpciaccess
  • gmake
  • cunit

Additionally, DPDK is required.

1) cd /path/to/spdk
2) wget http://dpdk.org/browse/dpdk/snapshot/dpdk-2.2.0.tar.gz
3) tar xfz dpdk-2.2.0.tar.gz
4) cd dpdk-2.2.0

Linux:

5) make install T=x86_64-native-linuxapp-gcc DESTDIR=.

FreeBSD:

5) gmake install T=x86_64-native-bsdapp-clang DESTDIR=.

Building

Once the prerequisites are installed, run 'make' within the SPDK directory to build the SPDK libraries and examples.

make DPDK_DIR=/path/to/dpdk

If you followed the instructions above for building DPDK:

Linux:

make DPDK_DIR=./dpdk-2.2.0/x86_64-native-linuxapp-gcc

FreeBSD:

gmake DPDK_DIR=./dpdk-2.2.0/x86_64-native-bsdapp-clang

Hugepages and Device Binding

Before running an SPDK application, some hugepages must be allocated and any NVMe and I/OAT devices must be unbound from the native kernel drivers. SPDK includes scripts to automate this process on both Linux and FreeBSD.

1) scripts/configure_hugepages.sh
2) scripts/unbind.sh