The "idle" status has 2 meanings for IOAT kernel performace
test module dmaperf: performance test task has finished or
no performance task at all. For the lastest kernel(4.8), the
userland tool will get the "idle" status before the kernel
changed to "running", but for some older kernels(3.17,4.0)
the test tool run correctly. So add a sleep syscall before
to get the status will fix it.
Change-Id: Ia236416607c77b3b8689933fe71ce53a783a04cc
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
The previous performance caculation is wrong,
which is smaller than the per channel performance,
so fix it with the average performance data.
Change-Id: I40580e5f70fb4273fa080bbdfb17ce85436446aa
Signed-off-by: Ziye Yang <ziye.yang@intel.com>
If no channels are available, don't try to run the test.
Change-Id: I4c40635a3da598064da7c94b3c7960a83ba25f8f
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Previously each core can only leverage one ioat channel.
With this patch, we can support the following features:
(1) Users can input the number of ioat channel to be tested.
(2) If the number of CPU cores is c, the total ioat channels
are n, each cpu core can use n/c channels.
Change-Id: I6b2179d3d633cb0999a3f4c5f40d4605c8cebc45
Signed-off-by: Ziye Yang <ziye.yang@intel.com>
The kernel module parameter (ioat_ring_alloc_order) was removed in
kernel commit cd60cd96137f6cb3ea82cace9225626619e7a52d (dmaengine:
IOATDMA: Removing descriptor ring reshape).
This parameter was only used to issue a warning about a too-large queue
depth, so just hard-code the current kernel's limit.
Change-Id: Ib3b32851f538164590b82cb347b02c1c3b9c0106
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Fix the getopt string for the -h switch so that it does not expect an
argument.
Change-Id: I8ea86018d6ee2c61ad698eead9718b2babfe6791
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Dereferencing a non-8-byte-aligned uint64_t pointer is undefined
behavior (caught by UBSan). Use memcmp() instead for an equivalent test
that works at any byte alignment.
Change-Id: I641b11abe9c5fc99d4c57b0b4ba15eb6a8d6d000
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Make it easier to use SPDK libraries by putting them all in a single
directory that can be added with -L rather than scattered around the
source tree.
Change-Id: I5c0f5dd6e7058b5f92fa9bc41548190ffc064761
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
It always returns NULL in the current DPDK env implementation and was
not used outside of a few ioat examples where it is not particularly
informational.
Change-Id: I14b237c33bc25ddebc6b36bfbd6a4edf6762e3ca
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Remove #includes for all DPDK headers that weren't
necessary.
Change-Id: Ib02522e0f04e64a1c98afceb7508cc0e8d931a9d
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
This converts some, but not all, usage of rte_mempool
to spdk_mempool. The remaining rte_mempools use features
we elected not to expose through spdk_mempool such as
constructors, so that will need to be revisited.
Change-Id: I6528809a864ab466b8d19431789bf0f976b648b6
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Use the env library to perform all memory allocations
that previously called DPDK directly.
Change-Id: I6d33e85bde99796e0c85277d6d4880521c34f10d
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
This allows users to swap their PCI library from
libpciaccess/dpdk to another mechanism using the standard
method for swapping out the env library.
Change-Id: Ib2248f8b43754a540de2ec01897e571f0302b667
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
This allows users to swap out SPDK's third party
libraries for an implementation based on their own
framework.
Change-Id: Ia0b7384ce5e31acba5ad0d7002dec9e95b759c52
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
The new env library will wrap all third-party library
calls and be easily swappable with alternate implementations
at build time. For now, it's just the memory library
renamed.
Change-Id: I26a70933289f8137107208ba75f7520fd7a33da0
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
This patch also drops support for automatically unbinding
devices from the kernel - run scripts/setup.sh first.
Our generic pci interface is now hidden behind include/spdk/pci.h
and implemented in lib/util/pci.c. We no longer wrap the calls
in nvme_impl.h or ioat_impl.h. The implementation now only uses
DPDK and the libpciaccess dependency has been removed. If using
a version of DPDK earlier than 16.07, enumerating devices
by class code isn't available and only Intel SSDs will be
discovered. DPDK 16.07 adds enumeration by class code and all
NVMe devices will be correctly discovered.
Change-Id: I0e8bac36b5ca57df604a2b310c47342c67dc9f3c
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
There is only one source file, so use the simpler build syntax that
defines a module filename matching the source filename.
Change-Id: I11fc1b81fb38ffa56d3c61f10cf32a3d7d7f82fc
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Simplify the build rules so that common libraries are always linked.
Also fix up a couple of -lpciaccess instances that should have been
changed to $(PCIACCESS_LIB).
Change-Id: I4c50fa3aa59cae013d3385e38fbb830794299f6e
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Resolve relative paths before using them to clean up command lines.
This should also help shorten the overall command line length that gets
embedded in the binary and used when locating the executable from a
coredump.
Change-Id: Ibff9849ede198bb04313496c8b7131485ffaf14f
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Add a parameter to each I/OAT library function that requires a channel
instead of implicitly using the thread-local channel registration model.
I/OAT channels are already reported by the spdk_ioat_probe() attach
callback, so no infrastructure for channel allocation is necessary.
Change-Id: I8731126fcaea9fe2bafc41a3f75c969a100ef8f0
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Rename all functions with a spdk_ prefix, and provide enough of an API
to avoid apps needing to #include <pciaccess.h>.
The opaque type used in the public API for a PCI device is now
struct spdk_pci_device *.
Change-Id: I1e7a09bbc5328c624bec8cf5c8a69ab0ea8e8254
Signed-off-by: Ziye Yang <ziye.yang@intel.com>
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Similar to the NVMe API change, this allows better abstraction of the
PCI subsystem.
Change-Id: I2b84d9c3c498a08d4451b4ff27d0865f0456c210
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
With CONFIG_PCIACCESS=y in CONFIG file, we can
use libpciaccess library; With CONFIG_PCIACCESS=n
in CONFIG file, we use pciaccess functions provided
in DPDK.
Change-Id: I786c5589b8e7909ba2e59d222938dd5ba45bf92d
Signed-off-by: Ziye Yang <ziye.yang@intel.com>
Previously, ioat_init() in the example programs was returning 0 even if
initialization failed.
Change-Id: I96b2ec5646f7051ab881611acff424fb8547d5eb
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
For those Crystal Beach DMA channels which support block fill capability,
we add a fill API here that can zero out pages or fill them with a
fixed pattern.
Change-Id: I8a57337702b951c703d494004b111f6d206279fb
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Also add a space between Copyright and (c).
The copyright year can be determined using git metadata.
Also remove the duplicated "All rights reserved." - every instance of
this line already has a corresponding "All rights reserved" immediately
below it, except for examples/ioat/kperf/kmod/dma_perf.c, where I have
added it manually.
Performed using this command:
git ls-files | xargs sed -i -e 's/Copyright(c) \(.*\) Intel Corporation. All rights reserved./Copyright (c) Intel Corporation./'
Change-Id: I3779f404966800709024eb1eb66a50068af2716c
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
We will check the DMA channel count which associated with kernel
ioatdma driver, and print the error message when no DMA channel
found.
Change-Id: I1d24108acb8fc6ee0c8f6041072e2dd528f55b24
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
For the purpose to make performance comparison between the ioat
kernel driver and user space driver, we added the kernel driver
test harness here, all the workload executed in the kernel space
and controlled via sysfs.
Change-Id: I2c8d826283405a5e1c9ba6a033503bcb98541370
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
This more accurately represents what function it performs.
Also remove pci_device_has_uio_driver() from the public API. Callers
should use pci_device_has_non_uio_driver() instead.
Change-Id: I9623fe1345b43e981d5823804e33d01ac0d3bb1c
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Previously, the cleanup functions were only being called if there was an
error during initialization.
Change-Id: I1606cfa9a9c3732d670131f78249d34a5db47403
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
The ioat driver supports DMA engine copy offload hardware available on
Intel Xeon platforms.
Change-Id: Ida0b17b25816576948ddb1b0443587e0f09574d4
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
