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>
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>
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>
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>
