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dmaengine: idxd: Set defaults for GRPCFG traffic class

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Set GRPCFG traffic class to value of 1 for best performance on current
generation of accelerators. Also add override option to allow experimentation.
Sysfs knobs are disabled for DSA/IAX gen1 devices.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/162681373005.1968485.3761065664382799202.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Dave Jiang
2021-07-20 13:42:10 -07:00
committed by Vinod Koul
parent 258cb692b8
commit ade8a86b51
5 changed files with 26 additions and 2 deletions
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5
Documentation/admin-guide/kernel-parameters.txt
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@@ -1747,6 +1747,11 @@
support for the idxd driver. By default it is set to
true (1).
idxd.tc_override= [HW]
Format: <bool>
Allow override of default traffic class configuration
for the device. By default it is set to false (0).
ieee754= [MIPS] Select IEEE Std 754 conformance mode
Format: { strict | legacy | 2008 | relaxed }
Default: strict