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| author | Dave Jiang <dave.jiang@intel.com> | 2022-09-17 19:12:22 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2022-09-29 20:16:08 +0300 |
| commit | 7ca68fa3c8ab83dfa539f16c5b4b1aec2e33320d (patch) | |
| tree | d2297934d9f37825cbe31c848cad90b86a91a9e8 /drivers/dma/idxd/registers.h | |
| parent | 1f2737521af2b7d018971f1d873856fff02d2b33 (diff) | |
| download | linux-7ca68fa3c8ab83dfa539f16c5b4b1aec2e33320d.tar.xz | |
dmaengine: idxd: add configuration for concurrent batch descriptor processing
Add sysfs knob to allow control of the number of batch descriptors that can
be concurrently processed by an engine in the group as a fraction of the
Maximum Work Descriptors in Progress value specfied in ENGCAP register.
This control knob is part of toggle for QoS control.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Co-developed-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Link: https://lore.kernel.org/r/20220917161222.2835172-6-fenghua.yu@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/idxd/registers.h')
| -rw-r--r-- | drivers/dma/idxd/registers.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/dma/idxd/registers.h b/drivers/dma/idxd/registers.h index 2cc2543edd58..fe3b8d04f9db 100644 --- a/drivers/dma/idxd/registers.h +++ b/drivers/dma/idxd/registers.h @@ -298,7 +298,9 @@ union group_flags { u64 rdbufs_allowed:8; u64 rsvd3:4; u64 desc_progress_limit:2; - u64 rsvd4:30; + u64 rsvd4:2; + u64 batch_progress_limit:2; + u64 rsvd5:26; }; u64 bits; } __packed; |