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Merge pull request torvalds#396 from libos-nuse/merge-linux-4.14
Merge linux 4.14
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What: /sys/bus/nvmem/devices/.../nvmem | ||
Date: July 2015 | ||
KernelVersion: 4.2 | ||
Contact: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> | ||
Description: | ||
This file allows user to read/write the raw NVMEM contents. | ||
Permissions for write to this file depends on the nvmem | ||
provider configuration. | ||
|
||
ex: | ||
hexdump /sys/bus/nvmem/devices/qfprom0/nvmem | ||
|
||
0000000 0000 0000 0000 0000 0000 0000 0000 0000 | ||
* | ||
00000a0 db10 2240 0000 e000 0c00 0c00 0000 0c00 | ||
0000000 0000 0000 0000 0000 0000 0000 0000 0000 | ||
... | ||
* | ||
0001000 |
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What: sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/cap | ||
Date: December 3, 2009 | ||
KernelVersion: 2.6.32 | ||
Contact: dmaengine@vger.kernel.org | ||
Description: Capabilities the DMA supports.Currently there are DMA_PQ, DMA_PQ_VAL, | ||
DMA_XOR,DMA_XOR_VAL,DMA_INTERRUPT. | ||
|
||
What: sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/ring_active | ||
Date: December 3, 2009 | ||
KernelVersion: 2.6.32 | ||
Contact: dmaengine@vger.kernel.org | ||
Description: The number of descriptors active in the ring. | ||
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||
What: sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/ring_size | ||
Date: December 3, 2009 | ||
KernelVersion: 2.6.32 | ||
Contact: dmaengine@vger.kernel.org | ||
Description: Descriptor ring size, total number of descriptors available. | ||
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||
What: sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/version | ||
Date: December 3, 2009 | ||
KernelVersion: 2.6.32 | ||
Contact: dmaengine@vger.kernel.org | ||
Description: Version of ioatdma device. | ||
|
||
What: sys/devices/pciXXXX:XX/0000:XX:XX.X/dma/dma<n>chan<n>/quickdata/intr_coalesce | ||
Date: August 8, 2017 | ||
KernelVersion: 4.14 | ||
Contact: dmaengine@vger.kernel.org | ||
Description: Tune-able interrupt delay value per channel basis. |
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Original file line number | Diff line number | Diff line change |
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What: /sys/kernel/debug/powerpc/memtrace | ||
Date: Aug 2017 | ||
KernelVersion: 4.14 | ||
Contact: linuxppc-dev@lists.ozlabs.org | ||
Description: This folder contains the relevant debugfs files for the | ||
hardware trace macro to use. CONFIG_PPC64_HARDWARE_TRACING | ||
must be set. | ||
|
||
What: /sys/kernel/debug/powerpc/memtrace/enable | ||
Date: Aug 2017 | ||
KernelVersion: 4.14 | ||
Contact: linuxppc-dev@lists.ozlabs.org | ||
Description: Write an integer containing the size in bytes of the memory | ||
you want removed from each NUMA node to this file - it must be | ||
aligned to the memblock size. This amount of RAM will be removed | ||
from the kernel mappings and the following debugfs files will be | ||
created. This can only be successfully done once per boot. Once | ||
memory is successfully removed from each node, the following | ||
files are created. | ||
|
||
What: /sys/kernel/debug/powerpc/memtrace/<node-id> | ||
Date: Aug 2017 | ||
KernelVersion: 4.14 | ||
Contact: linuxppc-dev@lists.ozlabs.org | ||
Description: This directory contains information about the removed memory | ||
from the specific NUMA node. | ||
|
||
What: /sys/kernel/debug/powerpc/memtrace/<node-id>/size | ||
Date: Aug 2017 | ||
KernelVersion: 4.14 | ||
Contact: linuxppc-dev@lists.ozlabs.org | ||
Description: This contains the size of the memory removed from the node. | ||
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||
What: /sys/kernel/debug/powerpc/memtrace/<node-id>/start | ||
Date: Aug 2017 | ||
KernelVersion: 4.14 | ||
Contact: linuxppc-dev@lists.ozlabs.org | ||
Description: This contains the start address of the removed memory. | ||
|
||
What: /sys/kernel/debug/powerpc/memtrace/<node-id>/trace | ||
Date: Aug 2017 | ||
KernelVersion: 4.14 | ||
Contact: linuxppc-dev@lists.ozlabs.org | ||
Description: This is where the hardware trace macro will output the trace | ||
it generates. |
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What: /proc/pid/smaps_rollup | ||
Date: August 2017 | ||
Contact: Daniel Colascione <dancol@google.com> | ||
Description: | ||
This file provides pre-summed memory information for a | ||
process. The format is identical to /proc/pid/smaps, | ||
except instead of an entry for each VMA in a process, | ||
smaps_rollup has a single entry (tagged "[rollup]") | ||
for which each field is the sum of the corresponding | ||
fields from all the maps in /proc/pid/smaps. | ||
For more details, see the procfs man page. | ||
|
||
Typical output looks like this: | ||
|
||
00100000-ff709000 ---p 00000000 00:00 0 [rollup] | ||
Rss: 884 kB | ||
Pss: 385 kB | ||
Shared_Clean: 696 kB | ||
Shared_Dirty: 0 kB | ||
Private_Clean: 120 kB | ||
Private_Dirty: 68 kB | ||
Referenced: 884 kB | ||
Anonymous: 68 kB | ||
LazyFree: 0 kB | ||
AnonHugePages: 0 kB | ||
ShmemPmdMapped: 0 kB | ||
Shared_Hugetlb: 0 kB | ||
Private_Hugetlb: 0 kB | ||
Swap: 0 kB | ||
SwapPss: 0 kB | ||
Locked: 385 kB |
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Original file line number | Diff line number | Diff line change |
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What: /sys/bus/iio/devices/iio:deviceX/in_count0_preset | ||
KernelVersion: 4.13 | ||
Contact: fabrice.gasnier@st.com | ||
Description: | ||
Reading returns the current preset value. Writing sets the | ||
preset value. Encoder counts continuously from 0 to preset | ||
value, depending on direction (up/down). | ||
|
||
What: /sys/bus/iio/devices/iio:deviceX/in_count_quadrature_mode_available | ||
KernelVersion: 4.13 | ||
Contact: fabrice.gasnier@st.com | ||
Description: | ||
Reading returns the list possible quadrature modes. | ||
|
||
What: /sys/bus/iio/devices/iio:deviceX/in_count0_quadrature_mode | ||
KernelVersion: 4.13 | ||
Contact: fabrice.gasnier@st.com | ||
Description: | ||
Configure the device counter quadrature modes: | ||
- non-quadrature: | ||
Encoder IN1 input servers as the count input (up | ||
direction). | ||
- quadrature: | ||
Encoder IN1 and IN2 inputs are mixed to get direction | ||
and count. | ||
|
||
What: /sys/bus/iio/devices/iio:deviceX/in_count_polarity_available | ||
KernelVersion: 4.13 | ||
Contact: fabrice.gasnier@st.com | ||
Description: | ||
Reading returns the list possible active edges. | ||
|
||
What: /sys/bus/iio/devices/iio:deviceX/in_count0_polarity | ||
KernelVersion: 4.13 | ||
Contact: fabrice.gasnier@st.com | ||
Description: | ||
Configure the device encoder/counter active edge: | ||
- rising-edge | ||
- falling-edge | ||
- both-edges | ||
|
||
In non-quadrature mode, device counts up on active edge. | ||
In quadrature mode, encoder counting scenarios are as follows: | ||
---------------------------------------------------------------- | ||
| Active | Level on | IN1 signal | IN2 signal | | ||
| edge | opposite |------------------------------------------ | ||
| | signal | Rising | Falling | Rising | Falling | | ||
---------------------------------------------------------------- | ||
| Rising | High -> | Down | - | Up | - | | ||
| edge | Low -> | Up | - | Down | - | | ||
---------------------------------------------------------------- | ||
| Falling | High -> | - | Up | - | Down | | ||
| edge | Low -> | - | Down | - | Up | | ||
---------------------------------------------------------------- | ||
| Both | High -> | Down | Up | Up | Down | | ||
| edges | Low -> | Up | Down | Down | Up | | ||
---------------------------------------------------------------- |
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Original file line number | Diff line number | Diff line change |
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What: /sys/bus/pci/drivers/altera-cvp/chkcfg | ||
Date: May 2017 | ||
Kernel Version: 4.13 | ||
Contact: Anatolij Gustschin <agust@denx.de> | ||
Description: | ||
Contains either 1 or 0 and controls if configuration | ||
error checking in altera-cvp driver is turned on or | ||
off. |
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