From: Matthew Wilcox
Use the XArray APIs to add and replace pages in the page cache. This
removes two uses of the radix tree preload API and is significantly
shorter code.
Signed-off-by: Matthew Wilcox
---
include/linux/swap.h | 8 ++-
mm/filemap.c | 143 ++--
From: Matthew Wilcox
btrfs has its own custom function for determining whether the page cache
has any pages in a particular range. Move this functionality to the
page cache, and call it from btrfs.
Signed-off-by: Matthew Wilcox
---
fs/btrfs/btrfs_inode.h | 7 -
fs/btrfs/inode.c|
From: Matthew Wilcox
This function simply creates a slot in the XArray for users which need
to acquire multiple locks before storing their entry in the tree and
so cannot use a plain xa_store().
Signed-off-by: Matthew Wilcox
---
include/linux/xarray.h | 14 ++
lib/xarra
From: Matthew Wilcox
Use the xarray infrstructure like we used the radix tree infrastructure.
This lets us get rid of idr_get_free() from the radix tree code.
Signed-off-by: Matthew Wilcox
---
include/linux/idr.h| 8 +-
include/linux/radix-tree.h | 4 -
lib/idr.c |
From: Matthew Wilcox
This version of the XArray has no known bugs. I have converted the
radix tree test suite entirely over to the XArray and fixed all bugs
that it has uncovered. There are additional tests in the test suite for
the XArray, so I now claim the XArray has better test coverage tha
From: Matthew Wilcox
The IDR distinguishes between unallocated entries (read as NULL) and
entries where the user has chosen to store NULL. The radix tree was
modified to consider NULL entries which had tag 0 _clear_ as being
allocated, but it added a lot of complexity.
Instead, the XArray has a
From: Matthew Wilcox
While the radix tree offers no ability to store IS_ERR pointers,
documenting that the XArray does not led to some concern. Here is a
sanctioned way to store errnos in the XArray. I'm concerned that it
will confuse people who can't tell the difference between xa_is_err()
and
From: Matthew Wilcox
Add myself as XArray and IDR maintainer.
Signed-off-by: Matthew Wilcox
---
MAINTAINERS | 12
1 file changed, 12 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 18994806e441..55ae4c0b38d5 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -14893,6 +14893
From: Matthew Wilcox
This hopefully temporary function is useful for users who have not yet
been converted to multi-index entries.
Signed-off-by: Matthew Wilcox
---
include/linux/xarray.h | 2 ++
lib/xarray.c | 22 ++
2 files changed, 24 insertions(+)
diff --git
From: Matthew Wilcox
This function frees all the internal memory allocated to the xarray
and reinitialises it to be empty.
Signed-off-by: Matthew Wilcox
---
include/linux/xarray.h | 1 +
lib/xarray.c | 26 ++
2 files changed, 27 insertions(+)
diff --git a/in
From: Matthew Wilcox
These two functions move the xas index by one position, and adjust the
rest of the iterator state to match it. This is more efficient than
calling xas_set() as it keeps the iterator at the leaves of the tree
instead of walking the iterator from the root each time.
Signed-of
From: Matthew Wilcox
This function combines the functionality of radix_tree_gang_lookup() and
radix_tree_gang_lookup_tagged(). It extracts entries matching the
specified filter into a normal array.
Signed-off-by: Matthew Wilcox
---
include/linux/xarray.h | 2 ++
lib/xarray.c | 80 +
From: Matthew Wilcox
Like cmpxchg(), xa_cmpxchg will only store to the index if the current
entry matches the old entry. It returns the current entry, which is
usually more useful than the errno returned by radix_tree_insert().
For the users who really only want the errno, the xa_insert() wrappe
From: Matthew Wilcox
This iterator allows the user to efficiently walk a range of the array,
executing the loop body once for each entry in that range that matches
the filter. This commit also includes xa_find() and xa_find_above()
which are helper functions for xa_for_each() but may also be use
From: Matthew Wilcox
This first function in the XArray API brings with it a lot of support
infrastructure. The advanced API is based around the xa_state which is
a more capable version of the radix_tree_iter.
As the test-suite demonstrates, it is possible to use the xarray and
radix tree APIs o
From: Matthew Wilcox
XArray tags are slightly more strongly typed than the radix tree tags,
but occupy the same bits. This commit also adds the xas_ family of tag
operations, for cases where the caller is already holding the lock, and
xa_tagged() to ask whether any array member has a particular
From: Matthew Wilcox
xa_store() differs from radix_tree_insert() in that it will overwrite an
existing element in the array rather than returning an error. This is
the behaviour which most users want, and those that want more complex
behaviour generally want to use the xas family of routines any
From: Matthew Wilcox
This is documentation on how to use the XArray, not details about its
internal implementation.
Signed-off-by: Matthew Wilcox
---
Documentation/core-api/index.rst | 1 +
Documentation/core-api/xarray.rst | 361 ++
2 files changed, 362
From: Matthew Wilcox
This is a direct replacement for struct radix_tree_node. A couple of
struct members have changed name, so convert those. Use a #define so
that radix tree users continue to work without change.
Signed-off-by: Matthew Wilcox
---
include/linux/radix-tree.h| 29 +
From: Matthew Wilcox
This is a direct replacement for struct radix_tree_root. Some of the
struct members have changed name; convert those, and use a #define so
that radix_tree users continue to work without change.
Signed-off-by: Matthew Wilcox
---
include/linux/radix-tree.h | 3
From: Matthew Wilcox
Remove the address_space ->tree_lock and use the xa_lock newly added to
the radix_tree_root. Rename the address_space ->page_tree to ->pages,
since we don't really care that it's a tree. Take the opportunity to
rearrange the elements of address_space to pack them better on
From: Matthew Wilcox
Instead of storing a pointer to the slot containing the canonical entry,
store the offset of the slot. Produces slightly more efficient code
(~300 bytes) and simplifies the implementation.
Signed-off-by: Matthew Wilcox
---
include/linux/xarray.h | 90 +
From: Matthew Wilcox
Introduce xarray value entries to replace the radix tree exceptional
entry code. This is a slight change in encoding to allow the use of an
extra bit (we can now store BITS_PER_LONG - 1 bits in a value entry).
It is also a change in emphasis; exceptional entries are intimida
Hi Matthew!
On 01/17/2018 09:20 PM, Matthew Wilcox wrote:
> Use the xarray infrstructure like we used the radix tree infrastructure.
> This lets us get rid of idr_get_free() from the radix tree code.
There's a typo: infrstructure => infratructure
Cheers,
Adrian
--
.''`. John Paul Adrian Glau
In this function, we init the USB2 and USB3 PHYs, but if soft reset
times out, we don't unwind this.
Noticed by inspection.
Signed-off-by: Brian Norris
---
drivers/usb/dwc3/core.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 0783
On Fri, Jan 12, 2018 at 12:00:16PM +0800, William Wu wrote:
> The dwc3_core_init() gets the PHYs and initializes the PHYs with
> the usb_phy_init() and phy_init() functions before initializing
> core, and power on the PHYs after core initialization is done.
>
> However, some platforms (e.g. Rockch
commit 918b8ac55b6c809b70aa05c279087109584e393e upstream
vhci_hcd calls sysfs_create_group() with dynamically allocated sysfs
attributes triggering the lock-class key not persistent warning. Call
sysfs_attr_init() for dynamically allocated sysfs attributes to fix it.
vhci_hcd vhci_hcd: USB/IP Vir
On 1/17/2018 9:47 PM, Cristian wrote:
Hello,
Open bug in launchpad.net
https://bugs.launchpad.net/bugs/1743872
dmesg_4.15.0-041500rc8-generic
dmesg:
[ 104.468231] usb 3-2: new high-speed USB device number 4 using xhci_hcd
[ 104.616570] usb 3-2: New USB device found, idVendor=0bda, idProduct=a8
Unable to handle kernel NULL pointer dereference at virtual
> address 0188
> [2.244195] pgd = (ptrval)
> [2.246994] [0188] *pgd=
> [2.250676] Internal error: Oops: 5 [#1] ARM
> [2.254979] Modules linked in:
> [ 2.258089] CPU: 0 PID: 1 C
In you commit message, there is a typo "when when"
2018-01-17 22:41 GMT+09:00 Roger Quadros :
> On 17/01/18 12:08, Ladislav Michl wrote:
>> Don't complain on -EPROBE_DEFER when when no PHY found, the driver
thanks,
jaej
This patch series adds new updates and some fixes for DWC_usb31.
Changes in v3:
- Add "usb: dwc3: Check controller type before setting speed" to series
Changes in v2:
- Add another patch to the series to increase mass_storage max_speed
- Separate "usb: dwc3: ep0: Reset TRB counter for ep0 IN"
>From DWC_usb31 databook section 1.3.2, once DWC3_DCTL_CSFTRST bit is
cleared, we must wait at least 50ms before accessing the PHY domain
(synchronization delay).
Signed-off-by: Thinh Nguyen
---
drivers/usb/dwc3/core.c | 13 -
1 file changed, 12 insertions(+), 1 deletion(-)
diff --g
The maximum bytes per interval for USB SuperSpeed Plus can be set by
isoc endpoint companion descriptor when it is above 48K. If the
descriptor is provided, then use its value.
USB 3.1 spec 9.6.8
Signed-off-by: Thinh Nguyen
---
drivers/usb/core/urb.c | 8
1 file changed, 8 insertions(+
Update two GTXFIFOSIZ bit fields for the DWC_usb31 controller. TXFDEP
is a 15-bit value instead of 16-bit value, and bit 15 is TXFRAMNUM.
The GTXFIFOSIZ register for DWC_usb31 is as follows:
+---+---+--+
| BITS | Name | Description
DWC_usb31 controller has different GTXFIFOSIZE bit field for TXFDEF.
Check for DWC_usb31 IP revision to read the appropriate bit fields.
Signed-off-by: Thinh Nguyen
---
drivers/usb/dwc3/gadget.c | 5 -
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/dwc3/gadget.c b/d
Add new GRXTHRCFG bit field macros for DWC_usb31. The GRXTHRCFG register
fields for DWC_usb31 is as follows:
+---+--+--+
| BITS | Name | Description |
+===+==+===
DWC_usb31 controller has a different UsbRxPktCnt bit fields from
GRXTHRCFG register. Check for DWC_usb31 IP revision to read the
appropriate value.
Signed-off-by: Thinh Nguyen
---
drivers/usb/dwc3/gadget.c | 6 +-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/dwc3/
Add new GTXTHRCFG bit field macros for DWC_usb31. The GTXTHRCFG register
fields for DWC_usb31 is as follows:
+---+--+---+
| BITS | Name | Description |
+===+==+=
Check and configure TX/RX threshold for DWC_usb31. Update dwc3 structure
with new fields to store these threshold configurations.
Signed-off-by: Thinh Nguyen
---
drivers/usb/dwc3/core.c | 55 +
drivers/usb/dwc3/core.h | 8 +++
2 files changed,
Add a new field to dwc3 structure to track VERSIONTYPE. The VERSIONTYPE
is represented in ASCII in the 32-bit VERSIONTYPE register. In
DWC_usb31, sub releases for each version are tracked with VERSIONTYPE
such as "ea01" and "ea02".
Signed-off-by: Thinh Nguyen
---
drivers/usb/dwc3/core.c | 2 ++
Dump LSP and BMU debug info.
Signed-off-by: Thinh Nguyen
---
drivers/usb/dwc3/core.h| 5 +
drivers/usb/dwc3/debugfs.c | 5 +
2 files changed, 10 insertions(+)
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index e53ae6038bbe..fd794972802d 100644
--- a/drivers/usb/dwc
DWC_usb31 periodic transfer at 48K+ bytes per interval may need
modification to the TX/RX packet threshold to achieve optimal result.
Add properties to make it configurable.
Cc: John Youn
Signed-off-by: Thinh Nguyen
---
Documentation/devicetree/bindings/usb/dwc3.txt | 4
1 file changed, 4
In DWC_usb31 version 1.70a-ea06 and prior needs a SW workaround for isoc
START TRANSFER command failure. However, some affected versions may have
RTL patches to fix this without a SW workaround. Add this quirk to
disable the SW workaround when it is not needed.
Synopsys STAR 9001202023: Wrong micr
DWC_usb3 speed can only be set up to SuperSpeed. Limit the setting to
SuperSpeed only should the value be higher. Otherwise, the controller
will read an invalid speed value and set the device to an incorrect
speed.
Signed-off-by: Thinh Nguyen
---
drivers/usb/dwc3/gadget.c | 5 -
1 file chang
In DWC_usb31 version 1.70a-ea06 and prior, for highspeed and fullspeed
isochronous IN, BIT[15:14] of the 16-bit microframe number reported by
the XferNotReady event are invalid. The driver uses this number to
schedule the isochronous transfer and passes it to the START TRANSFER
command. Because thi
Increase max_speed of the mass_storage driver for UDCs that support
SuperSpeed Plus. The composite driver will pass this value to UDC core
to set the device speed on probe (actual speed may be different
depending on whether the USB controller supports it or other external
factors).
Signed-off-by:
s 0188
[2.244195] pgd = (ptrval)
[2.246994] [0188] *pgd=
[2.250676] Internal error: Oops: 5 [#1] ARM
[2.254979] Modules linked in:
[2.258089] CPU: 0 PID: 1 Comm: swapper Not tainted
4.15.0-rc8-next-20180117-2-g75d5f21 #7
[2.266724] Hardware name: Fre
irtual
> address
> 0188
> [2.244195] pgd = (ptrval)
> [2.246994] [0188] *pgd=
> [2.250676] Internal error: Oops: 5 [#1] ARM
> [2.254979] Modules linked in:
> [2.258089] CPU: 0 PID: 1 Comm: swapper Not tainted
> 4.15.0-rc8-next-20180117
On Tue, Jan 16, 2018 at 09:51:17AM +, OKAMOTO Yoshiaki wrote:
> FS040U modem is manufactured by omega, and sold by Fujisoft. This patch
> adds ID of the modem to use option1 driver. Interface 3 is used as
> qmi_wwan, so the interface is ignored.
>
> Signed-off-by: Yoshiaki Okamoto
> Signed-of
[...]
> > r8153 on Dell TB15/16 dock corrupts rx packets.
> >
> > This change is suggested by Realtek. They guess that the XHCI
> > controller doesn't have enough buffer, and their guesswork is correct,
> > once the RX aggregation gets disabled, the issue is gone.
> >
> > ASMedia is currently worki
On Tue, Jan 16, 2018 at 12:12:33AM +0100, Max Schulze wrote:
>
> > This indicates that option isn't the right driver for this for device.
> >
> > I think we should add a new simple driver for it instead, which reports
> > that modem control isn't (yet) supported (yes, your python script would
> >
> On 18 Jan 2018, at 11:04 AM, Hayes Wang wrote:
>
> [...]
>>> r8153 on Dell TB15/16 dock corrupts rx packets.
>>>
>>> This change is suggested by Realtek. They guess that the XHCI
>>> controller doesn't have enough buffer, and their guesswork is correct,
>>> once the RX aggregation gets disabl
Add new Motorola Tetra (simple) driver for Motorola Solutions TETRA PEI
devices.
D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=0cad ProdID=9011 Rev=24.16
S: Manufacturer=Motorola Solutions Inc.
S: Product=Motorola Solutions TETRA PEI interface
C: #Ifs= 2 Cfg#= 1 Atr=80
e
> [2.235659] Unable to handle kernel NULL pointer dereference at virtual
> address 0188
> [2.244195] pgd = (ptrval)
> [2.246994] [0188] *pgd=
> [2.250676] Internal error: Oops: 5 [#1] ARM
> [2.254979] Modules linked in:
> [2.25808
On Tue, Jan 16, 2018 at 9:50 PM, Mathias Nyman
wrote:
>
> Hi, Sorry about the delay
>
>
> On 04.01.2018 07:17, Thang Q. Nguyen wrote:
>>
>> Hi,
>>
>> On Sat, Dec 16, 2017 at 10:45 AM, Thang Q. Nguyen wrote:
>>>
>>> From: Tung Nguyen
>>>
>>> Currently, hcd->shared_hcd always creates and registers
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