Hi Jonathan,
On 08/01/2017 12:17, Jonathan Cameron wrote:
> On 30/12/16 14:40, Jonathan Cameron wrote:
>> On 13/12/16 14:33, Quentin Schulz wrote:
>>> The Allwinner SoCs all have an ADC that can also act as a touchscreen
>>> controller and a thermal sensor. This patch adds the ADC driver which is
Dear Greg,
On 2017-01-13 14:00, Greg Kroah-Hartman wrote:
On Wed, Jan 11, 2017 at 03:26:06PM +0100, Paul Menzel wrote:
On 01/11/17 15:12, Winkler, Tomas wrote:
> > > On 01/11/17 10:24, Winkler, Tomas wrote:
> > > > >
> > > > > On Wed, Jan 11, 2017 at 01:27:21AM +0200, Tomas Winkler wrote:
>
On 14 January 2017 19:19:58 GMT+00:00, Quentin Schulz
wrote:
>Hi Jonathan,
>
>On 08/01/2017 12:17, Jonathan Cameron wrote:
>> On 30/12/16 14:40, Jonathan Cameron wrote:
>>> On 13/12/16 14:33, Quentin Schulz wrote:
The Allwinner SoCs all have an ADC that can also act as a
>touchscreen
On Sat, Jan 14, 2017 at 07:38:01PM +0100, Greg KH wrote:
> On Sat, Jan 14, 2017 at 11:53:36PM +0530, Kartikey Singh wrote:
> > do while loop removed from single statement macro
> >
> > Signed-off-by: Kartikey Singh
> > ---
> > drivers/staging/rtl8188eu/include/wifi.h | 4 +---
> > 1 file changed
On Sat, Jan 14, 2017 at 08:27:31PM +0100, Paul Menzel wrote:
> Dear Greg,
>
>
> On 2017-01-13 14:00, Greg Kroah-Hartman wrote:
> > On Wed, Jan 11, 2017 at 03:26:06PM +0100, Paul Menzel wrote:
>
> > > On 01/11/17 15:12, Winkler, Tomas wrote:
> > >
> > > > > > On 01/11/17 10:24, Winkler, Tomas wr
On Sun, Jan 15, 2017 at 12:44:41AM +0530, Kartikey singh wrote:
> I think that macro is required. Anyway I won't have trouble cleaning it up if
> you say so.
I don't see it being used anywhere, do you? Use 'git grep' to search
for it. Even better yet, remove it and rebuild the driver and see if
On 01/14/2017 10:40 PM, Greg KH wrote:
On Sun, Jan 15, 2017 at 12:44:41AM +0530, Kartikey singh wrote:
Even better yet, remove it and rebuild the driver and see if it
breaks :)
Only if the code is not between #ifn?def / #endif...
On Sun, Dec 04, 2016 at 11:16:04AM +, Jonathan Cameron wrote:
> On 04/12/16 02:19, Brian Masney wrote:
> > isl29028_enable_proximity() has a boolean argument named enable. This
> > function is only called once and the enable flag is set to true in that
> > call. This patch removes the enable pa
Commit bc3e53f682d9
("mm: distinguish between mlocked and pinned pages")
added VmPin in /proc//status.
Report that in Documentation/filesystems/proc.txt
Also move Umask after Name to keep correct order.
Signed-off-by: Fabian Frederick
---
Documentation/filesystems/proc.txt | 5 +++--
1 file ch
The ax.25 socket connection timed out & the sock struct has been
previously taken down ie. sock struct is now a NULL pointer. Checking
the sock_flag causes the segfault. Check if the socket struct pointer
is NULL before checking sock_flag. This segfault is seen in
timed out netrom connections.
Pl
On Sat, Jan 14, 2017 at 12:50:32AM -0800, Paul E. McKenney wrote:
> Hello!
>
> This series provides documentation updates:
>
> 1.Add Design documentation for expedited grace periods.
>
> 2.Fix RCU requirements typos, courtesy of Tetsuo Handa.
>
> 3.doc: Update control-dependencies s
Acked-by: Christoph Lameter
On Sat, Jan 14, 2017 at 01:25:33AM -0800, Paul E. McKenney wrote:
> Hello!
>
> This series provides torture-test updates:
>
> 1.Add a check for CONFIG_RCU_STALL_COMMON for TINY01, in order
> to complain if this case is not tested.
>
> 2.Add CONFIG_PROVE_RCU_REPEATEDLY=y for TINY02,
From: Johannes Weiner [mailto:han...@cmpxchg.org]
> On Thu, Jan 12, 2017 at 05:28:23PM -0800, Matthew Wilcox wrote:
> > The newly introduced warning in radix_tree_free_nodes() was testing the
> > wrong variable; it should have been 'old' instead of 'node'. Rather
> > than replace that one instance
Hi Matt,
[auto build test ERROR on linus/master]
[also build test ERROR on v4.10-rc3 next-20170113]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system]
url:
https://github.com/0day-ci/linux/commits/Matt-Ranostay/mmc-pwrseq-add-support-for-Marvel
Hi all,
This is not exactly new, and was sent before, although back then, I did not
have an user of the pre-declared MDIO board information, but now we do. Note
that I have additional changes queued up to have b53 register platform data for
MIPS bcm47xx and bcm63xx.
Yes I know that we should have
Utilize the ability to pass board specific MDIO bus information towards a
particular MDIO device thus allowing us to provide the per-port switch layout
to the Marvell 88E6XXX switch driver.
Since we would end-up with conflicting registration paths, do not register the
"dsa" platform device anymore
Now that the base device driver code provides an identical
implementation of dev_find_class() utilize device_find_class() instead
of our own version of it.
Signed-off-by: Florian Fainelli
---
net/dsa/dsa.c | 22 ++
1 file changed, 2 insertions(+), 20 deletions(-)
diff --git
Add a helper function to lookup a device reference given a class name.
This is a preliminary patch to remove adhoc code from net/dsa/dsa.c and
make it more generic.
Signed-off-by: Florian Fainelli
---
drivers/base/core.c| 19 +++
include/linux/device.h | 1 +
2 files changed
Make it clear that these functions take a device_node structure pointer
Signed-off-by: Florian Fainelli
---
net/dsa/dsa2.c | 16
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index 6e3675220fef..04ab62251fe3 100644
--- a/net/dsa/ds
Allow drivers to use the new DSA API with platform data. Most of the
code in net/dsa/dsa2.c does not rely so much on device_nodes and can get
the same information from platform_data instead.
We purposely do not support distributed configurations with platform
data, so drivers should be providing a
Allow board support code to collect pre-declarations for MDIO devices by
registering them with mdiobus_register_board_info(). SPI and I2C buses
have a similar feature, we were missing this for MDIO devices, but this
is particularly useful for e.g: MDIO-connected switches which need to
provide their
dev_to_net_device() is moved from net/dsa/dsa.c to net/core/dev.c since
it going to be used by net/dsa/dsa2.c and the namespace of the function
justifies making it available to other users potentially.
Signed-off-by: Florian Fainelli
---
include/linux/netdevice.h | 2 ++
net/core/dev.c
Move the assignment of ports in _dsa_register_switch() closer to where
it is checked, no functional change. Re-order declarations to be
preserve the inverted christmas tree style.
Signed-off-by: Florian Fainelli
---
net/dsa/dsa2.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --g
In preparation for allowing platform data, and therefore no valid
device_node pointer, make most DSA functions takes a pointer to a
dsa_port structure whenever possible. While at it, introduce a
dsa_port_is_valid() helper function which checks whether port->dn is
NULL or not at the moment.
Signed-
In preparation for allowing dsa_register_switch() to be supplied with
device/platform data, pass down a struct device pointer instead of a
struct device_node.
Signed-off-by: Florian Fainelli
---
drivers/net/dsa/b53/b53_common.c | 2 +-
drivers/net/dsa/mv88e6xxx/chip.c | 11 ++-
drivers/
Some m32r builds were having a warning:
arch/m32r/include/asm/cmpxchg.h:191:3:
warning: value computed is not used
arch/m32r/include/asm/cmpxchg.h:68:3:
warning: value computed is not used
Taking the idea from e001bbae7147 ("ARM: cmpxchg: avoid warnings from
macro-ized cmpxchg()
The ethtool api {get|set}_settings is deprecated.
We move this driver to new api {get|set}_link_ksettings.
Signed-off-by: Philippe Reynes
---
drivers/net/ethernet/marvell/sky2.c | 68 --
1 files changed, 40 insertions(+), 28 deletions(-)
diff --git a/drivers/ne
(sorry sending again w/o html)
On 01/13/2017 07:20 AM, Philipp Zabel wrote:
Am Freitag, den 06.01.2017, 18:11 -0800 schrieb Steve Longerbeam:
+For image capture, the IPU contains the following internal subunits:
+
+- Image DMA Controller (IDMAC)
+- Camera Serial Interface (CSI)
+- Image Conver
From: Sudip Mukherjee
Exar XR17V352/354/358 chips have 16 multi-purpose inputs/outputs which
can be controlled using gpio interface.
Add the gpio specific code.
Signed-off-by: Sudip Mukherjee
---
Andy,
name[16] should be enough. Maximum of 12 char will be used.
drivers/gpio/Kconfig |
From: Sudip Mukherjee
Remove the Exar specific codes from 8250_pci and blacklist those chips
so that the new Exar serial driver binds to the devices.
Signed-off-by: Sudip Mukherjee
---
drivers/tty/serial/8250/8250_pci.c | 336 +
drivers/tty/serial/8250/Kconf
From: Sudip Mukherjee
Add the serial driver for the Exar chips. And also register the
platform device for the GPIO provided by the Exar chips.
Signed-off-by: Sudip Mukherjee
---
Andy,
I hope the grouping and ordering of the header files are ok this time.
One comment has been changed to Kerneld
Hi!
> > In v4.10 (and probably v4.9, too) I can no longer use the in-call
> > speaker. I can no longer use the wired headset, either.
> >
> > v4.4 (and probably v4.6) works ok.
> >
> > Any ideas? Does wired headset / in-call speaker work for you?
> >
> > "Mono" and "Mono DAC" options are still
Hi All,
This is another set of patches which I have been pulling out of the
openrisc backlogs. Its a bit of a process since I need to cleanup commit
messages, review and test the patches.
The interesting things here are:
- optimized memset and memcpy routines, ~20% boot time saving
- support fo
From: Stefan Kristiansson
Motivation for this is to be able to print the way information
properly in print_cpuinfo(), instead of hardcoding it to one.
Signed-off-by: Stefan Kristiansson
Signed-off-by: Jonas Bonn
[sho...@gmail.com fixed conflict with show_cpuinfo change]
Signed-off-by: Stafford
From: Jonas Bonn
The sparse IRQ framework is preferred nowadays so switch over to it.
Signed-off-by: Jonas Bonn
Signed-off-by: Stafford Horne
---
arch/openrisc/Kconfig| 1 +
arch/openrisc/include/asm/Kbuild | 1 +
2 files changed, 2 insertions(+)
diff --git a/arch/openrisc/Kconfi
From: Stefan Kristiansson
The stack size was hard coded to 0x2000, use the standard THREAD_SIZE
definition loaded from thread_info.h.
Signed-off-by: Stefan Kristiansson
[sho...@gmail.com: Added body to the commit message]
Signed-off-by: Stafford Horne
---
arch/openrisc/kernel/head.S | 4 +++-
From: Stefan Kristiansson
This adds an emulation layer for implementations
that lack the l.lwa and l.swa instructions.
It handles these instructions both in kernel space and
user space.
Signed-off-by: Stefan Kristiansson
[sho...@gmail.com: Added delay slot pc adjust logic]
Signed-off-by: Staffo
From: Stefan Kristiansson
Optimized version that make use of the l.lwa and l.swa atomic instruction
pair.
Most openrisc cores provide these instructions now, if not available
emulation is provided.
Signed-off-by: Stefan Kristiansson
[sho...@gmail.com: remove OPENRISC_HAVE_INST_LWA_SWA config su
From: Stefan Kristiansson
This utilize the load-link/store-conditional l.lwa and l.swa
instructions to implement the atomic bitops.
When those instructions are not available emulation is provided.
Signed-off-by: Stefan Kristiansson
[sho...@gmail.com: remove OPENRISC_HAVE_INST_LWA_SWA config sug
From: Stefan Kristiansson
This brings it inline with the other setup oprations done like the cache
enables _ic_enable and _dc_enable. Also, this is going to make it
easier to initialize additional cpu's when smp is introduced.
Signed-off-by: Stefan Kristiansson
[sho...@gmail.com: Added commit
Cleanups to whitespace and add some comments. Reading through the delay
slot logic I noticed some things:
- Delay slot instructions were not indented
- Some comments are not lined up
- Use tabs and spaces consistent with other code
No functional change
Signed-off-by: Stafford Horne
---
arch/
From: Stefan Kristiansson
Using the l.lwa and l.swa atomic instruction pair.
Most openrisc processor cores provide these instructions now. If the
instructions are not available emulation is provided.
Signed-off-by: Stefan Kristiansson
[sho...@gmail.com: remove OPENRISC_HAVE_INST_LWA_SWA config
Use execption SR stored in pt_regs for detection, the current SR is not
correct as the handler is running after return from exception.
Also, The code that checks for a delay slot uses a flag bitmask and then
wants to check if the result is not zero. The test it implemented was
wrong.
Correct it
The openrisc official repository and patch work happens currently on
github. Add the repo for reference.
Signed-off-by: Stafford Horne
---
MAINTAINERS | 1 +
1 file changed, 1 insertion(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 5f0420a..d55d0d7 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@
This helps to suppress the vmlinux.lds file.
Signed-off-by: Stafford Horne
---
arch/openrisc/kernel/.gitignore | 1 +
1 file changed, 1 insertion(+)
create mode 100644 arch/openrisc/kernel/.gitignore
diff --git a/arch/openrisc/kernel/.gitignore b/arch/openrisc/kernel/.gitignore
new file mode 1
The strings used during the head/init phase of openrisc bootup were
stored in the executable section of the binary.
This causes compilation to fail when using CONFIG_DEBUG_INFO with
error:
Error: unaligned opcodes detected in executable segment
Also, this patch removes unused strings.
Signed-of
From: Sebastian Macke
The bits were swapped, as per spec and processor implementation the
power management present bit is 9 and PIC bit is 8. This patch brings
the definitions into spec.
Signed-off-by: Sebastian Macke
[sho...@gmail.com: Added commit body]
Signed-off-by: Stafford Horne
---
arc
The generic memcpy routine provided in kernel does only byte copies.
Using word copies we can lower boot time and cycles spend in memcpy
quite significantly.
Booting on my de0 nano I see boot times go from 7.2 to 5.6 seconds.
The avg cycles in memcpy during boot go from 6467 to 1887.
I tested sev
From: Sebastian Macke
This patch adds basic support for the idle state of the cpu.
The patch overrides the regular idle function, enables the interupts,
checks for the power management unit and enables the cpu doze mode
if available.
Signed-off-by: Sebastian Macke
[sho...@gmail.com: Fixed check
Openrisc stack pointer is managed by decrementing r1. Add regexes to
recognize this.
Signed-off-by: Stafford Horne
---
scripts/checkstack.pl | 3 +++
1 file changed, 3 insertions(+)
diff --git a/scripts/checkstack.pl b/scripts/checkstack.pl
index dd83978..eea5b78 100755
--- a/scripts/checkstack
From: Olof Kindgren
This adds a hand-optimized assembler version of memset and sets
__HAVE_ARCH_MEMSET to use this version instead of the generic C
routine
Signed-off-by: Olof Kindgren
Signed-off-by: Stafford Horne
---
arch/openrisc/include/asm/string.h | 7 +++
arch/openrisc/kernel/or32_ksy
From: Stefan Kristiansson
This causes the build to fail when building with the or1k-musl-linux-
toolchain and it is not needed.
Signed-off-by: Stafford Horne
---
arch/openrisc/kernel/ptrace.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/openrisc/kernel/ptrace.c b/arch/openrisc/kerne
From: Stefan Kristiansson
Support for the futex_atomic_* operations by using the
load-link/store-conditional l.lwa/l.swa instructions.
Most openrisc cores provide these instructions now if not available,
emulation is provided.
Signed-off-by: Stefan Kristiansson
[sho...@gmail.com: remove OPENRIS
From: Stefan Kristiansson
Heavily based on the ARM implementation, this adds
ticket spinlock support for OpenRISC.
Signed-off-by: Stefan Kristiansson
[sho...@gmail.com: fix tabs vs space checkpatch warning]
Signed-off-by: Stafford Horne
---
arch/openrisc/include/asm/spinlock.h | 232 +++
From: Stefan Kristiansson
By slightly reorganizing the code, the number of registers
used in the tlb miss handlers can be reduced by two,
thus removing the need to save them to memory.
Also, some dead and commented out code is removed.
No functional change.
Signed-off-by: Stefan Kristiansson
This change fixes a checkpatch error for "that open brace { should be
on the previous line" as well as a related spacing warning.
Signed-off-by: David Wittman
---
drivers/staging/ks7010/ks_wlan_net.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/ks7010/
Change log from v1:
- Fix missing path pointed by Yunlei
>From 5d86527e4c70aeb8482dac24059624da720a0807 Mon Sep 17 00:00:00 2001
From: Jaegeuk Kim
Date: Wed, 11 Jan 2017 10:20:04 -0800
Subject: [PATCH] f2fs: show # of on-going flush and discard bios
This patch adds stat information for flush an
Hi Michal,
[auto build test ERROR on net-next/master]
[also build test ERROR on v4.10-rc3 next-20170113]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system]
url:
https://github.com/0day-ci/linux/commits/Michal-Hocko/net_sched-use-kvmalloc-rather
Hi Vincent,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: f0ad17712b9f71c24e2b8b9725230ef57232377f
commit: 3194c6870158e305dac2af52f83681e9cb67280f NFC: nfcmrvl: add firmware
download support
date: 1 year, 3 mon
On Sat, 14 Jan 2017, Michael Schmitz wrote:
> Am 13.01.2017 um 15:33 schrieb Finn Thain:
>
> >> The case I'm worried about is both IDE and SCSI raising an interrupt.
> >> We don't currently mask the IDE/ST-DMA interrupt so a stacked
> >> interrupt must be processed in the same pass as the init
On Saturday 14 January 2017 23:56:15 Pavel Machek wrote:
> Hi!
>
> > > In v4.10 (and probably v4.9, too) I can no longer use the in-call
> > > speaker. I can no longer use the wired headset, either.
> > >
> > > v4.4 (and probably v4.6) works ok.
> > >
> > > Any ideas? Does wired headset / in-cal
-EV3-dts/20170114-145113
base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
config: arm-u300_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
wget
https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp
On 01/14/2017 09:29 AM, Boris Brezillon wrote:
> On Fri, 13 Jan 2017 18:33:40 +0100
> Marek Vasut wrote:
>
>> On 01/13/2017 05:56 PM, Boris Brezillon wrote:
>>> On Fri, 13 Jan 2017 17:44:12 +0100
>>> Marek Vasut wrote:
>>>
On 01/13/2017 05:28 PM, Boris Brezillon wrote:
> On Fri, 13
Hi Linus,
Here's a set of fixes for the current series. This pull request
contains:
- The virtio_blk stack DMA corruption fix from Christoph, fixing and
issue with VMAP stacks.
- O_DIRECT blkbits calculation fix from Chandan.
- Discard regression fix from Christoph.
- Queue init error handli
Hi Will,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: f0ad17712b9f71c24e2b8b9725230ef57232377f
commit: da48d094ce5d7c7dcdad9011648a81c42fd1c2ef Kconfig: remove
HAVE_LATENCYTOP_SUPPORT
date: 12 months ago
config
Hi Tiantian,
[auto build test ERROR on tip/auto-latest]
[also build test ERROR on v4.10-rc3 next-20170113]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system]
url:
https://github.com/0day-ci/linux/commits/Xishi-Qiu/x86-call-smp-vmxoff-in-smp-sto
On Sat, Jan 14, 2017 at 01:57:57AM +, Al Viro wrote:
> OK. Let's wait for Alan to confirm that the last variant works and
> I'll send a pull request (with Cc: stable # v4.9).
... and here it is.
The following changes since commit b4b8664d291ac1998e0f0bcdc96b6397f0fe68b3:
arm64: don't pul
Change file permissions to octal style.
Found using checkpatch.
Signed-off-by: Derek Robson
---
drivers/staging/media/davinci_vpfe/vpfe_mc_capture.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/media/davinci_vpfe/vpfe_mc_capture.c
b/drivers/staging/media/d
Hi Alex,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: f0ad17712b9f71c24e2b8b9725230ef57232377f
commit: ebb5e78cc63417a35254a791de66e1cc84f963cc MIPS: Initial implementation
of a VDSO
date: 1 year, 2 months ago
On Sat, Jan 14, 2017 at 09:31:51PM +, Matthew Wilcox wrote:
> From: Johannes Weiner [mailto:han...@cmpxchg.org]
> > On Thu, Jan 12, 2017 at 05:28:23PM -0800, Matthew Wilcox wrote:
> > > The newly introduced warning in radix_tree_free_nodes() was testing the
> > > wrong variable; it should have
Hi Rich,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: f0ad17712b9f71c24e2b8b9725230ef57232377f
commit: b4214e41b7152b1964a3421a40251d202ae2d2c0 sh: add SMP support for J2
date: 5 months ago
config: sh-j2_defconf
Hi Finn,
Am 15.01.2017 um 12:47 schrieb Finn Thain:
> For the sake of discussion, I'll assume that the FDC driver will not
> be using DMA. (Perhaps FDC and SCSI can share the ST-DMA chip, using
> the present locking mechanism, but it would not simplify things much:
> when IDE no longer participat
Hi Guenter,
First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: f0ad17712b9f71c24e2b8b9725230ef57232377f
commit: 398c7500a1f5f74e207bd2edca1b1721b3cc1f1e MIPS: VDSO: Fix build error
with binutils 2.24 and earlier
date
Hi Krzk,
2017. 1. 14. PM 8:36 Krzysztof Kozlowski wrote:
> Hi,
>
> Support for Exynos4415 is being removed because:
> 1. There are no upstream users,
> 2. There are no known downstream users,
> 3. Except compile testing, you cannot build working kernel
> for Exynos4415 anymore.
>
> Patches a
Hi Andrew,
It's probably a bug fix that unveils the link errors.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: f0ad17712b9f71c24e2b8b9725230ef57232377f
commit: c60f169202c7643991a8b4bfeea60e06843d5b5a
arch/mn10300/kernel/fpu-nofpu.c: needs asm/elf.h
d
Peter,
On 1/11/17 18:57, Peter Zijlstra wrote:
On Mon, Jan 09, 2017 at 09:33:41PM -0600, Suravee Suthikulpanit wrote:
This patch contains the following minor fixup:
* Fixed overflow handling since u64 delta would lose the MSB sign bit.
Please explain.. afaict this actually introduces a bug.
Hi James,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: f0ad17712b9f71c24e2b8b9725230ef57232377f
commit: 034827c727f7f3946a18355b63995b402c226c82 MIPS: Fix -mabi=64 build of
vdso.lds
date: 3 months ago
config: m
Le 01/04/17 à 14:39, Florian Fainelli a écrit :
> This patch series builds on top of Laura's [PATCHv6 00/10]
> CONFIG_DEBUG_VIRTUAL
> for arm64 to add support for CONFIG_DEBUG_VIRTUAL for ARM.
>
> This was tested on a Brahma B15 platform (ARMv7 + HIGHMEM + LPAE).
>
> Note that the treewide chang
On 01/15/2017 12:54 AM, Eduardo Valentin wrote:
Folks,
On Wed, Jan 04, 2017 at 12:30:40AM +0800, ayaka wrote:
On 01/03/2017 09:13 AM, Randy Li wrote:
On 01/03/2017 09:02 AM, Caesar Wang wrote:
在 2017年01月03日 07:57, Randy Li 写道:
On 01/02/2017 09:16 PM, Caesar Wang wrote:
在 2016年12月31日 00:
Hi,
cgroup still lacks a good iocontroller. CFQ works well for hard disk, but not
much for SSD. This patch set try to add a conservative limit for blk-throttle.
It isn't a proportional scheduling, but can help prioritize cgroups. There are
several advantages we choose blk-throttle:
- blk-throttle
each queue will have a state machine. Initially queue is in LIMIT_LOW
state, which means all cgroups will be throttled according to their low
limit. After all cgroups with low limit cross the limit, the queue state
gets upgraded to LIMIT_MAX state.
For max limit, cgroup will use the limit configure
Add low limit for cgroup and corresponding cgroup interface. To be
consistent with memcg, we allow users configure .low limit higher than
.max limit. But the internal logic always assumes .low limit is lower
than .max limit. So we add extra bps/iops_conf fields in throtl_grp for
userspace configura
Last patch introduces a way to detect idle cgroup. We use it to make
upgrade/downgrade decision. And the new algorithm can detect completely
idle cgroup too, so we can delete the corresponding code.
Signed-off-by: Shaohua Li
---
block/blk-throttle.c | 40 ++--
One hard problem adding .low limit is to detect idle cgroup. If one
cgroup doesn't dispatch enough IO against its low limit, we must have a
mechanism to determine if other cgroups dispatch more IO. We added the
think time detection mechanism before, but it doesn't work for all
workloads. Here we ad
The throtl_slice is 100ms by default. This is a long time for SSD, a lot
of IO can run. To make cgroups have smoother throughput, we choose a
small value (20ms) for SSD.
Signed-off-by: Shaohua Li
---
block/blk-sysfs.c| 2 ++
block/blk-throttle.c | 18 +++---
block/blk.h
A cgroup gets assigned a low limit, but the cgroup could never dispatch
enough IO to cross the low limit. In such case, the queue state machine
will remain in LIMIT_LOW state and all other cgroups will be throttled
according to low limit. This is unfair for other cgroups. We should
treat the cgroup
We are going to support low/max limit, each cgroup will have 2 limits
after that. This patch prepares for the multiple limits change.
Signed-off-by: Shaohua Li
---
block/blk-throttle.c | 110 ---
1 file changed, 70 insertions(+), 40 deletions(-)
d
When queue is in LIMIT_LOW state and all cgroups with low limit cross
the bps/iops limitation, we will upgrade queue's state to
LIMIT_MAX. To determine if a cgroup exceeds its limitation, we check if
the cgroup has pending request. Since cgroup is throttled according to
the limit, pending request m
Here we introduce per-cgroup latency target. The target determines how a
cgroup can afford latency increasement. We will use the target latency
to calculate a threshold and use it to schedule IO for cgroups. If a
cgroup's bandwidth is below its low limit but its average latency is
below the thresho
On Sat, Jan 14, 2017 at 11:54:17AM -0800, Paul E. McKenney wrote:
> On Sat, Jan 14, 2017 at 10:35:50AM +0100, Ingo Molnar wrote:
> > * Paul E. McKenney wrote:
[ . . . ]
> > > + */
> > > +#ifdef CONFIG_PPC
> > > +#define smp_mb__after_unlock_lock() smp_mb() /* Full ordering for
> > > lock.
Add interface to configure the threshold. The io.low interface will
like:
echo "8:16 rbps=2097152 wbps=max idle=2000" > io.low
idle is in microsecond unit.
Signed-off-by: Shaohua Li
---
block/blk-throttle.c | 41 -
1 file changed, 28 insertions(+), 13 del
When queue state machine is in LIMIT_MAX state, but a cgroup is below
its low limit for some time, the queue should be downgraded to lower
state as one cgroup's low limit isn't met.
Signed-off-by: Shaohua Li
---
block/blk-throttle.c | 156 +++
1 fi
throtl_slice is important for blk-throttling. It's called slice
internally but it really is a time window blk-throttling samples data.
blk-throttling will make decision based on the samplings. An example is
bandwidth measurement. A cgroup's bandwidth is measured in the time
interval of throtl_slice
On Sat, Jan 14, 2017 at 10:31:15AM +0100, Ingo Molnar wrote:
>
> Noticed a few minor nits:
And thank you for the review and comments!
> * Paul E. McKenney wrote:
>
> > From: Lance Roy
> >
> > SRCU uses two per-cpu counters: a nesting counter to count the number of
> > active critical section
clean up the code to avoid using -1
Signed-off-by: Shaohua Li
---
block/blk-throttle.c | 32
1 file changed, 16 insertions(+), 16 deletions(-)
diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index a6bb4fe..e45bf50 100644
--- a/block/blk-throttle.c
+++ b
Currently there is no way to know the request size when the request is
finished. Next patch will need this info. We could add extra field to
record the size, but blk_issue_stat has enough space to record it, so
this patch just overloads blk_issue_stat. With this, we will have 49bits
to track time,
On Sat, Jan 14, 2017 at 10:35:50AM +0100, Ingo Molnar wrote:
>
> * Paul E. McKenney wrote:
>
> > If a process invokes synchronize_srcu(), is delayed just the right amount
> > of time, and thus does not sleep when waiting for the grace period to
> > complete, there is no ordering between the end
When cgroups all reach low limit, cgroups can dispatch more IO. This
could make some cgroups dispatch more IO but others not, and even some
cgroups could dispatch less IO than their low limit. For example, cg1
low limit 10MB/s, cg2 limit 80MB/s, assume disk maximum bandwidth is
120M/s for the workl
User configures latency target, but the latency threshold for each
request size isn't fixed. For a SSD, the IO latency highly depends on
request size. To calculate latency threshold, we sample some data, eg,
average latency for request size 4k, 8k, 16k, 32k .. 1M. The latency
threshold of each requ
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