From: Rafael J. Wysocki rafael.j.wyso...@intel.com
Prevent platform devices from being created for ACPI LPSS devices
if CONFIG_X86_INTEL_LPSS is unset by compiling out the LPSS scan
handler's callbacks only in that case and still compiling its device
ID list in and registering the scan handler in
From: Zhang Rui rui.zh...@intel.com
Because of the growing demand for enumerating ACPI devices to
platform bus, change the code to enumerate ACPI device objects to
platform bus by default. Namely, create platform devices for the
ACPI device objects that
1. Have pnp.type.platform_id set (device
On Fri, May 30, 2014 at 06:38:10AM -0500, Trond Myklebust wrote:
On Fri, 2014-05-30 at 11:06 +0200, Thierry Reding wrote:
From: Thierry Reding tred...@nvidia.com
Commit febdbfe8a91c (arch: Prepare for smp_mb__{before,after}_atomic())
deprecated the
The higher levels of impedance have a higher minimum value than the
first level. As the same value was used for all levels, higher impedances
were reported with a very low level of accuracy. This patch applies the
approriate lower threshold for each level, whilst we are changing things
add a
Currently the I2C framework insists on devices supplying an I2C ID
table. Many of the devices which do so unnecessarily adding quite a
few wasted lines to kernel code. This patch allows drivers a means
to 'not' supply the aforementioned table and match on either DT
and/or ACPI match tables
Currently the I2C framework insists on devices supplying an I2C ID
table. Many of the devices which do so unnecessarily adding quite a
few wasted lines to kernel code. This patch allows drivers a means
to 'not' supply the aforementioned table and match on either DT
and/or ACPI match tables
Hi Wolfram,
Here we have two patches which achieve exactly the same aim. I
wasn't sure with method you'd prefer, so I thought I'd submit
both and you can make a choice.
Kind regards,
Lee
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Hi!
Creating this patch for the Eudyptula Challenge.
Replaced msleep() for a delay 20ms with a usleep_range() between 1us
and 15000us.
Also inserted a blank line after adeclaration.
So you are changing timings without testing. Plus, burning CPU power
instead of sleeping.
Hi!
So the /Documentation/timers/timers-howto.txt stats:
SLEEPING FOR ~USECS OR SMALL MSECS ( 10us - 20ms):
* Use usleep_range
- Why not msleep for (1ms - 20ms)?
Explained originally here:
http://lkml.org/lkml/2007/8/3/250
msleep(1~20) may not do what the caller intends, and
will
On 05/30/2014 08:10 PM, Wolfram Sang wrote:
Hi Wolfram:
Since this version resolved all comments, it's ok for you?
Sorry, I misunderstood. I thought a V4 was needed, but it isn't. I'll
try to have a look this weekend.
OK. Thanks.
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On Fri, May 30, 2014 at 01:26:36PM +0100, Lee Jones wrote:
Currently the I2C framework insists on devices supplying an I2C ID
table. Many of the devices which do so unnecessarily adding quite a
few wasted lines to kernel code. This patch allows drivers a means
to 'not' supply the
On Fri, May 30, 2014 at 06:49:03PM +0900, Chanwoo Choi wrote:
Hi Charles,
OK, Let me know about test result.
Thanks,
Chanwoo Choi
Yeah that seems to work fine here. For the Arizona bit you can
add:
Tested-by: Charles Keepax ckee...@opensource.wolfsonmicro.com
Thanks,
Charles
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To
On pią, 2014-05-30 at 13:50 +0200, Tomasz Figa wrote:
Hi Krzysztof,
On 13.05.2014 16:12, Krzysztof Kozlowski wrote:
On Exynos4212 USE_DELAYED_RESET_ASSERTION must be set in
ARM_CORE1_OPTION register during CPU power down. This is the proper way
of powering down CPU. Additionally without
Christoph Hellwig wrote:
: On Fri, May 16, 2014 at 02:06:42PM +0200, Jan Kasprzak wrote:
: any news with this patch? Will it be acked by you and submitted upstream?
: Thanks!
:
: Give me an Acked-by and I'll pull it in.
Acked-By: Jan Yenya Kasprzak k...@fi.muni.cz
Not sure whether I should
Ever since rtl8192u was added as a staging driver in v2.6.33 it contained
checks for CONFIG_IEEE80211_CRYPT_TKIP. But the Kconfig symbol
IEEE80211_CRYPT_TKIP was renamed to LIB80211_CRYPT_TKIP in v2.6.29. So
these checks have always evaluated to false. And these checks were rather
odd to begin
On Fri, 30 May 2014, Wolfram Sang wrote:
On Fri, May 30, 2014 at 01:26:36PM +0100, Lee Jones wrote:
Currently the I2C framework insists on devices supplying an I2C ID
table. Many of the devices which do so unnecessarily adding quite a
few wasted lines to kernel code. This patch allows
On 30.05.2014 14:46, Krzysztof Kozlowski wrote:
On pią, 2014-05-30 at 13:50 +0200, Tomasz Figa wrote:
Hi Krzysztof,
On 13.05.2014 16:12, Krzysztof Kozlowski wrote:
On Exynos4212 USE_DELAYED_RESET_ASSERTION must be set in
ARM_CORE1_OPTION register during CPU power down. This is the proper way
Hi Sachin,
On 29/05/14 08:30, Sachin Kamat wrote:
PTR_ERR_OR_ZERO simplifies the code.
Signed-off-by: Sachin Kamat sachin.ka...@linaro.org
Cc: Sylwester Nawrocki s.nawro...@samsung.com
---
drivers/phy/phy-exynos-mipi-video.c |5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
Not on my prespective. Its says ~20 ms actual sleep for any value
given in the 1~20ms range, so from my point of view it will sleep for
20ms, so I will save between 5 to 10ms. But maybe I'm seeing it the
wrong way.
Regards
2014-05-30 13:35 GMT+01:00 Pavel Machek pa...@ucw.cz:
Hi!
So the
On Fri, May 30, 2014 at 11:20:10AM +0800, Dave Young wrote:
For ioremapped efi memory aka old_map the virt addresses are not persistant
across kexec reboot. kexec-tools will read the runtime maps from sysfs then
pass them to 2nd kernel and assuming kexec efi boot is ok. This will cause
kexec
On Thu, May 29, 2014 at 05:26:49PM +0200, Frederic Weisbecker wrote:
Hi,
I've made it wait too much so I'm posting that for review now. This
implements range breakpoints on some AMD machine by extending the length
field.
Any comment?
hi,
perf tools patches look ok to me.. let me know
if I
Hi all,
I sometime see lockups when booting my KVM guest with the latest -next kernel,
it basically hangs right when it should start 'init', and after a while I get
the following spew:
[ 30.790833] BUG: spinlock lockup suspected on CPU#1, swapper/1/0
[ 30.770667] BUG: spinlock lockup
On Thu, May 29, 2014 at 07:52:00PM +0200, Stephen Warren wrote:
On 05/28/2014 10:51 AM, Peter De Schrijver wrote:
This patch set introduces the 'regs' debugfs entry which shows the
contents of all registers related to a clock.
Would it be better to create a regmap object for the entire
On Thu, May 29, 2014 at 04:54:00PM -0700, David Rientjes wrote:
On Thu, 29 May 2014, Marcelo Tosatti wrote:
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 3d54c41..3bbc23f 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -2374,6 +2374,7 @@ static struct cpuset
On Fri, May 23, 2014 at 3:33 PM, Thierry Reding
thierry.red...@gmail.com wrote:
From: Thierry Reding tred...@nvidia.com
This commit introduces a generic device tree binding for IOMMU devices.
Only a very minimal subset is described here, but it is enough to cover
the requirements of both the
/next-20140530/omap2plus_defconfig/dra7.txt#L151
as an indication of the warning.
Tony,
Would you prefer a patch on top of omap-for-v3.16/dt-v2 branch?
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On 05/29/2014 11:47 PM, Mike Turquette wrote:
Quoting Nishanth Menon (2014-05-29 16:22:45)
On 05/26/2014 08:07 AM, Thierry Reding wrote:
On Wed, May 14, 2014 at 12:35:18PM -0700, Mike Turquette wrote:
Quoting Thierry Reding (2014-05-14 07:27:40)
[...]
As for shared clocks I'm only aware of
On 23/05/14 16:53, Vincent Guittot wrote:
If the CPU is used for handling lot of IRQs, trig a load balance to check if
it's worth moving its tasks on another CPU that has more capacity
Signed-off-by: Vincent Guittot vincent.guit...@linaro.org
---
kernel/sched/fair.c | 13 +
1
Add a scrollback buffers for each VGA console. The benefit is that
the scrollback history is not flushed when switching between consoles
but is persistent.
The buffers are allocated on demand when a new console is opened.
Signed-off-by: Manuel Schölling manuel.schoell...@gmx.de
---
Hi Jacob, Suravee,
On Thu, May 29, 2014 at 05:26:50PM +0200, Frederic Weisbecker wrote:
From: Jacob Shin jacob.w.s...@gmail.com
Implement hardware breakpoint address mask for AMD Family 16h and
above processors. CPUID feature bit indicates hardware support for
DRn_ADDR_MASK MSRs. These
Currently the I2C framework insists on devices supplying an I2C ID
table. Many of the devices which do so unnecessarily adding quite a
few wasted lines to kernel code. This patch allows drivers a means
to 'not' supply the aforementioned table and match on either DT
and/or ACPI match
On Thu, May 29, 2014 at 05:26:51PM +0200, Frederic Weisbecker wrote:
From: Jacob Shin jacob.w.s...@gmail.com
Currently bp_len is given a default value of 4. Allow user to override it:
$ perf stat -e mem:0x1000/8
^
bp_len
If no
To be future-proof and for better readability the time comparisons are
modified to use time_before() instead of plain, error-prone math.
Signed-off-by: Manuel Schölling manuel.schoell...@gmx.de
---
drivers/misc/sgi-gru/grumain.c |4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff
Linus,
please pull from the tag firewire-fixes at
git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394.git
firewire-fixes
to receive a regression fix for the IEEE 1394 subsystem:
Re-enable IRQ-based asynchronous request reception at addresses below 128 TB.
Stefan Richter (1):
From: Panchaxari Prasannamurthy panchaxari.prasannamur...@linaro.org
Added support for coresight device in dts for Beagle Board, by adding
blocks of coresight, ETM, ETB blocks.
Signed-off-by: Panchaxari Prasannamurthy panchaxari.prasannamur...@linaro.org
---
arch/arm/boot/dts/omap3-beagle.dts |
From: Pratik Patel prat...@codeaurora.org
This driver manages CoreSight Replicator that takes single input
trace data stream and replicates it to produce two identical
trace data output streams. Replicators are typically used to
route single interleaved trace data stream to two or more sinks.
From: Mathieu Poirier mathieu.poir...@linaro.org
This RFC is rescucitating the work submitted by Pratik Patel in
2012 [1].
This set is addressing comments gathered from the initial RFC
and enhance the framework in a few areas. More specifically:
. Sysfs entries have been moved to debugfs.
.
From: Mathieu Poirier mathieu.poir...@linaro.org
Currently supporting ETM and ETB. Support for TPIU
and SDTI are yet to be added.
Signed-off-by: Mathieu Poirier mathieu.poir...@linaro.org
---
arch/arm/boot/dts/omap3-beagle-xm.dts | 30 ++
1 file changed, 30
From: Mathieu Poirier mathieu.poir...@linaro.org
Removing minimal support for etb/etm to favour an implentation
that is more flexible, extensible and capable of handling more
platforms.
Also removing the only client of the old driver. That code can
easily be replaced by entries for etb/etm in
I was thinking of removing it in Linux 3.17. I'm not even sure it
compiles right now, hasn't seen any action in years, and all open-source
userspace code to use it has been dead for years.
If you disagree, please speak up loudly in the next month.
Paolo
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From: Pratik Patel prat...@codeaurora.org
This driver manages CoreSight ETB (Embedded Trace Buffer) which
acts as a circular buffer sink collecting generated trace data.
Signed-off-by: Pratik Patel prat...@codeaurora.org
Signed-off-by: Panchaxari Prasannamurthy
From: Mathieu Poirier mathieu.poir...@linaro.org
Support for the 2 PTMs, 3 ETMs, funnel, TPIU and replicator
connected to the ETB are included. Proper handling of the
ITM and the replicator linked to it along with the CTIs
and SWO are not included.
Signed-off-by: Mathieu Poirier
From: Pratik Patel prat...@codeaurora.org
This driver manages CoreSight TPIU (Trace Port Interface Unit)
which acts as a sink. TPIU is typically connected to some offchip
hardware hosting a storage buffer.
Signed-off-by: Pratik Patel prat...@codeaurora.org
Signed-off-by: Panchaxari
From: Pratik Patel prat...@codeaurora.org
CoreSight components are compliant with the ARM CoreSight
architecture specification and can be connected in various
topologies to suite a particular SoCs tracing needs. These trace
components can generally be classified as sources, links and
sinks. Trace
From: Pratik Patel prat...@codeaurora.org
This driver manages CoreSight Funnel which acts as a link.
Funnels have multiple input ports (typically 8) each of which
represents an input trace data stream. These multiple input trace
data streams are interleaved into a single output stream coming
out
From: Pratik Patel prat...@codeaurora.org
This driver manages CoreSight TMC (Trace Memory Controller) which
can act as a link or a sink depending upon its configuration. It
can present itself as an ETF (Embedded Trace FIFO) or ETR
(Embedded Trace Router).
ETF when configured in circular buffer
On Thu, 29 May 2014, Andrew Morton wrote:
if (!nodemask gfp_zone(gfp_mask) policy_zone)
nodemask = node_states[N_ONLINE];
OK, thanks, I made the patch go away for now.
And another issue is that the policy_zone may be highmem on 32 bit
platforms which will result in
On 2014-05-30 06:11, Shaohua Li wrote:
On Fri, May 09, 2014 at 10:41:27AM -0600, Jens Axboe wrote:
On 05/09/2014 08:12 AM, Jens Axboe wrote:
On 05/09/2014 03:17 AM, Matias Bjørling wrote:
With multi-million IOPS and multi-node workloads, the atomic_t in_flight
tracking becomes a bottleneck.
On Thu, 29 May 2014, David Rientjes wrote:
When I said that my point about mempolicies needs more thought, I wasn't
expecting that there would be no discussion -- at least _something_ that
would say why we don't care about the mempolicy case.
Lets get Andi involved here too.
The motivation
On Fri, May 30, 2014 at 07:43:11AM -0600, mathieu.poir...@linaro.org wrote:
From: Mathieu Poirier mathieu.poir...@linaro.org
Removing minimal support for etb/etm to favour an implentation
that is more flexible, extensible and capable of handling more
platforms.
Also removing the only
Currently, we count the number of pages allocated to a per memcg cache
in memcg_cache_params-nr_pages. We only use this counter to find out if
the cache is empty and can be destroyed. So let's rename it to refcnt
and make it count not pages, but slabs so that we can use atomic_inc/dec
instead of
Hi,
When a memcg is turned offline, some of its kmem caches can still have
active objects and therefore cannot be destroyed immediately. Currently,
we simply leak such caches along with the owner memcg, which is bad and
should be resolved.
It would be perfect if we could move all slab pages of
First, nobody uses it. Second, it differs across the implementations:
for SLUB it always returns 0, for SLAB it returns 0 if the cache appears
to be empty. So let's get rid of it.
Signed-off-by: Vladimir Davydov vdavy...@parallels.com
---
include/linux/slab.h |2 +-
mm/slab.c|
We add slabs to per cpu partial lists on both objects allocation (see
get_partial_node) and free (see __slab_free). We use the same function,
put_cpu_partial, in both cases.
Since __slab_free can be executed with preempt/irqs enabled, we have to
use cmpxchg for adding a new element to a partial
On 2014-05-30 00:10, Rusty Russell wrote:
Jens Axboe ax...@kernel.dk writes:
If Rusty agrees, I'd like to add it for 3.16 with a stable marker.
Really stable? It improves performance, which is nice. But every patch
which goes into the kernel fixes a bug, improves clarity, improves
This will be used by the next patches.
Signed-off-by: Vladimir Davydov vdavy...@parallels.com
---
include/linux/slab.h |2 ++
mm/memcontrol.c |1 +
mm/slab.h| 10 ++
3 files changed, 13 insertions(+)
diff --git a/include/linux/slab.h b/include/linux/slab.h
To speed up further allocations, SLUB may keep some empty slabs on per
cpu/node partial lists. If the cache is dead, i.e. belongs to a memcg
that was turned offline, there is no need in that, because dead caches
are never allocated from.
What is worse, keeping empty slabs on the list will prevent
There is no use in keeping free objects/slabs on dead memcg caches,
because they will never be allocated. So let's make cache_reap() shrink
as many free objects from such caches as possible.
Note the difference between SLAB and SLUB handling of dead memcg caches.
For SLUB, dead cache destruction
SLUB's kmem_cache_shrink not only removes empty slabs from the cache,
but also sorts slabs by the number of objects in-use to cope with
fragmentation. To achieve that, it tries to allocate a temporary array.
If it fails, it will abort the whole procedure.
This is unacceptable for kmemcg, where we
When the memcg_cache_params-refcnt goes to 0, schedule the worker that
will unregister the cache. To prevent this from happening when the owner
memcg is alive, keep the refcnt incremented during memcg lifetime.
Note, this doesn't guarantee that the cache that belongs to a dead memcg
will go away
NAK for all the reasons I mentioned in the previous submission in 2012.
You partially did the right thing - you read through the previous
submission, and you said in your cover message that you had addressed
some of the comments from that submission.
What I find extremely distasteful is that you
On Fri, 30 May 2014 20:37:58 +1000
Benjamin Herrenschmidt b...@kernel.crashing.org wrote:
We've switched to a 9235 instead which seems to work fine.
Weird (I hadn't seen that you reported the 9235 working...), I have
IOMMU problems with a 9235...
What system are you running it on (when you say
On 05/30/2014 09:11 AM, Sasha Levin wrote:
Hi all,
I sometime see lockups when booting my KVM guest with the latest -next kernel,
it basically hangs right when it should start 'init', and after a while I get
the following spew:
[ 30.790833] BUG: spinlock lockup suspected on CPU#1,
Hello Doug,
On 05/29/2014 11:21 PM, Doug Anderson wrote:
Right now if you've got earlyprintk enabled on exynos5420-peach-pit
then you'll get a hang on boot. Here's why:
1. The i2c-s3c2410 driver will probe at subsys_initcall. It will
enable its clock and disable it. This is the clock
On Fri, 30 May 2014, Frederic Weisbecker wrote:
+ cpu_stat_off = kmalloc(cpumask_size(), GFP_KERNEL);
+ cpumask_copy(cpu_stat_off, cpu_online_mask);
Actually looks like you can as well remove that cpumask and use
cpu_online_mask directly.
That would mean I would offline cpus that do
On Thu, 20 Feb 2014 17:44:33 +0900
Yoshihiro YUNOMAE yoshihiro.yunomae...@hitachi.com wrote:
Introduce nr_saved_cmdlines I/F for changing the number of pid-comm list.
What's an I/F?
saved_cmdlines can store 128 command names using SAVED_CMDLINES now, but
'no-existing processes' names are
On 23/05/14 16:52, Vincent Guittot wrote:
power_orig is only changed for system with a SMT sched_domain level in order
to
reflect the lower capacity of CPUs. Heterogenous system also have to reflect
an
original capacity that is different from the default value.
Create a more generic
On 05/29/2014 10:20 PM, Alex Elder wrote:
On 05/23/2014 07:53 PM, Mike Turquette wrote:
Quoting Alex Elder (2014-05-20 05:52:39)
@@ -743,11 +746,16 @@ struct clk *kona_clk_setup(struct kona_clk *bcm_clk)
clk = clk_register(NULL, bcm_clk-hw);
if (IS_ERR(clk)) {
On Fri, 30 May 2014, Frederic Weisbecker wrote:
On Thu, May 29, 2014 at 02:56:15PM -0500, Christoph Lameter wrote:
-static void start_cpu_timer(int cpu)
+static void __init start_shepherd_timer(void)
{
- struct delayed_work *work = per_cpu(vmstat_work, cpu);
+ int cpu;
+
+
On Fri 30-05-14 09:58:14, Peter Hurley wrote:
On 05/30/2014 09:11 AM, Sasha Levin wrote:
Hi all,
I sometime see lockups when booting my KVM guest with the latest -next
kernel,
it basically hangs right when it should start 'init', and after a while I get
the following spew:
[
On 2014-05-09 22:00, Shaohua Li wrote:
On Fri, May 09, 2014 at 08:00:18AM -0700, Christoph Hellwig wrote:
On Fri, May 09, 2014 at 08:07:33PM +0800, Shaohua Li wrote:
flush request is special, which borrows tag from other request. Need a special
handling to get it from tag.
Thanks, we
I had a 9230...on older kernels it worked ok so long as you did not
do any smart commands, I removed it and went to something that works.
Marvell appears to be hit and miss with some cards/chips working
right and some not...
Do enough smartcmds and the entire board (all 4 ports) locked up and
-Original Message-
From: Murali Karicheri [mailto:m-kariche...@ti.com]
Sent: Thursday, May 29, 2014 12:32 PM
To: ABRAHAM, KISHON VIJAY
Cc: devicet...@vger.kernel.org; linux-...@vger.kernel.org; linux-arm-
ker...@lists.infradead.org; linux-o...@vger.kernel.org;
linux-...@vger.kernel.org;
Hi Manuel,
On Fri, May 30, 2014 at 3:27 PM, Manuel Schölling
manuel.schoell...@gmx.de wrote:
Add a scrollback buffers for each VGA console. The benefit is that
the scrollback history is not flushed when switching between consoles
but is persistent.
The buffers are allocated on demand when a
Am Freitag, 30. Mai 2014, 10:41:31 schrieb Ivan T. Ivanov:
On Wed, 2014-05-28 at 10:48 +0200, Linus Walleij wrote:
On Wed, May 28, 2014 at 10:36 AM, Heiko Stübner he...@sntech.de wrote:
Am Mittwoch, 28. Mai 2014, 10:15:43 schrieb Linus Walleij:
On Tue, May 27, 2014 at 3:09 PM, Heiko
On Fri, 30 May 2014, Vladimir Davydov wrote:
Currently, we count the number of pages allocated to a per memcg cache
in memcg_cache_params-nr_pages. We only use this counter to find out if
the cache is empty and can be destroyed. So let's rename it to refcnt
and make it count not pages, but
On Thu, 29 May 2014 17:27:16 +1000
Jon Maxwell jmaxwel...@gmail.com wrote:
There has been a number incidents recently where customers running KVM have
reported that VM hosts on different Hypervisors are unreachable. Based on
pcap traces we found that the bridge was broadcasting the ARP request
2014-05-30 16:53 GMT+09:00 Gioh Kim gioh@lge.com:
Joonsoo,
I'm attaching a patch for combination of __rmqueue and __rmqueue_cma.
I didn't test fully but my board is turned on and working well if no frequent
memory allocations.
I'm sorry to send not-tested code.
I just want to report
On Fri, 30 May 2014, Vladimir Davydov wrote:
When the memcg_cache_params-refcnt goes to 0, schedule the worker that
will unregister the cache. To prevent this from happening when the owner
memcg is alive, keep the refcnt incremented during memcg lifetime.
Acked-by: Christoph Lameter
On Fri, 30 May 2014, Vladimir Davydov wrote:
This will be used by the next patches.
Acked-by: Christoph Lameter c...@linux.com
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Hello Everyone,
Below is the current ACPI/PM queue for 3.16, including some things still
being run through the build robot and a couple of things still under
discussion.
I'm still considering a couple of additional patchsets already sent that
require some fixups, but apart from those, I'm not
On Thu, May 29, 2014 at 12:36 AM, Bjorn Helgaas bhelg...@google.com wrote:
On Mon, May 26, 2014 at 05:18:09PM +0200, Andreas Noever wrote:
Please adjust the subject to match the drivers/pci convention, i.e., change
pci: Add pci_fixup_suspend_late quirk pass.
to
PCI: Add
On 05/29/2014 11:10 PM, Xiubo Li wrote:
This watchdog driver will be working on IMX2+, Vybrid, LS1, LS2+
platforms, and will be in different endianness mode in those SoCs:
SoCs CPU endian mode WDT endian mode
IMX2+LE
On Thu, 29 May 2014 15:36:22 -0700 (PDT)
David Miller da...@davemloft.net wrote:
From: Linus Lüssing linus.luess...@web.de
Date: Sun, 25 May 2014 07:03:21 +0200
Changes in v2:
I really need a bridging expert to review this series, thank you.
I am fine with these, but would like original
On Sun, 25 May 2014 07:03:24 +0200
Linus Lüssing linus.luess...@web.de wrote:
With this new, exported function br_multicast_list_adjacent(net_dev) a
list of IPv4/6 addresses is returned. This list contains all multicast
addresses sensed by the bridge multicast snooping feature on all bridge
Commit 8313b8e57f55b15e5b7f7fc5d1630bbf686a9a97 changed
way of adding device to read-only array. Used routine
md_reap_sync_thread() which also trigger finish_reshape(),
can break reshape process, if it was restarted.
This part of function should do only necessary operations, that is:
1) call
It is natural to use task concurrency (running tasks in the rq) as load
indicator. We calculate CC for task concurrency by two steps:
1) Divide continuous time into periods of time, and average task concurrency
in period, for tolerating the transient bursts:
a = sum(concurrency * time) / period
Hi Ingo, PeterZ, Rafael, and others,
The current scheduler’s load balancing is completely work-conserving. In some
workload, generally low CPU utilization but immersed with CPU bursts of
transient tasks, migrating task to engage all available CPUs for
work-conserving can lead to significant
Since rq-avg is not made use of anywhere (I really can't find it),
and the code is in fair scheduler's critical path, remove it.
Sorry if anybody wants to use it, just at least temporarily remove it as of now.
Signed-off-by: Yuyang Du yuyang...@intel.com
---
kernel/sched/debug.c |8
Currently, CPU CC is per CPU. To consolidate, the formula is based on a
heuristic.
Suppose we have 2 CPUs, their task concurrency over time is ('-' means no
task, 'x' having tasks):
1)
CPU0: ----- (CC[0])
CPU1: - (CC[1])
2)
CPU0: ----- (CC[0])
CPU1:
We need these cpumasks to aid in cosolidated load balancing
Signed-off-by: Yuyang Du yuyang...@intel.com
---
kernel/sched/fair.c |8
1 file changed, 8 insertions(+)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 96d6f64..5755746 100644
--- a/kernel/sched/fair.c
+++
sysctl_sched_cc_sum_period is the CC update period. Make it changable via
sysctl tool. In general, the longer this period, the stabler and slower to
respond to task concurrency change on this CPU.
Signed-off-by: Yuyang Du yuyang...@intel.com
---
include/linux/sched/sysctl.h |4
We intercept load balancing to contain the load and load balancing in
the consolidated CPUs according to our consolidating mechanism.
In idle balancing, we do two things:
1) Skip pulling task to the idle non-consolidated CPUs.
2) In addition, for consolidated Idle CPU, we aggressively pull
We intercept load balancing to contain the load and load balancing in
the consolidated CPUs according to our consolidating mechanism.
In periodic nohz idle balance, we skip the idle but non-consolidated
CPUs from load balancing.
Signed-off-by: Yuyang Du yuyang...@intel.com
---
We intercept load balancing to contain the load and load balancing in
the consolidated CPUs according to our consolidating mechanism.
In wakeup/fork/exec load balaning, when to find the idlest sched_group,
we first try to find the consolidated group
Signed-off-by: Yuyang Du yuyang...@intel.com
We intercept load balancing to contain the load and load balancing in
the consolidated CPUs according to our consolidating mechanism.
In periodic load balancing, we do two things:
1) Skip pulling task to the non-consolidated CPUs.
2) In addition, for consolidated Idle CPU, we aggressively pull
In WAKE_AFFINE, we do not simply select idle, but bias wakee than waker
if the cc of the wakee and waker (in this order) is capable of handling
the wakee task
Signed-off-by: Yuyang Du yuyang...@intel.com
---
kernel/sched/fair.c | 13 -
1 file changed, 12 insertions(+), 1
Workload Consolidation is completely CPU topology and policy driven. To do so,
we define SD_WORKLOAD_CONSOLIDATION, and add some fields in sched_domain struct:
1) total_groups is the group number in total in this domain
2) group_number is this CPU's group sequence number
3) consolidating_coeff is
Write additional CPU topology info in sched_domain for our use in
cpu_attach_domain()
Signed-off-by: Yuyang Du yuyang...@intel.com
---
kernel/sched/core.c | 27 +++
1 file changed, 27 insertions(+)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index
On pią, 2014-05-30 at 14:56 +0200, Tomasz Figa wrote:
On 30.05.2014 14:46, Krzysztof Kozlowski wrote:
On pią, 2014-05-30 at 13:50 +0200, Tomasz Figa wrote:
Hi Krzysztof,
On 13.05.2014 16:12, Krzysztof Kozlowski wrote:
On Exynos4212 USE_DELAYED_RESET_ASSERTION must be set in
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