Hi Linus,
This is the main drm pull request for 4.6 kernel.
The highlights are below, and there are a few merge conflicts,
but I think they should all be simple enough for you to take
care off. At least at the moment they are just the writecombine
interface changes.
Overall the coolest thing her
Hi Arnd,
2016-03-19 8:49 GMT+09:00 Masahiro Yamada :
> Hi Arnd,
>
> 2016-03-19 1:49 GMT+09:00 Arnd Bergmann :
>> On Tuesday 15 March 2016 11:01:00 Masahiro Yamada wrote:
>>> Olof, Arnd,
>>>
>>>
>>> I sent my patches around -rc4 and
>>> took action soon as requested.
>>>
>>> But, my series is stil
The only chip that needs the workarounds enabled is an early NMOS
device. That means that the common case is to disable them.
Unfortunately the sense of the flag is such that it has to be set
for the common case.
Rename the flag so that zero can be used to mean "no errata workarounds
needed". Thi
Only the atari_scsi and sun3_scsi drivers define DMA_MIN_SIZE.
Both drivers also define NCR5380_dma_xfer_len, which means
DMA_MIN_SIZE can be removed from the core driver.
This removes another discrepancy between the two core drivers.
Signed-off-by: Finn Thain
Tested-by: Michael Schmitz
---
C
This patch series has more macro elimination and some tweaks to the
DMA hooks so that all the wrapper drivers can share the same core
DMA algorithm. This resolves the major discrepancies between the two
core drivers, which relate to code conditional on the REAL_DMA and
PSEUDO_DMA macros.
After al
For those wrapper drivers which only implement Programmed IO, have
NCR5380_dma_xfer_len() evaluate to zero. That allows PDMA to be easily
disabled at run-time and so the PSEUDO_DMA macro is no longer needed.
Also remove the spin counters used for debugging pseudo DMA drivers.
Signed-off-by: Finn
The benefit of limiting can_queue to 1 is that atari_scsi shares the
ST DMA chip more fairly with other drivers (e.g. falcon-ide).
Unfortunately, this can limit SCSI bus utilization. On systems without
IDE, atari_scsi should issue SCSI commands whenever it can arbitrate for
the bus. Make that poss
I'm told that some targets are liable to disconnect a REQUEST SENSE
command. Theoretically this would cause a command undergoing autosense to
be moved onto the disconnected list. The bus reset handler must call
complete_cmd() for these commands, otherwise the hostdata->sensing pointer
will not get
Update kernel parameter documentation for atari_scsi, mac_scsi and
g_NCR5380 drivers. Remove duplication.
Signed-off-by: Finn Thain
Reviewed-by: Hannes Reinecke
---
Documentation/scsi/g_NCR5380.txt | 17 ++-
Documentation/scsi/scsi-parameters.txt | 11 +++---
drivers/
Fix various issues: Comments about bus errors are incorrect. The
PDMA asm must return the size of the memory access that faulted so the
transfer count can be adjusted accordingly. A phase change may cause a
bus error but should not be treated as failure. A bus error does not
always imply a phase ch
Drivers that define PSEUDO_DMA also define NCR5380_dma_xfer_len.
The core driver must call NCR5380_dma_xfer_len which means
FLAG_NO_PSEUDO_DMA can be eradicated from the core driver.
dmx3191d doesn't define PSEUDO_DMA and has no use for FLAG_NO_PSEUDO_DMA,
so remove it there also.
Signed-off-by:
Signed-off-by: Finn Thain
Reviewed-by: Hannes Reinecke
Tested-by: Michael Schmitz
---
drivers/scsi/NCR5380.c |6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
Index: linux/drivers/scsi/NCR5380.c
===
--- linux.orig/dr
The dmx3191d driver is not capable of DMA or PDMA so all transfers
use PIO. Now that large slow PIO transfers periodically stop and call
cond_resched(), the max_sectors limit can go away.
Signed-off-by: Finn Thain
Reviewed-by: Hannes Reinecke
---
drivers/scsi/dmx3191d.c |1 -
1 file change
Decode all bits in the chip registers. They are all useful at times.
Fix printk severity so that this output can be suppressed along with
the other debugging output.
Signed-off-by: Finn Thain
Reviewed-by: Hannes Reinecke
Tested-by: Michael Schmitz
---
drivers/scsi/NCR5380.c | 42 +++
Signed-off-by: Finn Thain
Reviewed-by: Hannes Reinecke
Tested-by: Michael Schmitz
---
drivers/scsi/NCR5380.c | 12 +---
drivers/scsi/NCR5380.h |4
drivers/scsi/arm/oak.c |2 --
drivers/scsi/dmx3191d.c |2 --
drivers/scsi/dtc.c | 12 +++-
driver
This setting does not need to be conditional on Atari ST or TT.
Signed-off-by: Finn Thain
Tested-by: Michael Schmitz
---
Changed since v1:
- Set the default cmd_per_lun to 4 based on test results.
Changed since v2:
- Revert the default cmd_per_lun to 2, like in the v1 patch, because
a uniform
Now that atari_scsi and sun3_scsi have been converted to use the NCR5380.c
core driver, remove atari_NCR5380.c. Also remove the last vestiges of its
Tagged Command Queueing implementation from the wrapper drivers.
The TCQ support in atari_NCR5380.c is abandoned by this patch. It is not
merged into
Those wrapper drivers which use DMA define the REAL_DMA macro and
those which use pseudo DMA define PSEUDO_DMA. These macros need to be
removed for a number of reasons, not least of which is to have drivers
share more code.
Redefine the PDMA send and receive hooks as DMA setup hooks, so that the
D
Add support for the custom Sun 3 DMA logic to the NCR5380.c core driver.
This code is copied from atari_NCR5380.c.
Signed-off-by: Finn Thain
Reviewed-by: Hannes Reinecke
Tested-by: Michael Schmitz
---
The Sun 3 DMA code is still configured by macros. I have simplified things
slightly but I ha
Add support for the Atari ST DMA chip to the NCR5380.c core driver.
This code is copied from atari_NCR5380.c.
Signed-off-by: Finn Thain
Reviewed-by: Hannes Reinecke
Tested-by: Michael Schmitz
---
drivers/scsi/NCR5380.c| 32
drivers/scsi/atari_scsi.c |
The driver has a limit of eight LUs because of the byte-sized bitfield
that is used for busy flags. That means the maximum LUN is 7. The default
is 8.
Signed-off-by: Finn Thain
Tested-by: Michael Schmitz
---
Changed since v1:
- Reduce shost->max_lun limit instead of adding 'MAX_LUN' limit.
--
For the NCR5380.c core driver, these macros are never used.
If REAL_DMA were to be defined, compilation would fail.
For the atari_NCR5380.c core driver, REAL_DMA is always defined.
Hence these macros are pointless.
Signed-off-by: Finn Thain
Reviewed-by: Hannes Reinecke
Tested-by: Michael Schmi
This change brings a number of improvements: fewer macros, better test
coverage, simpler code and sane Kconfig options. The downside is a small
chance of incompatibility (which seems unavoidable).
CONFIG_SCSI_GENERIC_NCR53C400 exists to enable or inhibit pseudo DMA
transfers when the driver is use
Standardize the DMA setup hooks so that the DMA implementation in
atari_NCR5380.c can be reconciled with pseudo DMA implementation in
NCR5380.c.
Calls to NCR5380_dma_recv_setup() and NCR5380_dma_send_setup() return
a negative value on failure, zero on PDMA transfer success and a positive
byte coun
The io_recovery_delay macro is intended to insert a microsecond delay
between the chip register accesses that begin a DMA operation. This
is reportedly needed for some ISA boards.
Reverse the sense of the macro test so that in the common case,
where no delay is required, drivers need not define th
Adopt the DMA implementation from atari_NCR5380.c. This means that
atari_scsi and sun3_scsi can make use of the NCR5380.c core driver
and the atari_NCR5380.c driver fork can be made redundant.
Signed-off-by: Finn Thain
Reviewed-by: Hannes Reinecke
Tested-by: Michael Schmitz
---
drivers/scsi/N
Hi all,
Please do not add any v4.7 related material to your linux-next included
trees until after v4.6-rc1 is released.
Changes since 20160318:
The ext4 tree gained a conflict against Linus' tree.
The drm tree still had its build failure for which I applied a fix patch.
Non-merge commits (rela
From: Joe Perches
Date: Thu, 10 Mar 2016 15:21:43 -0800
> Use the more normal kernel definition/declaration style.
>
> Done via:
>
> $ git ls-files arch/sparc | \
> xargs ./scripts/checkpatch.pl -f --fix-inplace --types=unspecified_int
>
> Signed-off-by: Joe Perches
Applied.
> -Original Message-
> From: Mathias Nyman [mailto:mathias.ny...@linux.intel.com]
> Sent: Friday, March 18, 2016 4:51 PM
> To: Rajesh Bhagat ; linux-...@vger.kernel.org; linux-
> ker...@vger.kernel.org
> Cc: gre...@linuxfoundation.org; mathias.ny...@intel.com; Sriram Dash
>
> Subject: Re
"Kirill A. Shutemov" writes:
> [ text/plain ]
> On Fri, Mar 18, 2016 at 07:23:41PM +0530, Aneesh Kumar K.V wrote:
>> "Kirill A. Shutemov" writes:
>>
>> > [ text/plain ]
>> > split_huge_pmd() for file mappings (and DAX too) is implemented by just
>> > clearing pmd entry as we can re-fill this ar
> -Original Message-
> From: Alan Stern [mailto:st...@rowland.harvard.edu]
> Sent: Friday, March 18, 2016 7:51 PM
> To: Rajesh Bhagat
> Cc: linux-...@vger.kernel.org; linux-kernel@vger.kernel.org;
> gre...@linuxfoundation.org; mathias.ny...@intel.com; Sriram Dash
>
> Subject: Re: [PATCH
On Fri, Mar 18, 2016 at 02:32:35PM +0100, Lucas Stach wrote:
> Hi Vlastimil, Joonsoo,
>
> Am Freitag, den 18.03.2016, 00:52 +0900 schrieb Joonsoo Kim:
> > 2016-03-18 0:43 GMT+09:00 Vlastimil Babka :
> > > On 03/17/2016 10:24 AM, Hanjun Guo wrote:
> > >>
> > >> On 2016/3/17 14:54, Joonsoo Kim wrote
Hi Linus,
ARC changes for 4.6-rc1. Nothing too exciting here although diffstat hows more
files touched than usual due to some sweeping defconfig / DT updates.
Please pull !
Thx,
-Vineet
->
The following changes since commit fc77dbd34c5c99bce46d40a2491937c3bcbd10af:
Linux 4.5-rc6 (
On Sunday 20 March 2016 06:12 AM, Rob Herring wrote:
> On Fri, Mar 18, 2016 at 10:56:29AM +0530, Vineet Gupta wrote:
>> ARC Timers have historically been probed directly.
>> As precursor to start probing Timers thru DT introduce these bindings
>> Note that to keep series bisectable, these bindings
On Thu, Mar 17, 2016 at 10:02:00AM +0100, Miklos Szeredi wrote:
> From: Miklos Szeredi
>
> This series fixes bugs in nfs and ext4 due to 4bacc9c9234c ("overlayfs: Make
> f_path always point to the overlay and f_inode to the underlay").
>
> Regular files opened on overlayfs will result in the fil
Hi Linus,
Could you please pull the MD update for 4.6? This update mainly fixes bugs.
- A raid5 discard related fix from Jes
- A MD multipath bio clone fix from Ming
- raid1 error handling deadlock fix from Nate and corresponding raid10 fix from
myself
- A raid5 stripe batch fix from Neil
- A pa
Hi James,
On 18/03/2016:06:12:20 PM, James Morse wrote:
> Hi Pratyush,
>
> On 18/03/16 14:43, Pratyush Anand wrote:
> > On 18/03/2016:02:02:49 PM, James Morse wrote:
> >> In kernel/entry.S when entered from EL0 we test for TIF_SINGLESTEP in the
> >> thread_info flags, and use disable_step_tsk/ena
On Mon, Mar 21, 2016 at 01:02:15AM -0400, Theodore Ts'o wrote:
> I have this patch in the ext4.git tree, but I'd like to get an
> Acked-by from Al before I send a pull request to Linus.
>
> Al? Any objections to my sending in this change via the ext4 tree?
>
On Thu, Mar 17, 2016 at 10:02:00AM +0100, Miklos Szeredi wrote:
> Add a new helper, file_dentry() [*], to get the filesystem's own dentry
> from the file. This simply compares file_inode(file->f_path.dentry) to
> file_inode(file) and if they are equal returns file->f_path.dentry (this is
> the com
'struct timeval' uses a 32 bit field for its 'seconds' value which
will overflow in year 2038 and beyond. This patch replaces the use
of timeval in nosy.c with timespec64 which doesn't suffer from y2038
issue. The code is correct as is - since it is only using the
microseconds portion of timeval. H
Zhao Lei writes:
> Currently, each container shared one copy of coredump setting
> with the host system, if host system changed the setting, each
> running containers will be affected.
>
> Moreover, it is not easy to let each container keeping their own
> coredump setting.
>
> We can use some wor
Procedure of page migration is as follows:
First of all, it should isolate a page from LRU and try to
migrate the page. If it is successful, it releases the page
for freeing. Otherwise, it should put the page back to LRU
list.
For LRU pages, we have used putback_lru_page for both freeing
and putb
Recently, I got many reports about perfermance degradation
in embedded system(Android mobile phone, webOS TV and so on)
and failed to fork easily.
The problem was fragmentation caused by zram and GPU driver
pages. Their pages cannot be migrated so compaction cannot
work well, either so reclaimer e
Currently, putback_zspage does free zspage under class->lock
if fullness become ZS_EMPTY but it makes trouble to implement
locking scheme for new zspage migration.
So, this patch is to separate free_zspage from putback_zspage
and free zspage out of class->lock which is preparation for
zspage migrat
There are many BUG_ON in zsmalloc.c which is not recommened so
change them as alternatives.
Normal rule is as follows:
1. avoid BUG_ON if possible. Instead, use VM_BUG_ON or VM_BUG_ON_PAGE
2. use VM_BUG_ON_PAGE if we need to see struct page's fields
3. use those assertion in primitive functions s
This patch cleans up function parameter "struct page".
Many functions of zsmalloc expects that page paramter is "first_page"
so use "first_page" rather than "page" for code readability.
Reviewed-by: Sergey Senozhatsky
Signed-off-by: Minchan Kim
---
mm/zsmalloc.c | 62 +++
Zsmalloc stores first free object's position into first_page->freelist
in each zspage. If we change it with object index from first_page
instead of location, we could squeeze it into page->mapping because
the number of bit we need to store offset is at most 11bit.
Signed-off-by: Minchan Kim
---
This patch introduces run-time migration feature for zspage.
To begin with, it supports only head page migration for
easy review(later patches will support tail page migration).
For migration, it supports three functions
* zs_page_isolate
It isolates a zspage which includes a subpage VM want to
Now, VM has a feature to migrate non-lru movable pages so
balloon doesn't need custom migration hooks in migrate.c
and compact.c. Instead, this patch implements page->mapping
->{isolate|migrate|putback} functions.
With that, we could remove hooks for ballooning in general
migration functions and m
Every zspage in a size_class has same number of max objects so
we could move it to a size_class.
Signed-off-by: Minchan Kim
---
mm/zsmalloc.c | 32 +++-
1 file changed, 15 insertions(+), 17 deletions(-)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index a0890e9003e2..8
Currently, we rely on class->lock to prevent zspage destruction.
It was okay until now because the critical section is short but
with run-time migration, it could be long so class->lock is not
a good apporach any more.
So, this patch introduces [un]freeze_zspage functions which
freeze allocated ob
Zsmalloc is ready for page migration so zram can use __GFP_MOVABLE
from now on.
I did test to see how it helps to make higher order pages.
Test scenario is as follows.
KVM guest, 1G memory, ext4 formated zram block device,
for i in `seq 1 8`;
do
dd if=/dev/vda1 of=mnt/test$i.txt bs=128M
We have allowed migration for only LRU pages until now and it was
enough to make high-order pages. But recently, embedded system(e.g.,
webOS, android) uses lots of non-movable pages(e.g., zram, GPU memory)
so we have seen several reports about troubles of small high-order
allocation. For fixing the
For tail page migration, we shouldn't use page->lru which
was used for page chaining because VM will use it for own
purpose so that we need another field for chaining.
For chaining, singly linked list is enough and page->index
of tail page to point first object offset in the page could
be replaced
This patch cleans up function parameter ordering to order
higher data structure first.
Reviewed-by: Sergey Senozhatsky
Signed-off-by: Minchan Kim
---
mm/zsmalloc.c | 50 ++
1 file changed, 26 insertions(+), 24 deletions(-)
diff --git a/mm/zsmallo
For supporting migration from VM, we need to have address_space
on every page so zsmalloc shouldn't use page->mapping. So,
this patch moves zs_meta from mapping to freelist.
Signed-off-by: Minchan Kim
---
mm/zsmalloc.c | 23 ---
1 file changed, 12 insertions(+), 11 deletions(
Currently, we store class:fullness into page->mapping.
The number of class we can support is 255 and fullness is 4 so
(8 + 2 = 10bit) is enough to represent them.
Meanwhile, the bits we need to store in-use objects in zspage
is that 11bit is enough.
For example, If we assume that 64K PAGE_SIZE, cl
This patch enables tail page migration of zspage.
In this point, I tested zsmalloc regression with micro-benchmark
which does zs_malloc/map/unmap/zs_free for all size class
in every CPU(my system is 12) during 20 sec.
It shows 1% regression which is really small when we consider
the benefit of th
For migration, we need to create sub-page chain of zspage
dynamically so this patch factors it out from alloc_zspage.
As a minor refactoring, it makes OBJ_ALLOCATED_TAG assign
more clear in obj_malloc(it could be another patch but it's
trivial so I want to put together in this patch).
Signed-off-
Let's remove unused pool param in obj_free
Reviewed-by: Sergey Senozhatsky
Signed-off-by: Minchan Kim
---
mm/zsmalloc.c | 7 +++
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 16556a6db628..a0890e9003e2 100644
--- a/mm/zsmalloc.c
+++ b/mm/z
6_64-2015-02-07.cgz/x86_64-rhel/gcc-4.9/9be4fd2c7723a3057b0b39676fe4c8d5fd7118a4/0"
job_file:
"/lkp/scheduled/lkp-ws02/bisect_fsmark-1x-32t-1HDD-ext4-nfsv4-8K-400M-fsyncBeforeClose-16d-256fpd-debian-x86_64-2015-02-07.cgz-x86_64-rhel-9be4fd2c7723a3057b0b39676fe4c8d5fd7118a4-20160320-39429
Hi Max,
Already in the tree:
http://git.linuxtv.org/media_tree.git/commit/drivers/media/dvb-core?id=711f3fba6ffd3914fd1b5ed9faf8d22bab6f2203
Cheers,
-olli
On 18 March 2016 at 23:31, Max Kellermann wrote:
> Breakage caused by commit f50d51661a
>
> Signed-off-by: Max Kellermann
> ---
> drivers/
l
/pkg/linux/x86_64-randconfig-i0-201612/gcc-5/5b3e3964dba5f5a3210ca931d523c1e1f3119b31/vmlinuz-4.5.0-rc1-00035-g5b3e396
-append 'root=/dev/ram0 user=lkp
job=/lkp/scheduled/vm-intel12-yocto-x86_64-6/bisect_boot-1-yocto-minimal-x86_64.cgz-x86_64-randconfig-i0-201612-5b3e3964dba5f5a3210ca931d523c
FYI, we noticed that piglit.time.voluntary_context_switches +917.2% change with
your commit.
https://github.com/0day-ci/linux
Lyude/drm-dp_helper-retry-on-ETIMEDOUT-in-drm_dp_dpcd_access/20160317-234351
commit 31f8862c6e6303223e946e6fcbdfa7f87274baef ("drm/dp_helper: retry on
-ETIMEDOUT in drm_
On Wed, 2016-03-16 at 09:23 +0100, Christoph Hellwig wrote:
> >
> We can defintively kill this one.
We want to support different size of pools.
How can we kill this one?
Or did you mean we just create a single pool with size SG_CHUNK_SIZE?
>
> > +static __init int sg_mempool_init(void)
> > +{
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