dma_alloc_coherent fragmentation

dma_alloc_coherent fragmentation

[Kamat, Nishant]

Forwarding on behalf of Nishanth Menon:

-----Original Message-----
From: Menon, Nishanth 
Sent: Tuesday, March 17, 2009 8:17 AM
To: 'linux-arm-kernel@lists.arm.linux.org.uk'
Cc: Gupta, Ramesh; Kevin Hilman; linux-omap@vger.kernel.org; Ramirez Luna, Omar; Kanigeri, Hari; Ameya Palande; Guzman Lugo, Fernando; Ameya Palande
Subject: dma_alloc_coherent fragmentation

Looping in linux-arm ML:

Discussion Ref: [1](linux-omap mailing list)
While working with Linux OMAP kernel[2] we found that on allocating 4 meg chunks using dma_alloc_coherent and de-allocating with dma_free_coherent in a loop using a test driver[7], the memory is getting fragmented as shown by Ameya's observation [3] finally resulting in dump_stack due to lack of pages.

Searching through previous archives, found [4] which seem to imply that allocating chunks greater than 1 page could cause fragmentation.

I wonder why we see this even if we allocate and free the memory in sequence as in [5]. This seems to happen on 2.6.28 and 2.6.29 but not on the 2.6.27 based kernel[6].

Regards,
Nishanth Menon

Ref:
[1] http://marc.info/?t=123719779100002&r=1&w=2
[2] http://git.kernel.org/?p=linux/kernel/git/tmlind/linux-omap-2.6.git
[3] http://marc.info/?l=linux-omap&m=123722460022336&w=2
[4] http://lkml.indiana.edu/hypermail/linux/kernel/0706.0/0370.html 
[5] http://marc.info/?l=linux-omap&m=123719772811746&w=2
[6] http://git.omapzoom.com/?p=repo/omapkernel.git;
[7] http://marc.info/?l=linux-omap&m=123719772811746&q=p3 

Re: dma_alloc_coherent fragmentation

[Russell King - ARM Linux]

On Wed, Mar 18, 2009 at 08:03:45AM -0500, Kamat, Nishant wrote:
> Forwarding on behalf of Nishanth Menon:

Make sure you're up to date with fixes to the ioremap code, specifically
24f11ec001920f1cfaeeed8e8b55725d900bbb56.  This is not in 2.6.28,
2.6.29-rc1, 2.6.29-rc2, but is in -rc3 and later.  2.6.29 itself hasn't
been released yet so I don't know what "seems to happen on 2.6.28 and
2.6.29" actually means because its nonsense.

So, please test with 2.6.29-rc3 or later.

RE: dma_alloc_coherent fragmentation

[Menon, Nishanth]

> -----Original Message-----
> From: Russell King - ARM Linux [mailto:linux@arm.linux.org.uk]
> Sent: Wednesday, March 18, 2009 9:25 PM
> To: Kamat, Nishant
> Cc: linux-arm-kernel@lists.arm.linux.org.uk; Menon, Nishanth; linux-
> omap@vger.kernel.org; Ramirez Luna, Omar; Kanigeri, Hari; Guzman Lugo,
> Fernando; Kevin Hilman; 2ameya@gmail.com
> Subject: Re: dma_alloc_coherent fragmentation

> Make sure you're up to date with fixes to the ioremap code, specifically
> 24f11ec001920f1cfaeeed8e8b55725d900bbb56.  This is not in 2.6.28,
> 2.6.29-rc1, 2.6.29-rc2, but is in -rc3 and later.  2.6.29 itself hasn't
> been released yet so I don't know what "seems to happen on 2.6.28 and
> 2.6.29" actually means because its nonsense.

Apologies on the confusion.

For this issue, the pertinent tree would be the master branch of [1] linux-omap tree which is synced to 2.6.29-rc8. And yes, the mentioned commit ID is part of the git log.

Relevant test code and report of the crash is in [2]. Additional observation in [3]

Regards,
Nishanth Menon

Ref:
[1] http://git.kernel.org/?p=linux/kernel/git/tmlind/linux-omap-2.6.git
[2] http://marc.info/?l=linux-omap&m=123719772811746&w=2
[3] http://marc.info/?l=linux-omap&m=123722460022336&w=2

Re: dma_alloc_coherent fragmentation

[Hiroshi DOYU]

Hi Nishant,

From: "ext Kamat, Nishant" <nskamat@ti.com>
Subject: dma_alloc_coherent fragmentation
Date: Wed, 18 Mar 2009 14:03:45 +0100

> Forwarding on behalf of Nishanth Menon:
> 
> -----Original Message-----
> From: Menon, Nishanth 
> Sent: Tuesday, March 17, 2009 8:17 AM
> To: 'linux-arm-kernel@lists.arm.linux.org.uk'
> Cc: Gupta, Ramesh; Kevin Hilman; linux-omap@vger.kernel.org; Ramirez Luna, Omar; Kanigeri, Hari; Ameya Palande; Guzman Lugo, Fernando; Ameya Palande
> Subject: dma_alloc_coherent fragmentation
> 
> Looping in linux-arm ML:
> 
> Discussion Ref: [1](linux-omap mailing list)
> While working with Linux OMAP kernel[2] we found that on allocating
> 4 meg chunks using dma_alloc_coherent and de-allocating with
> dma_free_coherent in a loop using a test driver[7], the memory is
> getting fragmented as shown by Ameya's observation [3] finally
> resulting in dump_stack due to lack of pages.

What would happen with __GFP_RECLAIMABLE for dma_alloc_coherent()?

RE: dma_alloc_coherent fragmentation

[Menon, Nishanth]

Hi Hiroshi,
> -----Original Message-----
> From: Hiroshi DOYU [mailto:Hiroshi.DOYU@nokia.com]
> Sent: Thursday, March 19, 2009 8:43 AM

> 
> 
> What would happen with __GFP_RECLAIMABLE for dma_alloc_coherent()?
As per [1], GFP_TEMPORARY might be the right approach.. but yes,
Changing dummy to do:
dma_alloc_coherent(NULL, b[i].size, &b[i].phy, GFP_TEMPORARY);

Seems to resolve the issue with the dummy driver.

The question however still remains: For a driver to allocate a memory which is not temporary in nature we'd recommend GFP_KERNEL. But as part of the exit sequence the driver will deallocate that memory and as part of init sequence, reallocate. Given that the memory is not reclaimed immediately, it looks like the only way to ensure that would be to do GFP_KERNEL | __GFP_RECLAIMABLE (which essentially is the definition of GFP_TEMPORARY).

Regards,
Nishanth Menon
Ref:
[1] http://lkml.indiana.edu/hypermail/linux/kernel/0705.2/0638.html

Re: dma_alloc_coherent fragmentation

[pramod gurav]

Hi Nishant,
I am facing the same problem to allocate a chunk of 4MB on omap3evm
using dma_alloc_coherent. I used the test driver mentioned here
http://www.mail-archive.com/linux-omap@vger.kernel.org/msg11074.html

I applied the patch for
ioremap(24f11ec001920f1cfaeeed8e8b55725d900bbb56) suggested by
Russell, but stiill seeing the error saying

coherent allocation too big (requested 0x400000 mask 0xffffffff)
alloc[0] - virt=0x00000000 phy=0xFFFFFFFF size=0x00400000
Allocation failed idx=0
insmod: cannot insert `dummy.ko': Cannot allocate memory (-1): Cannot
allocate memory

I changed the GFP_KERNEL to GFP_TEMPORARY and also to (GFP_KERNEL |
__GFP_RECLAIMABLE), but failed to insmod the module.
I am working on linux-omap 2.6.28 kernel. Even I could not allocate
memory size greater than 1MB.
Has this been fixed? Are there any patches to fix this issue?

On Thu, Mar 19, 2009 at 2:36 PM, Menon, Nishanth <nm@ti.com> wrote:
> Hi Hiroshi,
>> -----Original Message-----
>> From: Hiroshi DOYU [mailto:Hiroshi.DOYU@nokia.com]
>> Sent: Thursday, March 19, 2009 8:43 AM
>
>>
>>
>> What would happen with __GFP_RECLAIMABLE for dma_alloc_coherent()?
> As per [1], GFP_TEMPORARY might be the right approach.. but yes,
> Changing dummy to do:
> dma_alloc_coherent(NULL, b[i].size, &b[i].phy, GFP_TEMPORARY);
>
> Seems to resolve the issue with the dummy driver.
>
> The question however still remains: For a driver to allocate a memory which is not temporary in nature we'd recommend GFP_KERNEL. But as part of the exit sequence the driver will deallocate that memory and as part of init sequence, reallocate. Given that the memory is not reclaimed immediately, it looks like the only way to ensure that would be to do GFP_KERNEL | __GFP_RECLAIMABLE (which essentially is the definition of GFP_TEMPORARY).
>
> Regards,
> Nishanth Menon
> Ref:
> [1] http://lkml.indiana.edu/hypermail/linux/kernel/0705.2/0638.html
> --
> To unsubscribe from this list: send the line "unsubscribe linux-omap" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>



-- 
Best Regards
Pramod
--
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RE: dma_alloc_coherent fragmentation

[Shilimkar, Santosh]

DMA pool is better solution for such usecases.
> -----Original Message-----
> From: linux-omap-owner@vger.kernel.org 
> [mailto:linux-omap-owner@vger.kernel.org] On Behalf Of pramod gurav
> Sent: Wednesday, April 22, 2009 1:17 PM
> To: Menon, Nishanth
> Cc: linux-omap@vger.kernel.org
> Subject: Re: dma_alloc_coherent fragmentation
> 
> Hi Nishant,
> I am facing the same problem to allocate a chunk of 4MB on omap3evm
> using dma_alloc_coherent. I used the test driver mentioned here
> http://www.mail-archive.com/linux-omap@vger.kernel.org/msg11074.html
> 
> I applied the patch for
> ioremap(24f11ec001920f1cfaeeed8e8b55725d900bbb56) suggested by
> Russell, but stiill seeing the error saying
> 
> coherent allocation too big (requested 0x400000 mask 0xffffffff)
> alloc[0] - virt=0x00000000 phy=0xFFFFFFFF size=0x00400000
> Allocation failed idx=0
> insmod: cannot insert `dummy.ko': Cannot allocate memory (-1): Cannot
> allocate memory
> 
> I changed the GFP_KERNEL to GFP_TEMPORARY and also to (GFP_KERNEL |
> __GFP_RECLAIMABLE), but failed to insmod the module.
> I am working on linux-omap 2.6.28 kernel. Even I could not allocate
> memory size greater than 1MB.
> Has this been fixed? Are there any patches to fix this issue?
> 
> On Thu, Mar 19, 2009 at 2:36 PM, Menon, Nishanth <nm@ti.com> wrote:

Re: dma_alloc_coherent fragmentation

[pramod gurav]

Thanks for the quick reply.
Can you please point me to some links on DMA pools. I am just blank on this. :(
I will still search for this in net.
-- 
Best Regards
Pramod

On Wed, Apr 22, 2009 at 1:20 PM, Shilimkar, Santosh
<santosh.shilimkar@ti.com> wrote:
> DMA pool is better solution for such usecases.
>> -----Original Message-----
>> From: linux-omap-owner@vger.kernel.org
>> [mailto:linux-omap-owner@vger.kernel.org] On Behalf Of pramod gurav
>> Sent: Wednesday, April 22, 2009 1:17 PM
>> To: Menon, Nishanth
>> Cc: linux-omap@vger.kernel.org
>> Subject: Re: dma_alloc_coherent fragmentation
>>
>> Hi Nishant,
>> I am facing the same problem to allocate a chunk of 4MB on omap3evm
>> using dma_alloc_coherent. I used the test driver mentioned here
>> http://www.mail-archive.com/linux-omap@vger.kernel.org/msg11074.html
>>
>> I applied the patch for
>> ioremap(24f11ec001920f1cfaeeed8e8b55725d900bbb56) suggested by
>> Russell, but stiill seeing the error saying
>>
>> coherent allocation too big (requested 0x400000 mask 0xffffffff)
>> alloc[0] - virt=0x00000000 phy=0xFFFFFFFF size=0x00400000
>> Allocation failed idx=0
>> insmod: cannot insert `dummy.ko': Cannot allocate memory (-1): Cannot
>> allocate memory
>>
>> I changed the GFP_KERNEL to GFP_TEMPORARY and also to (GFP_KERNEL |
>> __GFP_RECLAIMABLE), but failed to insmod the module.
>> I am working on linux-omap 2.6.28 kernel. Even I could not allocate
>> memory size greater than 1MB.
>> Has this been fixed? Are there any patches to fix this issue?
>>
>> On Thu, Mar 19, 2009 at 2:36 PM, Menon, Nishanth <nm@ti.com> wrote:
>

RE: dma_alloc_coherent fragmentation

[Shilimkar, Santosh]

The actual apis are in mm/dmapool.c. There are quite a few users in the usb stack.

Here are few examples.

Amd5536udc.c (drivers\usb\gadget):	
Buffer.c (drivers\usb\core):
Ci13xxx_udc.c (drivers\usb\gadget)
Ci13xxx_udc.c (drivers\usb\gadget)
Cppi_dma.c (drivers\usb\musb):	
Ehci-mem.c (drivers\usb\host):
Ehci-mem.c (drivers\usb\host):
Ehci-mem.c (drivers\usb\host):
Ehci-mem.c (drivers\usb\host):
Ixp4xx_crypto.c (drivers\crypto):	
Ixp4xx_crypto.c (drivers\crypto):	
Ohci-mem.c (drivers\usb\host):
Ohci-mem.c (drivers\usb\host):
Uhci-hcd.c (drivers\usb\host):
Uhci-hcd.c (drivers\usb\host):

Regards,
Santosh
 

> -----Original Message-----
> From: pramod gurav [mailto:pramodforum@gmail.com] 
> Sent: Wednesday, April 22, 2009 1:54 PM
> To: Shilimkar, Santosh
> Cc: Menon, Nishanth; linux-omap@vger.kernel.org
> Subject: Re: dma_alloc_coherent fragmentation
> 
> Thanks for the quick reply.
> Can you please point me to some links on DMA pools. I am just 
> blank on this. :(
> I will still search for this in net.
> -- 

RE: dma_alloc_coherent fragmentation

[Gupta, Ramesh]

Hi Pramod,
 

> -----Original Message-----
> From: linux-omap-owner@vger.kernel.org 
> [mailto:linux-omap-owner@vger.kernel.org] On Behalf Of pramod gurav
> Sent: Wednesday, April 22, 2009 1:17 PM
> To: Menon, Nishanth
> Cc: linux-omap@vger.kernel.org
> Subject: Re: dma_alloc_coherent fragmentation
> 
> Hi Nishant,
> I am facing the same problem to allocate a chunk of 4MB on omap3evm
> using dma_alloc_coherent. I used the test driver mentioned here
> http://www.mail-archive.com/linux-omap@vger.kernel.org/msg11074.html
> 
> I applied the patch for
> ioremap(24f11ec001920f1cfaeeed8e8b55725d900bbb56) suggested by
> Russell, but stiill seeing the error saying
> 
> coherent allocation too big (requested 0x400000 mask 0xffffffff)
> alloc[0] - virt=0x00000000 phy=0xFFFFFFFF size=0x00400000
> Allocation failed idx=0
> insmod: cannot insert `dummy.ko': Cannot allocate memory (-1): Cannot
> allocate memory
> 
> I changed the GFP_KERNEL to GFP_TEMPORARY and also to (GFP_KERNEL |
> __GFP_RECLAIMABLE), but failed to insmod the module.
> I am working on linux-omap 2.6.28 kernel. Even I could not allocate
> memory size greater than 1MB.
> Has this been fixed? Are there any patches to fix this issue?
> 

What is the value for 'CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE' (default is 2 in omap_3430sdp_defconfig), Can you please
try increasing to 8?

Regards
Ramesh Gupta G

Re: dma_alloc_coherent fragmentation

[pramod gurav]

Hi Ramesh,
This worked. Thanks a lot.


-- 
Best Regards
Pramod


On Wed, Apr 22, 2009 at 2:44 PM, Gupta, Ramesh <grgupta@ti.com> wrote:
> Hi Pramod,
>
>
>> -----Original Message-----
>> From: linux-omap-owner@vger.kernel.org
>> [mailto:linux-omap-owner@vger.kernel.org] On Behalf Of pramod gurav
>> Sent: Wednesday, April 22, 2009 1:17 PM
>> To: Menon, Nishanth
>> Cc: linux-omap@vger.kernel.org
>> Subject: Re: dma_alloc_coherent fragmentation
>>
>> Hi Nishant,
>> I am facing the same problem to allocate a chunk of 4MB on omap3evm
>> using dma_alloc_coherent. I used the test driver mentioned here
>> http://www.mail-archive.com/linux-omap@vger.kernel.org/msg11074.html
>>
>> I applied the patch for
>> ioremap(24f11ec001920f1cfaeeed8e8b55725d900bbb56) suggested by
>> Russell, but stiill seeing the error saying
>>
>> coherent allocation too big (requested 0x400000 mask 0xffffffff)
>> alloc[0] - virt=0x00000000 phy=0xFFFFFFFF size=0x00400000
>> Allocation failed idx=0
>> insmod: cannot insert `dummy.ko': Cannot allocate memory (-1): Cannot
>> allocate memory
>>
>> I changed the GFP_KERNEL to GFP_TEMPORARY and also to (GFP_KERNEL |
>> __GFP_RECLAIMABLE), but failed to insmod the module.
>> I am working on linux-omap 2.6.28 kernel. Even I could not allocate
>> memory size greater than 1MB.
>> Has this been fixed? Are there any patches to fix this issue?
>>
>
> What is the value for 'CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE' (default is 2 in omap_3430sdp_defconfig), Can you please
> try increasing to 8?
>
> Regards
> Ramesh Gupta G
>

RE: dma_alloc_coherent fragmentation

[Shilimkar, Santosh]

This would just temporarily delay the problem. People have even tried with values of 14 MB and all. Nishant M knows one such recent issue.

Bye the way use of this macro for general DMAable memory is discouraged. You can find many threads on ARM mailing list. 

Regards,
Santosh
 

> -----Original Message-----
> From: linux-omap-owner@vger.kernel.org 
> [mailto:linux-omap-owner@vger.kernel.org] On Behalf Of pramod gurav
> Sent: Wednesday, April 22, 2009 3:14 PM
> To: Gupta, Ramesh
> Cc: Menon, Nishanth; linux-omap@vger.kernel.org
> Subject: Re: dma_alloc_coherent fragmentation
> 
> Hi Ramesh,
> This worked. Thanks a lot.
> 
> 
> -- 
> Best Regards
> Pramod
> 
> 
> On Wed, Apr 22, 2009 at 2:44 PM, Gupta, Ramesh <grgupta@ti.com> wrote:
> > Hi Pramod,
> >
> >
> >> -----Original Message-----
> >> From: linux-omap-owner@vger.kernel.org
> >> [mailto:linux-omap-owner@vger.kernel.org] On Behalf Of pramod gurav
> >> Sent: Wednesday, April 22, 2009 1:17 PM
> >> To: Menon, Nishanth
> >> Cc: linux-omap@vger.kernel.org
> >> Subject: Re: dma_alloc_coherent fragmentation
> >>
> >> Hi Nishant,
> >> I am facing the same problem to allocate a chunk of 4MB on omap3evm
> >> using dma_alloc_coherent. I used the test driver mentioned here
> >> 
> http://www.mail-archive.com/linux-omap@vger.kernel.org/msg11074.html
> >>
> >> I applied the patch for
> >> ioremap(24f11ec001920f1cfaeeed8e8b55725d900bbb56) suggested by
> >> Russell, but stiill seeing the error saying
> >>
> >> coherent allocation too big (requested 0x400000 mask 0xffffffff)
> >> alloc[0] - virt=0x00000000 phy=0xFFFFFFFF size=0x00400000
> >> Allocation failed idx=0
> >> insmod: cannot insert `dummy.ko': Cannot allocate memory 
> (-1): Cannot
> >> allocate memory
> >>
> >> I changed the GFP_KERNEL to GFP_TEMPORARY and also to (GFP_KERNEL |
> >> __GFP_RECLAIMABLE), but failed to insmod the module.
> >> I am working on linux-omap 2.6.28 kernel. Even I could not allocate
> >> memory size greater than 1MB.
> >> Has this been fixed? Are there any patches to fix this issue?
> >>
> >
> > What is the value for 'CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE' 
> (default is 2 in omap_3430sdp_defconfig), Can you please
> > try increasing to 8?
> >
> > Regards
> > Ramesh Gupta G
> >
> --
> To unsubscribe from this list: send the line "unsubscribe 
> linux-omap" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 
> 

Re: Bridge issue #3! dma_alloc_coherent causing crash - pm branch

[Kevin Hilman]

"Gupta, Ramesh" <grgupta@ti.com> writes:

[...]

>> > Sounds like a memory leak in the bridge driver to me.  I 
>> suggest you 
>> > enable memory leak debugging.  In Kconfig
>> > 
>> >    Kernel Hacking -->  Kernel debugging
>> > 
>> > Enable 'Debug slab memory allocations' and its child 'Memory leak 
>> > debugging'.
>> > 
>> > Or, you could switch to the SLUB allocator which has some more 
>> > flexible debug options which can be controlled at boot-time 
>> from the cmdline.
>> > 
>> > While you are in the Kernel debugging menu, make sure you enable 
>> > 'Verbose BUG()' and 'Verbose kernel errors'.  This will ensure that 
>> > any memory leaks will be dumped with some extra debug output.
>
> I enabled all the above options, do I need to add some boot options to enable 
> Debug messages? I am not seeing any debug information displayed in the cosole by default.
> Looks like I am mising some thing :( . Any comments?
>

You'll only see extra messages when the kerel hits a BUG() or a WARN().  If
you don't see anything more verbose with all these options enabled, then
the kernel is not detecting any problems.

Kevin

RE: Bridge issue #3! dma_alloc_coherent causing crash - pm branch

[Gupta, Ramesh]

Kevin,

> >
> > I enabled all the above options, do I need to add some boot 
> options to 
> > enable Debug messages? I am not seeing any debug 
> information displayed in the cosole by default.
> > Looks like I am mising some thing :( . Any comments?
> >
> 
> You'll only see extra messages when the kerel hits a BUG() or 
> a WARN().  If you don't see anything more verbose with all 
> these options enabled, then the kernel is not detecting any problems.

Thank you.

Regards
Ramesh

dma_alloc_coherent bug?

[Menon, Nishanth]

[-- Attachment #1: Type: text/plain, Size: 5259 bytes --]

> -----Original Message-----
> From: Gupta, Ramesh
> Sent: Saturday, March 14, 2009 6:26 AM
> To: Kevin Hilman
> Cc: Menon, Nishanth; linux-omap@vger.kernel.org
> Subject: RE: Bridge issue #3! dma_alloc_coherent causing crash - pm branch
> > >
> > > I enabled all the above options, do I need to add some boot
> > options to
> > > enable Debug messages? I am not seeing any debug
> > information displayed in the cosole by default.
> > > Looks like I am mising some thing :( . Any comments?
> > >
> >
> > You'll only see extra messages when the kerel hits a BUG() or
> > a WARN().  If you don't see anything more verbose with all
> > these options enabled, then the kernel is not detecting any problems.
> 
> Thank you.
> 

Back to the dummy driver. Ramesh noted that even the dummy driver crashes on the pm branch and the master branch with larger number of iterations.

This issue can be duplicated in the linux-omap master branch as follows: apply the attached patch and build with the defconfig attached,

The following test script:
for i in 0 1 2 3 4 5 6 7 8 9
do
for j in 0 1 2 3 4 5 6 7 8 9
do
for k in 0 1 2 3 4 5 6 7 8 9
do
for l in 0 1 2 3 4 5 6 7 8 9
do
        echo "insmod $i$j$k$l"
        insmod ./dummy.ko try=3 || exit 1
        echo "rmmod"
        rmmod dummy.ko || exit 1
done
done
done
done

will cause a crashes as follows:

insmod 0279
alloc[0] - virt=0xFF027000 phy=0x82C00000 size=0x00400000
alloc[1] - virt=0xFF427000 phy=0x80BEC000 size=0x00001000
alloc[2] - virt=0xFF428000 phy=0x817C0000 size=0x00011800
rmmod
free[0] - virt=0xff027000 phy=0x82c00000 size=0x00400000
free[1] - virt=0xff427000 phy=0x80bec000 size=0x00001000
free[2] - virt=0xff428000 phy=0x817c0000 size=0x00011800
insmod 0280
insmod: page allocation failure. order:10, mode:0xd0
[<c0031e14>] [<c0031e14>] (dump_stack+0x0/0x14) (dump_stack+0x0/0x14) from [<c008194c>] from [<c008194c>] (__alloc_pages_internal+0x384/0x39c)
(__alloc_pages_internal+0x384/0x39c)
[<c00815c8>] [<c00815c8>] (__alloc_pages_internal+0x0/0x39c) (__alloc_pages_internal+0x0/0x39c) from [<c003394c>] from [<c003394c>] (__dma_alloc+0x170/0x3c8)
(__dma_alloc+0x170/0x3c8)
[<c00337dc>] [<c00337dc>] (__dma_alloc+0x0/0x3c8) (__dma_alloc+0x0/0x3c8) from [<c0033c30>] from [<c0033c30>] (dma_alloc_coherent+0x58/0x64)
(dma_alloc_coherent+0x58/0x64)
[<c0033bd8>] [<c0033bd8>] (dma_alloc_coherent+0x0/0x64) (dma_alloc_coherent+0x0/0x64) from [<bf693050>] from [<bf693050>] (dummy_init+0x50/0x10c [dummy])
(dummy_init+0x50/0x10c [dummy])
 r7:bf690718 r7:bf690718 r6:00000000 r6:00000000 r5:00000000 r5:00000000 r4:bf690720 r4:bf690720

[<bf693000>] [<bf693000>] (dummy_init+0x0/0x10c [dummy]) (dummy_init+0x0/0x10c [dummy]) from [<c002d2f8>] from [<c002d2f8>] (__exception_text_end+0x60/0x198)
(__exception_text_end+0x60/0x198)
 r7:00000000 r7:00000000 r6:c03ae4c0 r6:c03ae4c0 r5:bf69073c r5:bf69073c r4:00006d4d r4:00006d4d

[<c002d298>] [<c002d298>] (__exception_text_end+0x0/0x198) (__exception_text_end+0x0/0x198) from [<c00761c8>] from [<c00761c8>] (sys_init_module+0x98/0x198)
(sys_init_module+0x98/0x198)
[<c0076130>] [<c0076130>] (sys_init_module+0x0/0x198) (sys_init_module+0x0/0x198) from [<c002dda0>] from [<c002dda0>] (ret_fast_syscall+0x0/0x2c)
(ret_fast_syscall+0x0/0x2c)
 r7:00000080 r7:00000080 r6:00000000 r6:00000000 r5:0000000b r5:0000000b r4:00000000 r4:00000000

Mem-info:
Mem-info:
Normal per-cpu:
Normal per-cpu:
CPU    0: hi:   42, btch:   7 usd:   1
CPU    0: hi:   42, btch:   7 usd:   1
Active_anon:0 active_file:0 inactive_anon:182
 inactive_file:38 unevictable:0 dirty:0 writeback:0 unstable:0
 free:30546 slab:493 mapped:1 pagetables:31 bounce:0
Active_anon:0 active_file:0 inactive_anon:182
 inactive_file:38 unevictable:0 dirty:0 writeback:0 unstable:0
 free:30546 slab:493 mapped:1 pagetables:31 bounce:0
Normal free:122184kB min:1440kB low:1800kB high:2160kB active_anon:0kB inactive_anon:728kB active_file:0kB inactive_file:152kB unevictable:0kB present:130048kB pages_scanned:0 ao
Normal free:122184kB min:1440kB low:1800kB high:2160kB active_anon:0kB inactive_anon:728kB active_file:0kB inactive_file:152kB unevictable:0kB present:130048kB pages_scanned:0 ao
lowmem_reserve[]:lowmem_reserve[]: 0 0 0 0

Normal: Normal: 124*4kB 124*4kB 105*8kB 105*8kB 71*16kB 71*16kB 53*32kB 53*32kB 40*64kB 40*64kB 28*128kB 28*128kB 31*256kB 31*256kB 29*512kB 29*512kB 29*1024kB 29*1024kB 29*2048B
= 122184kB
40 total pagecache pages
40 total pagecache pages
0 pages in swap cache
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Swap cache stats: add 0, delete 0, find 0/0
Free swap  = 0kB
Free swap  = 0kB
Total swap = 0kB
Total swap = 0kB
32768 pages of RAM
32768 pages of RAM
30599 free pages
30599 free pages
1256 reserved pages
1256 reserved pages
493 slab pages
493 slab pages
40 pages shared
40 pages shared
0 pages swap cached
0 pages swap cached
<6>alloc[0] - virt=0x00000000 phy=0xFFFFFFFF size=0x00400000
alloc[0] - virt=0x00000000 phy=0xFFFFFFFF size=0x00400000
<3>Allocation failed idx=0
Allocation failed idx=0
insmod: cannot insert `./dummy.ko': Cannot allocate memory (-1): Cannot allocate memory

Regards,
Nishanth Menon

[-- Attachment #2: 0001-MASTER-Dummy-Add-Dummy-driver-for-alloc_coherent-test.patch --]
[-- Type: application/octet-stream, Size: 3305 bytes --]

From 3d08024140e49d09bdaa40c0b3676f41bfe3b277 Mon Sep 17 00:00:00 2001
From: Nishanth Menon <nm@ti.com>
Date: Mon, 16 Mar 2009 04:31:00 -0500
Subject: [PATCH] Dummy: Add Dummy driver for alloc_coherent test

Test dma_alloc_coherent

Signed-off-by: Nishanth Menon <nm@ti.com>
---
 drivers/misc/Kconfig  |    4 ++
 drivers/misc/Makefile |    1 +
 drivers/misc/dummy.c  |   82 +++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 87 insertions(+), 0 deletions(-)
 create mode 100644 drivers/misc/dummy.c

diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 3c74d73..739de1e 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -13,6 +13,10 @@ menuconfig MISC_DEVICES
 
 if MISC_DEVICES
 
+config MISC_DUMMY
+	tristate "dummy lil driver"
+	default m
+
 config ATMEL_PWM
 	tristate "Atmel AT32/AT91 PWM support"
 	depends on AVR32 || ARCH_AT91SAM9263 || ARCH_AT91SAM9RL || ARCH_AT91CAP9
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index b162e23..9dad6c5 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -2,6 +2,7 @@
 # Makefile for misc devices that really don't fit anywhere else.
 #
 
+obj-$(CONFIG_MISC_DUMMY)	+= dummy.o
 obj-$(CONFIG_IBM_ASM)		+= ibmasm/
 obj-$(CONFIG_HDPU_FEATURES)	+= hdpuftrs/
 obj-$(CONFIG_ATMEL_PWM)		+= atmel_pwm.o
diff --git a/drivers/misc/dummy.c b/drivers/misc/dummy.c
new file mode 100644
index 0000000..ffcef99
--- /dev/null
+++ b/drivers/misc/dummy.c
@@ -0,0 +1,82 @@
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/dma-mapping.h>
+
+struct mem_s {
+	void *vir;
+	u32 phy;
+	u32 size;
+};
+
+static struct mem_s b[] = {
+	{0, 0, 4194304},
+	{0, 0, 4096},
+	{0, 0, 71680},
+};
+
+static int try;
+module_param(try, int, 0);
+MODULE_PARM_DESC(try, "try=3");
+static int rev;
+module_param(rev, int, 0);
+MODULE_PARM_DESC(rev, "rev=0");
+
+static int __init dummy_init(void)
+{
+	int i;
+	if (!try)
+		try = (sizeof(b) / sizeof(struct mem_s));
+	if (try > (sizeof(b) / sizeof(struct mem_s))) {
+		printk(KERN_ERR "Give me proper try value\n");
+		return -EINVAL;
+	}
+	for (i = 0; i < try; i++) {
+		b[i].vir =
+		    dma_alloc_coherent(NULL, b[i].size, &b[i].phy, GFP_KERNEL);
+		printk(KERN_INFO
+		       "alloc[%d] - virt=0x%08X phy=0x%08X size=0x%08X\n", i,
+		       (u32) (b[i].vir), b[i].phy, b[i].size);
+		if (b[i].vir == NULL) {
+			printk(KERN_ERR "Allocation failed idx=%d\n", i);
+			/* Free up all the prev allocs */
+			i--;
+			while (i >= 0) {
+				dma_free_coherent(NULL, b[i].size, b[i].vir,
+						  b[i].phy);
+				i--;
+			}
+			return -ENOMEM;
+
+		}
+	}
+	return 0;
+}
+
+module_init(dummy_init);
+
+static void __exit dummy_exit(void)
+{
+	int i;
+	if (rev) {
+		for (i = try - 1; i > -1; i--) {
+			printk(KERN_INFO
+			       "free[%d] - virt=0x%08x phy=0x%08x size=0x%08x\n",
+			       i, (u32) b[i].vir, b[i].phy, b[i].size);
+			dma_free_coherent(NULL, b[i].size, b[i].vir, b[i].phy);
+		}
+	} else {
+		for (i = 0; i < try; i++) {
+			printk(KERN_INFO
+			       "free[%d] - virt=0x%08x phy=0x%08x size=0x%08x\n",
+			       i, (u32) b[i].vir, b[i].phy, b[i].size);
+			dma_free_coherent(NULL, b[i].size, b[i].vir, b[i].phy);
+		}
+	}
+}
+
+module_exit(dummy_exit);
+
+MODULE_LICENSE("GPL");
-- 
1.5.4.3


[-- Attachment #3: kern.master.defconfig --]
[-- Type: application/octet-stream, Size: 39084 bytes --]

#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.29-rc8-omap1
# Mon Mar 16 04:39:56 2009
#
CONFIG_ARM=y
CONFIG_SYS_SUPPORTS_APM_EMULATION=y
CONFIG_GENERIC_GPIO=y
CONFIG_GENERIC_TIME=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_MMU=y
# CONFIG_NO_IOPORT is not set
CONFIG_GENERIC_HARDIRQS=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_HAVE_LATENCYTOP_SUPPORT=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_HARDIRQS_SW_RESEND=y
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_RWSEM_GENERIC_SPINLOCK=y
# CONFIG_ARCH_HAS_ILOG2_U32 is not set
# CONFIG_ARCH_HAS_ILOG2_U64 is not set
CONFIG_GENERIC_HWEIGHT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y
CONFIG_VECTORS_BASE=0xffff0000
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"

#
# General setup
#
CONFIG_EXPERIMENTAL=y
CONFIG_BROKEN_ON_SMP=y
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
CONFIG_SWAP=y
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
# CONFIG_POSIX_MQUEUE is not set
CONFIG_BSD_PROCESS_ACCT=y
# CONFIG_BSD_PROCESS_ACCT_V3 is not set
# CONFIG_TASKSTATS is not set
# CONFIG_AUDIT is not set

#
# RCU Subsystem
#
CONFIG_CLASSIC_RCU=y
# CONFIG_TREE_RCU is not set
# CONFIG_PREEMPT_RCU is not set
# CONFIG_TREE_RCU_TRACE is not set
# CONFIG_PREEMPT_RCU_TRACE is not set
# CONFIG_IKCONFIG is not set
CONFIG_LOG_BUF_SHIFT=14
CONFIG_GROUP_SCHED=y
CONFIG_FAIR_GROUP_SCHED=y
# CONFIG_RT_GROUP_SCHED is not set
CONFIG_USER_SCHED=y
# CONFIG_CGROUP_SCHED is not set
# CONFIG_CGROUPS is not set
CONFIG_SYSFS_DEPRECATED=y
CONFIG_SYSFS_DEPRECATED_V2=y
# CONFIG_RELAY is not set
# CONFIG_NAMESPACES is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_SYSCTL=y
CONFIG_ANON_INODES=y
CONFIG_EMBEDDED=y
CONFIG_UID16=y
# CONFIG_SYSCTL_SYSCALL is not set
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_ALL is not set
CONFIG_KALLSYMS_EXTRA_PASS=y
CONFIG_HOTPLUG=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
CONFIG_AIO=y
CONFIG_VM_EVENT_COUNTERS=y
CONFIG_COMPAT_BRK=y
CONFIG_SLAB=y
# CONFIG_SLUB is not set
# CONFIG_SLOB is not set
# CONFIG_PROFILING is not set
CONFIG_HAVE_OPROFILE=y
# CONFIG_KPROBES is not set
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_CLK=y
CONFIG_HAVE_GENERIC_DMA_COHERENT=y
CONFIG_SLABINFO=y
CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=0
CONFIG_MODULES=y
# CONFIG_MODULE_FORCE_LOAD is not set
CONFIG_MODULE_UNLOAD=y
# CONFIG_MODULE_FORCE_UNLOAD is not set
CONFIG_MODVERSIONS=y
CONFIG_MODULE_SRCVERSION_ALL=y
CONFIG_BLOCK=y
# CONFIG_LBD is not set
# CONFIG_BLK_DEV_IO_TRACE is not set
# CONFIG_BLK_DEV_BSG is not set
# CONFIG_BLK_DEV_INTEGRITY is not set

#
# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_AS=y
CONFIG_IOSCHED_DEADLINE=y
CONFIG_IOSCHED_CFQ=y
CONFIG_DEFAULT_AS=y
# CONFIG_DEFAULT_DEADLINE is not set
# CONFIG_DEFAULT_CFQ is not set
# CONFIG_DEFAULT_NOOP is not set
CONFIG_DEFAULT_IOSCHED="anticipatory"
CONFIG_FREEZER=y

#
# System Type
#
# CONFIG_ARCH_AAEC2000 is not set
# CONFIG_ARCH_INTEGRATOR is not set
# CONFIG_ARCH_REALVIEW is not set
# CONFIG_ARCH_VERSATILE is not set
# CONFIG_ARCH_AT91 is not set
# CONFIG_ARCH_CLPS711X is not set
# CONFIG_ARCH_EBSA110 is not set
# CONFIG_ARCH_EP93XX is not set
# CONFIG_ARCH_FOOTBRIDGE is not set
# CONFIG_ARCH_NETX is not set
# CONFIG_ARCH_H720X is not set
# CONFIG_ARCH_IMX is not set
# CONFIG_ARCH_IOP13XX is not set
# CONFIG_ARCH_IOP32X is not set
# CONFIG_ARCH_IOP33X is not set
# CONFIG_ARCH_IXP23XX is not set
# CONFIG_ARCH_IXP2000 is not set
# CONFIG_ARCH_IXP4XX is not set
# CONFIG_ARCH_L7200 is not set
# CONFIG_ARCH_KIRKWOOD is not set
# CONFIG_ARCH_KS8695 is not set
# CONFIG_ARCH_NS9XXX is not set
# CONFIG_ARCH_LOKI is not set
# CONFIG_ARCH_MV78XX0 is not set
# CONFIG_ARCH_MXC is not set
# CONFIG_ARCH_ORION5X is not set
# CONFIG_ARCH_PNX4008 is not set
# CONFIG_ARCH_PXA is not set
# CONFIG_ARCH_RPC is not set
# CONFIG_ARCH_SA1100 is not set
# CONFIG_ARCH_S3C2410 is not set
# CONFIG_ARCH_S3C64XX is not set
# CONFIG_ARCH_SHARK is not set
# CONFIG_ARCH_LH7A40X is not set
# CONFIG_ARCH_DAVINCI is not set
CONFIG_ARCH_OMAP=y
# CONFIG_ARCH_MSM is not set
# CONFIG_ARCH_W90X900 is not set

#
# TI OMAP Implementations
#
CONFIG_ARCH_OMAP_OTG=y
# CONFIG_ARCH_OMAP1 is not set
# CONFIG_ARCH_OMAP2 is not set
CONFIG_ARCH_OMAP3=y

#
# OMAP Feature Selections
#
# CONFIG_OMAP_DEBUG_POWERDOMAIN is not set
# CONFIG_OMAP_DEBUG_CLOCKDOMAIN is not set
CONFIG_OMAP_SMARTREFLEX=y
# CONFIG_OMAP_SMARTREFLEX_TESTING is not set
CONFIG_OMAP_RESET_CLOCKS=y
CONFIG_OMAP_BOOT_TAG=y
CONFIG_OMAP_BOOT_REASON=y
# CONFIG_OMAP_COMPONENT_VERSION is not set
# CONFIG_OMAP_GPIO_SWITCH is not set
CONFIG_OMAP_MUX=y
CONFIG_OMAP_MUX_DEBUG=y
CONFIG_OMAP_MUX_WARNINGS=y
# CONFIG_OMAP_MCBSP is not set
# CONFIG_OMAP_MBOX_FWK is not set
# CONFIG_OMAP_MPU_TIMER is not set
CONFIG_OMAP_32K_TIMER=y
CONFIG_OMAP_32K_TIMER_HZ=128
CONFIG_OMAP_TICK_GPTIMER=1
CONFIG_OMAP_DM_TIMER=y
CONFIG_OMAP_LL_DEBUG_UART1=y
# CONFIG_OMAP_LL_DEBUG_UART2 is not set
# CONFIG_OMAP_LL_DEBUG_UART3 is not set
CONFIG_OMAP_SERIAL_WAKE=y
CONFIG_ARCH_OMAP34XX=y
CONFIG_ARCH_OMAP3430=y

#
# OMAP Board Type
#
# CONFIG_MACH_NOKIA_RX51 is not set
# CONFIG_MACH_OMAP_LDP is not set
CONFIG_MACH_OMAP_3430SDP=y
# CONFIG_MACH_OMAP3EVM is not set
# CONFIG_MACH_OMAP3_BEAGLE is not set
# CONFIG_MACH_OVERO is not set
# CONFIG_MACH_OMAP3_PANDORA is not set

#
# Processor Type
#
CONFIG_CPU_32=y
CONFIG_CPU_32v6K=y
CONFIG_CPU_V7=y
CONFIG_CPU_32v7=y
CONFIG_CPU_ABRT_EV7=y
CONFIG_CPU_PABRT_IFAR=y
CONFIG_CPU_CACHE_V7=y
CONFIG_CPU_CACHE_VIPT=y
CONFIG_CPU_COPY_V6=y
CONFIG_CPU_TLB_V7=y
CONFIG_CPU_HAS_ASID=y
CONFIG_CPU_CP15=y
CONFIG_CPU_CP15_MMU=y

#
# Processor Features
#
CONFIG_ARM_THUMB=y
# CONFIG_ARM_THUMBEE is not set
# CONFIG_CPU_ICACHE_DISABLE is not set
# CONFIG_CPU_DCACHE_DISABLE is not set
# CONFIG_CPU_BPREDICT_DISABLE is not set
CONFIG_HAS_TLS_REG=y
# CONFIG_OUTER_CACHE is not set

#
# Bus support
#
# CONFIG_PCI_SYSCALL is not set
# CONFIG_ARCH_SUPPORTS_MSI is not set
# CONFIG_PCCARD is not set

#
# Kernel Features
#
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
CONFIG_VMSPLIT_3G=y
# CONFIG_VMSPLIT_2G is not set
# CONFIG_VMSPLIT_1G is not set
CONFIG_PAGE_OFFSET=0xC0000000
# CONFIG_PREEMPT is not set
CONFIG_HZ=128
CONFIG_AEABI=y
CONFIG_OABI_COMPAT=y
CONFIG_ARCH_FLATMEM_HAS_HOLES=y
# CONFIG_ARCH_SPARSEMEM_DEFAULT is not set
# CONFIG_ARCH_SELECT_MEMORY_MODEL is not set
CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_FLATMEM_MANUAL=y
# CONFIG_DISCONTIGMEM_MANUAL is not set
# CONFIG_SPARSEMEM_MANUAL is not set
CONFIG_FLATMEM=y
CONFIG_FLAT_NODE_MEM_MAP=y
CONFIG_PAGEFLAGS_EXTENDED=y
CONFIG_SPLIT_PTLOCK_CPUS=4
# CONFIG_PHYS_ADDR_T_64BIT is not set
CONFIG_ZONE_DMA_FLAG=0
CONFIG_VIRT_TO_BUS=y
CONFIG_UNEVICTABLE_LRU=y
# CONFIG_LEDS is not set
CONFIG_ALIGNMENT_TRAP=y

#
# Boot options
#
CONFIG_ZBOOT_ROM_TEXT=0x0
CONFIG_ZBOOT_ROM_BSS=0x0
CONFIG_CMDLINE="root=/dev/nfs nfsroot=192.168.0.1:/home/user/buildroot ip=192.168.0.2:192.168.0.1:192.168.0.1:255.255.255.0:tgt:eth0:off rw console=ttyS2,115200n8"
# CONFIG_XIP_KERNEL is not set
# CONFIG_KEXEC is not set

#
# CPU Power Management
#
# CONFIG_CPU_FREQ is not set
# CONFIG_CPU_IDLE is not set

#
# Floating point emulation
#

#
# At least one emulation must be selected
#
CONFIG_FPE_NWFPE=y
# CONFIG_FPE_NWFPE_XP is not set
# CONFIG_FPE_FASTFPE is not set
CONFIG_VFP=y
CONFIG_VFPv3=y
# CONFIG_NEON is not set

#
# Userspace binary formats
#
CONFIG_BINFMT_ELF=y
# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
CONFIG_HAVE_AOUT=y
# CONFIG_BINFMT_AOUT is not set
CONFIG_BINFMT_MISC=y

#
# Power management options
#
CONFIG_PM=y
# CONFIG_PM_DEBUG is not set
CONFIG_PM_SLEEP=y
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
# CONFIG_APM_EMULATION is not set
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_NET=y

#
# Networking options
#
CONFIG_COMPAT_NET_DEV_OPS=y
CONFIG_PACKET=y
# CONFIG_PACKET_MMAP is not set
CONFIG_UNIX=y
CONFIG_XFRM=y
# CONFIG_XFRM_USER is not set
# CONFIG_XFRM_SUB_POLICY is not set
# CONFIG_XFRM_MIGRATE is not set
# CONFIG_XFRM_STATISTICS is not set
CONFIG_NET_KEY=y
# CONFIG_NET_KEY_MIGRATE is not set
CONFIG_INET=y
# CONFIG_IP_MULTICAST is not set
# CONFIG_IP_ADVANCED_ROUTER is not set
CONFIG_IP_FIB_HASH=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=y
CONFIG_IP_PNP_RARP=y
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE is not set
# CONFIG_ARPD is not set
# CONFIG_SYN_COOKIES is not set
# CONFIG_INET_AH is not set
# CONFIG_INET_ESP is not set
# CONFIG_INET_IPCOMP is not set
# CONFIG_INET_XFRM_TUNNEL is not set
# CONFIG_INET_TUNNEL is not set
CONFIG_INET_XFRM_MODE_TRANSPORT=y
CONFIG_INET_XFRM_MODE_TUNNEL=y
CONFIG_INET_XFRM_MODE_BEET=y
# CONFIG_INET_LRO is not set
CONFIG_INET_DIAG=y
CONFIG_INET_TCP_DIAG=y
# CONFIG_TCP_CONG_ADVANCED is not set
CONFIG_TCP_CONG_CUBIC=y
CONFIG_DEFAULT_TCP_CONG="cubic"
# CONFIG_TCP_MD5SIG is not set
# CONFIG_IPV6 is not set
# CONFIG_NETWORK_SECMARK is not set
# CONFIG_NETFILTER is not set
# CONFIG_IP_DCCP is not set
# CONFIG_IP_SCTP is not set
# CONFIG_TIPC is not set
# CONFIG_ATM is not set
# CONFIG_BRIDGE is not set
# CONFIG_NET_DSA is not set
# CONFIG_VLAN_8021Q is not set
# CONFIG_DECNET is not set
# CONFIG_LLC2 is not set
# CONFIG_IPX is not set
# CONFIG_ATALK is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_ECONET is not set
# CONFIG_WAN_ROUTER is not set
# CONFIG_NET_SCHED is not set
# CONFIG_DCB is not set

#
# Network testing
#
# CONFIG_NET_PKTGEN is not set
# CONFIG_HAMRADIO is not set
# CONFIG_CAN is not set
# CONFIG_IRDA is not set
# CONFIG_BT is not set
# CONFIG_AF_RXRPC is not set
# CONFIG_PHONET is not set
CONFIG_WIRELESS=y
# CONFIG_CFG80211 is not set
CONFIG_WIRELESS_OLD_REGULATORY=y
# CONFIG_WIRELESS_EXT is not set
# CONFIG_LIB80211 is not set
# CONFIG_MAC80211 is not set
# CONFIG_WIMAX is not set
# CONFIG_RFKILL is not set
# CONFIG_NET_9P is not set

#
# Device Drivers
#

#
# Generic Driver Options
#
CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
# CONFIG_FW_LOADER is not set
# CONFIG_DEBUG_DRIVER is not set
# CONFIG_DEBUG_DEVRES is not set
# CONFIG_SYS_HYPERVISOR is not set
# CONFIG_CONNECTOR is not set
CONFIG_MTD=y
# CONFIG_MTD_DEBUG is not set
CONFIG_MTD_CONCAT=y
CONFIG_MTD_PARTITIONS=y
# CONFIG_MTD_TESTS is not set
# CONFIG_MTD_REDBOOT_PARTS is not set
CONFIG_MTD_CMDLINE_PARTS=y
# CONFIG_MTD_AFS_PARTS is not set
# CONFIG_MTD_AR7_PARTS is not set

#
# User Modules And Translation Layers
#
CONFIG_MTD_CHAR=y
CONFIG_MTD_BLKDEVS=y
CONFIG_MTD_BLOCK=y
# CONFIG_FTL is not set
# CONFIG_NFTL is not set
# CONFIG_INFTL is not set
# CONFIG_RFD_FTL is not set
# CONFIG_SSFDC is not set
# CONFIG_MTD_OOPS is not set

#
# RAM/ROM/Flash chip drivers
#
CONFIG_MTD_CFI=y
# CONFIG_MTD_JEDECPROBE is not set
CONFIG_MTD_GEN_PROBE=y
# CONFIG_MTD_CFI_ADV_OPTIONS is not set
CONFIG_MTD_MAP_BANK_WIDTH_1=y
CONFIG_MTD_MAP_BANK_WIDTH_2=y
CONFIG_MTD_MAP_BANK_WIDTH_4=y
# CONFIG_MTD_MAP_BANK_WIDTH_8 is not set
# CONFIG_MTD_MAP_BANK_WIDTH_16 is not set
# CONFIG_MTD_MAP_BANK_WIDTH_32 is not set
CONFIG_MTD_CFI_I1=y
CONFIG_MTD_CFI_I2=y
# CONFIG_MTD_CFI_I4 is not set
# CONFIG_MTD_CFI_I8 is not set
CONFIG_MTD_CFI_INTELEXT=y
# CONFIG_MTD_CFI_AMDSTD is not set
# CONFIG_MTD_CFI_STAA is not set
CONFIG_MTD_CFI_UTIL=y
# CONFIG_MTD_RAM is not set
# CONFIG_MTD_ROM is not set
# CONFIG_MTD_ABSENT is not set

#
# Mapping drivers for chip access
#
# CONFIG_MTD_COMPLEX_MAPPINGS is not set
# CONFIG_MTD_PHYSMAP is not set
# CONFIG_MTD_ARM_INTEGRATOR is not set
CONFIG_MTD_OMAP_NOR=y
# CONFIG_MTD_PLATRAM is not set

#
# Self-contained MTD device drivers
#
# CONFIG_MTD_DATAFLASH is not set
# CONFIG_MTD_M25P80 is not set
# CONFIG_MTD_SLRAM is not set
# CONFIG_MTD_PHRAM is not set
# CONFIG_MTD_MTDRAM is not set
# CONFIG_MTD_BLOCK2MTD is not set

#
# Disk-On-Chip Device Drivers
#
# CONFIG_MTD_DOC2000 is not set
# CONFIG_MTD_DOC2001 is not set
# CONFIG_MTD_DOC2001PLUS is not set
CONFIG_MTD_NAND=y
# CONFIG_MTD_NAND_VERIFY_WRITE is not set
CONFIG_MTD_NAND_ECC_SMC=y
# CONFIG_MTD_NAND_MUSEUM_IDS is not set
# CONFIG_MTD_NAND_GPIO is not set
CONFIG_MTD_NAND_OMAP2=y
CONFIG_MTD_NAND_IDS=y
# CONFIG_MTD_NAND_DISKONCHIP is not set
# CONFIG_MTD_NAND_NANDSIM is not set
# CONFIG_MTD_NAND_PLATFORM is not set
# CONFIG_MTD_ALAUDA is not set
CONFIG_MTD_ONENAND=y
CONFIG_MTD_ONENAND_VERIFY_WRITE=y
# CONFIG_MTD_ONENAND_GENERIC is not set
CONFIG_MTD_ONENAND_OMAP2=y
# CONFIG_MTD_ONENAND_OTP is not set
# CONFIG_MTD_ONENAND_2X_PROGRAM is not set
# CONFIG_MTD_ONENAND_SIM is not set

#
# LPDDR flash memory drivers
#
# CONFIG_MTD_LPDDR is not set

#
# UBI - Unsorted block images
#
# CONFIG_MTD_UBI is not set
# CONFIG_PARPORT is not set
CONFIG_BLK_DEV=y
# CONFIG_BLK_DEV_COW_COMMON is not set
CONFIG_BLK_DEV_LOOP=y
# CONFIG_BLK_DEV_CRYPTOLOOP is not set
# CONFIG_BLK_DEV_NBD is not set
# CONFIG_BLK_DEV_UB is not set
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=16
CONFIG_BLK_DEV_RAM_SIZE=16384
# CONFIG_BLK_DEV_XIP is not set
# CONFIG_CDROM_PKTCDVD is not set
# CONFIG_ATA_OVER_ETH is not set
CONFIG_MISC_DEVICES=y
CONFIG_MISC_DUMMY=m
# CONFIG_ICS932S401 is not set
# CONFIG_OMAP_STI is not set
# CONFIG_ENCLOSURE_SERVICES is not set
# CONFIG_C2PORT is not set

#
# EEPROM support
#
# CONFIG_EEPROM_AT24 is not set
# CONFIG_EEPROM_AT25 is not set
# CONFIG_EEPROM_LEGACY is not set
# CONFIG_EEPROM_93CX6 is not set
CONFIG_HAVE_IDE=y
# CONFIG_IDE is not set

#
# SCSI device support
#
# CONFIG_RAID_ATTRS is not set
CONFIG_SCSI=y
CONFIG_SCSI_DMA=y
# CONFIG_SCSI_TGT is not set
# CONFIG_SCSI_NETLINK is not set
CONFIG_SCSI_PROC_FS=y

#
# SCSI support type (disk, tape, CD-ROM)
#
CONFIG_BLK_DEV_SD=y
# CONFIG_CHR_DEV_ST is not set
# CONFIG_CHR_DEV_OSST is not set
# CONFIG_BLK_DEV_SR is not set
# CONFIG_CHR_DEV_SG is not set
# CONFIG_CHR_DEV_SCH is not set

#
# Some SCSI devices (e.g. CD jukebox) support multiple LUNs
#
# CONFIG_SCSI_MULTI_LUN is not set
# CONFIG_SCSI_CONSTANTS is not set
# CONFIG_SCSI_LOGGING is not set
# CONFIG_SCSI_SCAN_ASYNC is not set
CONFIG_SCSI_WAIT_SCAN=m

#
# SCSI Transports
#
# CONFIG_SCSI_SPI_ATTRS is not set
# CONFIG_SCSI_FC_ATTRS is not set
# CONFIG_SCSI_ISCSI_ATTRS is not set
# CONFIG_SCSI_SAS_LIBSAS is not set
# CONFIG_SCSI_SRP_ATTRS is not set
CONFIG_SCSI_LOWLEVEL=y
# CONFIG_ISCSI_TCP is not set
# CONFIG_LIBFC is not set
# CONFIG_SCSI_DEBUG is not set
# CONFIG_SCSI_DH is not set
# CONFIG_ATA is not set
# CONFIG_MD is not set
CONFIG_NETDEVICES=y
# CONFIG_DUMMY is not set
# CONFIG_BONDING is not set
# CONFIG_MACVLAN is not set
# CONFIG_EQUALIZER is not set
# CONFIG_TUN is not set
# CONFIG_VETH is not set
# CONFIG_PHYLIB is not set
CONFIG_NET_ETHERNET=y
CONFIG_MII=y
# CONFIG_AX88796 is not set
CONFIG_SMC91X=y
# CONFIG_DM9000 is not set
# CONFIG_ENC28J60 is not set
# CONFIG_SMC911X is not set
# CONFIG_SMSC911X is not set
# CONFIG_IBM_NEW_EMAC_ZMII is not set
# CONFIG_IBM_NEW_EMAC_RGMII is not set
# CONFIG_IBM_NEW_EMAC_TAH is not set
# CONFIG_IBM_NEW_EMAC_EMAC4 is not set
# CONFIG_IBM_NEW_EMAC_NO_FLOW_CTRL is not set
# CONFIG_IBM_NEW_EMAC_MAL_CLR_ICINTSTAT is not set
# CONFIG_IBM_NEW_EMAC_MAL_COMMON_ERR is not set
# CONFIG_B44 is not set
CONFIG_NETDEV_1000=y
CONFIG_NETDEV_10000=y

#
# Wireless LAN
#
# CONFIG_WLAN_PRE80211 is not set
# CONFIG_WLAN_80211 is not set
# CONFIG_IWLWIFI_LEDS is not set

#
# Enable WiMAX (Networking options) to see the WiMAX drivers
#

#
# USB Network Adapters
#
# CONFIG_USB_CATC is not set
# CONFIG_USB_KAWETH is not set
# CONFIG_USB_PEGASUS is not set
# CONFIG_USB_RTL8150 is not set
# CONFIG_USB_USBNET is not set
# CONFIG_WAN is not set
# CONFIG_PPP is not set
# CONFIG_SLIP is not set
# CONFIG_NETCONSOLE is not set
# CONFIG_NETPOLL is not set
# CONFIG_NET_POLL_CONTROLLER is not set
# CONFIG_ISDN is not set

#
# Input device support
#
CONFIG_INPUT=y
# CONFIG_INPUT_FF_MEMLESS is not set
# CONFIG_INPUT_POLLDEV is not set

#
# Userland interfaces
#
# CONFIG_INPUT_MOUSEDEV is not set
# CONFIG_INPUT_JOYDEV is not set
CONFIG_INPUT_EVDEV=y
# CONFIG_INPUT_EVBUG is not set

#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
# CONFIG_KEYBOARD_ATKBD is not set
# CONFIG_KEYBOARD_SUNKBD is not set
# CONFIG_KEYBOARD_LKKBD is not set
# CONFIG_KEYBOARD_XTKBD is not set
# CONFIG_KEYBOARD_NEWTON is not set
# CONFIG_KEYBOARD_STOWAWAY is not set
CONFIG_KEYBOARD_TWL4030=y
# CONFIG_KEYBOARD_GPIO is not set
# CONFIG_INPUT_MOUSE is not set
# CONFIG_INPUT_JOYSTICK is not set
# CONFIG_INPUT_TABLET is not set
CONFIG_INPUT_TOUCHSCREEN=y
CONFIG_TOUCHSCREEN_ADS7846=y
# CONFIG_TOUCHSCREEN_FUJITSU is not set
# CONFIG_TOUCHSCREEN_GUNZE is not set
# CONFIG_TOUCHSCREEN_ELO is not set
# CONFIG_TOUCHSCREEN_WACOM_W8001 is not set
# CONFIG_TOUCHSCREEN_MTOUCH is not set
# CONFIG_TOUCHSCREEN_INEXIO is not set
# CONFIG_TOUCHSCREEN_MK712 is not set
# CONFIG_TOUCHSCREEN_PENMOUNT is not set
# CONFIG_TOUCHSCREEN_TOUCHRIGHT is not set
# CONFIG_TOUCHSCREEN_TOUCHWIN is not set
# CONFIG_TOUCHSCREEN_TSC2005 is not set
# CONFIG_TOUCHSCREEN_TSC210X is not set
# CONFIG_TOUCHSCREEN_USB_COMPOSITE is not set
# CONFIG_TOUCHSCREEN_TOUCHIT213 is not set
# CONFIG_TOUCHSCREEN_TSC2007 is not set
# CONFIG_INPUT_MISC is not set

#
# Hardware I/O ports
#
# CONFIG_SERIO is not set
# CONFIG_GAMEPORT is not set

#
# Character devices
#
CONFIG_VT=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_VT_CONSOLE=y
CONFIG_HW_CONSOLE=y
# CONFIG_VT_HW_CONSOLE_BINDING is not set
CONFIG_DEVKMEM=y
# CONFIG_SERIAL_NONSTANDARD is not set

#
# Serial drivers
#
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_NR_UARTS=32
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
CONFIG_SERIAL_8250_EXTENDED=y
CONFIG_SERIAL_8250_MANY_PORTS=y
CONFIG_SERIAL_8250_SHARE_IRQ=y
CONFIG_SERIAL_8250_DETECT_IRQ=y
CONFIG_SERIAL_8250_RSA=y

#
# Non-8250 serial port support
#
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
CONFIG_UNIX98_PTYS=y
# CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
# CONFIG_LEGACY_PTYS is not set
# CONFIG_IPMI_HANDLER is not set
CONFIG_HW_RANDOM=y
# CONFIG_R3964 is not set
# CONFIG_RAW_DRIVER is not set
# CONFIG_TCG_TPM is not set
CONFIG_I2C=y
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_CHARDEV=y
CONFIG_I2C_HELPER_AUTO=y

#
# I2C Hardware Bus support
#

#
# I2C system bus drivers (mostly embedded / system-on-chip)
#
# CONFIG_I2C_GPIO is not set
# CONFIG_I2C_OCORES is not set
CONFIG_I2C_OMAP=y
# CONFIG_I2C_SIMTEC is not set

#
# External I2C/SMBus adapter drivers
#
# CONFIG_I2C_PARPORT_LIGHT is not set
# CONFIG_I2C_TAOS_EVM is not set
# CONFIG_I2C_TINY_USB is not set

#
# Other I2C/SMBus bus drivers
#
# CONFIG_I2C_PCA_PLATFORM is not set
# CONFIG_I2C_STUB is not set

#
# Miscellaneous I2C Chip support
#
# CONFIG_DS1682 is not set
# CONFIG_SENSORS_PCF8574 is not set
# CONFIG_PCF8575 is not set
# CONFIG_SENSORS_PCA9539 is not set
# CONFIG_SENSORS_PCF8591 is not set
# CONFIG_TWL4030_MADC is not set
# CONFIG_TWL4030_POWEROFF is not set
# CONFIG_SENSORS_MAX6875 is not set
# CONFIG_SENSORS_TSL2550 is not set
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_DEBUG_ALGO is not set
# CONFIG_I2C_DEBUG_BUS is not set
# CONFIG_I2C_DEBUG_CHIP is not set
CONFIG_SPI=y
# CONFIG_SPI_DEBUG is not set
CONFIG_SPI_MASTER=y

#
# SPI Master Controller Drivers
#
# CONFIG_SPI_BITBANG is not set
# CONFIG_SPI_GPIO is not set
CONFIG_SPI_OMAP24XX=y

#
# SPI Protocol Masters
#
# CONFIG_SPI_TSC210X is not set
# CONFIG_SPI_TSC2301 is not set
# CONFIG_SPI_SPIDEV is not set
# CONFIG_SPI_TLE62X0 is not set
CONFIG_ARCH_REQUIRE_GPIOLIB=y
CONFIG_GPIOLIB=y
# CONFIG_DEBUG_GPIO is not set
# CONFIG_GPIO_SYSFS is not set

#
# Memory mapped GPIO expanders:
#

#
# I2C GPIO expanders:
#
# CONFIG_GPIO_MAX732X is not set
# CONFIG_GPIO_PCA953X is not set
# CONFIG_GPIO_PCF857X is not set
CONFIG_GPIO_TWL4030=y

#
# PCI GPIO expanders:
#

#
# SPI GPIO expanders:
#
# CONFIG_GPIO_MAX7301 is not set
# CONFIG_GPIO_MCP23S08 is not set
# CONFIG_W1 is not set
# CONFIG_POWER_SUPPLY is not set
# CONFIG_HWMON is not set
# CONFIG_THERMAL is not set
# CONFIG_THERMAL_HWMON is not set
CONFIG_WATCHDOG=y
CONFIG_WATCHDOG_NOWAYOUT=y

#
# Watchdog Device Drivers
#
# CONFIG_SOFT_WATCHDOG is not set
CONFIG_OMAP_WATCHDOG=y

#
# USB-based Watchdog Cards
#
# CONFIG_USBPCWATCHDOG is not set
CONFIG_SSB_POSSIBLE=y

#
# Sonics Silicon Backplane
#
# CONFIG_SSB is not set

#
# Multifunction device drivers
#
# CONFIG_MFD_CORE is not set
# CONFIG_MFD_SM501 is not set
# CONFIG_MFD_ASIC3 is not set
# CONFIG_HTC_EGPIO is not set
# CONFIG_HTC_PASIC3 is not set
# CONFIG_TPS65010 is not set
CONFIG_TWL4030_CORE=y
# CONFIG_TWL4030_POWER is not set
# CONFIG_MFD_TMIO is not set
# CONFIG_MFD_T7L66XB is not set
# CONFIG_MFD_TC6387XB is not set
# CONFIG_MFD_TC6393XB is not set
# CONFIG_PMIC_DA903X is not set
# CONFIG_MFD_WM8400 is not set
# CONFIG_MFD_WM8350_I2C is not set
# CONFIG_MFD_PCF50633 is not set

#
# Multimedia devices
#

#
# Multimedia core support
#
# CONFIG_VIDEO_DEV is not set
# CONFIG_DVB_CORE is not set
# CONFIG_VIDEO_MEDIA is not set

#
# Multimedia drivers
#
CONFIG_DAB=y
# CONFIG_USB_DABUSB is not set

#
# Graphics support
#
# CONFIG_VGASTATE is not set
CONFIG_VIDEO_OUTPUT_CONTROL=m
CONFIG_FB=y
# CONFIG_FIRMWARE_EDID is not set
# CONFIG_FB_DDC is not set
# CONFIG_FB_BOOT_VESA_SUPPORT is not set
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_IMAGEBLIT=y
# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
# CONFIG_FB_SYS_FILLRECT is not set
# CONFIG_FB_SYS_COPYAREA is not set
# CONFIG_FB_SYS_IMAGEBLIT is not set
# CONFIG_FB_FOREIGN_ENDIAN is not set
# CONFIG_FB_SYS_FOPS is not set
# CONFIG_FB_SVGALIB is not set
# CONFIG_FB_MACMODES is not set
# CONFIG_FB_BACKLIGHT is not set
# CONFIG_FB_MODE_HELPERS is not set
# CONFIG_FB_TILEBLITTING is not set

#
# Frame buffer hardware drivers
#
# CONFIG_FB_S1D13XXX is not set
# CONFIG_FB_VIRTUAL is not set
# CONFIG_FB_METRONOME is not set
# CONFIG_FB_MB862XX is not set
CONFIG_FB_OMAP=y
# CONFIG_FB_OMAP_LCD_VGA is not set
# CONFIG_FB_OMAP_LCDC_EXTERNAL is not set
# CONFIG_FB_OMAP_BOOTLOADER_INIT is not set
CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE=14
# CONFIG_BACKLIGHT_LCD_SUPPORT is not set

#
# Display device support
#
# CONFIG_DISPLAY_SUPPORT is not set

#
# Console display driver support
#
# CONFIG_VGA_CONSOLE is not set
CONFIG_DUMMY_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE=y
# CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY is not set
# CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set
# CONFIG_FONTS is not set
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
CONFIG_LOGO=y
CONFIG_LOGO_LINUX_MONO=y
CONFIG_LOGO_LINUX_VGA16=y
CONFIG_LOGO_LINUX_CLUT224=y
# CONFIG_SOUND is not set
CONFIG_HID_SUPPORT=y
CONFIG_HID=y
# CONFIG_HID_DEBUG is not set
# CONFIG_HIDRAW is not set

#
# USB Input Devices
#
CONFIG_USB_HID=y
# CONFIG_HID_PID is not set
# CONFIG_USB_HIDDEV is not set

#
# Special HID drivers
#
CONFIG_HID_COMPAT=y
# CONFIG_HID_A4TECH is not set
# CONFIG_HID_APPLE is not set
# CONFIG_HID_BELKIN is not set
# CONFIG_HID_CHERRY is not set
# CONFIG_HID_CHICONY is not set
# CONFIG_HID_CYPRESS is not set
# CONFIG_HID_EZKEY is not set
# CONFIG_HID_GYRATION is not set
# CONFIG_HID_LOGITECH is not set
# CONFIG_HID_MICROSOFT is not set
# CONFIG_HID_MONTEREY is not set
# CONFIG_HID_NTRIG is not set
# CONFIG_HID_PANTHERLORD is not set
# CONFIG_HID_PETALYNX is not set
# CONFIG_HID_SAMSUNG is not set
# CONFIG_HID_SONY is not set
# CONFIG_HID_SUNPLUS is not set
# CONFIG_GREENASIA_FF is not set
# CONFIG_HID_TOPSEED is not set
# CONFIG_THRUSTMASTER_FF is not set
# CONFIG_ZEROPLUS_FF is not set
CONFIG_USB_SUPPORT=y
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB_ARCH_HAS_OHCI=y
CONFIG_USB_ARCH_HAS_EHCI=y
CONFIG_USB=y
CONFIG_USB_DEBUG=y
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y

#
# Miscellaneous USB options
#
CONFIG_USB_DEVICEFS=y
# CONFIG_USB_DEVICE_CLASS is not set
# CONFIG_USB_DYNAMIC_MINORS is not set
CONFIG_USB_SUSPEND=y
CONFIG_USB_OTG=y
# CONFIG_USB_OTG_WHITELIST is not set
# CONFIG_USB_OTG_BLACKLIST_HUB is not set
CONFIG_USB_MON=y
# CONFIG_USB_WUSB is not set
# CONFIG_USB_WUSB_CBAF is not set

#
# USB Host Controller Drivers
#
# CONFIG_USB_C67X00_HCD is not set
CONFIG_USB_EHCI_HCD=m
CONFIG_OMAP_EHCI_PHY_MODE=y
# CONFIG_OMAP_EHCI_TLL_MODE is not set
# CONFIG_USB_EHCI_ROOT_HUB_TT is not set
# CONFIG_USB_EHCI_TT_NEWSCHED is not set
# CONFIG_USB_OXU210HP_HCD is not set
# CONFIG_USB_ISP116X_HCD is not set
# CONFIG_USB_OHCI_HCD is not set
# CONFIG_USB_SL811_HCD is not set
# CONFIG_USB_R8A66597_HCD is not set
# CONFIG_USB_HWA_HCD is not set
CONFIG_USB_MUSB_HDRC=y
CONFIG_USB_MUSB_SOC=y

#
# OMAP 343x high speed USB support
#
# CONFIG_USB_MUSB_HOST is not set
# CONFIG_USB_MUSB_PERIPHERAL is not set
CONFIG_USB_MUSB_OTG=y
CONFIG_USB_GADGET_MUSB_HDRC=y
CONFIG_USB_MUSB_HDRC_HCD=y
# CONFIG_MUSB_PIO_ONLY is not set
CONFIG_USB_INVENTRA_DMA=y
# CONFIG_USB_TI_CPPI_DMA is not set
# CONFIG_USB_MUSB_DEBUG is not set

#
# USB Device Class drivers
#
# CONFIG_USB_ACM is not set
# CONFIG_USB_PRINTER is not set
# CONFIG_USB_WDM is not set
# CONFIG_USB_TMC is not set

#
# NOTE: USB_STORAGE depends on SCSI but BLK_DEV_SD may also be needed;
#

#
# see USB_STORAGE Help for more information
#
CONFIG_USB_STORAGE=y
CONFIG_USB_STORAGE_DEBUG=y
# CONFIG_USB_STORAGE_DATAFAB is not set
# CONFIG_USB_STORAGE_FREECOM is not set
# CONFIG_USB_STORAGE_ISD200 is not set
# CONFIG_USB_STORAGE_USBAT is not set
# CONFIG_USB_STORAGE_SDDR09 is not set
# CONFIG_USB_STORAGE_SDDR55 is not set
# CONFIG_USB_STORAGE_JUMPSHOT is not set
# CONFIG_USB_STORAGE_ALAUDA is not set
# CONFIG_USB_STORAGE_ONETOUCH is not set
# CONFIG_USB_STORAGE_KARMA is not set
# CONFIG_USB_STORAGE_CYPRESS_ATACB is not set
# CONFIG_USB_LIBUSUAL is not set

#
# USB Imaging devices
#
# CONFIG_USB_MDC800 is not set
# CONFIG_USB_MICROTEK is not set

#
# USB port drivers
#
# CONFIG_USB_SERIAL is not set

#
# USB Miscellaneous drivers
#
# CONFIG_USB_EMI62 is not set
# CONFIG_USB_EMI26 is not set
# CONFIG_USB_ADUTUX is not set
# CONFIG_USB_SEVSEG is not set
# CONFIG_USB_RIO500 is not set
# CONFIG_USB_LEGOTOWER is not set
# CONFIG_USB_LCD is not set
# CONFIG_USB_BERRY_CHARGE is not set
# CONFIG_USB_LED is not set
# CONFIG_USB_CYPRESS_CY7C63 is not set
# CONFIG_USB_CYTHERM is not set
# CONFIG_USB_PHIDGET is not set
# CONFIG_USB_IDMOUSE is not set
# CONFIG_USB_FTDI_ELAN is not set
# CONFIG_USB_APPLEDISPLAY is not set
# CONFIG_USB_SISUSBVGA is not set
# CONFIG_USB_LD is not set
# CONFIG_USB_TRANCEVIBRATOR is not set
# CONFIG_USB_IOWARRIOR is not set
CONFIG_USB_TEST=y
# CONFIG_USB_ISIGHTFW is not set
# CONFIG_USB_VST is not set
CONFIG_USB_GADGET=y
CONFIG_USB_GADGET_DEBUG=y
CONFIG_USB_GADGET_DEBUG_FILES=y
CONFIG_USB_GADGET_VBUS_DRAW=2
CONFIG_USB_GADGET_SELECTED=y
# CONFIG_USB_GADGET_AT91 is not set
# CONFIG_USB_GADGET_ATMEL_USBA is not set
# CONFIG_USB_GADGET_FSL_USB2 is not set
# CONFIG_USB_GADGET_LH7A40X is not set
# CONFIG_USB_GADGET_OMAP is not set
# CONFIG_USB_GADGET_PXA25X is not set
# CONFIG_USB_GADGET_PXA27X is not set
# CONFIG_USB_GADGET_S3C2410 is not set
# CONFIG_USB_GADGET_IMX is not set
# CONFIG_USB_GADGET_M66592 is not set
# CONFIG_USB_GADGET_AMD5536UDC is not set
# CONFIG_USB_GADGET_FSL_QE is not set
# CONFIG_USB_GADGET_CI13XXX is not set
# CONFIG_USB_GADGET_NET2280 is not set
# CONFIG_USB_GADGET_GOKU is not set
# CONFIG_USB_GADGET_DUMMY_HCD is not set
CONFIG_USB_GADGET_DUALSPEED=y
CONFIG_USB_ZERO=m
# CONFIG_USB_ZERO_HNPTEST is not set
# CONFIG_USB_ETH is not set
# CONFIG_USB_GADGETFS is not set
# CONFIG_USB_FILE_STORAGE is not set
# CONFIG_USB_G_SERIAL is not set
# CONFIG_USB_MIDI_GADGET is not set
# CONFIG_USB_G_PRINTER is not set
# CONFIG_USB_CDC_COMPOSITE is not set

#
# OTG and related infrastructure
#
CONFIG_USB_OTG_UTILS=y
# CONFIG_USB_GPIO_VBUS is not set
# CONFIG_ISP1301_OMAP is not set
CONFIG_TWL4030_USB=y
CONFIG_MMC=y
# CONFIG_MMC_DEBUG is not set
# CONFIG_MMC_UNSAFE_RESUME is not set

#
# MMC/SD/SDIO Card Drivers
#
CONFIG_MMC_BLOCK=y
CONFIG_MMC_BLOCK_BOUNCE=y
# CONFIG_SDIO_UART is not set
# CONFIG_MMC_TEST is not set

#
# MMC/SD/SDIO Host Controller Drivers
#
# CONFIG_MMC_SDHCI is not set
CONFIG_MMC_OMAP_HS=m
# CONFIG_MMC_SPI is not set
# CONFIG_MEMSTICK is not set
# CONFIG_ACCESSIBILITY is not set
# CONFIG_NEW_LEDS is not set
CONFIG_RTC_LIB=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_HCTOSYS=y
CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
# CONFIG_RTC_DEBUG is not set

#
# RTC interfaces
#
CONFIG_RTC_INTF_SYSFS=y
CONFIG_RTC_INTF_PROC=y
CONFIG_RTC_INTF_DEV=y
# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
# CONFIG_RTC_DRV_TEST is not set

#
# I2C RTC drivers
#
# CONFIG_RTC_DRV_DS1307 is not set
# CONFIG_RTC_DRV_DS1374 is not set
# CONFIG_RTC_DRV_DS1672 is not set
# CONFIG_RTC_DRV_MAX6900 is not set
# CONFIG_RTC_DRV_RS5C372 is not set
# CONFIG_RTC_DRV_ISL1208 is not set
# CONFIG_RTC_DRV_X1205 is not set
# CONFIG_RTC_DRV_PCF8563 is not set
# CONFIG_RTC_DRV_PCF8583 is not set
# CONFIG_RTC_DRV_M41T80 is not set
CONFIG_RTC_DRV_TWL4030=y
# CONFIG_RTC_DRV_S35390A is not set
# CONFIG_RTC_DRV_FM3130 is not set
# CONFIG_RTC_DRV_RX8581 is not set

#
# SPI RTC drivers
#
# CONFIG_RTC_DRV_M41T94 is not set
# CONFIG_RTC_DRV_DS1305 is not set
# CONFIG_RTC_DRV_DS1390 is not set
# CONFIG_RTC_DRV_MAX6902 is not set
# CONFIG_RTC_DRV_R9701 is not set
# CONFIG_RTC_DRV_RS5C348 is not set
# CONFIG_RTC_DRV_DS3234 is not set

#
# Platform RTC drivers
#
# CONFIG_RTC_DRV_CMOS is not set
# CONFIG_RTC_DRV_DS1286 is not set
# CONFIG_RTC_DRV_DS1511 is not set
# CONFIG_RTC_DRV_DS1553 is not set
# CONFIG_RTC_DRV_DS1742 is not set
# CONFIG_RTC_DRV_STK17TA8 is not set
# CONFIG_RTC_DRV_M48T86 is not set
# CONFIG_RTC_DRV_M48T35 is not set
# CONFIG_RTC_DRV_M48T59 is not set
# CONFIG_RTC_DRV_BQ4802 is not set
# CONFIG_RTC_DRV_V3020 is not set

#
# on-CPU RTC drivers
#
# CONFIG_DMADEVICES is not set
# CONFIG_REGULATOR is not set
# CONFIG_UIO is not set
# CONFIG_STAGING is not set

#
# CBUS support
#
# CONFIG_CBUS is not set

#
# File systems
#
CONFIG_EXT2_FS=y
# CONFIG_EXT2_FS_XATTR is not set
# CONFIG_EXT2_FS_XIP is not set
CONFIG_EXT3_FS=y
# CONFIG_EXT3_FS_XATTR is not set
# CONFIG_EXT4_FS is not set
CONFIG_JBD=y
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
# CONFIG_FS_POSIX_ACL is not set
CONFIG_FILE_LOCKING=y
# CONFIG_XFS_FS is not set
# CONFIG_OCFS2_FS is not set
# CONFIG_BTRFS_FS is not set
CONFIG_DNOTIFY=y
CONFIG_INOTIFY=y
CONFIG_INOTIFY_USER=y
CONFIG_QUOTA=y
# CONFIG_QUOTA_NETLINK_INTERFACE is not set
CONFIG_PRINT_QUOTA_WARNING=y
CONFIG_QUOTA_TREE=y
# CONFIG_QFMT_V1 is not set
CONFIG_QFMT_V2=y
CONFIG_QUOTACTL=y
# CONFIG_AUTOFS_FS is not set
# CONFIG_AUTOFS4_FS is not set
# CONFIG_FUSE_FS is not set

#
# CD-ROM/DVD Filesystems
#
# CONFIG_ISO9660_FS is not set
# CONFIG_UDF_FS is not set

#
# DOS/FAT/NT Filesystems
#
CONFIG_FAT_FS=y
CONFIG_MSDOS_FS=y
CONFIG_VFAT_FS=y
CONFIG_FAT_DEFAULT_CODEPAGE=437
CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
# CONFIG_NTFS_FS is not set

#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_SYSCTL=y
CONFIG_PROC_PAGE_MONITOR=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
# CONFIG_TMPFS_POSIX_ACL is not set
# CONFIG_HUGETLB_PAGE is not set
# CONFIG_CONFIGFS_FS is not set
CONFIG_MISC_FILESYSTEMS=y
# CONFIG_ADFS_FS is not set
# CONFIG_AFFS_FS is not set
# CONFIG_HFS_FS is not set
# CONFIG_HFSPLUS_FS is not set
# CONFIG_BEFS_FS is not set
# CONFIG_BFS_FS is not set
# CONFIG_EFS_FS is not set
CONFIG_JFFS2_FS=y
CONFIG_JFFS2_FS_DEBUG=0
CONFIG_JFFS2_FS_WRITEBUFFER=y
# CONFIG_JFFS2_FS_WBUF_VERIFY is not set
# CONFIG_JFFS2_SUMMARY is not set
# CONFIG_JFFS2_FS_XATTR is not set
CONFIG_JFFS2_COMPRESSION_OPTIONS=y
CONFIG_JFFS2_ZLIB=y
# CONFIG_JFFS2_LZO is not set
CONFIG_JFFS2_RTIME=y
# CONFIG_JFFS2_RUBIN is not set
# CONFIG_JFFS2_CMODE_NONE is not set
CONFIG_JFFS2_CMODE_PRIORITY=y
# CONFIG_JFFS2_CMODE_SIZE is not set
# CONFIG_JFFS2_CMODE_FAVOURLZO is not set
# CONFIG_CRAMFS is not set
# CONFIG_SQUASHFS is not set
# CONFIG_VXFS_FS is not set
# CONFIG_MINIX_FS is not set
# CONFIG_OMFS_FS is not set
# CONFIG_HPFS_FS is not set
# CONFIG_QNX4FS_FS is not set
# CONFIG_ROMFS_FS is not set
# CONFIG_SYSV_FS is not set
# CONFIG_UFS_FS is not set
CONFIG_NETWORK_FILESYSTEMS=y
CONFIG_NFS_FS=y
CONFIG_NFS_V3=y
# CONFIG_NFS_V3_ACL is not set
CONFIG_NFS_V4=y
CONFIG_ROOT_NFS=y
# CONFIG_NFSD is not set
CONFIG_LOCKD=y
CONFIG_LOCKD_V4=y
CONFIG_NFS_COMMON=y
CONFIG_SUNRPC=y
CONFIG_SUNRPC_GSS=y
# CONFIG_SUNRPC_REGISTER_V4 is not set
CONFIG_RPCSEC_GSS_KRB5=y
# CONFIG_RPCSEC_GSS_SPKM3 is not set
# CONFIG_SMB_FS is not set
# CONFIG_CIFS is not set
# CONFIG_NCP_FS is not set
# CONFIG_CODA_FS is not set
# CONFIG_AFS_FS is not set

#
# Partition Types
#
CONFIG_PARTITION_ADVANCED=y
# CONFIG_ACORN_PARTITION is not set
# CONFIG_OSF_PARTITION is not set
# CONFIG_AMIGA_PARTITION is not set
# CONFIG_ATARI_PARTITION is not set
# CONFIG_MAC_PARTITION is not set
CONFIG_MSDOS_PARTITION=y
# CONFIG_BSD_DISKLABEL is not set
# CONFIG_MINIX_SUBPARTITION is not set
# CONFIG_SOLARIS_X86_PARTITION is not set
# CONFIG_UNIXWARE_DISKLABEL is not set
# CONFIG_LDM_PARTITION is not set
# CONFIG_SGI_PARTITION is not set
# CONFIG_ULTRIX_PARTITION is not set
# CONFIG_SUN_PARTITION is not set
# CONFIG_KARMA_PARTITION is not set
# CONFIG_EFI_PARTITION is not set
# CONFIG_SYSV68_PARTITION is not set
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="iso8859-1"
CONFIG_NLS_CODEPAGE_437=y
# CONFIG_NLS_CODEPAGE_737 is not set
# CONFIG_NLS_CODEPAGE_775 is not set
# CONFIG_NLS_CODEPAGE_850 is not set
# CONFIG_NLS_CODEPAGE_852 is not set
# CONFIG_NLS_CODEPAGE_855 is not set
# CONFIG_NLS_CODEPAGE_857 is not set
# CONFIG_NLS_CODEPAGE_860 is not set
# CONFIG_NLS_CODEPAGE_861 is not set
# CONFIG_NLS_CODEPAGE_862 is not set
# CONFIG_NLS_CODEPAGE_863 is not set
# CONFIG_NLS_CODEPAGE_864 is not set
# CONFIG_NLS_CODEPAGE_865 is not set
# CONFIG_NLS_CODEPAGE_866 is not set
# CONFIG_NLS_CODEPAGE_869 is not set
# CONFIG_NLS_CODEPAGE_936 is not set
# CONFIG_NLS_CODEPAGE_950 is not set
# CONFIG_NLS_CODEPAGE_932 is not set
# CONFIG_NLS_CODEPAGE_949 is not set
# CONFIG_NLS_CODEPAGE_874 is not set
# CONFIG_NLS_ISO8859_8 is not set
# CONFIG_NLS_CODEPAGE_1250 is not set
# CONFIG_NLS_CODEPAGE_1251 is not set
# CONFIG_NLS_ASCII is not set
CONFIG_NLS_ISO8859_1=y
# CONFIG_NLS_ISO8859_2 is not set
# CONFIG_NLS_ISO8859_3 is not set
# CONFIG_NLS_ISO8859_4 is not set
# CONFIG_NLS_ISO8859_5 is not set
# CONFIG_NLS_ISO8859_6 is not set
# CONFIG_NLS_ISO8859_7 is not set
# CONFIG_NLS_ISO8859_9 is not set
# CONFIG_NLS_ISO8859_13 is not set
# CONFIG_NLS_ISO8859_14 is not set
# CONFIG_NLS_ISO8859_15 is not set
# CONFIG_NLS_KOI8_R is not set
# CONFIG_NLS_KOI8_U is not set
# CONFIG_NLS_UTF8 is not set
# CONFIG_DLM is not set

#
# Kernel hacking
#
# CONFIG_PRINTK_TIME is not set
CONFIG_ENABLE_WARN_DEPRECATED=y
CONFIG_ENABLE_MUST_CHECK=y
CONFIG_FRAME_WARN=1024
CONFIG_MAGIC_SYSRQ=y
# CONFIG_UNUSED_SYMBOLS is not set
# CONFIG_DEBUG_FS is not set
# CONFIG_HEADERS_CHECK is not set
CONFIG_DEBUG_KERNEL=y
# CONFIG_DEBUG_SHIRQ is not set
CONFIG_DETECT_SOFTLOCKUP=y
# CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set
CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=0
CONFIG_SCHED_DEBUG=y
# CONFIG_SCHEDSTATS is not set
# CONFIG_TIMER_STATS is not set
# CONFIG_DEBUG_OBJECTS is not set
CONFIG_DEBUG_SLAB=y
# CONFIG_DEBUG_SLAB_LEAK is not set
# CONFIG_DEBUG_RT_MUTEXES is not set
# CONFIG_RT_MUTEX_TESTER is not set
# CONFIG_DEBUG_SPINLOCK is not set
CONFIG_DEBUG_MUTEXES=y
# CONFIG_DEBUG_LOCK_ALLOC is not set
# CONFIG_PROVE_LOCKING is not set
# CONFIG_LOCK_STAT is not set
# CONFIG_DEBUG_SPINLOCK_SLEEP is not set
# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
# CONFIG_DEBUG_KOBJECT is not set
CONFIG_DEBUG_BUGVERBOSE=y
CONFIG_DEBUG_INFO=y
# CONFIG_DEBUG_VM is not set
# CONFIG_DEBUG_WRITECOUNT is not set
# CONFIG_DEBUG_MEMORY_INIT is not set
# CONFIG_DEBUG_LIST is not set
# CONFIG_DEBUG_SG is not set
# CONFIG_DEBUG_NOTIFIERS is not set
CONFIG_FRAME_POINTER=y
# CONFIG_BOOT_PRINTK_DELAY is not set
# CONFIG_RCU_TORTURE_TEST is not set
# CONFIG_RCU_CPU_STALL_DETECTOR is not set
# CONFIG_BACKTRACE_SELF_TEST is not set
# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
# CONFIG_FAULT_INJECTION is not set
# CONFIG_LATENCYTOP is not set
CONFIG_HAVE_FUNCTION_TRACER=y

#
# Tracers
#
# CONFIG_FUNCTION_TRACER is not set
# CONFIG_IRQSOFF_TRACER is not set
# CONFIG_SCHED_TRACER is not set
# CONFIG_CONTEXT_SWITCH_TRACER is not set
# CONFIG_BOOT_TRACER is not set
# CONFIG_TRACE_BRANCH_PROFILING is not set
# CONFIG_STACK_TRACER is not set
# CONFIG_DYNAMIC_PRINTK_DEBUG is not set
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
# CONFIG_KGDB is not set
CONFIG_DEBUG_USER=y
CONFIG_DEBUG_ERRORS=y
# CONFIG_DEBUG_STACK_USAGE is not set
CONFIG_DEBUG_LL=y
# CONFIG_DEBUG_ICEDCC is not set

#
# Security options
#
# CONFIG_KEYS is not set
# CONFIG_SECURITY is not set
# CONFIG_SECURITYFS is not set
# CONFIG_SECURITY_FILE_CAPABILITIES is not set
CONFIG_CRYPTO=y

#
# Crypto core or helper
#
# CONFIG_CRYPTO_FIPS is not set
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_ALGAPI2=y
CONFIG_CRYPTO_AEAD2=y
CONFIG_CRYPTO_BLKCIPHER=y
CONFIG_CRYPTO_BLKCIPHER2=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_HASH2=y
CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_MANAGER2=y
# CONFIG_CRYPTO_GF128MUL is not set
# CONFIG_CRYPTO_NULL is not set
# CONFIG_CRYPTO_CRYPTD is not set
# CONFIG_CRYPTO_AUTHENC is not set
# CONFIG_CRYPTO_TEST is not set

#
# Authenticated Encryption with Associated Data
#
# CONFIG_CRYPTO_CCM is not set
# CONFIG_CRYPTO_GCM is not set
# CONFIG_CRYPTO_SEQIV is not set

#
# Block modes
#
CONFIG_CRYPTO_CBC=y
# CONFIG_CRYPTO_CTR is not set
# CONFIG_CRYPTO_CTS is not set
CONFIG_CRYPTO_ECB=m
# CONFIG_CRYPTO_LRW is not set
CONFIG_CRYPTO_PCBC=m
# CONFIG_CRYPTO_XTS is not set

#
# Hash modes
#
# CONFIG_CRYPTO_HMAC is not set
# CONFIG_CRYPTO_XCBC is not set

#
# Digest
#
CONFIG_CRYPTO_CRC32C=y
# CONFIG_CRYPTO_MD4 is not set
CONFIG_CRYPTO_MD5=y
# CONFIG_CRYPTO_MICHAEL_MIC is not set
# CONFIG_CRYPTO_RMD128 is not set
# CONFIG_CRYPTO_RMD160 is not set
# CONFIG_CRYPTO_RMD256 is not set
# CONFIG_CRYPTO_RMD320 is not set
# CONFIG_CRYPTO_SHA1 is not set
# CONFIG_CRYPTO_SHA256 is not set
# CONFIG_CRYPTO_SHA512 is not set
# CONFIG_CRYPTO_TGR192 is not set
# CONFIG_CRYPTO_WP512 is not set

#
# Ciphers
#
# CONFIG_CRYPTO_AES is not set
# CONFIG_CRYPTO_ANUBIS is not set
# CONFIG_CRYPTO_ARC4 is not set
# CONFIG_CRYPTO_BLOWFISH is not set
# CONFIG_CRYPTO_CAMELLIA is not set
# CONFIG_CRYPTO_CAST5 is not set
# CONFIG_CRYPTO_CAST6 is not set
CONFIG_CRYPTO_DES=y
# CONFIG_CRYPTO_FCRYPT is not set
# CONFIG_CRYPTO_KHAZAD is not set
# CONFIG_CRYPTO_SALSA20 is not set
# CONFIG_CRYPTO_SEED is not set
# CONFIG_CRYPTO_SERPENT is not set
# CONFIG_CRYPTO_TEA is not set
# CONFIG_CRYPTO_TWOFISH is not set

#
# Compression
#
# CONFIG_CRYPTO_DEFLATE is not set
# CONFIG_CRYPTO_LZO is not set

#
# Random Number Generation
#
# CONFIG_CRYPTO_ANSI_CPRNG is not set
CONFIG_CRYPTO_HW=y

#
# Library routines
#
CONFIG_BITREVERSE=y
CONFIG_GENERIC_FIND_LAST_BIT=y
CONFIG_CRC_CCITT=y
# CONFIG_CRC16 is not set
# CONFIG_CRC_T10DIF is not set
# CONFIG_CRC_ITU_T is not set
CONFIG_CRC32=y
# CONFIG_CRC7 is not set
CONFIG_LIBCRC32C=y
CONFIG_ZLIB_INFLATE=y
CONFIG_ZLIB_DEFLATE=y
CONFIG_PLIST=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y
CONFIG_HAS_DMA=y

Re: dma_alloc_coherent bug?

[Ameya Palande]

I did some modification to kernel and dummy driver so that the dummy driver
will print memory zones after module_init and module_exit. As we can see from
the following output 4 MB zones are decreasing and when it reaches to zero
driver fails :(

[   84.669036] Normal: 50*4kB 45*8kB 41*16kB 36*32kB 29*64kB 6*128kB
16*256kB 19*512kB 19*1024kB 17*2048kB 3*4096kB = 85376kB
[   84.764038] alloc[0] - virt=0xFF60C000 phy=0x81000000 size=0x00400000
[   84.771484] alloc[1] - virt=0xFFA0C000 phy=0x817C2000 size=0x00001000
[   84.790435] alloc[2] - virt=0xFFA0D000 phy=0x81780000 size=0x00011800
[   84.809112] Normal: 47*4kB 41*8kB 42*16kB 35*32kB 29*64kB 5*128kB
18*256kB 18*512kB 19*1024kB 17*2048kB 2*4096kB = 81092kB
[   84.827819] free[0] - virt=0xff60c000 phy=0x81000000 size=0x00400000
[   84.850067] free[1] - virt=0xffa0c000 phy=0x817c2000 size=0x00001000
[   84.857330] free[2] - virt=0xffa0d000 phy=0x81780000 size=0x00011800
[   84.873138] Normal: 50*4kB 45*8kB 46*16kB 37*32kB 29*64kB 4*128kB
18*256kB 18*512kB 19*1024kB 17*2048kB 3*4096kB = 85232kB
[   84.965484] alloc[0] - virt=0xFF60C000 phy=0x81800000 size=0x00400000
[   84.972930] alloc[1] - virt=0xFFA0C000 phy=0x81782000 size=0x00001000
[   84.990722] alloc[2] - virt=0xFFA0D000 phy=0x813C0000 size=0x00011800
[   84.997894] Normal: 51*4kB 40*8kB 44*16kB 37*32kB 29*64kB 4*128kB
18*256kB 18*512kB 19*1024kB 17*2048kB 2*4096kB = 81068kB
[   85.025207] free[0] - virt=0xff60c000 phy=0x81800000 size=0x00400000
[   85.044769] free[1] - virt=0xffa0c000 phy=0x81782000 size=0x00001000
[   85.051727] free[2] - virt=0xffa0d000 phy=0x813c0000 size=0x00011800
[   85.058868] Normal: 70*4kB 44*8kB 46*16kB 40*32kB 28*64kB 5*128kB
19*256kB 19*512kB 20*1024kB 18*2048kB 2*4096kB = 85208kB
[   85.157135] alloc[0] - virt=0xFF60C000 phy=0x80C00000 size=0x00400000
[   85.174621] alloc[1] - virt=0xFFA0C000 phy=0x813C1000 size=0x00001000
[   85.181823] alloc[2] - virt=0xFFA0D000 phy=0x813E0000 size=0x00011800
[   85.188903] Normal: 55*4kB 40*8kB 46*16kB 41*32kB 30*64kB 3*128kB
19*256kB 19*512kB 20*1024kB 18*2048kB 1*4096kB = 80924kB
[   85.218841] free[0] - virt=0xff60c000 phy=0x80c00000 size=0x00400000
[   85.232147] free[1] - virt=0xffa0c000 phy=0x813c1000 size=0x00001000
[   85.245086] free[2] - virt=0xffa0d000 phy=0x813e0000 size=0x00011800
[   85.257049] Normal: 56*4kB 45*8kB 48*16kB 44*32kB 30*64kB 4*128kB
20*256kB 20*512kB 21*1024kB 19*2048kB 1*4096kB = 85064kB
[   85.348480] alloc[0] - virt=0xFF60C000 phy=0x80800000 size=0x00400000
[   85.368347] alloc[1] - virt=0xFFA0C000 phy=0x813E2000 size=0x00001000
[   85.376007] alloc[2] - virt=0xFFA0D000 phy=0x80FC0000 size=0x00011800
[   85.382812] Normal: 56*4kB 45*8kB 50*16kB 45*32kB 29*64kB 3*128kB
20*256kB 20*512kB 21*1024kB 19*2048kB 0*4096kB = 80840kB
[   85.416137] free[0] - virt=0xff60c000 phy=0x80800000 size=0x00400000
[   85.426055] free[1] - virt=0xffa0c000 phy=0x813e2000 size=0x00001000
[   85.438323] free[2] - virt=0xffa0d000 phy=0x80fc0000 size=0x00011800
[   85.448608] Normal: 56*4kB 50*8kB 52*16kB 46*32kB 33*64kB 3*128kB
21*256kB 21*512kB 22*1024kB 20*2048kB 0*4096kB = 85040kB
[   86.087249] insmod: page allocation failure. order:10, mode:0xd0
[   86.094543] [<c0030278>] (dump_stack+0x0/0x14) from [<c008bf04>]
(__alloc_pages_internal+0x384/0x39c)
[   86.112396] [<c008bb80>] (__alloc_pages_internal+0x0/0x39c) from
[<c00310d0>] (__dma_alloc+0x170/0x42c)
[   86.122253] [<c0030f60>] (__dma_alloc+0x0/0x42c) from [<c0031418>]
(dma_alloc_coherent+0x58/0x64)
[   86.219665] [<c00313c0>] (dma_alloc_coherent+0x0/0x64) from
[<bf396050>] (dummy_init+0x50/0x114 [dummy])
[   86.269866]  r7:bf393738 r6:00000000 r5:00000000 r4:bf393740
[   86.275634] [<bf396000>] (dummy_init+0x0/0x114 [dummy]) from
[<c002c314>] (do_one_initcall+0x64/0x198)
[   86.291198]  r7:00000000 r6:00012018 r5:bf393760 r4:c0363660
[   86.297119] [<c002c2b0>] (do_one_initcall+0x0/0x198) from
[<c007d784>] (sys_init_module+0x98/0x188)
[   86.312896] [<c007d6ec>] (sys_init_module+0x0/0x188) from
[<c002c920>] (ret_fast_syscall+0x0/0x2c)
[   86.334777]  r7:00000080 r6:00000000 r5:4001cbe0 r4:00000000
[   86.385375] Mem-info:
[   86.397857] Normal per-cpu:
[   86.429901] CPU    0: hi:   90, btch:  15 usd:  75
[   86.437927] Active_anon:7409 active_file:3578 inactive_anon:7431
[   86.437957]  inactive_file:5046 unevictable:0 dirty:70 writeback:0 unstable:0
[   86.437957]  free:29620 slab:2494 mapped:7770 pagetables:656 bounce:0
[   86.467315] Normal free:118480kB min:2036kB low:2544kB high:3052kB
active_anon:29636kB inactive_anon:29724kB active_file:14312kB
inactive_file:20184kB unevictable:0kB present:260096kB pages_scanned:0
all_unreclaimable? no
[   86.498657] lowmem_reserve[]: 0 0
[   86.502044] Normal: 1472*4kB 850*8kB 502*16kB 261*32kB 85*64kB
20*128kB 26*256kB 22*512kB 22*1024kB 20*2048kB 0*4096kB = 118480kB
[   86.565979] 9146 total pagecache pages
[   86.569732] 0 pages in swap cache
[   86.636840] Swap cache stats: add 0, delete 0, find 0/0
[   86.642120] Free swap  = 0kB
[   86.654815] Total swap = 0kB
[   86.677612] 65536 pages of RAM
[   86.692901] 31261 free pages
[   86.695861] 3930 reserved pages
[   86.699615] 2430 slab pages
[   86.705871] 19825 pages shared
[   86.709014] 0 pages swap cached
[   86.721740] alloc[0] - virt=0x00000000 phy=0xFFFFFFFF size=0x00400000
[   86.728607] Allocation failed idx=0

There seems to be a bug some where inside DMA / VM area which is
causing this fragmentation.

Any clue??

Cheers,
Ameya.

On Mon, Mar 16, 2009 at 11:54 AM, Menon, Nishanth <nm@ti.com> wrote:
>> -----Original Message-----
>> From: Gupta, Ramesh
>> Sent: Saturday, March 14, 2009 6:26 AM
>> To: Kevin Hilman
>> Cc: Menon, Nishanth; linux-omap@vger.kernel.org
>> Subject: RE: Bridge issue #3! dma_alloc_coherent causing crash - pm branch
>> > >
>> > > I enabled all the above options, do I need to add some boot
>> > options to
>> > > enable Debug messages? I am not seeing any debug
>> > information displayed in the cosole by default.
>> > > Looks like I am mising some thing :( . Any comments?
>> > >
>> >
>> > You'll only see extra messages when the kerel hits a BUG() or
>> > a WARN().  If you don't see anything more verbose with all
>> > these options enabled, then the kernel is not detecting any problems.
>>
>> Thank you.
>>
>
> Back to the dummy driver. Ramesh noted that even the dummy driver crashes on the pm branch and the master branch with larger number of iterations.
>
> This issue can be duplicated in the linux-omap master branch as follows: apply the attached patch and build with the defconfig attached,
>
> The following test script:
> for i in 0 1 2 3 4 5 6 7 8 9
> do
> for j in 0 1 2 3 4 5 6 7 8 9
> do
> for k in 0 1 2 3 4 5 6 7 8 9
> do
> for l in 0 1 2 3 4 5 6 7 8 9
> do
>        echo "insmod $i$j$k$l"
>        insmod ./dummy.ko try=3 || exit 1
>        echo "rmmod"
>        rmmod dummy.ko || exit 1
> done
> done
> done
> done
>
> will cause a crashes as follows:
>
> insmod 0279
> alloc[0] - virt=0xFF027000 phy=0x82C00000 size=0x00400000
> alloc[1] - virt=0xFF427000 phy=0x80BEC000 size=0x00001000
> alloc[2] - virt=0xFF428000 phy=0x817C0000 size=0x00011800
> rmmod
> free[0] - virt=0xff027000 phy=0x82c00000 size=0x00400000
> free[1] - virt=0xff427000 phy=0x80bec000 size=0x00001000
> free[2] - virt=0xff428000 phy=0x817c0000 size=0x00011800
> insmod 0280
> insmod: page allocation failure. order:10, mode:0xd0
> [<c0031e14>] [<c0031e14>] (dump_stack+0x0/0x14) (dump_stack+0x0/0x14) from [<c008194c>] from [<c008194c>] (__alloc_pages_internal+0x384/0x39c)
> (__alloc_pages_internal+0x384/0x39c)
> [<c00815c8>] [<c00815c8>] (__alloc_pages_internal+0x0/0x39c) (__alloc_pages_internal+0x0/0x39c) from [<c003394c>] from [<c003394c>] (__dma_alloc+0x170/0x3c8)
> (__dma_alloc+0x170/0x3c8)
> [<c00337dc>] [<c00337dc>] (__dma_alloc+0x0/0x3c8) (__dma_alloc+0x0/0x3c8) from [<c0033c30>] from [<c0033c30>] (dma_alloc_coherent+0x58/0x64)
> (dma_alloc_coherent+0x58/0x64)
> [<c0033bd8>] [<c0033bd8>] (dma_alloc_coherent+0x0/0x64) (dma_alloc_coherent+0x0/0x64) from [<bf693050>] from [<bf693050>] (dummy_init+0x50/0x10c [dummy])
> (dummy_init+0x50/0x10c [dummy])
>  r7:bf690718 r7:bf690718 r6:00000000 r6:00000000 r5:00000000 r5:00000000 r4:bf690720 r4:bf690720
>
> [<bf693000>] [<bf693000>] (dummy_init+0x0/0x10c [dummy]) (dummy_init+0x0/0x10c [dummy]) from [<c002d2f8>] from [<c002d2f8>] (__exception_text_end+0x60/0x198)
> (__exception_text_end+0x60/0x198)
>  r7:00000000 r7:00000000 r6:c03ae4c0 r6:c03ae4c0 r5:bf69073c r5:bf69073c r4:00006d4d r4:00006d4d
>
> [<c002d298>] [<c002d298>] (__exception_text_end+0x0/0x198) (__exception_text_end+0x0/0x198) from [<c00761c8>] from [<c00761c8>] (sys_init_module+0x98/0x198)
> (sys_init_module+0x98/0x198)
> [<c0076130>] [<c0076130>] (sys_init_module+0x0/0x198) (sys_init_module+0x0/0x198) from [<c002dda0>] from [<c002dda0>] (ret_fast_syscall+0x0/0x2c)
> (ret_fast_syscall+0x0/0x2c)
>  r7:00000080 r7:00000080 r6:00000000 r6:00000000 r5:0000000b r5:0000000b r4:00000000 r4:00000000
>
> Mem-info:
> Mem-info:
> Normal per-cpu:
> Normal per-cpu:
> CPU    0: hi:   42, btch:   7 usd:   1
> CPU    0: hi:   42, btch:   7 usd:   1
> Active_anon:0 active_file:0 inactive_anon:182
>  inactive_file:38 unevictable:0 dirty:0 writeback:0 unstable:0
>  free:30546 slab:493 mapped:1 pagetables:31 bounce:0
> Active_anon:0 active_file:0 inactive_anon:182
>  inactive_file:38 unevictable:0 dirty:0 writeback:0 unstable:0
>  free:30546 slab:493 mapped:1 pagetables:31 bounce:0
> Normal free:122184kB min:1440kB low:1800kB high:2160kB active_anon:0kB inactive_anon:728kB active_file:0kB inactive_file:152kB unevictable:0kB present:130048kB pages_scanned:0 ao
> Normal free:122184kB min:1440kB low:1800kB high:2160kB active_anon:0kB inactive_anon:728kB active_file:0kB inactive_file:152kB unevictable:0kB present:130048kB pages_scanned:0 ao
> lowmem_reserve[]:lowmem_reserve[]: 0 0 0 0
>
> Normal: Normal: 124*4kB 124*4kB 105*8kB 105*8kB 71*16kB 71*16kB 53*32kB 53*32kB 40*64kB 40*64kB 28*128kB 28*128kB 31*256kB 31*256kB 29*512kB 29*512kB 29*1024kB 29*1024kB 29*2048B
> = 122184kB
> 40 total pagecache pages
> 40 total pagecache pages
> 0 pages in swap cache
> 0 pages in swap cache
> Swap cache stats: add 0, delete 0, find 0/0
> Swap cache stats: add 0, delete 0, find 0/0
> Free swap  = 0kB
> Free swap  = 0kB
> Total swap = 0kB
> Total swap = 0kB
> 32768 pages of RAM
> 32768 pages of RAM
> 30599 free pages
> 30599 free pages
> 1256 reserved pages
> 1256 reserved pages
> 493 slab pages
> 493 slab pages
> 40 pages shared
> 40 pages shared
> 0 pages swap cached
> 0 pages swap cached
> <6>alloc[0] - virt=0x00000000 phy=0xFFFFFFFF size=0x00400000
> alloc[0] - virt=0x00000000 phy=0xFFFFFFFF size=0x00400000
> <3>Allocation failed idx=0
> Allocation failed idx=0
> insmod: cannot insert `./dummy.ko': Cannot allocate memory (-1): Cannot allocate memory
>
> Regards,
> Nishanth Menon
>
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RE: dma_alloc_coherent bug?

[Menon, Nishanth]

> -----Original Message-----
> From: Ameya Palande [mailto:2ameya@gmail.com]
> Sent: Monday, March 16, 2009 7:30 PM
> To: Menon, Nishanth
> Cc: Gupta, Ramesh; Kevin Hilman; linux-omap@vger.kernel.org; Ramirez Luna,
> Omar; Kanigeri, Hari; Ameya Palande; Guzman Lugo, Fernando
> Subject: Re: dma_alloc_coherent bug?
> 
> There seems to be a bug some where inside DMA / VM area which is
> causing this fragmentation.
> 
> Any clue??
Russell mentioned sometime back:
http://lkml.indiana.edu/hypermail/linux/kernel/0706.0/0370.html

So I suppose dma_alloc_coherent for > 1page size(4096) is bad? If so hmm.. I am guessing audio driver and others do use dma_alloc_coherent.. I tried my dummy driver on omapzoom master and it seemd to work fine there for 10K iterations :(.. should'nt the same fragmentation hit there too?

Any clues?

Regards,
Nishanth Menon

dma_alloc_coherent fragmentation

[Menon, Nishanth]

Looping in linux-arm ML:

Discussion Ref: [1](linux-omap mailing list)
While working with Linux OMAP kernel[2] we found that on allocating 4 meg chunks using dma_alloc_coherent and de-allocating with dma_free_coherent in a loop using a test driver[7], the memory is getting fragmented as shown by Ameya's observation [3] finally resulting in dump_stack due to lack of pages.

Searching through previous archives, found [4] which seem to imply that allocating chunks greater than 1 page could cause fragmentation.

I wonder why we see this even if we allocate and free the memory in sequence as in [5]. This seems to happen on 2.6.28 and 2.6.29 but not on the 2.6.27 based kernel[6].

Regards,
Nishanth Menon

Ref:
[1] http://marc.info/?t=123719779100002&r=1&w=2
[2] http://git.kernel.org/?p=linux/kernel/git/tmlind/linux-omap-2.6.git
[3] http://marc.info/?l=linux-omap&m=123722460022336&w=2
[4] http://lkml.indiana.edu/hypermail/linux/kernel/0706.0/0370.html 
[5] http://marc.info/?l=linux-omap&m=123719772811746&w=2
[6] http://git.omapzoom.com/?p=repo/omapkernel.git;
[7] http://marc.info/?l=linux-omap&m=123719772811746&q=p3