Break out code without functional changes. This simplifies the code and
makes way for handle two parallel request.
Signed-off-by: Per Forlin
---
drivers/mmc/card/block.c | 246 ++---
1 files changed, 142 insertions(+), 104 deletions(-)
diff --git a
Break out code from mmc_blk_issue_rw_rq to create a
block request prepare function. This doesn't change
any functionallity. This helps when handling more
than one active block request.
Signed-off-by: Per Forlin
---
drivers/mmc/card/block.c | 224 ---
. This lies the ground for
using multiple active request for one mmc queue.
Signed-off-by: Per Forlin
---
drivers/mmc/card/block.c | 125 +---
drivers/mmc/card/queue.c | 129 --
drivers/mmc/card/queue.h | 31
to run the non-blocking test cases.
Signed-off-by: Per Forlin
---
drivers/mmc/card/mmc_test.c | 322 +--
1 files changed, 313 insertions(+), 9 deletions(-)
diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c
index e8508e9..5325049
Add a debugfs file "testlist" to print all available tests
Signed-off-by: Per Forlin
---
drivers/mmc/card/mmc_test.c | 39 ++-
1 files changed, 38 insertions(+), 1 deletions(-)
diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_te
mmci.
Signed-off-by: Per Forlin
---
drivers/mmc/host/mmci.c | 146 ++
drivers/mmc/host/mmci.h |8 +++
2 files changed, 141 insertions(+), 13 deletions(-)
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index b4a7e4f..985c77d 100644
pre_req() runs dma_map_sg(), post_req() runs dma_unmap_sg.
If not calling pre_req() before omap_hsmmc_request()
dma_map_sg will be issued before starting the transfer.
It is optional to use pre_req(). If issuing pre_req()
post_req() must be to be called as well.
Signed-off-by: Per Forlin
before ending the block
request and handing over the buffer to the block layer.
Add a host-private member in mmc_data to be used by
pre_req to mark the data. The host driver will then
check this mark to see if the data is prepared or not.
Signed-off-by: Per Forlin
---
drivers/mmc/core/core.c
measurements from IOZone and mmc_test:
https://wiki.linaro.org/WorkingGroups/Kernel/Specs/StoragePerfMMC-async-req
Changes since v5:
* Fix spelling mistakes, replace "none blocking" with non-blocking.
* excluded patch "omap_hsmmc: use original sg_len..." since it is
being mer
Don't use the returned sg_len from dma_map_sg() as inparameter
to dma_unmap_sg(). Use the original sg_len for both dma_map_sg
and dma_unmap_sg according to the documentation in DMA-API.txt.
Signed-off-by: Per Forlin
Reviewed-by: Venkatraman S
---
drivers/mmc/host/omap_hsmmc.c |5 +++
Add a debugfs file "testlist" to print all available tests
Signed-off-by: Per Forlin
---
drivers/mmc/card/mmc_test.c | 39 ++-
1 files changed, 38 insertions(+), 1 deletions(-)
diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_te
Break out code without functional changes. This simplifies the code and
makes way for handle two parallel request.
Signed-off-by: Per Forlin
---
drivers/mmc/card/block.c | 246 ++---
1 files changed, 142 insertions(+), 104 deletions(-)
diff --git a
isuue_rw_rq(), then it waits for the active request to complete before
pushing it to the host. When to mmc-queue is empty it will call
isuue_rw_rq() with req=NULL to finish off the active request
without starting a new request.
Signed-off-by: Per Forlin
---
drivers/mmc/card/block.c | 121
This simple fault injection proved to be very useful to
test the error handling in the block.c rw_rq(). It may
still be useful to test if the host driver handle
pre_req() and post_req() correctly in case of errors.
Signed-off-by: Per Forlin
---
drivers/mmc/core/core.c| 54
Add an additional mmc queue request instance to make way for
two active block requests. One request may be active while the
other request is being prepared.
Signed-off-by: Per Forlin
---
drivers/mmc/card/queue.c | 44 ++--
drivers/mmc/card/queue.h
Break out code from mmc_blk_issue_rw_rq to create a
block request prepare function. This doesn't change
any functionallity. This helps when handling more
than one active block request.
Signed-off-by: Per Forlin
---
drivers/mmc/card/block.c | 224 ---
. This lies the ground for
using multiple active request for one mmc queue.
Signed-off-by: Per Forlin
---
drivers/mmc/card/block.c | 125 +---
drivers/mmc/card/queue.c | 129 --
drivers/mmc/card/queue.h | 31
order to run the none blocking test cases.
Signed-off-by: Per Forlin
---
drivers/mmc/card/mmc_test.c | 322 +--
1 files changed, 313 insertions(+), 9 deletions(-)
diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c
index e8508e9..19e1132
mmci.
Signed-off-by: Per Forlin
---
drivers/mmc/host/mmci.c | 146 ++
drivers/mmc/host/mmci.h |8 +++
2 files changed, 141 insertions(+), 13 deletions(-)
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 7721de9..8b21467 100644
pre_req() runs dma_map_sg(), post_req() runs dma_unmap_sg.
If not calling pre_req() before omap_hsmmc_request()
dma_map_sg will be issued before starting the transfer.
It is optional to use pre_req(). If issuing pre_req()
post_req() must be to be called as well.
Signed-off-by: Per Forlin
before ending the block
request and handing over the buffer to the block layer.
Add a host-private member in mmc_data to be used by
pre_req to mark the data. The host driver will then
check this mark to see if the data is prepared or not.
Signed-off-by: Per Forlin
---
drivers/mmc/core/core.c
measurements from IOZone and mmc_test:
https://wiki.linaro.org/WorkingGroups/Kernel/Specs/StoragePerfMMC-async-req
Changes since v4:
* rebase on top of linux 3.0
Per Forlin (12):
mmc: add none blocking mmc request function
omap_hsmmc: use original sg_len for dma_unmap_sg
omap_hsmmc: add support
Don't use the returned sg_len from dma_map_sg() as inparameter
to dma_unmap_sg(). Use the original sg_len for both dma_map_sg
and dma_unmap_sg according to the documentation in DMA-API.txt.
Signed-off-by: Per Forlin
Reviewed-by: Venkatraman S
---
drivers/mmc/host/omap_hsmmc.c |5 +++
On 17 June 2011 14:40, Matthew Wilcox wrote:
> On Thu, Jun 16, 2011 at 08:30:53PM +0800, Shawn Guo wrote:
>> Here is the user story that tells the need of the new api. The
>> mxs-mmc is the mmc host controller for Freescale MXS architecture.
>> There are a pair of mmc host specific parameters ma
On 16 June 2011 15:39, S, Venkatraman wrote:
> On Thu, May 26, 2011 at 3:27 AM, Per Forlin wrote:
>> How significant is the cache maintenance over head?
>> It depends, the eMMC are much faster now
>> compared to a few years ago and cache maintenance cost more due to
>>
On 16 June 2011 15:16, S, Venkatraman wrote:
> On Thu, May 26, 2011 at 3:27 AM, Per Forlin wrote:
>> Don't use the returned sg_len from dma_map_sg() as inparameter
>> to dma_unmap_sg(). Use the original sg_len for both dma_map_sg
>> and dma_unmap_sg.
>&
On 16 June 2011 15:14, S, Venkatraman wrote:
> On Thu, May 26, 2011 at 3:27 AM, Per Forlin wrote:
>> pre_req() runs dma_map_sg(), post_req() runs dma_unmap_sg.
>> If not calling pre_req() before omap_hsmmc_request()
>> dma_map_sg will be issued before starting the transfer.
On Wed, Jun 15, 2011 at 2:08 PM, Shawn Guo wrote:
> [PATCH v3] dmaengine: add new dma API for max_segment_number
The subject "dmaengine:" in this case is a bit misleading since the
patches doesn't touch any code inside drivers/dmaengine.
For this patch I would prefer subject "dma-mapping:"
There
On 1 June 2011 16:30, Nicolas Pitre wrote:
> On Tue, 31 May 2011, Per Forlin wrote:
>
>> Return error in case of pending IRQ but none functions bits
>> in CCCR_INTx is set.
>>
>> Signed-off-by: Per Forlin
>> ---
>> drivers/mmc/core/sdio_irq.c | 5 +++
On 1 June 2011 23:36, Troy Kisky wrote:
> On 6/1/2011 1:48 AM, Per Forlin wrote:
>> From: Per Forlin
>
>> diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
>> index 7b4fd7b..852021c 100644
>> --- a/include/linux/mmc/card.h
>> +++ b/include/
On 1 June 2011 17:59, Nicolas Pitre wrote:
> On Wed, 1 Jun 2011, Per Forlin wrote:
>
>> From: Per Forlin
>>
>> Daniel Drake reported an issue in the libertas sdio client that was
>> triggered by the sdio_single_irq functionality. His SDIO device seems to
>>
From: Per Forlin
Return error in case of pending IRQ but none functions bits
in CCCR_INTx are set.
Signed-off-by: Per Forlin
---
drivers/mmc/core/sdio_irq.c |5 +
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/mmc/core/sdio_irq.c b/drivers/mmc/core/sdio_irq.c
From: Per Forlin
Daniel Drake reported an issue in the libertas sdio client that was
triggered by the sdio_single_irq functionality. His SDIO device seems to
raise an interrupt even though there are no bits set in the CCCR_INTx
register. This behaviour is not supported by the sdio_single_irq
From: Per Forlin
Add quirk MMC_QUIRK_SDIO_IRQ_CCCR_INTX_0 to handle SDIO device that may
have pending IRQ when none bits are set in CCCR_INTx.
This IRQ issue was identified in the libertas sdio driver where the
SDIO device seems to raise an interrupt even if there were none function
bits in
On 1 June 2011 09:30, Linus Walleij wrote:
> 2011/5/31 Per Forlin :
>
>> +/**
>> + * sdio_single_irq_enable - enable or disable SDIO single IRQ function
>> + * @card: card to enable SDIO single irq
>> + * @value: true to enable SDIO single
Return error in case of pending IRQ but none functions bits
in CCCR_INTx is set.
Signed-off-by: Per Forlin
---
drivers/mmc/core/sdio_irq.c |5 +
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/mmc/core/sdio_irq.c b/drivers/mmc/core/sdio_irq.c
index 2f81ddc
Make sdio single irq run time configurable, default is disable. This is due
to an issue in libertas where the SDIO device seems to raise interrupt
even if there are none function bits in CCCR_INTx set. This behaviour
is not defined by the SDIO spec.
Signed-off-by: Per Forlin
---
drivers/mmc
configurable and also report a
warning if an SDIO interrupt is raised but none CCCR_INTx bits are set.
Per Forlin (2):
sdio: add function to enable and disable sdio_single_irq optimization
sdio: report error if pending IRQ but none function bits
drivers/mmc/core/sdio_irq.c | 22
On 30 May 2011 16:38, Nicolas Pitre wrote:
> On Mon, 30 May 2011, Per Forlin wrote:
>
>> Hi Daniel,
>>
>> >
>> > On 29 May 2011 15:26, Daniel Drake laptop.org> wrote:
>> > > Hi,
>> > >
>> > > The following commit in 2.6.
Hi Daniel,
>
> On 29 May 2011 15:26, Daniel Drake laptop.org> wrote:
> > Hi,
> >
> > The following commit in 2.6.39 causes instant death for libertas_sdio
> > when it receives its first interrupt during initialization:
> >
> > commit 06e8935febe687e2a561707d4c7ca4245d261dbe
>
> The crash happen
Don't use the returned sg_len from dma_map_sg() as inparameter
to dma_unmap_sg(). Use the original sg_len for both dma_map_sg
and dma_unmap_sg.
Signed-off-by: Per Forlin
---
drivers/mmc/host/omap_hsmmc.c |5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/driver
pre_req() runs dma_map_sg(), post_req() runs dma_unmap_sg.
If not calling pre_req() before omap_hsmmc_request()
dma_map_sg will be issued before starting the transfer.
It is optional to use pre_req(). If issuing pre_req()
post_req() must be to be called as well.
Signed-off-by: Per Forlin
Add a debugfs file "testlist" to print all available tests
Signed-off-by: Per Forlin
---
drivers/mmc/card/mmc_test.c | 39 ++-
1 files changed, 38 insertions(+), 1 deletions(-)
diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_te
Break out code from mmc_blk_issue_rw_rq to create a
block request prepare function. This doesn't change
any functionallity. This helps when handling more
than one active block request.
Signed-off-by: Per Forlin
---
drivers/mmc/card/block.c | 170 ---
Add an additional mmc queue request instance to make way for
two active block requests. One request may be active while the
other request is being prepared.
Signed-off-by: Per Forlin
---
drivers/mmc/card/queue.c | 44 ++--
drivers/mmc/card/queue.h
isuue_rw_rq(), then it waits for the active request to complete before
pushing it to the host. When to mmc-queue is empty it will call
isuue_rw_rq() with req=NULL to finish off the active request
without starting a new request.
Signed-off-by: Per Forlin
---
drivers/mmc/card/block.c | 118
This simple fault injection proved to be very useful to
test the error handling in the block.c rw_rq(). It may
still be useful to test if the host driver handle
pre_req() and post_req() correctly in case of errors.
Signed-off-by: Per Forlin
---
drivers/mmc/core/core.c| 54
Break out code without functional changes. This simplifies the code and
makes way for handle two parallel request.
Signed-off-by: Per Forlin
---
drivers/mmc/card/block.c | 226 +++---
1 files changed, 132 insertions(+), 94 deletions(-)
diff --git a
. This lies the ground for
using multiple active request for one mmc queue.
Signed-off-by: Per Forlin
---
drivers/mmc/card/block.c | 106 ++
drivers/mmc/card/queue.c | 129 --
drivers/mmc/card/queue.h | 30
order to run the none blocking test cases.
Signed-off-by: Per Forlin
---
drivers/mmc/card/mmc_test.c | 322 +--
1 files changed, 313 insertions(+), 9 deletions(-)
diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c
index 1853ebf..4b9cb5f
before ending the block
request and handing over the buffer to the block layer.
Add a host-private member in mmc_data to be used by
pre_req to mark the data. The host driver will then
check this mark to see if the data is prepared or not.
Signed-off-by: Per Forlin
---
drivers/mmc/core/core.c
mmci.
Signed-off-by: Per Forlin
---
drivers/mmc/host/mmci.c | 146 ++
drivers/mmc/host/mmci.h |8 +++
2 files changed, 141 insertions(+), 13 deletions(-)
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index b4a7e4f..985c77d 100644
handling to core.c. This simplifies the interface
from 4 public functions to 1. This also gives access for SDIO to use the
same functionallity, even though the function is not tuned for the SDIO
execution flow yet.
Per Forlin (12):
mmc: add none blocking mmc request function
omap_hsmmc
Optimize performance for single irq
Changes since v2.
* Rebase on mmc-next, change of line numbers no code changes.
Stefan Nilsson XK (1):
sdio: optimized SDIO IRQ handling for single irq
drivers/mmc/core/sdio_irq.c | 33 -
include/linux/mmc/card.h|1
From: Stefan Nilsson XK
If there is only 1 function interrupt registered it is possible to
improve performance by directly calling the irq handler
and avoiding the overhead of reading the CCCR registers.
Signed-off-by: Per Forlin
Acked-by: Ulf Hansson
Reviewed-by: Nicolas Pitre
---
drivers
Optimize performance for single irq
Changes since v4.
* Proper rebase on mmc-next. In previous patch, a spelling-patch in sdio_irq
was accidentally rebased on top as well causing merge conflict.
Stefan Nilsson XK (1):
sdio: optimized SDIO IRQ handling for single irq
drivers/mmc/core/sdio_
From: Stefan Nilsson XK
If there is only 1 function interrupt registered it is possible to
improve performance by directly calling the irq handler
and avoiding the overhead of reading the CCCR registers.
Signed-off-by: Per Forlin
Acked-by: Ulf Hansson
Reviewed-by: Nicolas Pitre
---
drivers
ht places. DMA iop-dma.c and imx-sdma.c, MMC: sdhci.c.
> I believe ADMA will do large transfers. Another data point.
>
> Philip
Thanks,
Per
>
> On May 7, 2011, at 12:14 PM, Per Forlin wrote:
>
>> How significant is the cache maintenance over head?
>> It depends, the eMM
On 8 May 2011 17:09, Arnd Bergmann wrote:
> On Saturday 07 May 2011, Per Forlin wrote:
>> > The mmc queue never runs empty until end of transfer.. The requests
>> > are 128 blocks (64k limit set in mmc host driver) compared to 256
>> > blocks before. This will not
On 8 May 2011 00:18, Andy Shevchenko wrote:
> On Sat, May 7, 2011 at 10:14 PM, Per Forlin wrote:
>> Add a debugfs file "testlist" to print all available tests
>>
>> Signed-off-by: Per Forlin
>> ---
>> drivers/mmc/card/mmc_test.c | 30 +++
Add an additional mmc queue request instance to make way for
two active block requests. One request may be active while the
other request is being prepared.
Signed-off-by: Per Forlin
---
drivers/mmc/card/queue.c | 44 ++--
drivers/mmc/card/queue.h
Break out code without functional changes. This simplifies the code and
makes way for handle two parallel request.
Signed-off-by: Per Forlin
---
drivers/mmc/card/block.c | 225 +++---
1 files changed, 132 insertions(+), 93 deletions(-)
diff --git a
Break out code from mmc_blk_issue_rw_rq to create a
block request prepare function. This doesn't change
any functionallity. This helps when handling more
than one active block request.
Signed-off-by: Per Forlin
---
drivers/mmc/card/block.c | 170 ---
order to run the none blocking test cases.
Signed-off-by: Per Forlin
---
drivers/mmc/card/mmc_test.c | 310 +-
1 files changed, 302 insertions(+), 8 deletions(-)
diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c
index c1c3c5a..a267253
Add a debugfs file "testlist" to print all available tests
Signed-off-by: Per Forlin
---
drivers/mmc/card/mmc_test.c | 30 ++
1 files changed, 30 insertions(+), 0 deletions(-)
diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c
ind
check this mark to see if the data is prepared or not.
Signed-off-by: Per Forlin
---
drivers/mmc/core/core.c | 78 --
include/linux/mmc/core.h |9 +-
include/linux/mmc/host.h |9 +
3 files changed, 85 insertions(+), 11 deletions(-)
diff
isuue_rw_rq(), then it waits for the active request to complete before
pushing it to the host. When to mmc-queue is empty it will call
isuue_rw_rq() with req=NULL to finish off the active request
without starting a new request.
Signed-off-by: Per Forlin
---
drivers/mmc/card/block.c | 157
Don't use the returned sg_len from dma_map_sg() as inparameter
to dma_unmap_sg(). Use the original sg_len for both dma_map_sg
and dma_unmap_sg.
Signed-off-by: Per Forlin
---
drivers/mmc/host/omap_hsmmc.c |5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/driver
mmci.
Signed-off-by: Per Forlin
---
drivers/mmc/host/mmci.c | 146 ++
drivers/mmc/host/mmci.h |8 +++
2 files changed, 141 insertions(+), 13 deletions(-)
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index b4a7e4f..985c77d 100644
pre_req() runs dma_map_sg() post_req() runs dma_unmap_sg.
If not calling pre_req() before omap_hsmmc_request(), request()
will prepare the cache just like it did it before.
It is optional to use pre_req() and post_req().
Signed-off-by: Per Forlin
---
drivers/mmc/host/omap_hsmmc.c | 87
This simple fault injection proved to be very useful to
test the error handling in the block.c rw_rq(). It may
still be useful to test if the host driver handle
pre_req() and post_req() correctly in case of errors.
Signed-off-by: Per Forlin
---
drivers/mmc/core/core.c| 54
. This lies the ground for
using multiple active request for one mmc queue.
Signed-off-by: Per Forlin
---
drivers/mmc/card/block.c | 105 +
drivers/mmc/card/queue.c | 129 --
drivers/mmc/card/queue.h | 30
and block.c
* Simplify max transfer size in mmc_test
* set TASK_RUNNING in queue.c before issue_req()
Per Forlin (12):
mmc: add none blocking mmc request function
mmc: mmc_test: add debugfs file to list all tests
mmc: mmc_test: add test for none blocking transfers
mmc: add member in mmc
On 4 May 2011 21:13, Per Forlin wrote:
> On 3 May 2011 22:02, Arnd Bergmann wrote:
>> On Tuesday 03 May 2011 20:54:43 Per Forlin wrote:
>>> >> page_not_up_to_date:
>>> >> /* Get exclusive access to the page ... */
>>> >> error = l
From: Stefan Nilsson XK
If there is only 1 function interrupt registered it is possible to
improve performance by directly calling the irq handler
and avoiding the overhead of reading the CCCR registers.
Signed-off-by: Per Forlin
Acked-by: Ulf Hansson
Reviewed-by: Nicolas Pitre
---
drivers
Optimize performance for single irq
Changes since v2.
* Clarify comment in process_sdio_pending_irqs
* Simplify sdio_single_irq if-condition
Stefan Nilsson XK (1):
sdio: optimized SDIO IRQ handling for single irq
drivers/mmc/core/sdio_irq.c | 33 -
include/
On Mon, May 2, 2011 at 9:53 PM, Per Forlin wrote:
> On Fri, Dec 3, 2010 at 1:13 PM, Chuanxiao Dong
> wrote:
>> From 984adc755cf2f7966a89e510a50f085e314fe347 Mon Sep 17 00:00:00 2001
>> From: Chuanxiao Dong
>> Date: Mon, 22 Nov 2010 16:31:12 +0800
>> Subject: [PATC
On 4 May 2011 19:34, Nicolas Pitre wrote:
> On Wed, 4 May 2011, Per Forlin wrote:
>
>> From: Stefan Nilsson XK
>>
>> If there is only 1 function registered it is possible to
>> improve performance by directly calling the irq handler
>> and avoiding the ov
On 3 May 2011 22:02, Arnd Bergmann wrote:
> On Tuesday 03 May 2011 20:54:43 Per Forlin wrote:
>> >> page_not_up_to_date:
>> >> /* Get exclusive access to the page ... */
>> >> error = lock_page_killable(page);
>> > I looked at the code in do_ge
2011/5/4 Michał Mirosław :
> 2011/5/4 Per Forlin :
>> From: Stefan Nilsson XK
>>
>> If there is only 1 function registered it is possible to
>> improve performance by directly calling the irq handler
>> and avoiding the overhead of reading the CCCR registers.
>
From: Stefan Nilsson XK
If there is only 1 function registered it is possible to
improve performance by directly calling the irq handler
and avoiding the overhead of reading the CCCR registers.
Signed-off-by: Per Forlin
Acked-by: Ulf Hansson
---
drivers/mmc/core/sdio_irq.c | 30
Optimize performance for single irq
Changes since v1.
* Add member to hold sdio_single_irq function in mmc_card and
minimize new code in process_sdio_pending_irqs
* Clarify commit message
Stefan Nilsson XK (1):
sdio: optimized SDIO IRQ handling for single irq
drivers/mmc/core/sdio_irq.c
On 4 May 2011 17:20, Nicolas Pitre wrote:
> On Wed, 4 May 2011, Per Forlin wrote:
>
>> On 4 May 2011 05:40, Nicolas Pitre wrote:
>> > On Tue, 3 May 2011, Per Forlin wrote:
>> >
>> >> From: Stefan Nilsson XK
>> >>
>> >> I
On 4 May 2011 05:40, Nicolas Pitre wrote:
> On Tue, 3 May 2011, Per Forlin wrote:
>
>> From: Stefan Nilsson XK
>>
>> If there is only 1 function registered, and IRQ:s are supported and
>> currently enabled, call the callback handler directly
>> without check
From: Stefan Nilsson XK
If there is only 1 function registered it is possible to
improve performance by avoiding the overhead of reading the
CCCR registers and directly call the function handler.
Signed-off-by: Stefan Nilsson XK
Signed-off-by: Per Forlin
---
drivers/mmc/core/sdio_irq.c
On 3 May 2011 22:02, Arnd Bergmann wrote:
> On Tuesday 03 May 2011 20:54:43 Per Forlin wrote:
>> >> page_not_up_to_date:
>> >> /* Get exclusive access to the page ... */
>> >> error = lock_page_killable(page);
>> > I looked at the code in do_ge
From: Stefan Nilsson XK
If there is only 1 function registered, and IRQ:s are supported and
currently enabled, call the callback handler directly
without checking the CCCR registers.
Signed-off-by: Stefan Nilsson XK
Signed-off-by: Per Forlin
---
drivers/mmc/core/sdio_irq.c | 14
On 3 May 2011 15:16, Arnd Bergmann wrote:
> On Thursday 28 April 2011, Per Forlin wrote:
>
>> For reads on the other hand it look like this
>> root@(none):/ dd if=/dev/mmcblk0 of=/dev/null bs=4k count=256
>> 256+0 records in
>> 256+0 records out
>> root@(non
On Fri, Dec 3, 2010 at 1:13 PM, Chuanxiao Dong wrote:
> From 984adc755cf2f7966a89e510a50f085e314fe347 Mon Sep 17 00:00:00 2001
> From: Chuanxiao Dong
> Date: Mon, 22 Nov 2010 16:31:12 +0800
> Subject: [PATCH 1/4] mmc: Enabled background operations feature if eMMC card
> supports
>
> Background o
Hi,
I am working on minimizing the latency between two block requests in
the mmc framework. The approach is simple. If there are more than one
request in the block queue the 2nd request will be prepared while the
1st request is being transfered. When the 1 st request is completed
the 2nd request w
Hi,
I am working on minimizing the latency between two block requests in
the mmc framework. The approach is simple. If there are more than one
request in the block queue the 2nd request will be prepared while the
1st request is being transfered. When the 1 st request is completed
the 2nd request w
On 21 April 2011 11:47, Per Forlin wrote:
> On 21 April 2011 11:11, Shawn Guo wrote:
>> On Thu, Apr 21, 2011 at 10:46:18AM +0200, Per Forlin wrote:
>>> On 21 April 2011 08:29, Shawn Guo wrote:
>>> > On Wed, Apr 20, 2011 at 05:30:22PM +0200, Per Forlin wrote:
>
On 26 April 2011 15:29, David Vrabel wrote:
> On 20/04/11 08:17, Per Forlin wrote:
>>
>>> Using a MMC request queue has other benefits -- it allows multiple users
>>> without having to claim/release the host. This would be useful for
>>> (especially multi-func
e improvement of performance with SDMA)
>>
>> I want to know how you think about this..
>>
> It's still an open question if pre_req and post_req were correctly
> added, even you have seen improvement of SDMA case with IOzone. I
> would leave the question to Per Forlin.
On 21 April 2011 11:47, Per Forlin wrote:
> On 21 April 2011 11:11, Shawn Guo wrote:
>> On Thu, Apr 21, 2011 at 10:46:18AM +0200, Per Forlin wrote:
>>> On 21 April 2011 08:29, Shawn Guo wrote:
>>> > On Wed, Apr 20, 2011 at 05:30:22PM +0200, Per Forlin wrote:
>
On 21 April 2011 11:11, Shawn Guo wrote:
> On Thu, Apr 21, 2011 at 10:46:18AM +0200, Per Forlin wrote:
>> On 21 April 2011 08:29, Shawn Guo wrote:
>> > On Wed, Apr 20, 2011 at 05:30:22PM +0200, Per Forlin wrote:
>> > [...]
>> >> Remove dma_map and dma_
On 21 April 2011 08:25, Shawn Guo wrote:
> On Wed, Apr 20, 2011 at 05:22:34PM +0200, Per Forlin wrote:
> [...]
>> > Do you have omap_hsmmc and mmci mmc_test result data to share?
>> >
>> I keep the here:
>> https://wiki.linaro.org/WorkingGroups/Kernel/Specs/St
On 21 April 2011 08:29, Shawn Guo wrote:
> On Wed, Apr 20, 2011 at 05:30:22PM +0200, Per Forlin wrote:
> [...]
>> Remove dma_map and dma_unmap from your host driver and run the tests
>> (obviously nonblocking and blocking will have the same results). If
>> there is still
On 20 April 2011 16:01, Shawn Guo wrote:
> On Wed, Apr 20, 2011 at 10:01:22AM +0200, Per Forlin wrote:
>> On 17 April 2011 18:48, Shawn Guo wrote:
>> > On Mon, Apr 18, 2011 at 12:33:30AM +0800, Shawn Guo wrote:
>> >> pre_req() runs dma_map_sg() post_req() runs dma_
On 20 April 2011 16:01, Shawn Guo wrote:
> On Wed, Apr 20, 2011 at 10:01:22AM +0200, Per Forlin wrote:
>> On 17 April 2011 18:48, Shawn Guo wrote:
>> > On Mon, Apr 18, 2011 at 12:33:30AM +0800, Shawn Guo wrote:
>> >> pre_req() runs dma_map_sg() post_req() runs dma_
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