is the memory region that was previously deleted
(by erase, trim or discard operation).
In order to avoid timeout when sanitizing large-scale cards,
the timeout for sanitize operation is 240 seconds.
Signed-off-by: Yaniv Gardi
Signed-off-by: Maya Erez
---
drivers/mmc/card/block.c | 67
the write packing is fetching a read request.
Signed-off-by: Maya Erez
Signed-off-by: Lee Susman
---
Our experiments showed that the write packing can increase the worst case read
latency.
Since the read latency is critical for user experience we added a write packing
control
mechanism that
The write packing statistics are used for debug purposes, in order
to get the amount of packing in different scenarios.
The statistics also include the reason for stopping the creation of
the packed request.
Signed-off-by: Maya Erez
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card
is the memory region that was previously deleted
(by erase, trim or discard operation).
In order to avoid timeout when sanitizing large-scale cards,
the timeout for sanitize operation is 240 seconds.
Signed-off-by: Yaniv Gardi
Signed-off-by: Maya Erez
---
drivers/mmc/card/block.c | 68
is the memory region that was previously deleted
(by erase, trim or discard operation).
In order to avoid timeout when sanitizing large-scale cards,
the timeout for sanitize operation is 240 seconds.
Signed-off-by: Yaniv Gardi
Signed-off-by: Maya Erez
---
drivers/mmc/card/block.c | 68
. In order to estimate
when is the best time to check for BKOPS need the host will take into
account the card capacity and percentages of changed sectors in the card.
A future enhancement can be to check the card need for BKOPS only in case
of random activity.
Signed-off-by: Maya Erez
---
This patch
Cache control is an eMMC feature and in therefore should be
part of MMC's bus resume operations, performed in mmc_suspend,
rather than in the generic mmc_suspend_host().
Signed-off-by: Maya Erez
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index aaed768..b438bb2 100644
-Original Message-
From: Subhash Jadavani [mailto:subha...@codeaurora.org]
Sent: Saturday, January 12, 2013 9:07 AM
To: Maya Erez
Cc: linux-...@vger.kernel.org; linux-arm-...@vger.kernel.org; open list
Subject: Re: [PATCH] mmc: core: disable the cache before suspend only after
stopping
.
Signed-off-by: Maya Erez
---
drivers/mmc/core/core.c |7 +--
drivers/mmc/core/mmc.c |8 +++-
2 files changed, 8 insertions(+), 7 deletions(-)
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index aaed768..b438bb2 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers
The BKOPS statistics are used for BKOPS unit tests and APT tests
to determine test success or failure.
the BKOPS statistics provide the following information:
The number of times BKOPS were issued according to it's severity level
The number of times BKOPS were interrupted by HPI.
The number of time
like to prevent the runtime suspend idle until BKOPS is completed.
This patch adds a flag to allow the controller to mark if the polling is
required or not.
Signed-off-by: Maya Erez
---
drivers/mmc/core/core.c | 82 +-
drivers/mmc/core/mmc.c
will take into account the card capacity and
percentages of changed sectors in the card. A future enhancement can be to
check the card need for BKOPS only in case of random activity.
Signed-off-by: Maya Erez
---
Documentation/mmc/mmc-dev-attrs.txt |9 ++
drivers/mmc/card/block.c
like to prevent the runtime suspend idle until BKOPS is completed.
This patch adds a flag to allow the controller to mark if the polling is
required or not.
Signed-off-by: Maya Erez
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 36cef94..cb20bac 100644
--- a/drivers/mmc
if needed, the BKOPS will be performed
without waiting for the next idle time.
Signed-off-by: Maya Erez
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 21056b9..64bbf75 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -1473,9 +1473,15 @@ static int
gt;>>> Chris - We do expect it to influence the battery consumption,
>>>>> since we now delay getting into suspend (since mmc_start_bkops
>>>>> which is called after the delayed work is executed claims the
>>>>> host).
>>>>> Th
-by: Maya Erez
---
This patch is based on the periodic BKOPS implementation in version 8 of
"support BKOPS feature for eMMC" patch.
The patch was modified to answer the following issues:
- In order to prevent a race condition between going into suspend and starting
BKOPS,
the suspe
-by: Maya Erez
Signed-off-by: Jaehoon Chung
---
This patch is based on the periodic BKOPS implementation in version 8 of
"support BKOPS feature for eMMC" patch.
The patch was modified to answer the following issues:
- In order to prevent a race condition between going into suspend an
From: Konstantin Dorfman
Unblock waiting for current request running on the bus,
when new packet supplied by block layer. This improves async request
mechanism.
In most cases new request is inserted after mmc layer fetched NULL
and was blocked on waiting for the previous request completion.
The n
From: Konstantin Dorfman
Urgent request notification stops currently running packed
transaction on bus. Finished part of the request will be
acknowledged to the block layer, remainder will be re-inserted
back to be fetched later, this will minimize urgent request latency.
Signed-off-by: Konstant
.
Signed-off-by: Maya Erez
Signed-off-by: Jaehoon Chung
---
This patch is based on the periodic BKOPs implementation in version 8 of
"support BKOPS feature for eMMC" patch.
The patch was modified to answer the following issues:
- In order to prevent a race condition between going into s
.
Signed-off-by: Maya Erez
Signed-off-by: Jaehoon Chung
---
This patch depends on the following patch:
[PATCH v11] mmc: support BKOPS feature for eMMC
This patch is based on the periodic BKOPs implementation in version 8 of
"support BKOPS feature for eMMC" patch.
The patch was modified
Expose the following packed commands tests:
- Test the write packed commands list preparation
- Simulate a returned error code
- Send an invalid packed command to the card
Signed-off-by: Lee Susman
Signed-off-by: Maya Erez
---
drivers/mmc/card/Kconfig | 11 +
drivers/mmc/card
The write packing statistics are used for the packed commands unit tests
in order to determine test success or failure
Signed-off-by: Maya Erez
---
drivers/mmc/card/block.c | 57 ++-
drivers/mmc/core/bus.c |4 +
drivers/mmc/core/debugfs.c | 176
The test scheduler allows testing a block device by dispatching
specific requests according to the test case and declare PASS/FAIL
according to the requests completion error code
Signed-off-by: Maya Erez
---
Documentation/block/test-iosched.txt | 39 ++
block/Kconfig.iosched
This test write data to the card, then send DISCARD on random
addresses on the card, send SANITIZE to the card to erase all
the unmapped areas.
Signed-off-by: Maya Erez
---
This patch depends of the following patches:
[PATCH RESEND v7 1/2] block: ioctl support for sanitize in eMMC 4.5
[PATCH
Expose the following packed commands tests:
- Test the write packed commands list preparation
- Simulate a returned error code
- Send an invalid packed command to the card
Signed-off-by: Lee Susman
Signed-off-by: Maya Erez
---
drivers/mmc/card/Kconfig | 11 +
drivers/mmc/card
The test scheduler allows testing a block device by dispatching
specific requests according to the test case and declare PASS/FAIL
according to the requests completion error code
Signed-off-by: Maya Erez
---
Documentation/block/test-iosched.txt | 39 ++
block/Kconfig.iosched
The write packing statistics are used for the packed commands unit tests
in order to determine test success or failure
Signed-off-by: Maya Erez
---
drivers/mmc/card/block.c | 57 ++-
drivers/mmc/core/bus.c |4 +
drivers/mmc/core/debugfs.c | 176
sysfs by writing the required value to:
/sys/block//num_wr_reqs_to_start_packing.
The trigger for disabling the write packing is fetching a read request.
Signed-off-by: Maya Erez
---
Our experiments showed that the write packing causes degradation of the read
throughput, in parallel read and write
sysfs by writing the required value to:
/sys/block//num_wr_reqs_to_start_packing.
The trigger for disabling the write packing is fetching a read request.
Signed-off-by: Maya Erez
---
Documentation/mmc/mmc-dev-attrs.txt | 17 ++
drivers/mmc/card/block.c| 105
Separate MMC specific attributes from general block device
attributes and move them from the /sys/block/ directory
to /sys/block//mmc directory
Signed-off-by: Maya Erez
---
drivers/mmc/card/block.c | 71 +
1 files changed, 64 insertions(+), 7
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