Hi
I tested direct io with a ion allocated buffer, got a -EFAULT
error. It turned out that ion_mmap() set VM_IO & VM_PFNMAP, but
check_vma_flags() (do_direct_IO() calls it) doesn't allow that VMA has
these flags set. Could you give me any hit that could solve this
issue?
--
Cheers,
Rock
_
On 2018-10-10 23:03, Michal Hocko wrote:
On Wed 10-10-18 22:26:41, Arun KS wrote:
On 2018-10-10 21:00, Vlastimil Babka wrote:
> On 10/5/18 10:10 AM, Arun KS wrote:
> > When free pages are done with higher order, time spend on
> > coalescing pages by buddy allocator can be reduced. With
> > secti
On 05/10/2018 15:28, Rasmus Villemoes wrote:
Since lbid isn't mentioned anywhere else in greybus/, it's hard to
figure out how it was meant to be used. It does seem like entirely
dead (write-only) code.
yep, dead code
Reviewed-by: Bryan O'Donoghue
On 05/10/2018 15:28, Rasmus Villemoes wrote:
Signed-off-by: Rasmus Villemoes
---
I have no idea if the performance matters (it probably doesn't). Feel
free to ignore this and the followup cleanup.
What's the problem you're fixing here ?
Is it tested ?
__
Remove the coherent buffer __iomem cookie because the buffer is
allocated from dma_alloc_coherent().
warning: incorrect type in assignment (different address spaces)
expected unsigned char [noderef] [usertype] *virt_base
got void *[assigned] mem
warning: incorrect type in argument 3 (differe
Fix Sparse warnings:
drivers/staging/vboxvideo/vbox_mode.c:309:6: warning:
symbol 'vbox_primary_atomic_disable' was not declared. Should it be static?
drivers/staging/vboxvideo/vbox_mode.c:452:6: warning:
symbol 'vbox_cursor_atomic_disable' was not declared. Should it be static?
Signed-off-by: Cr
On Wed, Oct 10, 2018 at 12:23 PM Lubomir Rintel wrote:
>
> Hi.
>
> This patchset adds support for the Embedded Controller on an OLPC XO
> 1.75 machine. OLPC XO 1.75 is a MMP2 based ARM laptop. It plugs into
> the existing OLPC platform infrastructure, currently used by the x86
> based models.
>
>
On Wed 10-10-18 22:26:41, Arun KS wrote:
> On 2018-10-10 21:00, Vlastimil Babka wrote:
> > On 10/5/18 10:10 AM, Arun KS wrote:
> > > When free pages are done with higher order, time spend on
> > > coalescing pages by buddy allocator can be reduced. With
> > > section size of 256MB, hot add latency
The battery and the protocol are essentially the same as OLPC XO 1.5,
but the responses from the EC are LSB first.
Signed-off-by: Lubomir Rintel
---
drivers/power/supply/olpc_battery.c | 23 ++-
1 file changed, 18 insertions(+), 5 deletions(-)
diff --git a/drivers/power/supp
It is actually plaform independent. Move it to the olpc-ec driver from
the X86 OLPC platform, so that it could be used by the ARM based laptops
too.
Signed-off-by: Lubomir Rintel
---
arch/x86/include/asm/olpc.h | 17 -
arch/x86/platform/olpc/olpc.c | 119 +-
It's based off the driver from the OLPC kernel sources. Somewhat
modernized and cleaned up, for better or worse.
Modified to plug into the olpc-ec driver infrastructure (so that battery
interface and debugfs could be reused) and the SPI slave framework.
Signed-off-by: Lubomir Rintel
---
drivers
The XO-1 and XO-1.5 batteries apparently differ in an ability to report
ambient temperature. Add a different compatible string to the 1.5
battery.
Signed-off-by: Lubomir Rintel
---
arch/x86/platform/olpc/olpc_dt.c | 59 +++-
1 file changed, 42 insertions(+), 17 deleti
The global variables for private data are not too nice. I'd like some
more, and that would clutter the global name space even further.
Signed-off-by: Lubomir Rintel
---
drivers/power/supply/olpc_battery.c | 73 +++--
1 file changed, 38 insertions(+), 35 deletions(-)
diff
This wouldn't work on the DT-based ARM platform. Let's read the EC version
directly from the EC driver instead.
This makes the driver no longer x86 specific.
Signed-off-by: Lubomir Rintel
---
drivers/power/supply/Kconfig| 2 +-
drivers/power/supply/olpc_battery.c | 35 +
Just return ENODEV, so that whoever attempted to use the EC call can
defer their work.
Signed-off-by: Lubomir Rintel
---
drivers/platform/olpc/olpc-ec.c | 7 +--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/platform/olpc/olpc-ec.c b/drivers/platform/olpc/olpc-ec.c
in
All OLPC ECs are able to turn the power to the DCON on an off. Use the
regulator framework to expose the functionality.
Signed-off-by: Lubomir Rintel
---
drivers/platform/olpc/Kconfig | 1 +
drivers/platform/olpc/olpc-ec.c | 65 +
2 files changed, 66 insertions
Avoid using the x86 OLPC platform specific call to get the board
version. It won't work on FDT-based ARM MMP2 platform.
Signed-off-by: Lubomir Rintel
---
drivers/power/supply/olpc_battery.c | 10 +++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/power/supply/olpc_b
According to [1] and [2], the temperature values are in tenths of degree
Celsius. Exposing the Celsius value makes the battery appear on fire:
$ upower -i /org/freedesktop/UPower/devices/battery_olpc_battery
...
temperature: 236.9 degrees C
Tested on OLPC XO-1 and OLPC XO-1.75 l
There are ARM OLPC machines that use mostly the same drivers, including
EC infrastructure, DCON and Battery.
While at that, fix Kconfig to allow building this as a module.
Signed-off-by: Lubomir Rintel
---
arch/x86/Kconfig | 11 ---
drivers/input/mouse/Kconfig |
The OLPC XO-1.75 Embedded Controller is a SPI master that uses extra
signals for handshaking. It needs to know when is the slave (Linux)
side's TX FIFO ready for transfer (the ready-gpio signal on the SPI
controller node) and when does it wish to respond with a command (the
cmd-gpio property).
Sig
Also, the header is x86 specific, while there are non-x86 OLPC machines.
Signed-off-by: Lubomir Rintel
---
drivers/platform/olpc/olpc-ec.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/platform/olpc/olpc-ec.c b/drivers/platform/olpc/olpc-ec.c
index f99b183d5296..35a21c66cd0d 100644
The XO-1 and XO-1.5 batteries apparently differ in an ability to report
ambient temperature.
Signed-off-by: Lubomir Rintel
---
Documentation/devicetree/bindings/power/supply/olpc_battery.txt | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/pow
It doesn't make sense to always have this built-in, e.g. on ARM
multiplatform kernels. A better way to address the problem the original
commit aimed to solve is to fix Kconfig.
This reverts commit f48d1496b8537d75776478c6942dd87f34d7f270.
Signed-off-by: Lubomir Rintel
---
drivers/platform/olpc/
Hi.
This patchset adds support for the Embedded Controller on an OLPC XO
1.75 machine. OLPC XO 1.75 is a MMP2 based ARM laptop. It plugs into
the existing OLPC platform infrastructure, currently used by the x86
based models.
The EC operates in SPI master mode, meaning the SOC is the SPI slave. It
On 2018-10-10 21:00, Vlastimil Babka wrote:
On 10/5/18 10:10 AM, Arun KS wrote:
When free pages are done with higher order, time spend on
coalescing pages by buddy allocator can be reduced. With
section size of 256MB, hot add latency of a single section
shows improvement from 50-60 ms to less th
On 10/5/18 10:10 AM, Arun KS wrote:
> They not only increase the code footprint, they actually make things
> slower rather than faster. Remove them as contemporary hardware doesn't
> need any hint.
>
> Suggested-by: Dan Williams
> Signed-off-by: Arun KS
Yeah, a tight loop with fixed stride is a
On 10/5/18 10:10 AM, Arun KS wrote:
> When free pages are done with higher order, time spend on
> coalescing pages by buddy allocator can be reduced. With
> section size of 256MB, hot add latency of a single section
> shows improvement from 50-60 ms to less than 1 ms, hence
> improving the hot add
On Wed, Oct 10, 2018 at 03:03:05PM +0100, Laurence Rochfort wrote:
> On Tue, Oct 09, 2018 at 03:13:03PM +0200, Greg Kroah-Hartman wrote:
> > On Thu, Oct 04, 2018 at 06:52:25PM +0100, Laurence Rochfort wrote:
> > > Silence the below sparse warnings by casting betwen u8 __iomem *, and
> > > void *.
>
On Tue, Oct 09, 2018 at 03:13:03PM +0200, Greg Kroah-Hartman wrote:
> On Thu, Oct 04, 2018 at 06:52:25PM +0100, Laurence Rochfort wrote:
> > Silence the below sparse warnings by casting betwen u8 __iomem *, and
> > void *.
> >
> > warning: incorrect type in assignment (different address spaces)
>
On Wed, Oct 10, 2018 at 04:21:16PM +0530, Arun KS wrote:
> diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
> index e379e85..2416136 100644
> --- a/mm/memory_hotplug.c
> +++ b/mm/memory_hotplug.c
> @@ -690,9 +690,13 @@ static int online_pages_range(unsigned long start_pfn,
> unsigned long nr_
On 2018-10-10 13:37, Oscar Salvador wrote:
On Fri, Oct 05, 2018 at 01:40:05PM +0530, Arun KS wrote:
When free pages are done with higher order, time spend on
coalescing pages by buddy allocator can be reduced. With
section size of 256MB, hot add latency of a single section
shows improvement from
Hi Paul,
On Tue, Aug 28, 2018 at 5:02 PM Paul Kocialkowski
wrote:
>
> This introduces the required definitions for HEVC decoding support with
> stateless VPUs. The controls associated to the HEVC slice format provide
> the required meta-data for decoding slices extracted from the bitstream.
>
So
On Fri, Oct 05, 2018 at 01:40:05PM +0530, Arun KS wrote:
> When free pages are done with higher order, time spend on
> coalescing pages by buddy allocator can be reduced. With
> section size of 256MB, hot add latency of a single section
> shows improvement from 50-60 ms to less than 1 ms, hence
> i
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