On Wed, 2016-04-27 at 18:05 +0300, Michael S. Tsirkin wrote:
>
> I really don't get it.
>
> There's exactly one device that works now and needs the work-around and
> so that we need to support, and that is virtio. It happens to have
> exactly the same issue on all platforms.
False. We have other
On Wed, Apr 27, 2016 at 8:05 AM, Tom Lendacky wrote:
> On 04/27/2016 09:47 AM, Andy Lutomirski wrote:
>> On Wed, Apr 27, 2016 at 7:44 AM, Tom Lendacky
>> wrote:
>>> On 04/27/2016 09:33 AM, Andy Lutomirski wrote:
On Tue, Apr 26, 2016 at 3:56 PM, Tom Lendacky
wrote:
> For AMD proce
On Tue, 2016-04-26 at 12:42 +, Vineet Gupta wrote:
On Friday 22 April 2016 06:56 PM, Lada Trimasova wrote:
I think what we have now is sufficient - but u seem to want a prettier failure
output.
Anyhow, this print is coming from util/evsel.c: perf_evsel__open_strerror()
At the very least you
On Wed, Apr 27, 2016 at 03:59:28PM +0200, Hans de Goede wrote:
> The maximum supported voltage for ldo_io# is 3.3V, but on cold
> boot the selector comes up at 0x1f, which maps to 3.8V.
Why not just implement that? We know what it does and it preserves the
expected behaviour where we don't touch
On Wed, Apr 27, 2016 at 7:54 AM, Michael S. Tsirkin wrote:
> On Wed, Apr 27, 2016 at 07:43:07AM -0700, Andy Lutomirski wrote:
>> On Wed, Apr 27, 2016 at 7:38 AM, Michael S. Tsirkin wrote:
>> > On Wed, Apr 27, 2016 at 07:31:43AM -0700, Andy Lutomirski wrote:
>> >> On Wed, Apr 27, 2016 at 7:23 AM,
On Wed, Apr 27, 2016 at 03:26:59PM +0100, Lorenzo Pieralisi wrote:
> On Tue, Apr 26, 2016 at 09:39:16PM -0500, Bjorn Helgaas wrote:
> > On Fri, Apr 15, 2016 at 07:06:40PM +0200, Tomasz Nowicki wrote:
> > > Platforms that have memory mapped IO port (such as ARM64) need special
> > > handling for PCI
On Wed, Apr 27, 2016 at 04:58:51PM +0200, Joerg Roedel wrote:
> On Wed, Apr 27, 2016 at 05:54:57PM +0300, Michael S. Tsirkin wrote:
> > Point is, QEMU is not the only virtio implementation out there.
> > So we can't know no virtio implementations have an IOMMU as long as
> > linux supports this IOM
On Tue, Apr 26, 2016 at 02:51:01PM -0700, Gwendal Grignou wrote:
> Julius and I were looking at the code when we spotted the issue.
>
> As Julius said, "just pass a boot param", is not easy on certain
> machines, like phone. It is not user friendly either.
> The system won't boot at all, a typical
On Wed, Apr 27, 2016 at 08:41:06AM +0300, Felipe Balbi wrote:
> Grygorii Strashko writes:
> > On 04/26/2016 09:17 AM, Felipe Balbi wrote:
> >> Grygorii Strashko writes:
> >>> Now not all DMA paremters configured properly for "xhci-hcd" platform
> >>> device which is created manually. For example:
On Wed, Apr 27, 2016 at 04:35:54PM +0200, Boris Brezillon wrote:
> The EBI (External Bus Interface) is used to access external peripherals
> (NOR, SRAM, NAND, and other specific devices like ethernet controllers).
> Each device is assigned a CS line and an address range and can have its
> own confi
On Wed, Mar 30, 2016 at 07:59:44PM +0530, Laxman Dewangan wrote:
> MAX77620/MAX20024 are Power Management IC from the MAXIM.
> It supports RTC, multiple GPIOs, multiple DCDC and LDOs,
> watchdog, clock etc.
>
> Add MFD drier to provides common support for accessing the
> device; additional drivers
On Wed, Apr 27, 2016 at 01:49:59PM +0100, Lee Jones wrote:
> On Wed, 30 Mar 2016, Laxman Dewangan wrote:
>
> > The MAXIM PMIC MAX77620 and MAX20024 are power management IC
> > which supports RTC, GPIO, DCDC/LDO regulators, interrupt,
> > watchdog etc.
> >
> > Add DT binding document for the diffe
On 04/27/2016 09:47 AM, Andy Lutomirski wrote:
> On Wed, Apr 27, 2016 at 7:44 AM, Tom Lendacky wrote:
>> On 04/27/2016 09:33 AM, Andy Lutomirski wrote:
>>> On Tue, Apr 26, 2016 at 3:56 PM, Tom Lendacky
>>> wrote:
For AMD processors that support PAT, set the write-protect cache mode
(_P
On Wed, Apr 27, 2016 at 04:56:32PM +0200, Joerg Roedel wrote:
> On Wed, Apr 27, 2016 at 05:34:30PM +0300, Michael S. Tsirkin wrote:
> > On Wed, Apr 27, 2016 at 04:23:32PM +0200, Joerg Roedel wrote:
>
> > QEMU can choose to bypass IOMMU for one device and not the other.
> > IOMMU in QEMU isn't invo
160419' of
> git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux (2016-04-23 14:50:39
> +0200)
>
> are available in the git repository at:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git
> tags/perf-core-for-mingo-20160427
>
> f
On Wed, Apr 27, 2016 at 04:40:05PM +0200, Hans de Goede wrote:
> Or, since regulator_of_get_init_data uses for_each_available_child_of_node
> which checks the "status" value we can actually already use
> "status=disabled" cool. So this simply already works :)
To repeat you really shouldn't have *
On Wed, Apr 27, 2016 at 01:13:33PM +0200, Arnd Bergmann wrote:
> On Wednesday 27 April 2016 14:11:40 Heikki Krogerus wrote:
> > Fixes a compiler error:
> >
> > drivers/phy/phy-core.c: In function ‘__of_phy_provider_register’:
> > drivers/phy/phy-core.c:848:13: error: implicit declaration of functi
The new free_pcp_prepare() function shares a lot of code with
free_pages_prepare(), which makes this a maintenance risk when some future
patch modifies only one of them. We should be able to achieve the same effect
(skipping free_pages_check() from !DEBUG_VM configs) by adding a parameter to
free_p
On Wed, Apr 27, 2016 at 7:38 AM, Michael S. Tsirkin wrote:
> On Wed, Apr 27, 2016 at 07:31:43AM -0700, Andy Lutomirski wrote:
>> On Wed, Apr 27, 2016 at 7:23 AM, Joerg Roedel wrote:
>> > On Wed, Apr 27, 2016 at 04:37:04PM +0300, Michael S. Tsirkin wrote:
>> >> One correction: it's a feature of th
From: Vlastimil Babka
!DEBUG_VM size and bloat-o-meter:
add/remove: 1/0 grow/shrink: 0/2 up/down: 124/-370 (-246)
function old new delta
free_pages_check_bad - 124+124
free_pcppages_bulk 1288
On Wed, Apr 27, 2016 at 05:54:57PM +0300, Michael S. Tsirkin wrote:
> Point is, QEMU is not the only virtio implementation out there.
> So we can't know no virtio implementations have an IOMMU as long as
> linux supports this IOMMU.
> virtio always used physical addresses since it was born and if i
* Paul E. McKenney wrote:
> Hello, Ingo,
>
> The changes in this series include:
>
> 1.Documentation updates, including fixes to the design-level
> requirements documentation and a fixed version of the design-level
> data-structure documentation. These fixes include removing
>
On Thu, Apr 7, 2016 at 2:13 AM, Aniroop Mathur wrote:
> Hello Mr. Henrik,
>
> On Thu, Apr 7, 2016 at 1:21 AM, Henrik Rydberg wrote:
>> Hi Aniroop,
>>
I am not sure what the urgency is. It is more of a theoretical problem
ans so far the proposed solutions were actually introducing more
>
On Wed, Apr 27, 2016 at 04:50:30PM +0300, Kirill A. Shutemov wrote:
> I know nothing about kvm. How do you protect against pmd splitting between
> get_user_pages() and the check?
get_user_pages_fast() runs fully lockless and unpins the page right
away (we need a get_user_pages_fast without the FOL
On Wed 2016-04-27 16:39:51, Borislav Petkov wrote:
> On Wed, Apr 27, 2016 at 04:30:45PM +0200, Pavel Machek wrote:
> > That does not answer the question. "Why would I want SME on my
> > system?".
>
> Because your question wasn't formulated properly. Here's some text from
> the 0th mail which you c
Vlastimil Babka pointed out that an unlikely annotation in free_pages_prepare
shrinks stack usage by moving compound handling to the end of the function.
add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-30 (-30)
function old new delta
free_pages_prepare
Vlastimil Babka pointed out that a patch weakens a zone_reclaim test
which while "safe" defeats the purposes of the debugging check. As most
configurations eliminate this check anyway, I thought it was better to
simply revert the patch instead of adding a second check in zone_reclaim.
This is a re
Check without side-effects should be easier to maintain. It also removes the
duplicated cpupid and flags reset done in !DEBUG_VM variant of both
free_pcp_prepare() and then bulkfree_pcp_prepare(). Finally, it enables
the next patch.
It shouldn't result in new branches, thanks to inlining of the ch
Vlastimil Babka pointed out that the original code was protected by
the zone lock and provided a fix.
This is a fix to the mmotm patch
mm-page_alloc-check-once-if-a-zone-has-isolated-pageblocks.patch . Once
applied the following line should be removed from the changelog "Technically
this is race-p
This is a follow-up series based on Vlastimil Babka's review feedback.
The first change is that the second patch in the previous series was dropped
as the patch "mm, page_alloc: inline the fast path of the zonelist iterator"
is fine. The nodemask pointer is the same between cpuset retries. If the
z
On 04/27/2016 03:56 PM, Josh Boyer wrote:
On Wed, Apr 27, 2016 at 9:26 AM, Môshe van der Sterre wrote:
(additionally CC-ing Josh Triplett)
Thanks for doing so. I completely forgot.
On 04/27/2016 02:50 PM, Josh Boyer wrote:
The promise of pretty boot splashes from firmware via BGRT was at
On Wed, Apr 27, 2016 at 10:50:34PM +0800, Boqun Feng wrote:
>
> Sorry, my bad, we can't implement cmpxchg like this.. please ignore
> this, I should really go to bed soon...
>
> But still, we can save the "tmp" for xchg() I think.
>
No.. we can't. Sorry for all the noise.
This patch looks good
On Wed, Apr 27, 2016 at 05:34:30PM +0300, Michael S. Tsirkin wrote:
> On Wed, Apr 27, 2016 at 04:23:32PM +0200, Joerg Roedel wrote:
> QEMU can choose to bypass IOMMU for one device and not the other.
> IOMMU in QEMU isn't involved when it's bypassed.
And it is QEMU's task to tell the OS, right? A
On Tue, Apr 26, 2016 at 9:39 AM, Daniel Baluta wrote:
> BMM150 is register compatible with magnetometer part of
> BMC156.
>
> Datasheet is at:
> http://www.mouser.com/ds/2/783/BST-BMM150-DS001-01-786480.pdf
>
> Signed-off-by: Daniel Baluta
> ---
> Lucas let me know if it works for you. I don't ha
On Wed, Apr 27, 2016 at 07:43:07AM -0700, Andy Lutomirski wrote:
> On Wed, Apr 27, 2016 at 7:38 AM, Michael S. Tsirkin wrote:
> > On Wed, Apr 27, 2016 at 07:31:43AM -0700, Andy Lutomirski wrote:
> >> On Wed, Apr 27, 2016 at 7:23 AM, Joerg Roedel wrote:
> >> > On Wed, Apr 27, 2016 at 04:37:04PM +0
From: Kan Liang
The accumulated period for dummy entry should also be 0. Otherwise, the
total overhead could be overcounted.
$ perf record -e '{LLC-load-misses,cpu/instructions/}' --call-graph=lbr
./tchain
$ perf report --stdio
# To display the perf.data header info, please use --header/
From: Arnaldo Carvalho de Melo
Propagate the error instead.
Cc: David Ahern
Cc: Hitoshi Mitake
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-z6erjg35d1gekevwujoa0...@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
---
tools/perf/bench/mem-functions.
Signed-off-by: Andreas Larsson
---
MAINTAINERS |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/MAINTAINERS b/MAINTAINERS
index 1d5b4be..08ffebd 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4903,7 +4903,7 @@ F:net/ipv4/gre_offload.c
F: include/net/gre.h
GRE
From: Masami Hiramatsu
Since other methods return 0 if succeeded (or filedesc), let
probe_file__add_event() return 0 instead of the length of written bytes.
Signed-off-by: Masami Hiramatsu
Cc: Ananth N Mavinakayanahalli
Cc: Hemant Kumar
Cc: Namhyung Kim
Cc: Peter Zijlstra
Link: http://lkml.
From: Arnaldo Carvalho de Melo
To reduce the size of builtin-trace.c.
Cc: Adrian Hunter
Cc: David Ahern
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-8r3gmymyn3r0ynt4yuzsp...@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
---
tools/perf/builtin-tra
From: Davidlohr Bueso
Given that the 'val' parameter is ignored for FUTEX_LOCK_PI, get rid of
the bogus deadlock detection flag in the wrapper code and avoid the
extra argument, making it resemble its unlock counterpart. And if
nothing else, we already only pass 0 anyway.
Signed-off-by: Davidloh
From: Elad Kanfi
The tx interrupt is of edge type, and in case such interrupt is triggered
while it is masked it will not be handled even after tx interrupts are
re-enabled in the end of NAPI poll.
This will cause tx network to stop in the following scenario:
* Rx is being handled, hence interru
From: Eric Engestrom
Signed-off-by: Eric Engestrom
Cc: Adrian Hunter
Cc: David Ahern
Cc: Peter Zijlstra
Link:
http://lkml.kernel.org/r/1461577678-29517-1-git-send-email-eric.engest...@imgtec.com
Signed-off-by: Arnaldo Carvalho de Melo
---
tools/perf/util/thread.c | 2 +-
1 file changed, 1
From: Arnaldo Carvalho de Melo
Prep work for next patches, where we'll need access to the created
evsels, to possibly configure callchains.
Cc: Adrian Hunter
Cc: David Ahern
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-2pcgsgnkgellhlcao4aub...@git.kernel.or
From: Colin Ian King
The current assert check is checking an assignment, which will always be
true. Instead, the assert should be checking if scale is equal to 0.122
Signed-off-by: Colin Ian King
Reviewed-by: Masami Hiramatsu
Cc: Alexander Shishkin
Cc: Jiri Olsa
Cc: Peter Zijlstra
Link:
h
From: Masami Hiramatsu
Set kprobe group name as "probe" if it is not given.
Signed-off-by: Masami Hiramatsu
Signed-off-by: Masami Hiramatsu
Cc: Ananth N Mavinakayanahalli
Cc: Hemant Kumar
Cc: Namhyung Kim
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/20160426090413.11891.95640.stgit@de
From: Arnaldo Carvalho de Melo
Introduced in commit 4babf2c5efb7 ("x86: wire up preadv2 and pwritev2").
This will make 'perf trace' aware of them.
Cc: Adrian Hunter
Cc: David Ahern
Cc: Jiri Olsa
Cc: Milian Wolff
Cc: Namhyung Kim
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-vojoylgce2ce
From: Arnaldo Carvalho de Melo
To check deeply nested page fault callchains.
Cc: Adrian Hunter
Cc: David Ahern
Cc: Jiri Olsa
Cc: Milian Wolff
Cc: Namhyung Kim
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-wuji34xx003kr88nmqt6j...@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
--
From: Jiri Olsa
Turn current clean output:
$ make clean
rm -f arch/x86/include/generated/asm/syscalls_64.c
CLEANlibbpf
CLEANlibapi
into:
$ make clean
CLEANx86
CLEANlibapi
CLEANlibbpf
Signed-off-by: Jiri Olsa
Tested-by: Arnaldo Carvalho de Melo
C
On Wed, Apr 27, 2016 at 7:44 AM, Tom Lendacky wrote:
> On 04/27/2016 09:33 AM, Andy Lutomirski wrote:
>> On Tue, Apr 26, 2016 at 3:56 PM, Tom Lendacky
>> wrote:
>>> For AMD processors that support PAT, set the write-protect cache mode
>>> (_PAGE_CACHE_MODE_WP) entry to the actual write-protect v
On Wed, Apr 27, 2016 at 09:58:17PM +0800, Boqun Feng wrote:
> On Wed, Apr 27, 2016 at 05:16:45PM +0800, Pan Xinhui wrote:
> > From: Pan Xinhui
> >
> > Implement xchg{u8,u16}{local,relaxed}, and
> > cmpxchg{u8,u16}{,local,acquire,relaxed}.
> >
> > It works on all ppc.
> >
> > remove volatile of
On 04/27/2016 09:33 AM, Andy Lutomirski wrote:
> On Tue, Apr 26, 2016 at 3:56 PM, Tom Lendacky wrote:
>> For AMD processors that support PAT, set the write-protect cache mode
>> (_PAGE_CACHE_MODE_WP) entry to the actual write-protect value (x05).
>
> What's the purpose of using the WP memory type
From: Andrey Ryabinin
write_buildid() increments 'name_len' with intention to take into
account trailing zero byte. However, 'name_len' was already incremented
in machine__write_buildid_table() before. So this leads to
out-of-bounds read in do_write():
$ ./perf record sleep 0
[ perf record:
From: Jiri Olsa
Fix perf_clean target to follow the same logic as perf target.
Fixes the following make invokation:
$ cd && make tools/perf_clean
Reported-by: TJ
Signed-off-by: Jiri Olsa
Tested-by: Arnaldo Carvalho de Melo
Cc: David Ahern
Cc: Namhyung Kim
Cc: Peter Zijlstra
Bugzilla:
Michal Hocko wrote:
> On Wed 27-04-16 19:53:21, Tetsuo Handa wrote:
> [...]
> > > Let's hope that filesystems will drop direct GFP_NOFS (resp. ~__GFP_FS)
> > > usage as much and possible and only use a properly documented
> > > memalloc_nofs_{save,restore} checkpoints where they are appropriate.
>
On 25.04.2016 15:48, Chris Bainbridge wrote:
The XHCI controller presents two USB buses to the system - one for USB2
and one for USB3. The hub init code (hub_port_init) is reentrant but
only locks one bus per thread, leading to a race condition failure when
two threads attempt to simultaneously i
From: Masami Hiramatsu
Fix a bug to close target elf file in get_text_start_address().
Signed-off-by: Masami Hiramatsu
Cc: Namhyung Kim
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/20160426064737.1443.44093.stgit@devbox
Signed-off-by: Arnaldo Carvalho de Melo
---
tools/perf/util/probe-
From: Ravi Bangoria
Perf is not able to register probe in kernel module when dwarf supprt
is not there(and so it goes for symtab). Perf passes full path of
module where only module name is required which is causing the problem.
This patch fixes this issue.
Before applying patch:
$ dpkg -s lib
From: Arnaldo Carvalho de Melo
Leave it alone so that it ends up assigned to SCA_PID via its type,
'pid_t', that will look up the pid on the machine thread rb_tree and
possibly find its COMM.
Cc: Adrian Hunter
Cc: David Ahern
Cc: Jiri Olsa
Cc: Milian Wolff
Cc: Namhyung Kim
Cc: Wang Nan
Lin
On Tue, Apr 26, 2016 at 3:55 PM, Tom Lendacky wrote:
> This RFC patch series provides support for AMD's new Secure Memory
> Encryption (SME) feature.
>
> SME can be used to mark individual pages of memory as encrypted through the
> page tables. A page of memory that is marked encrypted will be aut
From: Arnaldo Carvalho de Melo
We get notifications for threads that gets created while we're tracing,
but for preexisting threads we may end not having synthesized them, like
when tracing a 'perf trace' session that will use '--pid' to trace some
other thread.
And besides we should probably sto
On Wed, Apr 27, 2016 at 04:30:45PM +0200, Pavel Machek wrote:
> That does not answer the question. "Why would I want SME on my
> system?".
Because your question wasn't formulated properly. Here's some text from
the 0th mail which you could've found on your own:
"The following links provide additi
Hi,
On 27-04-16 16:37, Mark Brown wrote:
On Wed, Apr 27, 2016 at 04:31:02PM +0200, Hans de Goede wrote:
On 27-04-16 16:24, Mark Brown wrote:
The regulator API should not touch any regulators that it doesn't have
permission to change the state for. All other regulators are strictly
read only
From: Arnaldo Carvalho de Melo
Cc: Adrian Hunter
Cc: David Ahern
Cc: Jiri Olsa
Cc: Milian Wolff
Cc: Namhyung Kim
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-shj0fazntmskhjild5i6x...@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
---
tools/perf/builtin-trace.c | 21
2016-04-27 05:40-0400, Gerg Kurz:
> Quoting Greg Kurz :
>
>> Commit c896939f7cff ("KVM: use heuristic for fast VCPU lookup by id") added
>> a return path that prevents vcpu ids to exceed KVM_MAX_VCPUS. This is a
>> problem for powerpc where vcpu ids can grow up to 8*KVM_MAX_VCPUS.
>>
>> This patc
HI,
> Am 27.04.2016 um 16:23 schrieb Peter Ujfalusi :
>
> On 04/27/2016 05:10 PM, Tero Kristo wrote:
>> On 27/04/16 16:10, H. Nikolaus Schaller wrote:
>>>
Am 27.04.2016 um 14:31 schrieb Tero Kristo :
On 27/04/16 09:04, H. Nikolaus Schaller wrote:
>
>> Am 26.04.2016 um 19
On Wed, Apr 27, 2016 at 04:31:02PM +0200, Hans de Goede wrote:
> On 27-04-16 16:24, Mark Brown wrote:
> >The regulator API should not touch any regulators that it doesn't have
> >permission to change the state for. All other regulators are strictly
> >read only.
> How do we give permission to ch
From: Arnaldo Carvalho de Melo
While trying to use --call-graph lbr in 'perf trace', since we only are
interested in the callchain for userspace, up to the callchain, I found
that 'perf evlist' is not decoding the branch_sample_type field, fix it.
Before:
# perf record --call-graph lbr usleep
From: Arnaldo Carvalho de Melo
There is an upper limit to what tooling considers a valid callchain,
and it was tied to the hardcoded value in the kernel,
PERF_MAX_STACK_DEPTH (127), now that this can be tuned via a sysctl,
make it read it and use that as the upper limit, falling back to
PERF_MAX_
Allocation of a frame buffer memory in a special memory region
allows bypassing of so-called IO Coherency aperture
which is typically set as a range 0x8z-0xAz.
I.e. all data traffic to PGU bypasses IO Coherency block
and saves its bandwidth for other peripherals.
Even though for AXS101 (which sor
From: Ravi Bangoria
Perf can add a probe on kernel module which has not been loaded yet.
The current implementation finds the module name from path. But if the
filename is different from the actual module name then perf fails to
register a probe while loading module because of mismatch in the na
On Wed, Apr 27, 2016 at 07:31:43AM -0700, Andy Lutomirski wrote:
> On Wed, Apr 27, 2016 at 7:23 AM, Joerg Roedel wrote:
> > On Wed, Apr 27, 2016 at 04:37:04PM +0300, Michael S. Tsirkin wrote:
> >> One correction: it's a feature of the device in the system.
> >> There could be a mix of devices bypa
Now when ARC supports reserved memory areas and
per-device coherent DMA allocations we may switch ARC PGU
to use of those dedicated areas.
One of the benefits we may move frame-buffer area out
from IO Coherency aperture and so significantly
reduce IOC utilization allowing less demanding
peripheral
The EBI (External Bus Interface) is used to access external peripherals
(NOR, SRAM, NAND, and other specific devices like ethernet controllers).
Each device is assigned a CS line and an address range and can have its
own configuration (timings, access mode, bus width, ...).
This driver provides a g
The EBI (External Bus Interface) is used to access external peripherals
(NOR, SRAM, NAND, and other specific devices like ethernet controllers).
Each device is assigned a CS line and an address range and can have its
own configuration (timings, access mode, bus width, ...).
This driver provides a g
The EBI (External Bus Interface) is used to access external peripherals
(NOR, SRAM, NAND, and other specific devices like ethernet controllers).
Each device is assigned a CS line and an address range and can have its
own configuration (timings, access mode, bus width, ...).
This driver provides a g
From: Arnaldo Carvalho de Melo
To read things like /proc/self/comm.
Cc: Adrian Hunter
Cc: Borislav Petkov
Cc: David Ahern
Cc: Jiri Olsa
Cc: Milian Wolff
Cc: Namhyung Kim
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-ztpkbmseidt0hq2psr46o...@git.kernel.org
Signed-off-by: Arnaldo Carvalho
On 18/04/16 10:08, Peter Chen wrote:
> On Tue, Apr 05, 2016 at 05:05:16PM +0300, Roger Quadros wrote:
>> This is the a_set_b_hnp_enable flag in the OTG state machine
>> diagram and must be set when the A-Host has successfully set
>> the b_hnp_enable feature of the OTG-B-Peripheral attached to it.
>
From: Arnaldo Carvalho de Melo
Will be used for lazy comm loading in 'perf trace'.
Cc: Adrian Hunter
Cc: Borislav Petkov
Cc: David Ahern
Cc: Jiri Olsa
Cc: Milian Wolff
Cc: Namhyung Kim
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-7ogbkuoka1y2qsmcckqxv...@git.kernel.org
Signed-off-by: A
On Wed, Apr 27, 2016 at 04:23:32PM +0200, Joerg Roedel wrote:
> On Wed, Apr 27, 2016 at 04:37:04PM +0300, Michael S. Tsirkin wrote:
> > One correction: it's a feature of the device in the system.
> > There could be a mix of devices bypassing and not
> > bypassing the IOMMU.
>
> No, it really is no
This mini-series allows to allocate frame buffer memory in desired
location. Allocation of a frame buffer memory in a special memory region
allows bypassing of so-called IO Coherency aperture which is typically set
as a range 0x8z-0xAz.
I.e. all data traffic to PGU bypasses IO Coherency block
and
From: Colin Ian King
The check for the maximum code is off-by-one; the current comparison of
a code that is INTEL_PT_ERR_MAX will cause the strlcpy to perform an out
of bounds array access on the intel_pt_err_msgs array.
Fix this with a >= comparison.
Signed-off-by: Colin Ian King
Cc: Adrian H
> On 27.04.2016, at 15:26, Matthias Reichl wrote:
>
> dmaengine_pcm currently only supports setups where FIFO reads/writes
> correspond to exactly one sample, eg 16-bit sample data is transferred
> via 16-bit FIFO accesses, 32-bit data via 32-bit accesses.
>
> This patch adds support for setups
:39
+0200)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git
tags/perf-core-for-mingo-20160427
for you to fetch changes up to 4cb93446c587d56e2a54f4f83113daba2c0b6dee:
perf tools: Set the maximum allowed stack from
/proc/
Em Wed, Apr 27, 2016 at 11:11:26AM +0800, Wangnan (F) escreveu:
>
>
> On 2016/4/25 10:34, Florian Fainelli wrote:
> >Assigning "attr" to "attr" does not have any effect, but was caught by
> >Coverity, so let's remove this.
> >
> >Reported-by: coverity (CID 1354720)
> >Fixes: 1b76c13e4b36 ("bpf to
From: Wang Nan
Don't read broken data after 'head' pointer.
Following commits will feed perf_evlist__mmap_read() with some 'head'
pointers not maintained by kernel. If 'head' pointer breaks an event, we
should avoid reading from the broken event. This can happen in backward
ring buffer.
For exa
On Tue, Apr 26, 2016 at 3:56 PM, Tom Lendacky wrote:
> For AMD processors that support PAT, set the write-protect cache mode
> (_PAGE_CACHE_MODE_WP) entry to the actual write-protect value (x05).
What's the purpose of using the WP memory type?
--Andy
On Wed, Apr 27, 2016 at 7:23 AM, Joerg Roedel wrote:
> On Wed, Apr 27, 2016 at 04:37:04PM +0300, Michael S. Tsirkin wrote:
>> One correction: it's a feature of the device in the system.
>> There could be a mix of devices bypassing and not
>> bypassing the IOMMU.
>
> No, it really is not. A device
> On 27.04.2016, at 15:26, Matthias Reichl wrote:
>
> The bcm2835-i2s driver already has support for the S16_LE format but
> that format hasn't been made available because dmaengine_pcm didn't
> support packed data transfers.
>
> bcm2835-i2s needs 16-bit left+right channel data to be packed int
Em Wed, Apr 27, 2016 at 11:01:43AM +0800, Wangnan (F) escreveu:
> On 2016/4/25 10:34, Florian Fainelli wrote:
> >-return syscall(__NR_bpf, BPF_PROG_LOAD, attr, sizeof(attr));
> >+return syscall(__NR_bpf, BPF_PROG_LOAD, &attr, sizeof(attr));
> > }
> Acked-by: Wang Nan
Applied, thanks.
-
From: Arnaldo Carvalho de Melo
The default remains 127, which is good for most cases, and not even hit
most of the time, but then for some cases, as reported by Brendan, 1024+
deep frames are appearing on the radar for things like groovy, ruby.
And in some workloads putting a _lower_ cap on this
On Wed 2016-04-27 16:05:20, Borislav Petkov wrote:
> On Tue, Mar 22, 2016 at 02:00:58PM +0100, Pavel Machek wrote:
> > Why would I want SME on my system? My system seems to work without it.
>
> Your system doesn't have it and SME is default off.
That does not answer the question. "Why would I wan
Hello.
Your commit 15001e5a7e1e207b6bd258cd8f187814cd15b6dc is hang up in my system.
Lock detector said
NMI watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [swapon:933]
Modules linked in:
From: Chris Phlipot
This fixes a bug caused by an unitialized callchain cursor. The crash
frist appeared in:
6f736735e30f ("perf evsel: Require that callchains be resolved before
calling fprintf_{sym,callchain}")
The callchain cursor is a struct that contains pointers, that when
uninitialized w
On Wed, Apr 27, 2016 at 04:58:36PM +0300, Dan Carpenter wrote:
On Wed, Apr 27, 2016 at 09:27:39AM -0400, YU Bo wrote:
Fixed checkpatch.pl's warning 'Comparisons should place the constant on
the right side of the test'
Signed-off-by: YU Bo
---
drivers/staging/xgifb/vb_setmode.c |4 ++--
1
From: Arnaldo Carvalho de Melo
Forgot about page faults, a software event, when adding support for callchains,
fix it:
# trace --no-syscalls --pf maj --call dwarf
0.000 ( 0.000 ms): Xorg/2068 majfault [sfbSegment1+0x0] =>
/usr/lib64/xorg/modules/drivers/intel_drv.so@0x11b490 (x.)
Hi,
On 27-04-16 16:24, Mark Brown wrote:
On Wed, Apr 27, 2016 at 04:03:44PM +0200, Hans de Goede wrote:
So if we want to use these pins as gpio pins we must not register
a regulator for these pins at all, otherwise any gpio use (switching
to input, or writing a value) gets undone when the regu
From: Masami Hiramatsu
As a utility function, add lsdir() which reads given directory and store
entry name into a strlist. lsdir accepts a filter function so that user
can filter out unneeded entries.
Signed-off-by: Masami Hiramatsu
Signed-off-by: Masami Hiramatsu
Cc: Ananth N Mavinakayanahal
On Tue, Apr 12, 2016 at 4:46 PM, Jonathan Corbet wrote:
> On Fri, 8 Apr 2016 17:12:27 +0200
> Markus Heiser wrote:
>
>> motivated by this MT, I implemented a toolchain to migrate the kernel’s
>> DocBook XML documentation to reST markup.
>>
>> It converts 99% of the docs well ... to gain an impres
On Tue, Apr 26, 2016 at 09:39:16PM -0500, Bjorn Helgaas wrote:
> On Fri, Apr 15, 2016 at 07:06:40PM +0200, Tomasz Nowicki wrote:
> > Platforms that have memory mapped IO port (such as ARM64) need special
> > handling for PCI I/O resources. For host bridge's resource probing case
> > these resources
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