On Sat, Aug 10, 2019 at 10:49:55PM -0400, Joel Fernandes (Google) wrote:
> Recently a discussion about stability and performance of a system
> involving a high rate of kfree_rcu() calls surfaced on the list [1]
> which led to another discussion how to prepare for this situation.
>
> This patch add
On Thu, Aug 08, 2019 at 06:04:24PM +0100, Will Deacon wrote:
> On Wed, Aug 07, 2019 at 04:53:20PM +0100, Catalin Marinas wrote:
> > From: Vincenzo Frascino
> >
> > On arm64 the TCR_EL1.TBI0 bit has been always enabled hence
> > the userspace (EL0) is allowed to set a non-zero value in the
> > top
On Tue, Jul 23, 2019 at 09:16:28AM +, Ganapatrao Kulkarni wrote:
> CCPI2 is a low-latency high-bandwidth serial interface for connecting
> ThunderX2 processors. This patch adds support to capture CCPI2 perf events.
It would be worth pointing out in the commit message how the CCPI2
counters dif
On Mon, Aug 12, 2019 at 07:02:56AM +0200, Greg Kroah-Hartman wrote:
> On Sun, Aug 11, 2019 at 06:11:11PM -0400, Joel Fernandes (Google) wrote:
> > Properly check if lockdep lock checking is disabled at config time. If
> > so, then lock_is_held() is undefined so don't do any checking.
> >
> > This
On Mon, Aug 12, 2019 at 07:29:17PM +0900, Byungchul Park wrote:
[snip]
> > diff --git a/include/linux/rcutiny.h b/include/linux/rcutiny.h
> > index 8e727f57d814..383f2481750f 100644
> > --- a/include/linux/rcutiny.h
> > +++ b/include/linux/rcutiny.h
> > @@ -39,6 +39,11 @@ static inline void kfree_c
On Thu, Aug 08, 2019 at 10:00:44AM +0200, Michal Hocko wrote:
> On Wed 07-08-19 17:31:05, Joel Fernandes wrote:
> > On Wed, Aug 07, 2019 at 01:58:40PM -0700, Andrew Morton wrote:
> > > On Wed, 7 Aug 2019 16:45:30 -0400 Joel Fernandes
> > > wrote:
> > >
> > > > On Wed, Aug 07, 2019 at 01:04:02PM
On Fri, Aug 9, 2019 at 9:21 AM Shaun Tancheff wrote:
>
> When building a tree of external modules stage 2 fails
> silently as the root modules.order is empty.
>
> Modify the modules.order location to be fixed to the
> root when KBUILD_EXTMOD is specified and write all
> module paths to the single
In C is a valid construction to have an anonymous enumerator.
Though we have now:
drivers/pinctrl/intel/pinctrl-intel.c:240: error: Cannot parse enum!
Support it in the kernel-doc script.
Signed-off-by: Andy Shevchenko
---
scripts/kernel-doc | 2 +-
1 file changed, 1 insertion(+), 1 deletio
In Python, like in C, when a comma is omitted in a list of strings, the
two strings around the missing comma are concatenated.
Signed-off-by: Jonathan Neuschäfer
---
v2:
- new patch
---
Documentation/sphinx/automarkup.py | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/Docume
With the introduction of Documentation/sphinx/automarkup.py, socket() is
parsed as a reference to the in-kernel definition of socket. Sphinx then
decides that struct socket is a good match, which is usually not
intended, when the syscall is meant instead. This was observed in
Documentation/networki
Em Mon, 12 Aug 2019 18:07:05 +0200
Jonathan Neuschäfer escreveu:
> With the introduction of Documentation/sphinx/automarkup.py, socket() is
> parsed as a reference to the in-kernel definition of socket. Sphinx then
> decides that struct socket is a good match, which is usually not
> intended, whe
On Mon, Aug 12, 2019 at 11:46:06AM +0100, Andrew Murray wrote:
> On Thu, Aug 08, 2019 at 06:04:24PM +0100, Will Deacon wrote:
> > On Wed, Aug 07, 2019 at 04:53:20PM +0100, Catalin Marinas wrote:
> > > +
> > > +- mmap() addr parameter.
> > > +
> > > +- mremap() new_address parameter.
> > > +
> > > +
On Mon, Aug 12, 2019 at 10:24 AM Masahiro Yamada
wrote:
>
> On Fri, Aug 9, 2019 at 9:21 AM Shaun Tancheff wrote:
> >
> > When building a tree of external modules stage 2 fails
> > silently as the root modules.order is empty.
> >
> > Modify the modules.order location to be fixed to the
> > root wh
On Fri, Aug 09, 2019 at 07:10:18AM -0700, Dave Hansen wrote:
> On 8/8/19 10:27 AM, Catalin Marinas wrote:
> > On Wed, Aug 07, 2019 at 01:38:16PM -0700, Dave Hansen wrote:
> >> Also, shouldn't this be converted over to an arch_prctl()?
> >
> > What do you mean by arch_prctl()? We don't have such th
On Mon, 12 Aug 2019 09:03:10 -0400
Joel Fernandes wrote:
> > > drivers/base/core.c | 6 +-
> > > 1 file changed, 5 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/drivers/base/core.c b/drivers/base/core.c
> > > index 32cf83d1c744..fe25cf690562 100644
> > > --- a/drivers/base/core.c
On Wed, Aug 7, 2019 at 7:16 PM Joel Fernandes (Google)
wrote:
> The page_idle tracking feature currently requires looking up the pagemap
> for a process followed by interacting with /sys/kernel/mm/page_idle.
> Looking up PFN from pagemap in Android devices is not supported by
> unprivileged proces
On Fri, Aug 9, 2019 at 5:29 AM Stefan-gabriel Mirea
wrote:
>
> From: Eddy Petrișor
>
> Add entry for the NXP S32V234 Customer Evaluation Board to the board/SoC
> bindings.
>
> Signed-off-by: Eddy Petrișor
> Signed-off-by: Stefan-Gabriel Mirea
> ---
> Documentation/devicetree/bindings/arm/fsl.y
On Mon, Aug 12, 2019 at 12:48:34PM +0800, John Wang wrote:
>
> So I should
>
> 1. Add SENSOR_INSPUR_IPSPS to the end of the file
> 2. Add SENSOR_INSPUR_IPSPS in alphabetical order, without additional tab
> 3. other suggestions
>
I would suggest 2). Just use a space before += instead of a tab.
G
On Mon, Aug 12, 2019 at 02:11:19PM -0400, Steven Rostedt wrote:
> On Mon, 12 Aug 2019 09:03:10 -0400
> Joel Fernandes wrote:
>
>
> > > > drivers/base/core.c | 6 +-
> > > > 1 file changed, 5 insertions(+), 1 deletion(-)
> > > >
> > > > diff --git a/drivers/base/core.c b/drivers/base/core
On Mon, 12 Aug 2019 16:01:25 -0400
Joel Fernandes wrote:
> > some/header/file.h:
> >
> > #ifdef CONFIG_DEBUG_LOCK_ALLOC
> > # define CHECK_DEVICE_LINKS_READ_LOCK_HELD()
> > WARN_ON_ONCE(!defice_links_read_lock_held())
> > #else
> > # define CHECK_DEVICE_LINKS_READ_LOCK_HELD() do { } while (0)
>
On Sun, Aug 11, 2019 at 06:11:10PM -0400, Joel Fernandes (Google) wrote:
> This patch updates the documentation with information about
> usage of lockdep with list_for_each_entry_rcu().
>
> Signed-off-by: Joel Fernandes (Google)
Thank you!!!
I queued this for v5.5 with the following wordsmithin
On Mon, Aug 12, 2019 at 01:22:41PM -0700, Paul E. McKenney wrote:
> On Sun, Aug 11, 2019 at 06:11:10PM -0400, Joel Fernandes (Google) wrote:
> > This patch updates the documentation with information about
> > usage of lockdep with list_for_each_entry_rcu().
> >
> > Signed-off-by: Joel Fernandes (G
On Thu, Aug 1, 2019 at 2:43 PM Brendan Higgins
wrote:
>
> On Thu, Aug 1, 2019 at 2:14 PM Stephen Boyd wrote:
> >
> > Quoting Brendan Higgins (2019-08-01 11:59:57)
> > > On Thu, Aug 1, 2019 at 11:55 AM Brendan Higgins
> > > wrote:
> > > >
> > > > On Fri, Jul 26, 2019 at 1:31 AM Petr Mladek wrote
On Mon, 12 Aug 2019 18:07:04 +0200
Jonathan Neuschäfer wrote:
> In Python, like in C, when a comma is omitted in a list of strings, the
> two strings around the missing comma are concatenated.
>
> Signed-off-by: Jonathan Neuschäfer
> ---
>
> v2:
> - new patch
> ---
> Documentation/sphinx/auto
On Mon, 12 Aug 2019 19:06:31 +0300
Andy Shevchenko wrote:
> In C is a valid construction to have an anonymous enumerator.
>
> Though we have now:
>
> drivers/pinctrl/intel/pinctrl-intel.c:240: error: Cannot parse enum!
>
> Support it in the kernel-doc script.
So I don't get this error; I gu
On Fri, 9 Aug 2019 18:29:07 -0500
Marco Villegas wrote:
> Signed-off-by: Marco Villegas
> ---
> Documentation/maintainer/pull-requests.rst | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/Documentation/maintainer/pull-requests.rst
> b/Documentation/maintainer/pull-req
On Fri, 9 Aug 2019 14:23:49 +0100
Sheriff Esseson wrote:
> Fix broken reference to virt/index.rst.
>
> Fixes: 2f5947dfcaec ("Documentation: move Documentation/virtual to
> Documentation/virt")
>
> Signed-off-by: Sheriff Esseson
Note that you should keep the "Fixes:" tag on a single line, and
On Fri, 9 Aug 2019 20:04:47 +0800
Alex Shi wrote:
> Mauro Carvalho Chehab found a reference
> error in Chinese howto.rst. and further more there more infos of
> latexdocs/epubdocs format doc making in English howto.rst.
>
> So I update this part according to latest howto.rst and settled
> the
On Thu, 8 Aug 2019 18:58:55 +0200
Jonathan Neuschäfer wrote:
> The support for the following boards, among others, was removed in 2004
> with commit "[ARM] Remove broken SA1100 machine support.":
>
> - ADS Bitsy
> - Brutus
> - Freebird
> - ADS GraphicsClient Plus
> - ADS GraphicsMaster
> - Höft
On Mon, Aug 12, 2019 at 04:42:05PM -0400, Joel Fernandes wrote:
> On Mon, Aug 12, 2019 at 01:22:41PM -0700, Paul E. McKenney wrote:
> > On Sun, Aug 11, 2019 at 06:11:10PM -0400, Joel Fernandes (Google) wrote:
> > > This patch updates the documentation with information about
> > > usage of lockdep w
On Thu, 8 Aug 2019 18:58:56 +0200
Jonathan Neuschäfer wrote:
> "make assabet_config" doesn't work.
>
> Signed-off-by: Jonathan Neuschäfer
> ---
> Documentation/arm/sa1100/assabet.rst | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/Documentation/arm/sa1100/assabet.rst
On Thu, 8 Aug 2019 18:48:09 +0200
Jonathan Neuschäfer wrote:
> It seems a UTF-8 byte order mark (the least useful kind of BOM...) snuck
> into the file and broke Sphinx's detection of the title line.
>
> Besides making arm/samsung-s3c24xx/index.html look a little better, this
> patch also confi
Check if lockdep lock checking is disabled. If so, then do not define
device_links_read_lock_held(). It is used only from places where lockdep
checking is enabled.
Also fix a bug where I was not checking dep_map. Previously, I did not
test !SRCU configs so this got missed. Now it is sorted.
Link:
On Tue, Aug 13, 2019 at 2:34 AM Shaun Tancheff wrote:
>
> On Mon, Aug 12, 2019 at 10:24 AM Masahiro Yamada
> wrote:
> >
> > On Fri, Aug 9, 2019 at 9:21 AM Shaun Tancheff wrote:
> > >
> > > When building a tree of external modules stage 2 fails
> > > silently as the root modules.order is empty.
>
On Mon, Aug 12, 2019 at 05:49:17PM -0400, Joel Fernandes (Google) wrote:
> Check if lockdep lock checking is disabled. If so, then do not define
> device_links_read_lock_held(). It is used only from places where lockdep
> checking is enabled.
>
> Also fix a bug where I was not checking dep_map. Pr
KTF has already been available for a while as a separate git repository with
means to facilitate use with any kernel version.
KTF can be used both for "pure" unit testing and for more pragmatic
approaches to component testing. Apart from some useful features that
KTF uses from the kernel toolbox (
An implementation of configurable contexts for exchanging network
information, to make it easier to run network tests potentially
involving more than one kernel.
ktf_netctx.h:Configurable context setup for multinode network tests
Signed-off-by: Knut Omang
---
tools/testing/selftests/ktf/ker
This container is mapping from an index datatype to a "value"
datatatype, using rbtree for the implementation.
This datatype is used for various purposes by ktf to
store and find data related to the actual test cases.
ktf_map.c: Implementation of a kernel version independent std::map like
A
From: Alan Maguire
While test results is available via netlink from user space, sometimes
it may be useful to be able to access the results from the kernel as well,
for instance due to a crash. Make that possible via debugfs.
ktf_debugfs.h: Support for creating a debugfs representation of test
Takes an input file foo.txt with a list of symbols on the form:
#module foo
#header foo.h
private_foo_symbol_1
private_foo_symbol_2
and creates usable definitions to access these (requires CONFIG_KALLSYMS_ALL).
This is useful to be able to easily and cleanly test internal interfaces of a
module.
From: Alan Maguire
Allows reports of code coverage and memory allocation.
ktf_cov.c: Code coverage support implementation for KTF.
ktf_cov.h: Code coverage support interface for KTF.
Signed-off-by: Alan Maguire
Signed-off-by: Knut Omang
---
tools/testing/selftests/ktf/kernel/ktf_
A few simple examples, and example of other test modules
to make it easier to get started with ktf.
Signed-off-by: Knut Omang
---
tools/testing/selftests/ktf/examples/Makefile | 17 -
tools/testing/selftests/ktf/examples/h2.c | 45 +++-
tools/testing/selftests/ktf/examples/h3.c
Signed-off-by: Knut Omang
---
tools/testing/selftests/Makefile | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index 9781ca7..a24c2fe 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -20
The generic netlink protocol used to communicate between
kernel and user space about tests and test results, as well as some
means for configuring tests within the kernel.
Unlike other kernel side test code in the kernel, ktf does not print
anything from inside the kernel (except for optional debu
On 2019/8/12 18:39, Steven Price wrote:
On 09/08/2019 14:51, Zenghui Yu wrote:
[...]
Hi Steven,
Since userspace is not involved yet (right?), no one will create the
PV_TIME device for guest (and no one will specify the IPA of the shared
stolen time region), and I guess we will get a "not suppor
Utilities for convenient and runtime enabled/disabled
printk debugging mainly intended for debugging ktf itself and subtle
early issues with execution/running of tests.
ktf_debug.h: User mode debug function definitions
Signed-off-by: Knut Omang
---
tools/testing/selftests/ktf/lib/ktf_debug.
Signed-off-by: Knut Omang
---
Documentation/dev-tools/ktf/concepts.rst | 242 ++-
Documentation/dev-tools/ktf/debugging.rst | 248 +++-
Documentation/dev-tools/ktf/examples.rst | 26 ++-
Documentation/dev-tools/ktf/features.rst | 307 +++
Signed-off-by: Knut Omang
---
tools/testing/selftests/ktf/Makefile| 21 -
tools/testing/selftests/ktf/scripts/ktf_syms.mk | 16 +++-
tools/testing/selftests/ktf/scripts/runtests.mk | 3 +-
tools/testing/selftests/ktf/scripts/runtests.sh | 100 +-
tools/testing/
context.c: Parameterized context test case, kernel side:
context.h: Parameterized context test case, kernel side.
context_self.h: The data structure passed between user level and kernel for the
hybrid.c:Hybrid (combined user level and kernel) self tests,
hybrid.h:Hybrid
Some minimal user land executables to run tests and to enable/disable
coverage:
ktfrun: Simple generic test runner for generic ktf tests
ktftest:A test runner for the ktf selftests. Contains code to
configure specific selftest context objects.
ktfcov: A util
Implementation of the main part of the user library to communicate
with the kernel side of ktf about tests, configuration and test
results.
ktf.h: User mode side of KTF extensions to the gtest unit test
framework.
ktf_int.cc: Implementation of Gtest user land test management
ktf_int
Signed-off-by: Knut Omang
---
Documentation/dev-tools/index.rst | 1 +
1 file changed, 1 insertion(+)
diff --git a/Documentation/dev-tools/index.rst
b/Documentation/dev-tools/index.rst
index b0522a4..f155205 100644
--- a/Documentation/dev-tools/index.rst
+++ b/Documentation/dev-tools/index.rst
Currently ktf only supports integration with googletest on the user
side, but there's nothing that prevents integration towards other user
land frameworks for running and reporting, if so desired.
Signed-off-by: Knut Omang
---
tools/testing/selftests/ktf/lib/ktf_run.cc | 177
From: Alan Maguire
This is a very powerful and yet simple way to verify or modify
behaviour of kernel calls. It uses the same technique as the error
injection framework in kernel/fail_function.c to to override function
entry and return. In addition to error injection, this is very useful
to for i
C++ libraries interfacing to C APIs might sometimes need some glue
logic more easily written in C.
Allow a C++ library to also contain 0 or more C objects.
Also fix rules for both C and C++ shared libraries:
- C++ shared libraries depended on .c instead of .cc files
- Rules were referenced as -obj
The ktf module itself and basic data structures for management
of test cases and tests and contexts for tests.
Also contains the top level include file for kernel clients
in ktf.h.
More elaborate documentation follows towards the end of the
patch set.
This patch set contains both user level and k
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