From: Richard Fitzgerald
This patch adds all the core support and defines for the Cirrus
Logic CS47L15 smart audio CODEC.
Registers or fields are named MADERA_* if it is part of the
common hardware platform and does not conflict with any other
Madera codecs. It is named CS47L15_* if it is
VESNIN is an OpenPower machine with an Aspeed 2400 BMC SoC manufactured
by YADRO.
Signed-off-by: Alexander Filippov
---
arch/arm/boot/dts/Makefile | 1 +
arch/arm/boot/dts/aspeed-bmc-opp-vesnin.dts | 234
2 files changed, 235 insertions(+)
create mode
From: Richard Fitzgerald
This adds the cs47l15, cs42l92, cs47l92 and cs47l93 to the list of
compatible strings and updates some properties that need to note
the new CODECs.
Signed-off-by: Richard Fitzgerald
Signed-off-by: Charles Keepax
---
Documentation/devicetree/bindings/mfd/madera.txt |
On Thu, May 30, 2019 at 07:23:56AM -0700, Richard Cochran wrote:
> I recommend forgetting about these meta frames. Instead, read out the
> time stamps over MDIO.
Or SPI. It appears you use that for Tx time stamps already.
Thanks,
Richard
On 05/30, Arnd Bergmann wrote:
>
> I think this is a nice simplification, but it would help not to mix up the
> minimal regression fix with the rewrite of those functions.
Yes, yes, agreed.
Plus every file touched by this patch asks for more cleanups. Say, do_poll()
should return
Hello!
This series contains LKMM updates:
1-3.Add plain C-language accesses to the model, including data-race
detection, courtesy of Alan Stern.
4. Make scripts be executable.
5. Explain ordering provided by smp_mb__{before,after}_atomic(),
courtesy of Alan Stern.
From: Alan Stern
This patch makes some slight alterations to linux-kernel.cat in
preparation for adding support for data-race detection to the
Linux-Kernel Memory Model.
The definitions of relations involved in Acquire, Release, and
unlock-lock ordering are moved up earlier in
This commit retains the assembly-language litmus tests generated from
the C-language litmus tests, appending the hardware tag to the original
C-language litmus test's filename. Thus, S+poonceonces.litmus.AArch64
contains the Armv8 assembly language corresponding to the C-language
The checkghlitmus.sh script currently uses grep to ignore non-C-language
litmus tests, which is a bit fragile. This commit therefore enlists the
aid of "mselect7 -arch C", given Luc Maraget's recent modifications that
allow mselect7 to operate in filter mode.
This change requires herdtools
This commit adds a --hw argument to parseargs.sh to specify the CPU
family for a hardware verification. For example, "--hw AArch64" will
specify that a C-language litmus test is to be translated to ARMv8 and
the result verified. This will set the LKMM_HW_MAP_FILE environment
variable
This commit adds a checktheselitmus.sh script that runs the litmus tests
specified on the command line. This is useful for verifying fixes to
specific litmus tests.
Signed-off-by: Paul E. McKenney
---
tools/memory-model/scripts/README | 8
This commit abstracts out common function to check a given litmus test
for locking, RCU, and SRCU in order to avoid duplicating code.
Signed-off-by: Paul E. McKenney
---
tools/memory-model/scripts/simpletest.sh | 35
1 file changed, 35 insertions(+)
create mode 100755
If a litmus test specifies "Result: Never" and if it contains an
unconditional ("hard") deadlock, then running checklitmus.sh on it will
not flag any errors, despite the fact that there are no executions.
This commit therefore updates judgelitmus.sh to complain about tests
with no executions that
It turns out that the jingle7 tool is currently a bit picky about
the litmus tests it is willing to process. This commit therefore
ensures that jingle7 failures are reported.
Signed-off-by: Paul E. McKenney
---
tools/memory-model/scripts/runlitmus.sh | 5 +
1 file changed, 5 insertions(+)
This commit makes checklitmus.sh and checkalllitmus.sh check to see
if a hardware verification was specified (via the --hw command-line
argument, which sets the LKMM_HW_MAP_FILE environment variable).
If so, the C-language litmus test is converted to the specified type
of assembly-language litmus
The history-check scripts currently use grep to ignore non-C-language
litmus tests, which is a bit fragile. This commit therefore enlists the
aid of "mselect7 -arch C", given Luc Maraget's recent modifications that
allow mselect7 to operate in filter mode.
This change requires herdtools
Currently, judgelitmus.sh treats timeouts (as in the "--timeout" argument)
as "!!! Verification error". This can be misleading because it is quite
possible that running the test longer would have produced a verification.
This commit therefore changes judgelitmus.sh to check for timeouts and
to
This commit adds functionality to judgelitmus.sh to allow it to handle
both the "DATARACE" markers in the "Result:" comments in litmus tests
and the "Flag data-race" markers in LKMM output. For C-language tests,
if either marker is present, the other must also be as well, at least for
litmus
In the absence of "Result:" comments, the runlitmus.sh script relies on
litmus.out files from prior LKMM runs. This can be a bit user-hostile,
so this commit makes runlitmus.sh generate any needed .litmus.out files
that don't already exist.
Signed-off-by: Paul E. McKenney
---
This commit simplifies life a bit by making all of the scripts in
tools/memory-model/scripts be executable.
Signed-off-by: Paul E. McKenney
---
tools/memory-model/scripts/checkghlitmus.sh | 0
tools/memory-model/scripts/checklitmushist.sh | 0
tools/memory-model/scripts/cmplitmushist.sh | 0
From: Alan Stern
The description of smp_mb__before_atomic() and smp_mb__after_atomic()
in Documentation/atomic_t.txt is slightly terse and misleading. It
does not clearly state which other instructions are ordered by these
barriers.
This improves the text to make the actual ordering
This commit makes the judgelitmus.sh script check the --hw argument
(AKA the LKMM_HW_MAP_FILE environment variable) and to adjust its
judgment for a run where a C-language litmus test has been translated to
assembly and the assembly version verified. In this case, the assembly
verification output
From: Alan Stern
This patch adds definitions for marked and plain accesses to the
Linux-Kernel Memory Model. It also modifies the definitions of the
existing parts of the model (including the cumul-fence, prop, hb, pb,
and rb relations) so as to make them apply only to marked accesses.
Currently, judgelitmus.sh treats use of unknown primitives (such as
srcu_read_lock() prior to SRCU support) as "!!! Verification error".
This can be misleading because it fails to call out typos and running
a version LKMM on a litmus test requiring a feature not provided by
that version. This
From: Andrea Parri
Use "herd7" in each such reference.
Signed-off-by: Andrea Parri
Cc: Alan Stern
Cc: Will Deacon
Cc: Peter Zijlstra
Cc: Boqun Feng
Cc: Nicholas Piggin
Cc: David Howells
Cc: Jade Alglave
Cc: Luc Maranget
Cc: "Paul E. McKenney"
Cc: Akira Yokosawa
Cc: Daniel Lustig
Signed-off-by: Paul E. McKenney
---
tools/memory-model/scripts/parseargs.sh | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/memory-model/scripts/parseargs.sh
b/tools/memory-model/scripts/parseargs.sh
index 7aa58755adfc..08ded5909860 100755
---
Currently, the scripts specify the CPU's .cat file to herd. But this is
pointless because herd will select a good and sufficient .cat file from
the assembly-language litmus test itself. This commit therefore removes
the -model argument to herd, allowing herd to figure the CPU family out
itself.
This commits enables the "--hw" argument for the checkghlitmus.sh script,
causing it to convert any applicable C-language litmus tests to the
specified flavor of assembly language, to verify these assembly-language
litmus tests, and checking compatibility of the outcomes.
Note that the conversion
When the github scripts see ".litmus.out", they assume that there must be
a corresponding C-language ".litmus" file. Won't they be disappointed
when they instead see nothing, or, worse yet, the corresponding
assembly-language litmus test? This commit therefore swaps the hardware
tag with the
The parseargs.sh regular expression for the --jobs argument incorrectly
requires that the number of jobs be at least 10, that is, have at least
two digits. This commit therefore adjusts this regular expression to
allow single-digit numbers of jobs to be specified.
Signed-off-by: Paul E. McKenney
From: Andrea Parri
The comment should say "Sometimes" for the result.
Signed-off-by: Andrea Parri
Cc: Alan Stern
Cc: Will Deacon
Cc: Peter Zijlstra
Cc: Boqun Feng
Cc: Nicholas Piggin
Cc: David Howells
Cc: Jade Alglave
Cc: Luc Maranget
Cc: "Paul E. McKenney"
Cc: Akira Yokosawa
Cc:
Currently, cmplitmushist.sh treats timeouts (as in the "--timeout"
argument) as "Missing Observation line". This can be misleading because
it is quite possible that running the test longer would have produced
a verification. This commit therefore changes cmplitmushist.sh to check
for timeouts
This commit prepares for adding --hw capability to github litmus-test
scripts by splitting runlitmus.sh (which simply runs the verification)
out of checklitmus.sh (which also judges the results).
Signed-off-by: Paul E. McKenney
---
tools/memory-model/scripts/checklitmus.sh | 57
Adding the -v flag to jingle7 invocations gives much useful information
on why jingle7 didn't like a given litmus test. This commit therefore
adds this flag and saves off any such information into a .err file.
Suggested-by: Luc Maranget
Signed-off-by: Paul E. McKenney
---
The judgelitmus.sh script currently relies solely on the "Result:"
comment in the .litmus file. This is problematic when using the --hw
argument, because it is necessary to check the hardware model against
LKMM even in the absence of "Result:" comments.
This commit therefore modifies
The checkalllitmus.sh runs litmus tests in the litmus-tests directory,
not those in the github archive, so this commit updates the comment to
reflect this reality.
Signed-off-by: Paul E. McKenney
---
tools/memory-model/scripts/checkalllitmus.sh | 4 ++--
1 file changed, 2 insertions(+), 2
Signed-off-by: Paul E. McKenney
---
tools/memory-model/scripts/checkalllitmus.sh | 2 +-
tools/memory-model/scripts/checklitmus.sh | 2 +-
tools/memory-model/scripts/checklitmushist.sh | 2 +-
tools/memory-model/scripts/judgelitmus.sh | 2 +-
tools/memory-model/scripts/newlitmushist.sh
From: Alan Stern
This patch adds data-race detection to the Linux-Kernel Memory Model.
As part of this effort, support is added for:
compiler barriers (the barrier() function), and
a new Preserved Program Order term: (addr ; [Plain] ; wmb)
Data races are marked with a special
Currently, parseargs.sh expects to consume all the command-line arguments,
which prevents the calling script from having any of its own arguments.
This commit therefore causes parseargs.sh to stop consuming arguments
when it encounters a "--" argument, leaving any remaining arguments for
the
On Thu, 30 May 2019 at 17:24, Richard Cochran wrote:
>
> On Thu, May 30, 2019 at 10:42:41AM +0300, Vladimir Oltean wrote:
> > The meta frames generated by the SJA1105 do not contain any seqid.
>
> So this cannot ever work...
>
> > They contain:
> > * A globally programmable DMAC
> > * A globally
Hello!
This series provides yet more cleanups and fixes for the RCU flavor
consolidation effort:
1. Enable elimination of Tree-RCU softirq processing, courtesy of
Sebastian Andrzej Siewior. (More along the lines of real-time
than consolidation, but placed here to avoid
This commit saves a few lines of code by inlining invoke_rcu_callbacks()
into its sole remaining caller.
Signed-off-by: Paul E. McKenney
---
kernel/rcu/tree.c | 20 +++-
1 file changed, 3 insertions(+), 17 deletions(-)
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index
When rcu_read_unlock_special() is invoked with interrupts disabled, is
either not in an interrupt handler or is not using RCU_SOFTIRQ, is not
the first RCU read-side critical section in the chain, and either there
is an expedited grace period in flight or this is a NO_HZ_FULL kernel,
the end of
When running in an interrupt handler, raise_softirq() and
raise_softirq_irqoff() have extremely low overhead: They simply set a
bit in a per-CPU mask, which is checked upon exit from that interrupt
handler. Therefore, if rcu_read_unlock_special() is invoked within an
interrupt handler and
From: Sebastian Andrzej Siewior
Some workloads need to change kthread priority for RCU core processing
without affecting other softirq work. This commit therefore introduces
the rcutree.use_softirq kernel boot parameter, which moves the RCU core
work from softirq to a per-CPU SCHED_OTHER
Currently, rcu_read_unlock_special() will do wakeups whenever it is safe
to do so. However, wakeups are expensive, and they are only really
needed when the just-ended RCU read-side critical section is blocking
an expedited grace period (in which case speed is of the essence)
or on a nohz_full CPU
Although sync_rcu_exp_select_node_cpus() treats the current CPU as being
in a quiescent state, it might well migrate to some other CPU before
reaching the smp_call_function_single(), which could then result in an
unnecessary simulated self-IPI. This commit therefore instead simply
refuses to
From: "Joel Fernandes (Google)"
It would be good to combine the dynticks and dynticks_nesting counters
in order to simplify the code. Unfortunately, there are concerns
about usermode upcalls appearing to RCU as half of an interrupt, as
Byungchul learned [1]. The "half" in "half interrupt" is
Hi Greg,
Please take this FPGA fix. It have been reviewed on
the mailing list and applies cleanly on current
linux-next and char-misc-testing.
Thanks,
Alan
Moritz Fischer (1):
fpga: zynqmp-fpga: Correctly handle error pointer
drivers/fpga/zynqmp-fpga.c | 4 ++--
1 file changed, 2
From: Moritz Fischer
Fixes the following static checker errors:
drivers/fpga/zynqmp-fpga.c:50 zynqmp_fpga_ops_write()
error: 'eemi_ops' dereferencing possible ERR_PTR()
drivers/fpga/zynqmp-fpga.c:84 zynqmp_fpga_ops_state()
error: 'eemi_ops' dereferencing possible ERR_PTR()
Note: This does not
When RCU core processing is offloaded from RCU_SOFTIRQ to the rcuc
kthreads, a full and unconditional wakeup is required to initiate RCU
core processing. In contrast, when RCU core processing is carried
out by RCU_SOFTIRQ, a raise_softirq() suffices. Of course, there are
situations where
The rcu_data structure's ->deferred_qs field is used to indicate that the
current CPU is blocking an expedited grace period (perhaps a future one).
Given that it is used only for expedited grace periods, its current name
is misleading, so this commit renames it to ->exp_deferred_qs.
The sync_sched_exp_online_cleanup() is invoked at online time to handle
the case where the start of an expedited grace period ran concurrently
with a CPU being taken offline and then immediately being placed online.
It checks to see if RCU needs an expedited quiescent state from the
incoming CPU,
From: "Joel Fernandes (Google)"
In rcu_rrupt_from_idle, we want to check if it is called from within an
interrupt, but want to do such checking only for debug builds. lockdep
already tracks when we enter an interrupt. Let us expose it as an
assertion macro so it can be used to assert this.
From: Jiang Biao
Because rdp is initialized but never used in synchronize_rcu_expedited(),
this commit removes it.
Signed-off-by: Jiang Biao
Signed-off-by: Paul E. McKenney
---
kernel/rcu/tree_exp.h | 2 --
1 file changed, 2 deletions(-)
diff --git a/kernel/rcu/tree_exp.h
From: Kan Liang
It is useful to aggregate counts per die. E.g. Uncore becomes die-scope
on Xeon Cascade Lake-AP.
Introduce a new option "--per-die" to support per-die aggregation.
The global id for each core has been changed to socket + die id + core
id. The global id for each die is socket +
From: Kan Liang
The "sibling cores" actually shows the sibling CPUs of a socket.
The name "sibling cores" is very misleading.
Rename "sibling cores" to "sibling sockets"
Signed-off-by: Kan Liang
---
No changes since V1
tools/perf/Documentation/perf.data-file-format.txt | 2 +-
From: Kan Liang
The existing "thread_siblings" and "thread_siblings_list" attribute will
be deprecated.
Use the new CPU topology sysfs attributes, "core_cpus" and
"core_cpus_list", which are synonymous with the deprecated attributes.
Check the new name first. If not available, use the
On Fri, May 24, 2019 at 10:17:28AM +0800, Ley Foon Tan wrote:
> On Fri, May 24, 2019 at 10:15 AM Ley Foon Tan wrote:
> >
> > Fix compilation warning caused by patch "PCI: altera: Allow building as
> > module".
> >
> > drivers/pci/controller/pcie-altera.c: In function
> >
From: Kan Liang
With the new CPUID.1F, a new level type of CPU topology, 'die', is
introduced. The 'die' information in CPU topology should be added in
perf header.
To be compatible with old perf.data, the patch checks the section size
before reading the die information. The new info is added
Hello!
This series provides a couple of documentation updates:
1. Document real world rcuref examples from the Linux kernel,
courtesy of Joel Fernandes.
2. Fixup definition of rcupdate.rcu_task_stall_timeout, courtesy
of Zhenzhong Duan.
From: Kan Liang
There is no function to retrieve die id information of a given CPU.
Add cpu_map__get_die_id() to retrieve die id information.
Signed-off-by: Kan Liang
---
New patch for V2.
tools/perf/util/cpumap.c | 7 +++
tools/perf/util/cpumap.h | 1 +
2 files changed, 8
From: Zhenzhong Duan
A positive value of rcupdate.rcu_task_stall_timeout is an interval
in seconds rather than jiffies.
Signed-off-by: Zhenzhong Duan
Signed-off-by: Paul E. McKenney
---
Documentation/RCU/stallwarn.txt | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git
From: "Joel Fernandes (Google)"
Document similar real world examples in the kernel corresponding to the
second and third code snippets. Also correct an issue in
release_referenced() in the code snippet example.
Cc: o...@redhat.com
Cc: ja...@google.com
Signed-off-by: Joel Fernandes (Google)
[
Hello Clément,
On Tue, May 28, 2019 at 06:14:38PM +0200, Clément Péron wrote:
> Allwinner H6 IR is similar to A31 and can use same driver.
>
> Add support for it.
>
> Signed-off-by: Clément Péron
> ---
> arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi | 19 +++
> 1 file changed,
On Thu, 30 May 2019 at 17:30, Richard Cochran wrote:
>
> On Thu, May 30, 2019 at 12:01:23PM +0300, Vladimir Oltean wrote:
> > In fact that's why it doesn't work: because linuxptp adds ptp_dst_mac
> > (01-1B-19-00-00-00) and (01-80-C2-00-00-0E) to the MAC's multicast
> > filter, but the switch in
Hello!
This series provides miscellaneous fixes:
1. Dump specified number of blocked tasks rather than rely on
serendipity, courtesy of Neeraj Upadhyay.
2. Correctly unlock root node in rcu_check_gp_start_stall(),
courtesy of Neeraj Upadhyay.
3. Make kfree_rcu()
From: Neeraj Upadhyay
On systems whose rcu_node tree has only one node, the
rcu_check_gp_start_stall() function's values of rnp and rnp_root will
be identical. In this case, it clearly does not make sense to release
both rnp->lock and rnp_root->lock, but that is exactly what this function
does
The sync_exp_work_done() function uses smp_mb__before_atomic(), but
there is no obvious atomic in the ensuing code. The ordering is
absolutely required for grace periods to work correctly, so this
commit upgrades the smp_mb__before_atomic() to smp_mb().
Reported-by: Andrea Parri
Signed-off-by:
From: Andrea Parri
Quoting Paul [1]:
"Given that a quick (and perhaps error-prone) search of the uses
of rcu_assign_pointer() in v5.1 didn't find a single use of the
return value, let's please instead change the documentation and
implementation to eliminate the return value."
[1]
Signed-off-by: Paul E. McKenney
---
Documentation/core-api/circular-buffers.rst | 2 +-
Documentation/memory-barriers.txt| 2 +-
Documentation/translations/ko_KR/memory-barriers.txt | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
diff --git
This commit makes the kfree_rcu() macro's semantics be consistent
with the likes of kfree() by adding a check for NULL pointers, so
that kfree_rcu(NULL, ...) is a no-op.
Reported-by: Andriy Shevchenko
Reported-by: Christoph Hellwig
Signed-off-by: Paul E. McKenney
Reviewed-by: Andriy Shevchenko
Signed-off-by: Paul E. McKenney
---
include/linux/rcupdate.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 915460ec0872..534c05d529b5 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -369,7
Currently, if a CPU has more than 10,000 callbacks pending, it will
increase rdp->blimit to LONG_MAX. If you are lucky, LONG_MAX is only
about two billion, but this is still a bit too many callbacks to invoke
back-to-back while otherwise ignoring the world.
This commit therefore sets a maximum
Hi all,
Friendly ping:
Who can take this?
On 2019/4/24 10:17, Yue Haibing wrote:
> From: YueHaibing
>
> rtas_parse_epow_errlog() should pass 'modifier' to
> handle_system_shutdown, because event modifier only use
> bottom 4 bits.
>
> Fixes: 55fc0c561742 ("powerpc/pseries: Parse and handle
From: Neeraj Upadhyay
The dump_blkd_tasks() function dumps at most 10 blocked tasks, ignoring
the value of the ncheck parameter. This commit therefore substitutes
the value of ncheck for the hard-coded value of 10. Because all callers
currently pass 10 as the number, this patch does not change
From: Waiman Long
When debugging options are turned on, the rcu_read_lock() function
might not be inlined. This results in lockdep's print_lock() function
printing "rcu_read_lock+0x0/0x70" instead of rcu_read_lock()'s caller.
For example:
[ 10.579995] =
[
On Thu, May 30, 2019 at 05:47:55PM +0300, Vladimir Oltean wrote:
> Yes, they don't identify the original frame.
> The hardware's line of thinking seems to be "The meta frame is sent
> immediately after the trapped frame that triggered the action." (quote
> from
Hello!
This series provides SRCU updates:
1. Allocate per-CPU data for DEFINE_SRCU() in modules.
2. Remove unused vmlinux srcu linker entries, courtesy of Joel Fernandes.
3. Make srcu_struct ptr array as read-only, courtesy of Joel Fernandes.
4. Make __call_srcu static,
On 5/30/19 10:31 AM, Andy Lutomirski wrote:
Hi all-
After an offline discussion with Sean yesterday, here are some updates
to the user API parts of my proposal.
Unfortunately, Sean convinced me that MAXPERM doesn't work the way I
described it because, for SGX2, the enclave loader won't know at
From: "Joel Fernandes (Google)"
The SRCU for modules optimization (commit title "srcu: Allocate per-CPU
data for DEFINE_SRCU() in modules") introduced vmlinux linker entries
which is unused since it applies only to the built-in vmlinux. So remove
it to prevent any space usage due to the 8 byte
From: Jiang Biao
Because __call_srcu() is not used outside kernel/rcu/srcutree.c,
this commit makes it static.
Signed-off-by: Jiang Biao
Signed-off-by: Paul E. McKenney
---
kernel/rcu/srcutree.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/rcu/srcutree.c
On Thu, 30 May 2019 at 16:34, Herbert Xu wrote:
>
> On Thu, May 30, 2019 at 04:31:09PM +0200, Ard Biesheuvel wrote:
> >
> > This might work:
>
> Looks good to me.
>
Thanks Herbert,
But given your remark regarding CBC being the only algo that has this
requirement, I wonder if this might be
On Thu, May 30, 2019 at 05:57:30PM +0300, Vladimir Oltean wrote:
> On Thu, 30 May 2019 at 17:30, Richard Cochran
> wrote:
> >
> > Not necessarily. If two frames that arrive at nearly the same time
> > get their timestamps mixed up, that would be enough to break the time
> > values but without
Adding DEFINE_SRCU() or DEFINE_STATIC_SRCU() to a loadable module requires
that the size of the reserved region be increased, which is not something
we want to be doing all that often. One approach would be to require
that loadable modules define an srcu_struct and invoke init_srcu_struct()
from
From: "Joel Fernandes (Google)"
Since commit title ("srcu: Allocate per-CPU data for DEFINE_SRCU() in
modules"), modules that call DEFINE_{STATIC,}SRCU will have a new array
of srcu_struct pointers, which is used by srcu code to initialize and
clean up these structures and save valuable per-cpu
Without optimization, both save_stack_trace_tsk and __save_stack_trace
will have stacktrace information in ARM32.
In this situation, "data.skip += 2" operation will skip the first two layers,
which may make the stacktrace strange and different from other architectures.
A simple example is as
On Tue, May 14, 2019 at 01:35:05PM +0800, Ley Foon Tan wrote:
> On Wed, Apr 24, 2019 at 12:57 PM Ley Foon Tan wrote:
> >
> > Altera PCIe Rootport IP is a soft IP and is only available after
> > FPGA image is programmed.
> >
> > Make driver modulable to support use case FPGA image is programmed
>
Hello!
This series contains flavor-consolidation updates to RCU-sync:
1. Kill rcu_sync_type/gp_type, courtesy of Oleg Nesterov.
2. Use DEFINE_STATIC_PERCPU_RWSEM() to initialize dup_mmap_sem in
uprobes, courtesy of Oleg Nesterov.
3. Add DEFINE_PERCPU_RWSEM(), use it to
Em Thu, 30 May 2019 08:54:04 -0600
Jonathan Corbet escreveu:
> On Wed, 29 May 2019 22:53:05 -0300
> Mauro Carvalho Chehab wrote:
>
> > > Yup. The point is that I see the sphinx-build output *in the docs-build
> > > output", not when I run it standalone (where it does the expected thing).
> >
From: Oleg Nesterov
With this patch rcu_sync has a single state variable and the transition rules
become really simple:
GP_IDLE - owned by the first rcu_sync_enter() which moves it to
GP_ENTER - owned by rcu-callback which moves it to
GP_PASSED - owned by the last
On Wed, Apr 24, 2019 at 12:57:15PM +0800, Ley Foon Tan wrote:
> Altera MSI IP is a soft IP and is only available after
> FPGA image is programmed.
>
> Make driver modulable to support use case FPGA image is programmed
> after kernel is booted. User proram FPGA image in kernel then only load
> MSI
From: Oleg Nesterov
Use DEFINE_STATIC_PERCPU_RWSEM() to initialize dup_mmap_sem.
Signed-off-by: Oleg Nesterov
Reviewed-by: Ingo Molnar
Signed-off-by: Paul E. McKenney
---
kernel/events/uprobes.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/kernel/events/uprobes.c
From: Oleg Nesterov
Turn DEFINE_STATIC_PERCPU_RWSEM() into __DEFINE_PERCPU_RWSEM() with the
additional "is_static" argument to introduce DEFINE_PERCPU_RWSEM().
Change cgroup.c to use DEFINE_PERCPU_RWSEM(cgroup_threadgroup_rwsem).
Signed-off-by: Oleg Nesterov
Reviewed-by: Ingo Molnar
From: Oleg Nesterov
Now that the RCU flavors have been consolidated, rcu_sync_type makes no
sense because none of internal update functions aside from .held() depend
on gp_type. This commit therefore removes this field and consolidates
the relevant code.
Signed-off-by: Oleg Nesterov
[
Update the documentation to reflect the new naming scheme with
latest changes.
Reported-by: Leo Yan
Cc: Mathieu Poirier
Cc: Jonathan Corbet
Signed-off-by: Suzuki K Poulose
---
Documentation/trace/coresight.txt | 34 +++---
1 file changed, 19 insertions(+), 15
Hi Anshuman,
>From reviwing the below, I can see some major issues that need to be
addressed, which I've commented on below.
Andrew, please do not pick up this patch.
On Wed, May 29, 2019 at 02:46:27PM +0530, Anshuman Khandual wrote:
> The arch code for hot-remove must tear down portions of the
Friendly ping...
On 2019/4/18 21:36, Yue Haibing wrote:
> From: YueHaibing
>
> Fix sparse warning:
>
> drivers/phy/ti/phy-am654-serdes.c:250:12: warning:
> symbol 'serdes_am654_xlate' was not declared. Should it be static?
>
> Reported-by: Hulk Robot
> Signed-off-by: YueHaibing
> ---
>
On Thu, May 30, 2019 at 4:52 AM Ondrej Mosnacek wrote:
>
> On Thu, May 30, 2019 at 10:51 AM Gen Zhang wrote:
> > In selinux_sb_eat_lsm_opts(), 'arg' is allocated by kmemdup_nul(). It
> > returns NULL when fails. So 'arg' should be checked.
> >
> > Signed-off-by: Gen Zhang
> > Fixes:
On Thu, May 30, 2019 at 10:20:11AM -0400, Neil Horman wrote:
> On Wed, May 29, 2019 at 08:37:57PM -0300, Marcelo Ricardo Leitner wrote:
> > On Wed, May 29, 2019 at 03:07:09PM -0400, Neil Horman wrote:
> > > --- a/net/sctp/sm_make_chunk.c
> > > +++ b/net/sctp/sm_make_chunk.c
> > > @@ -2419,9
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