While at it, replace group_smaller_{min, max}_cpu_capacity() with
comparisons of the source group's min/max capacity and the destination
CPU's capacity.
Reviewed-by: Qais Yousef
Signed-off-by: Valentin Schneider
---
kernel/sched/fair.c | 33 -
1 file changed, 4 i
During load-balance, groups classified as group_misfit_task are filtered
out if they do not pass
group_smaller_max_cpu_capacity(, );
which itself employs fits_capacity() to compare the sgc->max_capacity of
both groups.
Due to the underlying margin, fits_capacity(X, 1024) will return false for
Consider the following topology:
DIE [ ]
MC [][]
0 1 2 3
capacity_orig_of(x \in {0-1}) < capacity_orig_of(x \in {2-3})
w/ CPUs 2-3 idle and CPUs 0-1 running CPU hogs (util_avg=1024).
When CPU2 goes through load_balance() (via periodic / NOHZ balance), it
should
When triggering an active load balance, sd->nr_balance_failed is set to
such a value that any further can_migrate_task() using said sd will ignore
the output of task_hot().
This behaviour makes sense, as active load balance intentionally preempts a
rq's running task to migrate it right away, but t
Consider the following (hypothetical) asymmetric CPU capacity topology,
with some amount of capacity pressure (RT | DL | IRQ | thermal):
DIE [ ]
MC [][]
0 1 2 3
| CPU | capacity_orig | capacity |
|-+---+--|
| 0 | 870 |
Rik noted a while back that a handful of
sd->flags & SD_ASYM_CPUCAPACITY
& family in the CFS load-balancer code aren't guarded by the
sched_asym_cpucapacity static branch.
Turning those checks into NOPs for those who don't need it is fairly
straightforward, and hiding it in a helper doesn't ch
11.03.2021 01:17, Nicolin Chen пишет:
> On Wed, Mar 10, 2021 at 11:22:57PM +0300, Dmitry Osipenko wrote:
>> 10.03.2021 22:13, Dmitry Osipenko пишет:
>>> I found that this patch introduced a serious regression on Tegra30 using
>>> today's linux-next. Tegra30 has two 3d h/w blocks connected in SLI an
Switch and case have been aligned together, extra tab removed
Removed extra space before tab.
Signed-off-by: Shubhankar Kuranagatti
---
init/do_mounts.c | 13 ++---
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/init/do_mounts.c b/init/do_mounts.c
index a78e44ee6adb..82fe6
On 3/11/2021 1:37 PM, Christoph Hellwig wrote:
On Wed, Mar 10, 2021 at 08:31:27AM -0400, Jason Gunthorpe wrote:
Yes, that needs more refactoring. I'm viewing this series as a
"statement of intent" and once we commit to doing this we can go
through the bigger effort to split up vfio_pci_core an
On Thu, Mar 11, 2021 at 8:21 AM Calvin Johnson
wrote:
>
> Introduce fwnode_mdiobus_register_phy() to register PHYs on the
> mdiobus. From the compatible string, identify whether the PHY is
> c45 and based on this create a PHY device instance which is
> registered on the mdiobus.
> uninitialized s
Le jeu. 11 mars 2021 à 10:27, Hillf Danton a écrit
:
On Wed, 10 Mar 2021 19:01:01 + Paul Cercueil wrote:
Le lun. 8 mars 2021 11:47, Hillf Danton a crit :
On Sun, 7 Mar 2021 20:28:35 + Paul Cercueil wrote:
With the module parameter ingenic-drm.cached_gem_buffers, it is
poss
On Thu, Mar 11, 2021 at 8:22 AM Calvin Johnson
wrote:
>
> Introduce a wrapper around the _ADR evaluation.
Reviewed-by: Andy Shevchenko
> Signed-off-by: Calvin Johnson
> ---
>
> Changes in v7: None
> Changes in v6: None
> Changes in v5:
> - Replace fwnode_get_id() with acpi_get_local_address()
On 11/03/2021 18.12, Arnd Bergmann wrote:
On Wed, Mar 10, 2021 at 6:01 PM Rob Herring wrote:
On Wed, Mar 10, 2021 at 1:27 AM Hector Martin wrote:
On 10/03/2021 07.06, Rob Herring wrote:
My main concern here is that this creates an inconsistency in the device
tree representation that only w
From: Yanfei Xu
bd_size_lock spinlock could be taken in block softirq, thus we should
disable the softirq before taking the lock.
WARNING: inconsistent lock state
5.12.0-rc2-syzkaller #0 Not tainted
inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-R} usage.
kworker/u4:
platform_get_irq() has already checked and printed the return value,
the printing here is nothing special, it is not necessary at all.
Signed-off-by: Wang Qing
---
drivers/video/fbdev/pxa168fb.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/video/fbdev/pxa168fb.
platform_get_irq() has already checked and printed the return value,
the printing here is nothing special, it is not necessary at all.
Signed-off-by: Wang Qing
---
drivers/video/fbdev/pxa3xx-gcu.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/video/fbdev/pxa3xx-
platform_get_irq() has already checked and printed the return value,
the printing here is nothing special, it is not necessary at all.
Signed-off-by: Wang Qing
---
drivers/video/fbdev/pxafb.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/video/fbdev/pxafb.c b/dr
platform_get_irq() has already checked and printed the return value,
the printing here is nothing special, it is not necessary at all.
Signed-off-by: Wang Qing
---
drivers/video/fbdev/s3c2410fb.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/video/fbdev/s3c2410f
platform_get_irq() has already checked and printed the return value,
the printing here is nothing special, it is not necessary at all.
Signed-off-by: Wang Qing
---
drivers/video/fbdev/vt8500lcdfb.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/video/fbdev/vt8500lcdfb.c
b/drivers/v
On Thu, Mar 11, 2021 at 8:22 AM Calvin Johnson
wrote:
>
> Define acpi_mdiobus_register() to Register mii_bus and create PHYs for
> each ACPI child node.
>
> Signed-off-by: Calvin Johnson
> ---
>
> Changes in v7:
> - Include headers directly used in acpi_mdio.c
>
> Changes in v6:
> - use GENMASK()
On Thu 11-03-21 18:00:09, Muchun Song wrote:
[...]
> Sorry. I am confused why you disagree with this change.
> It does not bring any disadvantages.
Because it is adding a code which is not really necessary and which will
have to be maintained. Think of future changes which would need to grow
more
On Wed, Mar 10, 2021 at 08:37:52AM -0800, kan.li...@linux.intel.com wrote:
> @@ -2092,9 +2105,37 @@ static int __init init_hw_perf_events(void)
> if (err)
> goto out1;
>
> - err = perf_pmu_register(&pmu, "cpu", PERF_TYPE_RAW);
> - if (err)
> - goto out2;
>
On Thu 11-03-21 09:40:57, Michal Hocko wrote:
> On Wed 10-03-21 15:28:51, Paul E. McKenney wrote:
> > On Wed, Mar 10, 2021 at 02:10:12PM -0800, Mike Kravetz wrote:
> > > On 3/10/21 1:49 PM, Paul E. McKenney wrote:
> > > > On Wed, Mar 10, 2021 at 10:11:22PM +0100, Michal Hocko wrote:
> > > >> On Wed
Three optional parameters at once using dm verity table is not
supported, option can only be used exclusively.
e.g.)
(verity_mode) (ignore_zero_block) (check_at_most_once)
verity table: '1 /dev/sdb /dev/sdb 4096 4096 1028807 1028807
11 use_fec_from_device /dev/sdb
fec_roots 2 fec_blocks 103
If there are multiple verity mode when parsing the verity mode of dm
verity table, it will be set as the last one.
So set to 'allow only once' to prevent it.
Signed-off-by: JeongHyeon Lee
---
drivers/md/dm-verity-target.c | 38 ++-
1 file changed, 28 insertions(+)
Partitions that contains the nvmem-cells compatible will register
their direct subonodes as nvmem cells and the node will be treated as a
nvmem provider.
Signed-off-by: Ansuel Smith
---
drivers/mtd/mtdcore.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/mtd/mtdcor
Add compatible for sc7280 SoC
Signed-off-by: Rajendra Nayak
Reviewed-by: Stephen Boyd
Acked-by: Rob Herring
---
Documentation/devicetree/bindings/firmware/qcom,scm.txt | 1 +
1 file changed, 1 insertion(+)
diff --git a/Documentation/devicetree/bindings/firmware/qcom,scm.txt
b/Documentation/d
On Thu, Mar 11, 2021 at 07:48:25AM +, chenjun (AM) wrote:
> static int dax_writeback_one(struct xa_state *xas, struct dax_device
> *dax_dev, struct address_space *mapping, void *entry)
> dax_flush(dax_dev, page_address(pfn_to_page(pfn)), count * PAGE_SIZE);
> The pfn is returned by the dri
On Wed, Mar 10, 2021 at 08:37:52AM -0800, kan.li...@linux.intel.com wrote:
> @@ -4420,6 +4513,27 @@ void intel_cpuc_finish(struct cpu_hw_events *cpuc)
> static void intel_pmu_cpu_dead(int cpu)
> {
> intel_cpuc_finish(&per_cpu(cpu_hw_events, cpu));
> +
> + if (is_hybrid()) {
> +
Drop $nodename restriction as now mtd partition can also be used as
nvmem provider.
Signed-off-by: Ansuel Smith
---
Documentation/devicetree/bindings/nvmem/nvmem.yaml | 3 ---
1 file changed, 3 deletions(-)
diff --git a/Documentation/devicetree/bindings/nvmem/nvmem.yaml
b/Documentation/devicet
Document nvmem-cells compatible used to treat mtd partitions as a
nvmem provider.
Signed-off-by: Ansuel Smith
---
.../bindings/mtd/partitions/nvmem-cells.yaml | 99 +++
1 file changed, 99 insertions(+)
create mode 100644
Documentation/devicetree/bindings/mtd/partitions/nvmem-c
The driver does not support it.
Fixes v4l2-compliance:
Buffer ioctls (Input 0):
fail: v4l2-test-buffers.cpp(1925): ret != EINVAL && ret !=
EBADR && ret != ENOTTY
test Requests: FAIL
Signed-off-by: Ricardo Ribalda
---
drivers/media/usb/uvc/uvc_v4l2.c | 3 +++
1 file cha
Fixes v4l2-compliance:
Control ioctls (Input 0):
fail: v4l2-test-controls.cpp(448): s_ctrl returned an error (22)
test VIDIOC_G/S_CTRL: FAIL
fail: v4l2-test-controls.cpp(698): s_ext_ctrls returned an
error (22)
test VIDIOC_G/S/TRY_EXT_CTRLS: FAIL
S
The plane size needs to be PAGE_ALIGNED, so it is not possible to have
sizes bigger than MAX_INT - PAGE_SIZE.
We already check for overflows when that happen:
if (size < vb->planes[plane].length)
goto free;
But it is good to explicitly state our max allowed value, in order to
align with
Fixes v4l2-compliance:
Format ioctls (Input 0):
warn: v4l2-test-formats.cpp(1339): S_PARM is supported but
doesn't report V4L2_CAP_TIMEPERFRAME
fail: v4l2-test-formats.cpp(1241): node->has_frmintervals &&
!cap->capability
Signed-off-by: Ricardo Ribalda
---
driv
Add new bindings for class controls. This controls will be implemented
by a virtual entity.
Signed-off-by: Ricardo Ribalda
---
drivers/media/usb/uvc/uvc_ctrl.c | 34
drivers/media/usb/uvc/uvcvideo.h | 8
2 files changed, 42 insertions(+)
diff --git a/d
Create a virtual entity that holds all the class control.
Fixes v4l2-compliance:
Control ioctls (Input 0):
fail: v4l2-test-controls.cpp(216): missing control class for
class 0098
fail: v4l2-test-controls.cpp(253): missing control class for
class 009a
Do not create Control Classes for empty classes.
Fixes v4l2-compliance:
Control ioctls (Input 0):
fail: v4l2-test-controls.cpp(255): no controls in class
009d
test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: FAIL
Signed-off-by: Ricardo Ribalda
---
drivers/media/usb/uv
V4L2_CTRL_TYPE_CTRL_CLASS do not generate events.
Fixes v4l2-compliance:
Control ioctls (Input 0):
fail: v4l2-test-controls.cpp(844): found event for control
class 'User Controls'
test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: FAIL
Signed-off-by: Ricardo Ribalda
---
drivers/m
Current version of the driver fails to pass v4l2-compliance v1.20.0,
lets patch it it so some million cameras are compliant.
Ricardo Ribalda (10):
media: uvcvideo: Return -EINVAL for REQUEST API
media: uvcvideo: Set capability in s_param
media: uvcvideo: Return -EIO for control errors
medi
According to the doc:
The, in hindsight quite poor, solution for that is to set error_idx to
count if the validation failed.
Fixes v4l2-compliance:
Control ioctls (Input 0):
fail: v4l2-test-controls.cpp(645): invalid error index write
only control
test VIDIOC_G/S/TRY_EXT_C
Fixes v4l2-compliance:
Control ioctls (Input 0):
fail: v4l2-test-controls.cpp(813): doioctl(node,
VIDIOC_G_EXT_CTRLS, &ctrls)
test VIDIOC_G/S/TRY_EXT_CTRLS: FAIL
Signed-off-by: Ricardo Ribalda
---
drivers/media/usb/uvc/uvc_v4l2.c | 7 +--
1 file changed, 1 insertion(
Fill all the fields for V4L2_CTRL_TYPE_CTRL_CLASS control types.
Signed-off-by: Ricardo Ribalda
---
drivers/media/usb/uvc/uvc_ctrl.c | 7 +++
1 file changed, 7 insertions(+)
diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index b3dde98499f4..08877897dc5a 100
Resending. The original post is [1].
I dug deep into the softlockup watchdog history when time permitted
this year. And reworked the patchset that fixed timestamps and
cleaned up the code[2].
I split it into very small steps and did even more code clean up.
The result looks quite strightforward a
The softlockup detector currently shows the time spent since the last
report. As a result it is not clear whether a CPU is infinitely hogged
by a single task or if it is a repeated event.
The situation can be simulated with a simply busy loop:
while (true)
cpu_relax();
The
The commit d6ad3e286d2c075 ("softlockup: Add sched_clock_tick() to avoid
kernel warning on kgdb resume") introduced touch_softlockup_watchdog_sync().
It solved a problem when the watchdog was touched in an atomic context,
the timer callback was proceed right after releasing interrupts,
and the loc
Any parallel softlockup reports are skipped when one CPU is already
printing backtraces from all CPUs.
The exclusive rights are synchronized using one bit in
soft_lockup_nmi_warn. There is also one memory barrier that
does not make much sense.
Use two barriers on the right location to prevent mix
Trigger busy loop by:
$> cat /proc/version
Stop the busy loop by:
$> cat /proc/consoles
The code also shows the first touch*watchdog() function that hides
softlockup on a "well known" location.
Signed-off-by: Petr Mladek
---
fs/proc/consoles.c | 5 +
fs/proc/version.c | 7 +++
2 files
The softlockup detector does some gymnastic with the variable
soft_watchdog_warn. It was added by the commit 58687acba59266735ad
("lockup_detector: Combine nmi_watchdog and softlockup detector").
The purpose is not completely clear. There are the following clues.
They describe the situation how it
There are many touch_*watchdog() functions. They are called in situations
where the watchdog could report false positives or create unnecessary
noise. For example, when CPU is entering idle mode, a virtual machine
is stopped, or a lot of messages are printed in the atomic context.
These functions
Hi Alexandre
On Thu, Mar 11, 2021 at 6:40 PM Alexandre TORGUE
wrote:
>
> Hi Dillon
>
> On 3/3/21 9:05 AM, dillon.min...@gmail.com wrote:
> > From: dillon min
> >
> > To support stm32h750 and stm32h743, we need a base stm32h7-pinctrl.dtsi
> > as stm32h743 & h750 has almost the same interface. so,
> +static struct drm_gem_cma_object *
> +drm_gem_cma_create_with_cache_param(struct drm_device *drm,
> + size_t size,
> + bool noncoherent)
Does this helper really make much sense? You basically have two
function calls in it, out of
On Thu, Mar 11, 2021 at 07:37:13AM +0100, Rafał Miłecki wrote:
> On 10.03.2021 23:47, Ansuel Smith wrote:
> > On Wed, Mar 10, 2021 at 11:41:24PM +0100, Rafał Miłecki wrote:
> > > See inline
> > >
> > > On 10.03.2021 22:08, Ansuel Smith wrote:
> > > > Document nvmem-cells compatible used to treat m
On 2021/3/11 16:57, Marc Zyngier wrote:
> On Wed, 27 Jan 2021 12:13:34 +,
> Shenming Lu wrote:
>>
>> With GICv4.1 and the vPE unmapped, which indicates the invalidation
>> of any VPT caches associated with the vPE, we can get the VLPI state
>> by peeking at the VPT. So we add a function for th
> +int drm_gem_cma_mmap_noncoherent(struct drm_gem_object *obj,
> + struct vm_area_struct *vma)
> +{
> + struct drm_gem_cma_object *cma_obj;
> + unsigned long pfn;
> + int ret;
> +
> + /*
> + * Clear the VM_PFNMAP flag that was set by drm_gem_mmap()
On Thu, Mar 11, 2021 at 05:36:50PM +0530, Shubhankar Kuranagatti wrote:
> Switch and case have been aligned together, extra tab removed
> Removed extra space before tab.
>
> Signed-off-by: Shubhankar Kuranagatti
> ---
> init/do_mounts.c | 13 ++---
> 1 file changed, 6 insertions(+), 7 de
On Thu, Mar 11, 2021 at 08:54:12PM +0900, Namhyung Kim wrote:
> From: Namhyung Kim
>
> The kernel can allocate a lot of struct perf_event when profiling. For
> example, 256 cpu x 8 events x 20 cgroups = 40K instances of the struct
> would be allocated on a large system.
>
> The size of struct pe
On Sun, Mar 07, 2021 at 08:28:34PM +, Paul Cercueil wrote:
> + drm_atomic_for_each_plane_damage(&iter, &clip) {
> + for (i = 0; i < finfo->num_planes; i++) {
> + daddr = drm_fb_cma_get_gem_addr(state->fb, state, i);
> +
> + /* Ignore x1/x2
On Thu, Mar 04, 2021 at 01:41:42PM +0800, Shiyang Ruan wrote:
> Some operations, such as comparing a range of data in two files under
> fsdax mode, requires nested iomap_open()/iomap_end() on two file. Thus,
> we introduce iomap_apply2() to accept arguments from two files and
> iomap_actor2_t for
On Thu, Mar 11, 2021 at 01:17:15PM +0100, Peter Zijlstra wrote:
> On Wed, Mar 10, 2021 at 08:37:52AM -0800, kan.li...@linux.intel.com wrote:
> > @@ -2092,9 +2105,37 @@ static int __init init_hw_perf_events(void)
> > if (err)
> > goto out1;
> >
> > - err = perf_pmu_register(&pmu,
On Tue, Mar 09, 2021 at 06:07:14PM +0800, Muchun Song wrote:
> We know that the unit of slab object charging is bytes, the unit of
> kmem page charging is PAGE_SIZE. If we want to reuse obj_cgroup APIs
> to charge the kmem pages, we should pass PAGE_SIZE (as third parameter)
> to obj_cgroup_charge(
From: Liu xuzhi
A typo is found out by codespell tool in 34th lines of hashtab.c:
$ codespell ./kernel/bpf/
./hashtab.c:34 : differrent ==> different
Fix a typo found by codespell.
Signed-off-by: Liu xuzhi
---
kernel/bpf/hashtab.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -
On 10/03/2021 18:19, Aswath Govindraju wrote:
From: Faiz Abbas
There are 4 instances of gpio modules in main domain:
gpio0, gpio2, gpio4 and gpio6
Groups are created to provide protection between different processor
virtual worlds. Each of these modules I/O pins are muxed within the
On Sun, Mar 07, 2021 at 08:28:35PM +, Paul Cercueil wrote:
> With the module parameter ingenic-drm.cached_gem_buffers, it is possible
> to specify that we want GEM buffers backed by non-coherent memory.
Shouldn't there be a way to discover this through a DT property?
On 2021/3/11 17:09, Marc Zyngier wrote:
> On Wed, 27 Jan 2021 12:13:35 +,
> Shenming Lu wrote:
>>
>> After pausing all vCPUs and devices capable of interrupting, in order
>> to save the information of all interrupts, besides flushing the pending
>> states in kvm’s vgic, we also try to flush th
On 2021/3/11 17:14, Marc Zyngier wrote:
> On Wed, 27 Jan 2021 12:13:36 +,
> Shenming Lu wrote:
>>
>> From: Zenghui Yu
>>
>> When setting the forwarding path of a VLPI (switch to the HW mode),
>> we could also transfer the pending state from irq->pending_latch to
>> VPT (especially in migratio
Hi Mark-PK.
On Thu, 11 Mar 2021 at 12:12, Mark-PK Tsai wrote:
> For a fiq controller, the input edge signal will be convert to level and
> keep the interrupt status until we do EOI operation.
> That means if a rising edge input if trigger the ouput line will keep high
> until we clear the interru
Hi Christoph,
Le jeu. 11 mars 2021 à 12:26, Christoph Hellwig a
écrit :
+int drm_gem_cma_mmap_noncoherent(struct drm_gem_object *obj,
+ struct vm_area_struct *vma)
+{
+ struct drm_gem_cma_object *cma_obj;
+ unsigned long pfn;
+ int ret;
+
+
Hi Alexandre
On Thu, Mar 11, 2021 at 6:42 PM Alexandre TORGUE
wrote:
>
>
>
> On 3/3/21 9:05 AM, dillon.min...@gmail.com wrote:
> > From: dillon min
> >
> > This patchset has following changes:
> >
> > - add stm32h750i-art-pi.dtb
> > - add dts binding usart3 for bt, uart4 for console
> > - add dt
On Thu, Mar 11, 2021 at 12:38:21PM +0100, 'Dmitry Vyukov' via syzkaller wrote:
> Hi arm64 maintainers,
Hi Dmitry,
> We now have some syzbot instances testing arm64 (woohoo!) using qemu
> emulation. I wanted to write up the current status.
Nice!
> There are 3 instances, first uses KASAN:
> https
On Wed, Mar 10, 2021 at 08:37:52AM -0800, kan.li...@linux.intel.com wrote:
> @@ -2092,9 +2105,37 @@ static int __init init_hw_perf_events(void)
> if (err)
> goto out1;
>
> - err = perf_pmu_register(&pmu, "cpu", PERF_TYPE_RAW);
> - if (err)
> - goto out2;
>
On 09/03/2021 11:01, Peter Maydell wrote:
On Mon, 1 Mar 2021 at 14:23, Steven Price wrote:
A new capability (KVM_CAP_ARM_MTE) identifies that the kernel supports
granting a guest access to the tags, and provides a mechanism for the
VMM to enable it.
A new ioctl (KVM_ARM_MTE_COPY_TAGS) provide
On 2021/03/11 3:33, Greg KH wrote:
> On Sun, Mar 07, 2021 at 08:53:25PM -0700, Shuah Khan wrote:
>> This patch series fixes the following problems founds in syzbot
>> fuzzing.
>
> Thanks for these, all now queued up.
I send SIGSTOP to
[PATCH 4/6] usbip: fix stub_dev usbip_sockfd_store() races
Hi,
I love your patch! Perhaps something to improve:
[auto build test WARNING on iio/togreg]
[also build test WARNING on linux/master linus/master v5.12-rc2 next-20210311]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '-
Hi Alexandre
On Thu, Mar 11, 2021 at 6:43 PM Alexandre TORGUE
wrote:
>
> Hi Dillon
>
> On 3/3/21 9:05 AM, dillon.min...@gmail.com wrote:
> > From: dillon min
> >
>
> No empty commit message please
Okay, thanks for remind.
>
> > Signed-off-by: dillon min
> > ---
> > arch/arm/mach-stm32/board-d
File: drivers/net/ppp/ppp_generic.c
In ppp_unregister_channel, pch could be freed in ppp_unbridge_channels()
but after that pch is still in use. Inside the function ppp_unbridge_channels,
if "pchbb == pch" is true and then pch will be freed.
I checked the commit history and found that this proble
On Wed, Mar 10, 2021 at 09:04:58PM +0100, Pavel Machek wrote:
> Hi!
>
> On Wed 2021-03-10 14:23:34, gre...@linuxfoundation.org wrote:
> > From: Greg Kroah-Hartman
> >
> > From: Jasper St. Pierre
>
> Something is funny with the From header here. But that's not main
> thing -- this patch is evil
From: "Zhou Ti (x2019cwm)"
If the hardware clock happens to fire its interrupts late, two possible
issues can happen while calling tick_nohz_get_sleep_length(). Either:
1) The next clockevent device event is due past the last idle entry time.
or:
2) The last timekeeping update happened before
Various updates for the timer/nohz side.
* Two fixes (maybe 01/10 deserves a stable tag, I should check)
* A Kconfig help change
* A debug check while enqueuing timers when the tick is stopped in idle.
* The rest is noise reduction for full nohz ("tick/nohz: Kick only
_queued_ task whose tic
On Thu, Mar 11, 2021 at 12:32:27PM +, Paul Cercueil wrote:
> > dma_to_phys must not be used by drivers.
> >
> > I have a proper helper for this waiting for users:
> >
> > http://git.infradead.org/users/hch/misc.git/commitdiff/96a546e7229ec53aadbdb7936d1e5e6cb5958952
> >
> > If you can confir
The vtime_accounting_enabled_this_cpu() early check already makes what
follows as dead code in the case of CONFIG_VIRT_CPU_ACCOUNTING_NATIVE.
No need to keep the ifdeferry around.
Signed-off-by: Frederic Weisbecker
Cc: Yunfeng Ye
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Cc: Marcelo Tosatti
Cc:
From: Yunfeng Ye
In nohz_full mode, switching from idle to a task will unconditionally
issue a tick restart. If the task is alone in the runqueue or is the
highest priority, the tick will fire once then eventually stop. But that
alone is still undesired noise.
Therefore, only restart the tick on
Optimize further the check for local full dynticks CPU. Testing directly
tick_nohz_full_cpu(smp_processor_id()) is suboptimal because the
compiler first fetches the CPU number and only then processes the
static key.
It's best to evaluate the static branch before anything. Provide with a
function t
From: Yunfeng Ye
The idle_exittime field of tick_sched is used to record the time when
the idle state was left. but currently the idle_exittime is updated in
the function tick_nohz_restart_sched_tick(), which is not always in idle
state when nohz_full is configured:
tick_irq_exit
tick_nohz
CONFIG_NO_HZ_FULL behaves just like CONFIG_NO_HZ_IDLE by default.
Reassure distros about it.
Signed-off-by: Frederic Weisbecker
Cc: Yunfeng Ye
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Cc: Marcelo Tosatti
Cc: Rafael J. Wysocki
---
kernel/time/Kconfig | 11 ++-
1 file changed, 6 inserti
From: Marcelo Tosatti
Rather than waking up all nohz_full CPUs on the system, only wakeup
the target CPUs of member threads of the signal.
Reduces interruptions to nohz_full CPUs.
Signed-off-by: Marcelo Tosatti
Cc: Yunfeng Ye
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Cc: Rafael J. Wysocki
Sig
When adding a tick dependency to a task, its necessary to
wakeup the CPU where the task resides to reevaluate tick
dependencies on that CPU.
However the current code wakes up all nohz_full CPUs, which
is unnecessary.
Switch to waking up a single CPU, by using ordering of writes
to task->cpu and t
Enqueuing a local timer after the tick has been stopped will result in
the timer being ignored until the next random interrupt.
Perform sanity checks to report these situations.
Reviewed-by: Rafael J. Wysocki
Signed-off-by: Frederic Weisbecker
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Cc: Ingo M
From: Marcelo Tosatti
When the tick dependency of a task is updated, we want it to aknowledge
the new state and restart the tick if needed. If the task is not
running, we don't need to kick it because it will observe the new
dependency upon scheduling in. But if the task is running, we may need
t
On Thu, Mar 11, 2021 at 11:39:23AM +, r...@heitbaum.com wrote:
> On Wed, Mar 10, 2021 at 07:29:23PM +0100, gre...@linuxfoundation.org wrote:
> > From: Greg Kroah-Hartman
> >
> > This is the start of the stable review cycle for the 5.10.23 release.
> > There are 47 patches in this series, all
Le 11/03/2021 à 11:38, Christophe Leroy a écrit :
Le 10/03/2021 à 02:33, Nicholas Piggin a écrit :
Excerpts from Christophe Leroy's message of March 9, 2021 10:10 pm:
No need to do that is assembly, do it in C.
Hmm. No issues with the patch as such, but why does ppc32 need this but
not 6
On Wednesday 24 February 2021 14:11:28 Jianjun Wang wrote:
> +static int mtk_pcie_startup_port(struct mtk_pcie_port *port)
> +{
...
> +
> + /* Delay 100ms to wait the reference clocks become stable */
> + msleep(100);
> +
> + /* De-assert PERST# signal */
> + val &= ~PCIE_PE_RSTB;
>
On Thu, Mar 11 2021 at 00:56, Thomas Gleixner wrote:
> Rant aside, there is no massive benefit of doing that caching in
> general, but there is not much of a downside either and for particular
> use cases it's useful even outside of PREEMPT_RT.
>
> IMO, having it there unconditionally is better tha
On Thu 11-03-21 12:36:51, Peter Zijlstra wrote:
[...]
> Also, Linus hates constructs like this:
>
>
> https://lkml.kernel.org/r/CAHk-=wht7kaeyr5xew2orj7m0hibvxz3t+2ie8vnhlqfdbn...@mail.gmail.com
Btw. I would really appreciate if somebody would explain why it is
_fundamentally broken_ to check
On Tue, Mar 09, 2021 at 02:48:01PM +0100, Juergen Gross wrote:
> This is a major cleanup of the paravirt infrastructure aiming at
> eliminating all custom code patching via paravirt patching.
>
> This is achieved by using ALTERNATIVE instead, leading to the ability
> to give objtool access to the
On Wed, Mar 10, 2021 at 08:37:56AM -0800, kan.li...@linux.intel.com wrote:
> @@ -4059,6 +4099,34 @@ tfa_get_event_constraints(struct cpu_hw_events *cpuc,
> int idx,
> return c;
> }
>
> +static struct event_constraint *
> +adl_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
> +
On Thu, Mar 11, 2021 at 01:50:26PM +0100, Borislav Petkov wrote:
> and move the cleanups patches 13 and 14 to the beginning of the set?
Yeah, 14 needs ALTERNATIVE_TERNARY so I guess after patch 5, that is.
Thx.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
The root clock generators with MND divider has the capability to support
change in duty-cycle by updating the 'D'. Add the clock ops which would
check all the boundary conditions and enable setting the desired duty-cycle
as per the consumer.
Signed-off-by: Taniya Das
---
drivers/clk/qcom/clk-rcg
[+cc Daniel, Mika (author, reviewer of 3030df209aa8]
On Thu, Mar 11, 2021 at 10:11:35AM +0530, Shirish S wrote:
> From: Julian Schroeder
>
> This allows for an extra 10ms for the state transition.
> Currently only AMD PCO based APUs are covered by this table.
I'm really glad to see this coming
The softlockup situation might stay for a long time or even forever.
When it happens, the softlockup debug messages are printed in regular
intervals defined by get_softlockup_thresh().
There is a mystery. The repeated message is printed after the full interval
that is defined by get_softlockup_thr
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