On 9/24/20 10:27 AM, pet...@infradead.org wrote:
> So my current todo list is:
>
> - Change RT PULL
> - Change DL PULL
> - Add migrate_disable() tracer; exactly like preempt/irqoff, except
>measuring task-runtime instead of cpu-time.
> - Add a mode that measures actual interference.
> - A
On Thu, 24 Sep 2020 19:55:10 +0200
Thomas Gleixner wrote:
> On Thu, Sep 24 2020 at 08:32, Steven Rostedt wrote:
> > On Thu, 24 Sep 2020 08:57:52 +0200
> > Thomas Gleixner wrote:
> >
> >> > Now as for migration disabled nesting, at least now we would have
> >> > groupings of this, and perhaps t
On Thu, Sep 24 2020 at 08:32, Steven Rostedt wrote:
> On Thu, 24 Sep 2020 08:57:52 +0200
> Thomas Gleixner wrote:
>
>> > Now as for migration disabled nesting, at least now we would have
>> > groupings of this, and perhaps the theorists can handle that. I mean,
>> > how is this much different that
On Thu, Sep 24, 2020 at 09:51:38AM -0400, Steven Rostedt wrote:
> > It turns out, that getting selected for pull-balance is exactly that
> > condition, and clearly a migrate_disable() task cannot be pulled, but we
> > can use that signal to try and pull away the running task that's in the
> > way.
On Thu, 24 Sep 2020 14:42:41 +0200
Peter Zijlstra wrote:
> On Thu, Sep 24, 2020 at 08:32:41AM -0400, Steven Rostedt wrote:
> > Anyway, instead of blocking. What about having a counter of number of
> > migrate disabled tasks per cpu, and when taking a migrate_disable(), and
> > there's
> > alread
On Thu, Sep 24, 2020 at 08:32:41AM -0400, Steven Rostedt wrote:
> Anyway, instead of blocking. What about having a counter of number of
> migrate disabled tasks per cpu, and when taking a migrate_disable(), and
> there's
> already another task with migrate_disabled() set, and the current task has
On Thu, 24 Sep 2020 08:57:52 +0200
Thomas Gleixner wrote:
> > Now as for migration disabled nesting, at least now we would have
> > groupings of this, and perhaps the theorists can handle that. I mean,
> > how is this much different that having a bunch of tasks blocked on a
> > mutex with the own
On Wed, Sep 23, 2020 at 11:52:51AM -0400, Steven Rostedt wrote:
> On Wed, 23 Sep 2020 10:40:32 +0200
> pet...@infradead.org wrote:
>
> > However, with migrate_disable() we can have each task preempted in a
> > migrate_disable() region, worse we can stack them all on the _same_ CPU
> > (super ridic
Add support to use dw-apb-ictl as primary interrupt controller.
Signed-off-by: Zhen Lei
Reviewed-by: Rob Herring
---
.../bindings/interrupt-controller/snps,dw-apb-ictl.txt | 14 +-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git
a/Documentation/devicetree/bindings/i
v5 --> v6:
1. add Reviewed-by: Rob Herring for Patch 4.
2. Some modifications are made to Patch 5:
1) add " |" for each "description:" property if its content exceeds one line,
to tell the yaml keep the "newline" character.
2) add "..." to mark the end of the yaml file.
3) Change th
xxx/arc/boot/dts/axs101.dt.yaml: dw-apb-ictl@e0012000: $nodename:0: \
'dw-apb-ictl@e0012000' does not match '^interrupt-controller(@[0-9a-f,]+)*$'
>From schema: xxx/interrupt-controller/snps,dw-apb-ictl.yaml
The node name of the interrupt controller must start with
"interrupt-controller" instead o
Rename some functions and variables in advance, to make the next patch
looks more clear. The details are as follows:
1. rename dw_apb_ictl_handler() to dw_apb_ictl_handle_irq_cascaded().
2. change (1 << hwirq) to BIT(hwirq).
In function dw_apb_ictl_init():
1. rename local variable irq to parent_ir
Convert the Synopsys DesignWare APB interrupt controller (dw_apb_ictl)
binding to DT schema format using json-schema.
Signed-off-by: Zhen Lei
---
.../interrupt-controller/snps,dw-apb-ictl.txt | 43 -
.../interrupt-controller/snps,dw-apb-ictl.yaml | 74 ++
Add support to use dw-apb-ictl as primary interrupt controller.
Suggested-by: Marc Zyngier
Signed-off-by: Zhen Lei
Tested-by: Haoyu Lv
---
drivers/irqchip/Kconfig | 2 +-
drivers/irqchip/irq-dw-apb-ictl.c | 74 ++-
2 files changed, 67 insertions(+
To avoid compilation error if an irqchip driver references the function
set_handle_irq() but may not select GENERIC_IRQ_MULTI_HANDLER on some
systems.
For example, the Synopsys DesignWare APB interrupt controller
(dw_apb_ictl) is used as the secondary interrupt controller on arc, csky,
arm64, and
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