* [PATCH 0/2] arm64: make it possible to enable threadirqs
@ 2015-04-21 15:05 ` Anders Roxell
0 siblings, 0 replies; 8+ messages in thread
From: Anders Roxell @ 2015-04-21 15:05 UTC (permalink / raw)
To: catalin.marinas, will.deacon
Cc: a.p.zijlstra, paulus, mingo, acme, linux-kernel,
linux-arm-kernel, khilman, steve.capper, Anders Roxell
Hi,
This patchset makes it possible to pass "threadirqs" on the CONFIG_CMDLINE to
make IRQs threaded.
This is safe to use now because all timer interrupts and the perf interrupt are
marked NO_THREAD.
NOTE: I had to add this patch [1] to be able to test this on a juno board.
Without this patch, I see unhandled IRQs in mainline. However, it is unclear
whether or not this will be the actual fix that appears in mainline [2].
Cheers,
Anders
[1] http://lists.infradead.org/pipermail/linux-arm-kernel/2015-January/319901.html
[2] http://lists.infradead.org/pipermail/linux-arm-kernel/2015-February/322251.html
Anders Roxell (2):
arm64: Mark PMU interrupt IRQF_NO_THREAD
arm64: Allow forced irq threading
arch/arm64/Kconfig | 1 +
arch/arm64/kernel/perf_event.c | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)
--
2.1.4
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH 0/2] arm64: make it possible to enable threadirqs
@ 2015-04-21 15:05 ` Anders Roxell
0 siblings, 0 replies; 8+ messages in thread
From: Anders Roxell @ 2015-04-21 15:05 UTC (permalink / raw)
To: linux-arm-kernel
Hi,
This patchset makes it possible to pass "threadirqs" on the CONFIG_CMDLINE to
make IRQs threaded.
This is safe to use now because all timer interrupts and the perf interrupt are
marked NO_THREAD.
NOTE: I had to add this patch [1] to be able to test this on a juno board.
Without this patch, I see unhandled IRQs in mainline. However, it is unclear
whether or not this will be the actual fix that appears in mainline [2].
Cheers,
Anders
[1] http://lists.infradead.org/pipermail/linux-arm-kernel/2015-January/319901.html
[2] http://lists.infradead.org/pipermail/linux-arm-kernel/2015-February/322251.html
Anders Roxell (2):
arm64: Mark PMU interrupt IRQF_NO_THREAD
arm64: Allow forced irq threading
arch/arm64/Kconfig | 1 +
arch/arm64/kernel/perf_event.c | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)
--
2.1.4
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH 1/2] arm64: Mark PMU interrupt IRQF_NO_THREAD
2015-04-21 15:05 ` Anders Roxell
@ 2015-04-21 15:05 ` Anders Roxell
-1 siblings, 0 replies; 8+ messages in thread
From: Anders Roxell @ 2015-04-21 15:05 UTC (permalink / raw)
To: catalin.marinas, will.deacon
Cc: a.p.zijlstra, paulus, mingo, acme, linux-kernel,
linux-arm-kernel, khilman, steve.capper, Anders Roxell
Mark the PMU interrupts as non-threadable, as is the case with
arch/arm: d9c3365 ARM: 7813/1: Mark pmu interupt IRQF_NO_THREAD
Suggested-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
---
arch/arm64/kernel/perf_event.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c
index 195991d..7db5c84 100644
--- a/arch/arm64/kernel/perf_event.c
+++ b/arch/arm64/kernel/perf_event.c
@@ -488,7 +488,7 @@ armpmu_reserve_hardware(struct arm_pmu *armpmu)
}
err = request_irq(irq, armpmu->handle_irq,
- IRQF_NOBALANCING,
+ IRQF_NOBALANCING | IRQF_NO_THREAD,
"arm-pmu", armpmu);
if (err) {
pr_err("unable to request IRQ%d for ARM PMU counters\n",
--
2.1.4
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH 1/2] arm64: Mark PMU interrupt IRQF_NO_THREAD
@ 2015-04-21 15:05 ` Anders Roxell
0 siblings, 0 replies; 8+ messages in thread
From: Anders Roxell @ 2015-04-21 15:05 UTC (permalink / raw)
To: linux-arm-kernel
Mark the PMU interrupts as non-threadable, as is the case with
arch/arm: d9c3365 ARM: 7813/1: Mark pmu interupt IRQF_NO_THREAD
Suggested-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
---
arch/arm64/kernel/perf_event.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c
index 195991d..7db5c84 100644
--- a/arch/arm64/kernel/perf_event.c
+++ b/arch/arm64/kernel/perf_event.c
@@ -488,7 +488,7 @@ armpmu_reserve_hardware(struct arm_pmu *armpmu)
}
err = request_irq(irq, armpmu->handle_irq,
- IRQF_NOBALANCING,
+ IRQF_NOBALANCING | IRQF_NO_THREAD,
"arm-pmu", armpmu);
if (err) {
pr_err("unable to request IRQ%d for ARM PMU counters\n",
--
2.1.4
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH 2/2] arm64: Allow forced irq threading
2015-04-21 15:05 ` Anders Roxell
@ 2015-04-21 15:05 ` Anders Roxell
-1 siblings, 0 replies; 8+ messages in thread
From: Anders Roxell @ 2015-04-21 15:05 UTC (permalink / raw)
To: catalin.marinas, will.deacon
Cc: a.p.zijlstra, paulus, mingo, acme, linux-kernel,
linux-arm-kernel, khilman, steve.capper, Anders Roxell
Now its safe to allow forced interrupt threading for arm64,
all timer interrupts and the perf interrupt are marked NO_THREAD, as is
the case with arch/arm: da0ec6f ARM: 7814/2: Allow forced irq threading
Suggested-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
---
arch/arm64/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index b8d96f1..1abb840 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -68,6 +68,7 @@ config ARM64
select HAVE_RCU_TABLE_FREE
select HAVE_SYSCALL_TRACEPOINTS
select IRQ_DOMAIN
+ select IRQ_FORCED_THREADING
select MODULES_USE_ELF_RELA
select NO_BOOTMEM
select OF
--
2.1.4
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH 2/2] arm64: Allow forced irq threading
@ 2015-04-21 15:05 ` Anders Roxell
0 siblings, 0 replies; 8+ messages in thread
From: Anders Roxell @ 2015-04-21 15:05 UTC (permalink / raw)
To: linux-arm-kernel
Now its safe to allow forced interrupt threading for arm64,
all timer interrupts and the perf interrupt are marked NO_THREAD, as is
the case with arch/arm: da0ec6f ARM: 7814/2: Allow forced irq threading
Suggested-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
---
arch/arm64/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index b8d96f1..1abb840 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -68,6 +68,7 @@ config ARM64
select HAVE_RCU_TABLE_FREE
select HAVE_SYSCALL_TRACEPOINTS
select IRQ_DOMAIN
+ select IRQ_FORCED_THREADING
select MODULES_USE_ELF_RELA
select NO_BOOTMEM
select OF
--
2.1.4
^ permalink raw reply related [flat|nested] 8+ messages in thread
* Re: [PATCH 1/2] arm64: Mark PMU interrupt IRQF_NO_THREAD
2015-04-21 15:05 ` Anders Roxell
@ 2015-04-23 10:46 ` Will Deacon
-1 siblings, 0 replies; 8+ messages in thread
From: Will Deacon @ 2015-04-23 10:46 UTC (permalink / raw)
To: Anders Roxell
Cc: Catalin Marinas, a.p.zijlstra, paulus, mingo, acme, linux-kernel,
linux-arm-kernel, khilman, steve.capper
On Tue, Apr 21, 2015 at 04:05:54PM +0100, Anders Roxell wrote:
> Mark the PMU interrupts as non-threadable, as is the case with
> arch/arm: d9c3365 ARM: 7813/1: Mark pmu interupt IRQF_NO_THREAD
>
> Suggested-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
> Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
> ---
> arch/arm64/kernel/perf_event.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Acked-by: Will Deacon <will.deacon@arm.com>
Catalin can queue this for 4.2.
Cheers,
Will
> diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c
> index 195991d..7db5c84 100644
> --- a/arch/arm64/kernel/perf_event.c
> +++ b/arch/arm64/kernel/perf_event.c
> @@ -488,7 +488,7 @@ armpmu_reserve_hardware(struct arm_pmu *armpmu)
> }
>
> err = request_irq(irq, armpmu->handle_irq,
> - IRQF_NOBALANCING,
> + IRQF_NOBALANCING | IRQF_NO_THREAD,
> "arm-pmu", armpmu);
> if (err) {
> pr_err("unable to request IRQ%d for ARM PMU counters\n",
> --
> 2.1.4
>
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH 1/2] arm64: Mark PMU interrupt IRQF_NO_THREAD
@ 2015-04-23 10:46 ` Will Deacon
0 siblings, 0 replies; 8+ messages in thread
From: Will Deacon @ 2015-04-23 10:46 UTC (permalink / raw)
To: linux-arm-kernel
On Tue, Apr 21, 2015 at 04:05:54PM +0100, Anders Roxell wrote:
> Mark the PMU interrupts as non-threadable, as is the case with
> arch/arm: d9c3365 ARM: 7813/1: Mark pmu interupt IRQF_NO_THREAD
>
> Suggested-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
> Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
> ---
> arch/arm64/kernel/perf_event.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Acked-by: Will Deacon <will.deacon@arm.com>
Catalin can queue this for 4.2.
Cheers,
Will
> diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c
> index 195991d..7db5c84 100644
> --- a/arch/arm64/kernel/perf_event.c
> +++ b/arch/arm64/kernel/perf_event.c
> @@ -488,7 +488,7 @@ armpmu_reserve_hardware(struct arm_pmu *armpmu)
> }
>
> err = request_irq(irq, armpmu->handle_irq,
> - IRQF_NOBALANCING,
> + IRQF_NOBALANCING | IRQF_NO_THREAD,
> "arm-pmu", armpmu);
> if (err) {
> pr_err("unable to request IRQ%d for ARM PMU counters\n",
> --
> 2.1.4
>
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2015-04-23 10:46 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
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2015-04-21 15:05 [PATCH 0/2] arm64: make it possible to enable threadirqs Anders Roxell
2015-04-21 15:05 ` Anders Roxell
2015-04-21 15:05 ` [PATCH 1/2] arm64: Mark PMU interrupt IRQF_NO_THREAD Anders Roxell
2015-04-21 15:05 ` Anders Roxell
2015-04-23 10:46 ` Will Deacon
2015-04-23 10:46 ` Will Deacon
2015-04-21 15:05 ` [PATCH 2/2] arm64: Allow forced irq threading Anders Roxell
2015-04-21 15:05 ` Anders Roxell
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