This is a note to let you know that I've just added the patch titled
irqchip: Gic: Support forced affinity setting
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
irqchip-gic-support-forced-affinity-setting.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From ffde1de64012c406dfdda8690918248b472f24e4 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Date: Wed, 16 Apr 2014 14:36:44 +0000
Subject: irqchip: Gic: Support forced affinity setting
From: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
commit ffde1de64012c406dfdda8690918248b472f24e4 upstream.
To support the affinity setting of per cpu timers in the early startup
of a not yet online cpu, implement the force logic, which disables the
cpu online check.
Tagged for stable to allow a simple fix of the affected SoC clock
event drivers.
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Tested-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
Cc: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
Cc: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>
Cc: Tomasz Figa <t.figa@xxxxxxxxxxx>,
Cc: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>,
Cc: Kukjin Kim <kgene.kim@xxxxxxxxxxx>
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx,
Link: http://lkml.kernel.org/r/20140416143315.916984416@xxxxxxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/irqchip/irq-gic.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -246,10 +246,14 @@ static int gic_set_affinity(struct irq_d
bool force)
{
void __iomem *reg = gic_dist_base(d) + GIC_DIST_TARGET + (gic_irq(d) & ~3);
- unsigned int shift = (gic_irq(d) % 4) * 8;
- unsigned int cpu = cpumask_any_and(mask_val, cpu_online_mask);
+ unsigned int cpu, shift = (gic_irq(d) % 4) * 8;
u32 val, mask, bit;
+ if (!force)
+ cpu = cpumask_any_and(mask_val, cpu_online_mask);
+ else
+ cpu = cpumask_first(mask_val);
+
if (cpu >= NR_GIC_CPU_IF || cpu >= nr_cpu_ids)
return -EINVAL;
Patches currently in stable-queue which might be from tglx@xxxxxxxxxxxxx are
queue-3.14/futex-add-another-early-deadlock-detection-check.patch
queue-3.14/irqchip-gic-support-forced-affinity-setting.patch
queue-3.14/futex-prevent-attaching-to-kernel-threads.patch
queue-3.14/rtmutex-fix-deadlock-detector-for-real.patch
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