Messages in this thread Patch in this message | | | Date | Wed, 16 Apr 2014 14:36:44 -0000 | From | Thomas Gleixner <> | Subject | [patch 2/4] irqchip: gic: Support forced affinity setting |
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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@linutronix.de> --- drivers/irqchip/irq-gic.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
Index: tip/drivers/irqchip/irq-gic.c =================================================================== --- tip.orig/drivers/irqchip/irq-gic.c +++ tip/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;
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