diff options
| author | Thomas Gleixner <[email protected]> | 2014-04-16 14:36:44 +0000 |
|---|---|---|
| committer | Thomas Gleixner <[email protected]> | 2014-04-17 23:36:28 +0200 |
| commit | ffde1de64012c406dfdda8690918248b472f24e4 (patch) | |
| tree | 4506aeedf6a322be1fbc9381569fb80499fc3ce1 | |
| parent | 01f8fa4f01d8362358eb90e412bd7ae18a3ec1ad (diff) | |
irqchip: Gic: Support forced affinity setting
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 <[email protected]>
Tested-by: Krzysztof Kozlowski <[email protected]>
Cc: Kyungmin Park <[email protected]>
Cc: Marek Szyprowski <[email protected]>
Cc: Bartlomiej Zolnierkiewicz <[email protected]>
Cc: Tomasz Figa <[email protected]>,
Cc: Daniel Lezcano <[email protected]>,
Cc: Kukjin Kim <[email protected]>
Cc: [email protected],
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
| -rw-r--r-- | drivers/irqchip/irq-gic.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c index 4300b6606f5e..57d165e026f4 100644 --- a/drivers/irqchip/irq-gic.c +++ b/drivers/irqchip/irq-gic.c @@ -246,10 +246,14 @@ static int gic_set_affinity(struct irq_data *d, const struct cpumask *mask_val, 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; |