The "managed_irq" for isolcpus is supported after the commit 11ea68f553e2 ("genirq, sched/isolation: Isolate from handling managed interrupts"), but the interrupt affinity shown in proc directory is still the original affinity.
So modify the interrupt affinity correctly for managed_irq. Signed-off-by: yeyunfeng <yeyunf...@huawei.com> --- kernel/irq/manage.c | 38 ++++++++++++++++++++++++-------------- 1 file changed, 24 insertions(+), 14 deletions(-) diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index d55ba625d426..6ad4fe01942a 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -218,8 +218,8 @@ static inline void irq_init_effective_affinity(struct irq_data *data, const struct cpumask *mask) { } #endif -int irq_do_set_affinity(struct irq_data *data, const struct cpumask *mask, - bool force) +static int irq_chip_set_affinity(struct irq_data *data, + const struct cpumask *mask, bool force) { struct irq_desc *desc = irq_data_to_desc(data); struct irq_chip *chip = irq_data_get_irq_chip(data); @@ -228,6 +228,26 @@ int irq_do_set_affinity(struct irq_data *data, const struct cpumask *mask, if (!chip || !chip->irq_set_affinity) return -EINVAL; + ret = chip->irq_set_affinity(data, mask, force); + switch (ret) { + case IRQ_SET_MASK_OK: + case IRQ_SET_MASK_OK_DONE: + cpumask_copy(desc->irq_common_data.affinity, mask); + /* fall through */ + case IRQ_SET_MASK_OK_NOCOPY: + irq_validate_effective_affinity(data); + irq_set_thread_affinity(desc); + ret = 0; + } + + return ret; +} + +int irq_do_set_affinity(struct irq_data *data, const struct cpumask *mask, + bool force) +{ + int ret; + /* * If this is a managed interrupt and housekeeping is enabled on * it check whether the requested affinity mask intersects with @@ -262,20 +282,10 @@ int irq_do_set_affinity(struct irq_data *data, const struct cpumask *mask, prog_mask = mask; else prog_mask = &tmp_mask; - ret = chip->irq_set_affinity(data, prog_mask, force); + ret = irq_chip_set_affinity(data, prog_mask, force); raw_spin_unlock(&tmp_mask_lock); } else { - ret = chip->irq_set_affinity(data, mask, force); - } - switch (ret) { - case IRQ_SET_MASK_OK: - case IRQ_SET_MASK_OK_DONE: - cpumask_copy(desc->irq_common_data.affinity, mask); - /* fall through */ - case IRQ_SET_MASK_OK_NOCOPY: - irq_validate_effective_affinity(data); - irq_set_thread_affinity(desc); - ret = 0; + ret = irq_chip_set_affinity(data, mask, force); } return ret; -- 1.8.3.1