| Message ID | 1433145945-789-28-git-send-email-jiang.liu@linux.intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
On Mon, 1 Jun 2015, Jiang Liu wrote: > diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c > index 9b62f690b0ff..dfa3a5f5b3d3 100644 > --- a/arch/x86/kernel/apic/vector.c > +++ b/arch/x86/kernel/apic/vector.c > @@ -494,9 +494,8 @@ static int apic_set_affinity(struct irq_data *irq_data, > > err = assign_irq_vector(irq, data, dest); > if (err) { > - struct irq_data *top = irq_get_irq_data(irq); > - > - if (assign_irq_vector(irq, data, top->affinity)) > + if (assign_irq_vector(irq, data, > + irq_data_get_affinity_mask(irq_data))) Does this patch work w/o moving the affinity mask to common data? I doubt so, as you remove the retrieval of 'top'. Thanks, tglx -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 2015/6/3 3:19, Thomas Gleixner wrote: > On Mon, 1 Jun 2015, Jiang Liu wrote: > >> diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c >> index 9b62f690b0ff..dfa3a5f5b3d3 100644 >> --- a/arch/x86/kernel/apic/vector.c >> +++ b/arch/x86/kernel/apic/vector.c >> @@ -494,9 +494,8 @@ static int apic_set_affinity(struct irq_data *irq_data, >> >> err = assign_irq_vector(irq, data, dest); >> if (err) { >> - struct irq_data *top = irq_get_irq_data(irq); >> - >> - if (assign_irq_vector(irq, data, top->affinity)) >> + if (assign_irq_vector(irq, data, >> + irq_data_get_affinity_mask(irq_data))) > > Does this patch work w/o moving the affinity mask to common data? I > doubt so, as you remove the retrieval of 'top'. Hi Thomas, This piece of code should be moved into [31/36], otherwise it will break bisecting. I will redo patch this and [31/36] to support bisecting. Thanks! Gerry > > Thanks, > > tglx > -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 845dc0df2002..09921de4210f 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -2541,7 +2541,7 @@ void __init setup_ioapic_dest(void) * Honour affinities which have been set in early boot */ if (!irqd_can_balance(idata) || irqd_affinity_was_set(idata)) - mask = idata->affinity; + mask = irq_data_get_affinity_mask(idata); else mask = apic->target_cpus(); diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c index 9b62f690b0ff..dfa3a5f5b3d3 100644 --- a/arch/x86/kernel/apic/vector.c +++ b/arch/x86/kernel/apic/vector.c @@ -494,9 +494,8 @@ static int apic_set_affinity(struct irq_data *irq_data, err = assign_irq_vector(irq, data, dest); if (err) { - struct irq_data *top = irq_get_irq_data(irq); - - if (assign_irq_vector(irq, data, top->affinity)) + if (assign_irq_vector(irq, data, + irq_data_get_affinity_mask(irq_data))) pr_err("Failed to recover vector for irq %d\n", irq); return err; } diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c index 7e10c8b4b318..37685e37550c 100644 --- a/arch/x86/kernel/irq.c +++ b/arch/x86/kernel/irq.c @@ -342,7 +342,8 @@ int check_irq_vectors_for_cpu_disable(void) continue; data = irq_desc_get_irq_data(desc); - cpumask_copy(&affinity_new, data->affinity); + cpumask_copy(&affinity_new, + irq_data_get_affinity_mask(data)); cpumask_clear_cpu(this_cpu, &affinity_new); /* Do not count inactive or per-cpu irqs. */ @@ -420,7 +421,7 @@ void fixup_irqs(void) raw_spin_lock(&desc->lock); data = irq_desc_get_irq_data(desc); - affinity = data->affinity; + affinity = irq_data_get_affinity_mask(data); if (!irq_has_action(irq) || irqd_is_per_cpu(data) || cpumask_subset(affinity, cpu_online_mask)) { raw_spin_unlock(&desc->lock); diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c index 2b8553bd8715..d00e0be8e9ea 100644 --- a/drivers/xen/events/events_base.c +++ b/drivers/xen/events/events_base.c @@ -336,7 +336,7 @@ static void bind_evtchn_to_cpu(unsigned int chn, unsigned int cpu) BUG_ON(irq == -1); #ifdef CONFIG_SMP - cpumask_copy(irq_get_irq_data(irq)->affinity, cpumask_of(cpu)); + cpumask_copy(irq_get_affinity_mask(irq), cpumask_of(cpu)); #endif xen_evtchn_port_bind_to_cpu(info, cpu); @@ -373,7 +373,7 @@ static void xen_irq_init(unsigned irq) struct irq_info *info; #ifdef CONFIG_SMP /* By default all event channels notify CPU#0. */ - cpumask_copy(irq_get_irq_data(irq)->affinity, cpumask_of(0)); + cpumask_copy(irq_get_affinity_mask(irq), cpumask_of(0)); #endif info = kzalloc(sizeof(*info), GFP_KERNEL);
Use access helper irq_data_get_affinity_mask() to hide implementation details of struct irq_desc. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> --- arch/x86/kernel/apic/io_apic.c | 2 +- arch/x86/kernel/apic/vector.c | 5 ++--- arch/x86/kernel/irq.c | 5 +++-- drivers/xen/events/events_base.c | 4 ++-- 4 files changed, 8 insertions(+), 8 deletions(-)