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PCI: hv: Refactor hv_irq_unmask() to use cpumask_to_vpset()

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Remove the duplicate implementation of cpumask_to_vpset() and use the
shared implementation. Export hv_max_vp_index, which is required by
cpumask_to_vpset().

Signed-off-by: Maya Nakamura <m.maya.nakamura@gmail.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Tested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
This commit is contained in:
Maya Nakamura 2019-03-01 07:04:17 +00:00 • committed by Lorenzo Pieralisi
parent 9bc1174280
commit c8ccf7599d
2 changed files with 18 additions and 21 deletions
Download patch file Download diff file Expand all files Collapse all files

1
arch/x86/hyperv/hv_init.c
View file

@ -96,6 +96,7 @@ void __percpu **hyperv_pcpu_input_arg;
EXPORT_SYMBOL_GPL(hyperv_pcpu_input_arg); EXPORT_SYMBOL_GPL(hyperv_pcpu_input_arg);
u32 hv_max_vp_index; u32 hv_max_vp_index;
EXPORT_SYMBOL_GPL(hv_max_vp_index);
static int hv_cpu_init(unsigned int cpu) static int hv_cpu_init(unsigned int cpu)
{ {

38
drivers/pci/controller/pci-hyperv.c
View file

@ -391,8 +391,6 @@ struct hv_interrupt_entry {
u32 data; u32 data;
}; };
#define HV_VP_SET_BANK_COUNT_MAX 5 /* current implementation limit */
/* /*
* flags for hv_device_interrupt_target.flags * flags for hv_device_interrupt_target.flags
*/ */
@ -908,12 +906,12 @@ static void hv_irq_unmask(struct irq_data *data)
struct retarget_msi_interrupt *params; struct retarget_msi_interrupt *params;
struct hv_pcibus_device *hbus; struct hv_pcibus_device *hbus;
struct cpumask *dest; struct cpumask *dest;
cpumask_var_t tmp;
struct pci_bus *pbus; struct pci_bus *pbus;
struct pci_dev *pdev; struct pci_dev *pdev;
unsigned long flags; unsigned long flags;
u32 var_size = 0; u32 var_size = 0;
int cpu_vmbus; int cpu, nr_bank;
int cpu;
u64 res; u64 res;
dest = irq_data_get_effective_affinity_mask(data); dest = irq_data_get_effective_affinity_mask(data);
@ -953,29 +951,27 @@ static void hv_irq_unmask(struct irq_data *data)
*/ */
params->int_target.flags |= params->int_target.flags |=
HV_DEVICE_INTERRUPT_TARGET_PROCESSOR_SET; HV_DEVICE_INTERRUPT_TARGET_PROCESSOR_SET;
params->int_target.vp_set.valid_bank_mask =
(1ull << HV_VP_SET_BANK_COUNT_MAX) - 1; if (!alloc_cpumask_var(&tmp, GFP_ATOMIC)) {
res = 1;
goto exit_unlock;
}
cpumask_and(tmp, dest, cpu_online_mask);
nr_bank = cpumask_to_vpset(&params->int_target.vp_set, tmp);
free_cpumask_var(tmp);
if (nr_bank <= 0) {
res = 1;
goto exit_unlock;
}
/* /*
* var-sized hypercall, var-size starts after vp_mask (thus * var-sized hypercall, var-size starts after vp_mask (thus
* vp_set.format does not count, but vp_set.valid_bank_mask * vp_set.format does not count, but vp_set.valid_bank_mask
* does). * does).
*/ */
var_size = 1 + HV_VP_SET_BANK_COUNT_MAX; var_size = 1 + nr_bank;
for_each_cpu_and(cpu, dest, cpu_online_mask) {
cpu_vmbus = hv_cpu_number_to_vp_number(cpu);
if (cpu_vmbus >= HV_VP_SET_BANK_COUNT_MAX * 64) {
dev_err(&hbus->hdev->device,
"too high CPU %d", cpu_vmbus);
res = 1;
goto exit_unlock;
}
params->int_target.vp_set.bank_contents[cpu_vmbus / 64] |=
(1ULL << (cpu_vmbus & 63));
}
} else { } else {
for_each_cpu_and(cpu, dest, cpu_online_mask) { for_each_cpu_and(cpu, dest, cpu_online_mask) {
params->int_target.vp_mask |= params->int_target.vp_mask |=