leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

x86/vector: Compile SMP only code conditionally

Browse Source 
No point in compiling this for UP.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Juergen Gross <jgross@suse.com>
Tested-by: Yu Chen <yu.c.chen@intel.com>
Acked-by: Juergen Gross <jgross@suse.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Alok Kataria <akataria@vmware.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Rui Zhang <rui.zhang@intel.com>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Len Brown <lenb@kernel.org>
Link: https://lkml.kernel.org/r/20170913213155.603191841@linutronix.de
This commit is contained in:
Thomas Gleixner 2017-09-13 23:29:44 +02:00
parent baab1e84b1
commit ba801640b1
1 changed files with 20 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
arch/x86/kernel/apic/vector.c
View File

@ -450,6 +450,7 @@ int __init arch_early_irq_init(void)
return arch_early_ioapic_init();
}
#ifdef CONFIG_SMP
/* Temporary hack to keep things working */
static void vector_update_shutdown_irqs(void)
{
@ -517,6 +518,25 @@ void lapic_offline(void)
unlock_vector_lock();
}
static int apic_set_affinity(struct irq_data *irqd,
const struct cpumask *dest, bool force)
{
int err;
if (!IS_ENABLED(CONFIG_SMP))
return -EPERM;
if (!cpumask_intersects(dest, cpu_online_mask))
return -EINVAL;
err = assign_irq_vector(irqd, dest);
return err ? err : IRQ_SET_MASK_OK;
}
#else
# define apic_set_affinity NULL
#endif
static int apic_retrigger_irq(struct irq_data *irqd)
{
struct apic_chip_data *apicd = apic_chip_data(irqd);
@ -536,21 +556,6 @@ void apic_ack_edge(struct irq_data *irqd)
ack_APIC_irq();
}
static int apic_set_affinity(struct irq_data *irqd,
const struct cpumask *dest, bool force)
{
int err;
if (!IS_ENABLED(CONFIG_SMP))
return -EPERM;
if (!cpumask_intersects(dest, cpu_online_mask))
return -EINVAL;
err = assign_irq_vector(irqd, dest);
return err ? err : IRQ_SET_MASK_OK;
}
static struct irq_chip lapic_controller = {
.name = "APIC",
.irq_ack = apic_ack_edge,