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x86: Get rid of get_nr_irqs_gsi() 

No need to expose this outside of the ioapic code. The dynamic
allocations are guaranteed not to happen in the gsi space. See commit
62a08ae2a.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Grant Likely <grant.likely@linaro.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: x86@kernel.org
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: xen-devel@lists.xenproject.org
Link: http://lkml.kernel.org/r/20140507154335.959870037@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2014-05-07 15:44:10 +00:00
parent be47be6c28
commit d07c9f1875
3 changed files with 1 additions and 23 deletions
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2
arch/x86/include/asm/io_apic.h
View File

@ -168,8 +168,6 @@ extern int save_ioapic_entries(void);
extern void mask_ioapic_entries(void);
extern int restore_ioapic_entries(void);
extern int get_nr_irqs_gsi(void);
extern void setup_ioapic_ids_from_mpc(void);
extern void setup_ioapic_ids_from_mpc_nocheck(void);

5
arch/x86/kernel/apic/io_apic.c
View File

@ -3450,11 +3450,6 @@ static void __init probe_nr_irqs_gsi(void)
printk(KERN_DEBUG "nr_irqs_gsi: %d\n", nr_irqs_gsi);
}
int get_nr_irqs_gsi(void)
{
return nr_irqs_gsi;
}
unsigned int arch_dynirq_lower_bound(unsigned int from)
{
return from < nr_irqs_gsi ? nr_irqs_gsi : from;

17
drivers/xen/events/events_base.c
View File

@ -390,22 +390,7 @@ static void xen_irq_init(unsigned irq)
static int __must_check xen_allocate_irqs_dynamic(int nvec)
{
int first = 0;
int i, irq;
#ifdef CONFIG_X86_IO_APIC
/*
* For an HVM guest or domain 0 which see "real" (emulated or
* actual respectively) GSIs we allocate dynamic IRQs
* e.g. those corresponding to event channels or MSIs
* etc. from the range above those "real" GSIs to avoid
* collisions.
*/
if (xen_initial_domain() || xen_hvm_domain())
first = get_nr_irqs_gsi();
#endif
irq = irq_alloc_descs_from(first, nvec, -1);
int i, irq = irq_alloc_descs(-1, 0, nvec, -1);
if (irq >= 0) {
for (i = 0; i < nvec; i++)