From mboxrd@z Thu Jan 1 00:00:00 1970 From: Konrad Rzeszutek Wilk Subject: [PATCH 04/20] x86/io_apic: add get_nr_irqs_gsi() Date: Wed, 4 Aug 2010 14:18:59 -0400 Message-ID: <1280945955-14229-5-git-send-email-konrad.wilk@oracle.com> References: <1280945955-14229-1-git-send-email-konrad.wilk@oracle.com> Return-path: In-Reply-To: <1280945955-14229-1-git-send-email-konrad.wilk@oracle.com> Sender: linux-kernel-owner@vger.kernel.org To: linux-kernel@vger.kernel.org, xen-devel@lists.xensource.com Cc: alex.williamson@redhat.com, Jeremy Fitzhardinge , Konrad Rzeszutek Wilk , Thomas Gleixner , x86@kernel.org, Jesse Barnes List-Id: xen-devel@lists.xenproject.org From: Jeremy Fitzhardinge Impact: new interface to get max GSI Add get_nr_irqs_gsi() to return nr_irqs_gsi. Xen will use this to determine how many irqs it needs to reserve for hardware irqs. Signed-off-by: Jeremy Fitzhardinge Signed-off-by: Konrad Rzeszutek Wilk Reviewed-by: "H. Peter Anvin" Cc: Thomas Gleixner Cc: x86@kernel.org Cc: Jesse Barnes --- arch/x86/include/asm/io_apic.h | 1 + arch/x86/kernel/apic/io_apic.c | 5 +++++ 2 files changed, 6 insertions(+), 0 deletions(-) diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h index 9cb2edb..f27c681 100644 --- a/arch/x86/include/asm/io_apic.h +++ b/arch/x86/include/asm/io_apic.h @@ -169,6 +169,7 @@ extern void mask_IO_APIC_setup(struct IO_APIC_route_entry **ioapic_entries); extern int restore_IO_APIC_setup(struct IO_APIC_route_entry **ioapic_entries); extern void probe_nr_irqs_gsi(void); +extern int get_nr_irqs_gsi(void); extern int setup_ioapic_entry(int apic, int irq, struct IO_APIC_route_entry *entry, diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index e41ed24..8353c40 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -3860,6 +3860,11 @@ 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; +} + #ifdef CONFIG_SPARSE_IRQ int __init arch_probe_nr_irqs(void) { -- 1.7.0.1