diff options
author | Yinghai Lu <yhlu.kernel@gmail.com> | 2008-08-19 20:50:52 -0700 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2008-10-16 16:52:58 +0200 |
commit | 9d6a4d0823b3b8e29156f5e698b5a68687afad32 (patch) | |
tree | b3a06b8392f8b451625ad64ad7d51b60456fb388 /arch | |
parent | 8f09cd20a24c5f13c571bc73ddcd47be0af3b70f (diff) | |
download | blackbird-op-linux-9d6a4d0823b3b8e29156f5e698b5a68687afad32.tar.gz blackbird-op-linux-9d6a4d0823b3b8e29156f5e698b5a68687afad32.zip |
x86: probe nr_irqs even only mptable is used
for !CONFIG_HAVE_SPARSE_IRQ
fix:
In file included from arch/x86/kernel/early-quirks.c:18:
include/asm/io_apic.h: In function 'probe_nr_irqs':
include/asm/io_apic.h:209: error: 'NR_IRQS' undeclared (first use in this function)
include/asm/io_apic.h:209: error: (Each undeclared identifier is reported only once
include/asm/io_apic.h:209: error: for each function it appears in.)
v2: fix by Ingo
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/x86/kernel/acpi/boot.c | 25 | ||||
-rw-r--r-- | arch/x86/kernel/io_apic.c | 43 | ||||
-rw-r--r-- | arch/x86/kernel/setup.c | 6 |
3 files changed, 33 insertions, 41 deletions
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 3e9d163fd92f..5fef4fece4a5 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -957,29 +957,6 @@ void __init mp_register_ioapic(int id, u32 address, u32 gsi_base) nr_ioapics++; } -int get_nr_irqs_via_madt(void) -{ - int idx; - int nr = 0; - - for (idx = 0; idx < nr_ioapics; idx++) { - if (mp_ioapic_routing[idx].gsi_end > nr) - nr = mp_ioapic_routing[idx].gsi_end; - } - - nr++; - - /* double it for hotplug and msi and nmi */ - nr <<= 1; - - /* something wrong ? */ - if (nr < 32) - nr = 32; - - return nr; - -} - static void assign_to_mp_irq(struct mp_config_intsrc *m, struct mp_config_intsrc *mp_irq) { @@ -1278,8 +1255,6 @@ static int __init acpi_parse_madt_ioapic_entries(void) } - nr_irqs = get_nr_irqs_via_madt(); - count = acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, nr_irqs); diff --git a/arch/x86/kernel/io_apic.c b/arch/x86/kernel/io_apic.c index f853b667fa5c..f7e80262cbbb 100644 --- a/arch/x86/kernel/io_apic.c +++ b/arch/x86/kernel/io_apic.c @@ -3596,6 +3596,36 @@ int arch_setup_ht_irq(unsigned int irq, struct pci_dev *dev) } #endif /* CONFIG_HT_IRQ */ +int __init io_apic_get_redir_entries (int ioapic) +{ + union IO_APIC_reg_01 reg_01; + unsigned long flags; + + spin_lock_irqsave(&ioapic_lock, flags); + reg_01.raw = io_apic_read(ioapic, 1); + spin_unlock_irqrestore(&ioapic_lock, flags); + + return reg_01.bits.entries; +} + +int __init probe_nr_irqs(void) +{ + int idx; + int nr = 0; + + for (idx = 0; idx < nr_ioapics; idx++) + nr += io_apic_get_redir_entries(idx); + + /* double it for hotplug and msi and nmi */ + nr <<= 1; + + /* something wrong ? */ + if (nr < 32) + nr = 32; + + return nr; +} + /* -------------------------------------------------------------------------- ACPI-based IOAPIC Configuration -------------------------------------------------------------------------- */ @@ -3690,19 +3720,6 @@ int __init io_apic_get_version(int ioapic) } #endif -int __init io_apic_get_redir_entries (int ioapic) -{ - union IO_APIC_reg_01 reg_01; - unsigned long flags; - - spin_lock_irqsave(&ioapic_lock, flags); - reg_01.raw = io_apic_read(ioapic, 1); - spin_unlock_irqrestore(&ioapic_lock, flags); - - return reg_01.bits.entries; -} - - int io_apic_set_pci_routing (int ioapic, int pin, int irq, int triggering, int polarity) { if (!IO_APIC_IRQ(irq)) { diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index d90c659b70e9..61335306696a 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -1069,15 +1069,15 @@ void __init setup_arch(char **cmdline_p) prefill_possible_map(); #ifdef CONFIG_X86_64 - /* need to wait for nr_cpu_ids settle down */ - if (nr_irqs == NR_IRQS) - nr_irqs = 32 * nr_cpu_ids + 224; init_cpu_to_node(); #endif init_apic_mappings(); ioapic_init_mappings(); + /* need to wait for io_apic is mapped */ + nr_irqs = probe_nr_irqs(); + kvm_guest_init(); e820_reserve_resources(); |