From 4c79185cdb1425fb74241d0be772ff1a9913091a Mon Sep 17 00:00:00 2001 From: Suresh Siddha Date: Wed, 18 May 2011 16:31:32 -0700 Subject: [PATCH] x86, ioapic: Allocate ioapic_saved_data early This allows re-using this buffer for enabling interrupt-remapping during boot and resume. And thus allow for consolidating the code between ioapic suspend/resume and interrupt-remapping. Tested-by: Daniel J Blueman Signed-off-by: Suresh Siddha Link: http://lkml.kernel.org/r/20110518233157.481404505@sbsiddha-MOBL3.sc.intel.com Signed-off-by: Ingo Molnar --- arch/x86/kernel/apic/io_apic.c | 27 +++++++++++++-------------- 1 file changed, 13 insertions(+), 14 deletions(-) diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index df63620..8e771d3 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -100,6 +100,11 @@ int mp_irq_entries; /* GSI interrupts */ static int nr_irqs_gsi = NR_IRQS_LEGACY; +/* + * Saved I/O APIC state during suspend/resume. +*/ +static struct IO_APIC_route_entry *ioapic_saved_data[MAX_IO_APICS]; + #if defined (CONFIG_MCA) || defined (CONFIG_EISA) int mp_bus_id_to_type[MAX_MP_BUSSES]; #endif @@ -179,6 +184,14 @@ int __init arch_early_irq_init(void) io_apic_irqs = ~0UL; } + for (i = 0; i < nr_ioapics; i++) { + ioapic_saved_data[i] = + kzalloc(sizeof(struct IO_APIC_route_entry) * + nr_ioapic_registers[i], GFP_KERNEL); + if (!ioapic_saved_data[i]) + pr_err("IOAPIC %d: suspend/resume impossible!\n", i); + } + cfg = irq_cfgx; count = ARRAY_SIZE(irq_cfgx); node = cpu_to_node(0); @@ -2918,8 +2931,6 @@ static int __init io_apic_bug_finalize(void) late_initcall(io_apic_bug_finalize); -static struct IO_APIC_route_entry *ioapic_saved_data[MAX_IO_APICS]; - static void suspend_ioapic(int ioapic_id) { struct IO_APIC_route_entry *saved_data = ioapic_saved_data[ioapic_id]; @@ -2978,18 +2989,6 @@ static struct syscore_ops ioapic_syscore_ops = { static int __init ioapic_init_ops(void) { - int i; - - for (i = 0; i < nr_ioapics; i++) { - unsigned int size; - - size = nr_ioapic_registers[i] - * sizeof(struct IO_APIC_route_entry); - ioapic_saved_data[i] = kzalloc(size, GFP_KERNEL); - if (!ioapic_saved_data[i]) - pr_err("IOAPIC %d: suspend/resume impossible!\n", i); - } - register_syscore_ops(&ioapic_syscore_ops); return 0; -- 2.7.4