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authorSuresh Siddha <suresh.b.siddha@intel.com>2011-05-19 03:31:32 +0400
committerIngo Molnar <mingo@elte.hu>2011-05-20 15:40:50 +0400
commit4c79185cdb1425fb74241d0be772ff1a9913091a (patch)
tree3e1201564d344469d8f7dae05f878e349f7cbd40 /arch
parentb64ce24daffb634b5b3133a2e411bd4de50654e8 (diff)
downloadlinux-4c79185cdb1425fb74241d0be772ff1a9913091a.tar.xz
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 <daniel.blueman@gmail.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Link: http://lkml.kernel.org/r/20110518233157.481404505@sbsiddha-MOBL3.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/apic/io_apic.c27
1 files changed, 13 insertions, 14 deletions
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index df636209193e..8e771d32ada1 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;