aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--Documentation/kernel-parameters.txt3
-rw-r--r--arch/ia64/kernel/irq_ia64.c26
2 files changed, 29 insertions, 0 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 8363ad3ba01..c48bc2e159c 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1859,6 +1859,9 @@ and is between 256 and 4096 characters. It is defined in the file
vdso=1: enable VDSO (default)
vdso=0: disable VDSO mapping
+ vector= [IA-64,SMP]
+ vector=percpu: enable percpu vector domain
+
video= [FB] Frame buffer configuration
See Documentation/fb/modedb.txt.
diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
index 22806b94025..5cb804f9a1f 100644
--- a/arch/ia64/kernel/irq_ia64.c
+++ b/arch/ia64/kernel/irq_ia64.c
@@ -267,10 +267,36 @@ void __setup_vector_irq(int cpu)
}
}
+#if defined(CONFIG_IA64_GENERIC)
+static enum vector_domain_type {
+ VECTOR_DOMAIN_NONE,
+ VECTOR_DOMAIN_PERCPU
+} vector_domain_type = VECTOR_DOMAIN_NONE;
+
+static cpumask_t vector_allocation_domain(int cpu)
+{
+ if (vector_domain_type == VECTOR_DOMAIN_PERCPU)
+ return cpumask_of_cpu(cpu);
+ return CPU_MASK_ALL;
+}
+
+static int __init parse_vector_domain(char *arg)
+{
+ if (!arg)
+ return -EINVAL;
+ if (!strcmp(arg, "percpu")) {
+ vector_domain_type = VECTOR_DOMAIN_PERCPU;
+ no_int_routing = 1;
+ }
+ return 1;
+}
+early_param("vector", parse_vector_domain);
+#else
static cpumask_t vector_allocation_domain(int cpu)
{
return CPU_MASK_ALL;
}
+#endif
void destroy_and_reserve_irq(unsigned int irq)