diff options
-rw-r--r-- | Documentation/kernel-parameters.txt | 3 | ||||
-rw-r--r-- | arch/ia64/kernel/irq_ia64.c | 26 |
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 | |||
1859 | vdso=1: enable VDSO (default) | 1859 | vdso=1: enable VDSO (default) |
1860 | vdso=0: disable VDSO mapping | 1860 | vdso=0: disable VDSO mapping |
1861 | 1861 | ||
1862 | vector= [IA-64,SMP] | ||
1863 | vector=percpu: enable percpu vector domain | ||
1864 | |||
1862 | video= [FB] Frame buffer configuration | 1865 | video= [FB] Frame buffer configuration |
1863 | See Documentation/fb/modedb.txt. | 1866 | See Documentation/fb/modedb.txt. |
1864 | 1867 | ||
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) | |||
267 | } | 267 | } |
268 | } | 268 | } |
269 | 269 | ||
270 | #if defined(CONFIG_IA64_GENERIC) | ||
271 | static enum vector_domain_type { | ||
272 | VECTOR_DOMAIN_NONE, | ||
273 | VECTOR_DOMAIN_PERCPU | ||
274 | } vector_domain_type = VECTOR_DOMAIN_NONE; | ||
275 | |||
276 | static cpumask_t vector_allocation_domain(int cpu) | ||
277 | { | ||
278 | if (vector_domain_type == VECTOR_DOMAIN_PERCPU) | ||
279 | return cpumask_of_cpu(cpu); | ||
280 | return CPU_MASK_ALL; | ||
281 | } | ||
282 | |||
283 | static int __init parse_vector_domain(char *arg) | ||
284 | { | ||
285 | if (!arg) | ||
286 | return -EINVAL; | ||
287 | if (!strcmp(arg, "percpu")) { | ||
288 | vector_domain_type = VECTOR_DOMAIN_PERCPU; | ||
289 | no_int_routing = 1; | ||
290 | } | ||
291 | return 1; | ||
292 | } | ||
293 | early_param("vector", parse_vector_domain); | ||
294 | #else | ||
270 | static cpumask_t vector_allocation_domain(int cpu) | 295 | static cpumask_t vector_allocation_domain(int cpu) |
271 | { | 296 | { |
272 | return CPU_MASK_ALL; | 297 | return CPU_MASK_ALL; |
273 | } | 298 | } |
299 | #endif | ||
274 | 300 | ||
275 | 301 | ||
276 | void destroy_and_reserve_irq(unsigned int irq) | 302 | void destroy_and_reserve_irq(unsigned int irq) |