From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ishimatsu Yasuaki Date: Wed, 09 May 2007 07:57:08 +0000 Subject: [PATCH 11/12] Enable percpu vector domain for IA64_GENERIC Message-Id: <46417ED4.4080009@jp.fujitsu.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org Add per-CPU vector domain support for IA64_GENERIC. It is enabled by adding the "vector=percpu" boot option. Signed-off-by: Kenji Kaneshige Signed-off-by: Yasuaki Ishimatsu --- arch/ia64/kernel/irq_ia64.c | 26 ++++++++++++++++++++++++++ 1 files changed, 26 insertions(+) Index: linux-2.6.21/arch/ia64/kernel/irq_ia64.c =================================--- linux-2.6.21.orig/arch/ia64/kernel/irq_ia64.c 2007-05-08 12:13:39.000000000 +0900 +++ linux-2.6.21/arch/ia64/kernel/irq_ia64.c 2007-05-08 12:14:11.000000000 +0900 @@ -227,10 +227,36 @@ } } +#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 static int __reassign_irq_vector(int irq, int cpu) {