On Altix systems, the /proc/irq/nn/smp_affinity mask is not being setup at device iniitalization, or updated after an interrupt redirection. This patch resolves those issues. Signed-off-by: John Keller <jpk@xxxxxxx> --- arch/ia64/sn/kernel/irq.c | 18 +++++++++++++++--- arch/ia64/sn/kernel/msi_sn.c | 4 ---- 2 files changed, 15 insertions(+), 7 deletions(-) Index: release/arch/ia64/sn/kernel/irq.c =================================================================== --- release.orig/arch/ia64/sn/kernel/irq.c 2006-11-06 11:57:34.412002910 -0600 +++ release/arch/ia64/sn/kernel/irq.c 2006-11-06 13:49:19.331005432 -0600 @@ -117,7 +117,10 @@ struct sn_irq_info *sn_retarget_vector(s nasid_t nasid, int slice) { int vector; + int cpuid; +#ifdef CONFIG_SMP int cpuphys; +#endif int64_t bridge; int local_widget, status; nasid_t local_nasid; @@ -146,7 +149,6 @@ struct sn_irq_info *sn_retarget_vector(s vector = sn_irq_info->irq_irq; /* Free the old PROM new_irq_info structure */ sn_intr_free(local_nasid, local_widget, new_irq_info); - /* Update kernels new_irq_info with new target info */ unregister_intr_pda(new_irq_info); /* allocate a new PROM new_irq_info struct */ @@ -160,8 +162,10 @@ struct sn_irq_info *sn_retarget_vector(s return NULL; } - cpuphys = nasid_slice_to_cpuid(nasid, slice); - new_irq_info->irq_cpuid = cpuphys; + /* Update kernels new_irq_info with new target info */ + cpuid = nasid_slice_to_cpuid(new_irq_info->irq_nasid, + new_irq_info->irq_slice); + new_irq_info->irq_cpuid = cpuid; register_intr_pda(new_irq_info); pci_provider = sn_pci_provider[new_irq_info->irq_bridge_type]; @@ -180,6 +184,7 @@ struct sn_irq_info *sn_retarget_vector(s call_rcu(&sn_irq_info->rcu, sn_irq_info_free); #ifdef CONFIG_SMP + cpuphys = cpu_physical_id(cpuid); set_irq_affinity_info((vector & 0xff), cpuphys, 0); #endif @@ -299,6 +304,9 @@ void sn_irq_fixup(struct pci_dev *pci_de nasid_t nasid = sn_irq_info->irq_nasid; int slice = sn_irq_info->irq_slice; int cpu = nasid_slice_to_cpuid(nasid, slice); +#ifdef CONFIG_SMP + int cpuphys; +#endif pci_dev_get(pci_dev); sn_irq_info->irq_cpuid = cpu; @@ -311,6 +319,10 @@ void sn_irq_fixup(struct pci_dev *pci_de spin_unlock(&sn_irq_info_lock); register_intr_pda(sn_irq_info); +#ifdef CONFIG_SMP + cpuphys = cpu_physical_id(cpu); + set_irq_affinity_info(sn_irq_info->irq_irq, cpuphys, 0); +#endif } void sn_irq_unfixup(struct pci_dev *pci_dev) Index: release/arch/ia64/sn/kernel/msi_sn.c =================================================================== --- release.orig/arch/ia64/sn/kernel/msi_sn.c 2006-11-06 11:57:34.412002910 -0600 +++ release/arch/ia64/sn/kernel/msi_sn.c 2006-11-06 11:58:56.045980248 -0600 @@ -136,10 +136,6 @@ int sn_setup_msi_irq(unsigned int irq, s */ msg.data = 0x100 + irq; -#ifdef CONFIG_SMP - set_irq_affinity_info(irq, sn_irq_info->irq_cpuid, 0); -#endif - write_msi_msg(irq, &msg); set_irq_chip_and_handler(irq, &sn_msi_chip, handle_edge_irq); - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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