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);
-
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