Pass the OS logical cpu number to the PROM. This allows PROM
to log the OS logical cpu number in error records viewed thru POD.
Signed-off-by: Jack Steiner <steiner@xxxxxxx>
---
Add change suggested by Keith...
Index: linux/arch/ia64/sn/kernel/setup.c
===================================================================
--- linux.orig/arch/ia64/sn/kernel/setup.c 2006-04-22 08:50:14.567000831 -0500
+++ linux/arch/ia64/sn/kernel/setup.c 2006-04-27 19:58:16.633858645 -0500
@@ -577,7 +577,8 @@ void __init sn_cpu_init(void)
int i;
static int wars_have_been_checked;
- if (smp_processor_id() == 0 && IS_MEDUSA()) {
+ cpuid = smp_processor_id();
+ if (cpuid == 0 && IS_MEDUSA()) {
if (ia64_sn_is_fake_prom())
sn_prom_type = 2;
else
@@ -597,6 +598,12 @@ void __init sn_cpu_init(void)
sn_hub_info->as_shift = sn_hub_info->nasid_shift - 2;
/*
+ * Don't check status. The SAL call is not supported on all PROMs
+ * but a failure is harmless.
+ */
+ (void) ia64_sn_set_cpu_number(cpuid);
+
+ /*
* The boot cpu makes this call again after platform initialization is
* complete.
*/
@@ -607,7 +614,6 @@ void __init sn_cpu_init(void)
if (ia64_sn_get_prom_feature_set(i, &sn_prom_features[i]) != 0)
break;
- cpuid = smp_processor_id();
cpuphyid = get_sapicid();
if (ia64_sn_get_sapic_info(cpuphyid, &nasid, &subnode, &slice))
Index: linux/include/asm-ia64/sn/sn_sal.h
===================================================================
--- linux.orig/include/asm-ia64/sn/sn_sal.h 2006-04-22 08:50:19.858482442 -0500
+++ linux/include/asm-ia64/sn/sn_sal.h 2006-04-27 17:02:24.654672135 -0500
@@ -85,6 +85,7 @@
#define SN_SAL_GET_PROM_FEATURE_SET 0x02000065
#define SN_SAL_SET_OS_FEATURE_SET 0x02000066
+#define SN_SAL_SET_CPU_NUMBER 0x02000068
/*
* Service-specific constants
@@ -1140,4 +1141,13 @@ ia64_sn_set_os_feature(int feature)
return rv.status;
}
+static inline int
+ia64_sn_set_cpu_number(int cpu)
+{
+ struct ia64_sal_retval rv;
+
+ SAL_CALL_NOLOCK(rv, SN_SAL_SET_CPU_NUMBER, cpu, 0, 0, 0, 0, 0, 0);
+ return rv.status;
+}
+
#endif /* _ASM_IA64_SN_SN_SAL_H */
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