[IA64-SGI] - New SN hardware support - ptc_fixes

Shub2 provides a much improved mechanism for issuing internode
TLB purges. Add code to support the newer mechanism. There is also 
some debug code (disabled) that is useful for testing.

Collect statistics on the number, type & duration of TLB purges.
This data will be useful for making future improvements in the algorithms.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/asm-ia64/sn/nodepda.h b/include/asm-ia64/sn/nodepda.h
index 7138b1eafd6b..47bb8100fd00 100644
--- a/include/asm-ia64/sn/nodepda.h
+++ b/include/asm-ia64/sn/nodepda.h
@@ -37,7 +37,6 @@ struct phys_cpuid {
 
 struct nodepda_s {
         void            *pdinfo;        /* Platform-dependent per-node info */
-        spinlock_t              bist_lock;
 
         /*
          * The BTEs on this node are shared by the local cpus
@@ -55,6 +54,8 @@ struct nodepda_s {
          * Array of physical cpu identifiers. Indexed by cpuid.
          */
         struct phys_cpuid       phys_cpuid[NR_CPUS];
+        spinlock_t              ptc_lock ____cacheline_aligned_in_smp;
+        spinlock_t              bist_lock;
 };
 
 typedef struct nodepda_s nodepda_t;