sgi-xp: isolate remote copy buffer to sn2 only

Make the remote copy buffer an sn2 only item.

Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 11 insertions, 20 deletions

diff --git a/drivers/misc/sgi-xp/xpc_partition.c b/drivers/misc/sgi-xp/xpc_partition.c
index c769ab8f74ef..9f104450478f 100644
--- a/drivers/misc/sgi-xp/xpc_partition.c
+++ b/drivers/misc/sgi-xp/xpc_partition.c
@@ -34,21 +34,12 @@ struct xpc_rsvd_page *xpc_rsvd_page;
 static u64 *xpc_part_nasids;
 u64 *xpc_mach_nasids;
 
-/* >>> next two variables should be 'xpc_' if they remain here */
-static int xp_sizeof_nasid_mask;        /* actual size in bytes of nasid mask */
-int xp_nasid_mask_words;        /* actual size in words of nasid mask */
+static int xpc_sizeof_nasid_mask;       /* actual size in bytes of nasid mask */
+int xpc_nasid_mask_words;       /* actual size in words of nasid mask */
 
 struct xpc_partition *xpc_partitions;
 
 /*
- * Generic buffer used to store a local copy of portions of a remote
- * partition's reserved page (either its header and part_nasids mask,
- * or its vars).
- */
-char *xpc_remote_copy_buffer;
-void *xpc_remote_copy_buffer_base;
-
-/*
  * Guarantee that the kmalloc'd memory is cacheline aligned.
  */
 void *
@@ -176,9 +167,9 @@ xpc_setup_rsvd_page(void)
                 /* SAL_version 1 didn't set the nasids_size field */
                 rp->SAL_nasids_size = 128;
         }
-        xp_sizeof_nasid_mask = rp->SAL_nasids_size;
-        xp_nasid_mask_words = DIV_ROUND_UP(xp_sizeof_nasid_mask,
-                                           BYTES_PER_WORD);
+        xpc_sizeof_nasid_mask = rp->SAL_nasids_size;
+        xpc_nasid_mask_words = DIV_ROUND_UP(xpc_sizeof_nasid_mask,
+                                            BYTES_PER_WORD);
 
         /* setup the pointers to the various items in the reserved page */
         xpc_part_nasids = XPC_RP_PART_NASIDS(rp);
@@ -222,14 +213,14 @@ xpc_get_remote_rp(int nasid, u64 *discovered_nasids,
 
         /* pull over the reserved page header and part_nasids mask */
         ret = xp_remote_memcpy(remote_rp, (void *)*remote_rp_pa,
-                               XPC_RP_HEADER_SIZE + xp_sizeof_nasid_mask);
+                               XPC_RP_HEADER_SIZE + xpc_sizeof_nasid_mask);
         if (ret != xpSuccess)
                 return ret;
 
         if (discovered_nasids != NULL) {
                 u64 *remote_part_nasids = XPC_RP_PART_NASIDS(remote_rp);
 
-                for (i = 0; i < xp_nasid_mask_words; i++)
+                for (i = 0; i < xpc_nasid_mask_words; i++)
                         discovered_nasids[i] |= remote_part_nasids[i];
         }
 
@@ -414,12 +405,12 @@ xpc_discovery(void)
         enum xp_retval ret;
 
         remote_rp = xpc_kmalloc_cacheline_aligned(XPC_RP_HEADER_SIZE +
-                                                  xp_sizeof_nasid_mask,
+                                                  xpc_sizeof_nasid_mask,
                                                   GFP_KERNEL, &remote_rp_base);
         if (remote_rp == NULL)
                 return;
 
-        discovered_nasids = kzalloc(sizeof(u64) * xp_nasid_mask_words,
+        discovered_nasids = kzalloc(sizeof(u64) * xpc_nasid_mask_words,
                                     GFP_KERNEL);
         if (discovered_nasids == NULL) {
                 kfree(remote_rp_base);
@@ -521,10 +512,10 @@ xpc_initiate_partid_to_nasids(short partid, void *nasid_mask)
         if (part->remote_rp_pa == 0)
                 return xpPartitionDown;
 
-        memset(nasid_mask, 0, XP_NASID_MASK_BYTES);
+        memset(nasid_mask, 0, xpc_sizeof_nasid_mask);
 
         part_nasid_pa = (u64)XPC_RP_PART_NASIDS(part->remote_rp_pa);
 
         return xp_remote_memcpy(nasid_mask, (void *)part_nasid_pa,
-                                xp_sizeof_nasid_mask);
+                                xpc_sizeof_nasid_mask);
 }