sgi-xp: replace AMO_t typedef by struct amo

Replace the AMO_t typedef by a direct reference to 'struct amo'.

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>

drivers/misc/sgi-xp/xp_sn2.c

@@ -32,7 +32,7 @@ EXPORT_SYMBOL_GPL(xp_nofault_PIOR_target);
  * If the PIO read times out, the MCA handler will consume the error and
  * return to a kernel-provided instruction to indicate an error. This PIO read
  * exists because it is guaranteed to timeout if the destination is down
- * (AMO operations do not timeout on at least some CPUs on Shubs <= v1.2,
+ * (amo operations do not timeout on at least some CPUs on Shubs <= v1.2,
  * which unfortunately we have to work around).
  */
 static enum xp_retval

drivers/misc/sgi-xp/xpc.h

@@ -38,8 +38,8 @@
 /*
  * The next macros define word or bit representations for given
  * C-brick nasid in either the SAL provided bit array representing
- * nasids in the partition/machine or the AMO_t array used for
- * inter-partition initiation communications.
+ * nasids in the partition/machine or the array of amo structures used
+ * for inter-partition initiation communications.
  *
  * For SN2 machines, C-Bricks are alway even numbered NASIDs.  As
  * such, some space will be saved by insisting that nasid information
@@ -144,26 +144,26 @@ struct xpc_vars_sn2 {
 	int activate_IRQ_nasid;
 	int activate_IRQ_phys_cpuid;
 	u64 vars_part_pa;
-	u64 amos_page_pa;	/* paddr of page of AMOs from MSPEC driver */
-	AMO_t *amos_page;	/* vaddr of page of AMOs from MSPEC driver */
+	u64 amos_page_pa;	/* paddr of page of amos from MSPEC driver */
+	struct amo *amos_page;	/* vaddr of page of amos from MSPEC driver */
 };
 
 #define XPC_V_VERSION _XPC_VERSION(3, 1)    /* version 3.1 of the cross vars */
 
 /*
  * The following pertains to ia64-sn2 only.
  *
- * Memory for XPC's AMO variables is allocated by the MSPEC driver. These
+ * Memory for XPC's amo variables is allocated by the MSPEC driver. These
  * pages are located in the lowest granule. The lowest granule uses 4k pages
  * for cached references and an alternate TLB handler to never provide a
  * cacheable mapping for the entire region. This will prevent speculative
  * reading of cached copies of our lines from being issued which will cause
  * a PI FSB Protocol error to be generated by the SHUB. For XPC, we need 64
- * AMO variables (based on XP_MAX_NPARTITIONS_SN2) to identify the senders of
- * NOTIFY IRQs, 128 AMO variables (based on XP_NASID_MASK_WORDS) to identify
- * the senders of ACTIVATE IRQs, 1 AMO variable to identify which remote
+ * amo variables (based on XP_MAX_NPARTITIONS_SN2) to identify the senders of
+ * NOTIFY IRQs, 128 amo variables (based on XP_NASID_MASK_WORDS) to identify
+ * the senders of ACTIVATE IRQs, 1 amo variable to identify which remote
  * partitions (i.e., XPCs) consider themselves currently engaged with the
- * local XPC and 1 AMO variable to request partition deactivation.
+ * local XPC and 1 amo variable to request partition deactivation.
  */
 #define XPC_NOTIFY_IRQ_AMOS	0
 #define XPC_ACTIVATE_IRQ_AMOS	(XPC_NOTIFY_IRQ_AMOS + XP_MAX_NPARTITIONS_SN2)
@@ -186,7 +186,7 @@ struct xpc_vars_part_sn2 {
 	u64 openclose_args_pa;	/* physical address of open and close args */
 	u64 GPs_pa;		/* physical address of Get/Put values */
 
-	u64 chctl_amo_pa;	/* physical address of chctl flags' AMO_t */
+	u64 chctl_amo_pa;	/* physical address of chctl flags' amo */
 
 	int notify_IRQ_nasid;	/* nasid of where to send notify IRQs */
 	int notify_IRQ_phys_cpuid;	/* CPUID of where to send notify IRQs */
@@ -547,8 +547,8 @@ struct xpc_partition_sn2 {
 	int notify_IRQ_phys_cpuid;	/* CPUID of where to send notify IRQs */
 	char notify_IRQ_owner[8];	/* notify IRQ's owner's name */
 
-	AMO_t *remote_chctl_amo_va; /* address of remote chctl flags' AMO_t */
-	AMO_t *local_chctl_amo_va;	/* address of chctl flags' AMO_t */
+	struct amo *remote_chctl_amo_va; /* addr of remote chctl flags' amo */
+	struct amo *local_chctl_amo_va;	/* address of chctl flags' amo */
 
 	struct timer_list dropped_notify_IRQ_timer;	/* dropped IRQ timer */
 };

drivers/misc/sgi-xp/xpc_main.c

@@ -26,16 +26,16 @@
  *	Caveats:
  *
  *	  . Currently on sn2, we have no way to determine which nasid an IRQ
- *	    came from. Thus, xpc_send_IRQ_sn2() does a remote AMO write
- *	    followed by an IPI. The AMO indicates where data is to be pulled
- *	    from, so after the IPI arrives, the remote partition checks the AMO
- *	    word. The IPI can actually arrive before the AMO however, so other
- *	    code must periodically check for this case. Also, remote AMO
+ *	    came from. Thus, xpc_send_IRQ_sn2() does a remote amo write
+ *	    followed by an IPI. The amo indicates where data is to be pulled
+ *	    from, so after the IPI arrives, the remote partition checks the amo
+ *	    word. The IPI can actually arrive before the amo however, so other
+ *	    code must periodically check for this case. Also, remote amo
  *	    operations do not reliably time out. Thus we do a remote PIO read
  *	    solely to know whether the remote partition is down and whether we
  *	    should stop sending IPIs to it. This remote PIO read operation is
  *	    set up in a special nofault region so SAL knows to ignore (and
- *	    cleanup) any errors due to the remote AMO write, PIO read, and/or
+ *	    cleanup) any errors due to the remote amo write, PIO read, and/or
  *	    PIO write operations.
  *
  *	    If/when new hardware solves this IPI problem, we should abandon
@@ -302,7 +302,7 @@ xpc_hb_checker(void *ignore)
 
 			/*
 			 * We need to periodically recheck to ensure no
-			 * IRQ/AMO pairs have been missed.  That check
+			 * IRQ/amo pairs have been missed.  That check
 			 * must always reset xpc_hb_check_timeout.
 			 */
 			force_IRQ = 1;
@@ -1034,7 +1034,7 @@ xpc_init(void)
 	if (is_shub()) {
 		/*
 		 * The ia64-sn2 architecture supports at most 64 partitions.
-		 * And the inability to unregister remote AMOs restricts us
+		 * And the inability to unregister remote amos restricts us
 		 * further to only support exactly 64 partitions on this
 		 * architecture, no less.
 		 */