Another step in the effort to eliminate the SN pda structure.
This patch moves the cnodeid_to_nasid_table field out of the pda,
making it a standalone per-cpu data item, and exports it so it can
be accessed by kernel modules.
Signed-off-by: Dean Nelson <[EMAIL PROTECTED]>
Index: linux-2.6/include/asm-ia64/sn/pda.h
===================================================================
--- linux-2.6.orig/include/asm-ia64/sn/pda.h 2005-03-21 09:33:28.657196704
-0600
+++ linux-2.6/include/asm-ia64/sn/pda.h 2005-03-21 09:33:28.783171960 -0600
@@ -49,7 +49,6 @@
unsigned long sn_soft_irr[4];
unsigned long sn_in_service_ivecs[4];
- short cnodeid_to_nasid_table[MAX_NUMNODES];
int sn_lb_int_war_ticks;
int sn_last_irq;
int sn_first_irq;
Index: linux-2.6/include/asm-ia64/sn/sn_cpuid.h
===================================================================
--- linux-2.6.orig/include/asm-ia64/sn/sn_cpuid.h 2005-03-21
09:33:28.503877981 -0600
+++ linux-2.6/include/asm-ia64/sn/sn_cpuid.h 2005-03-21 10:06:22.752760405
-0600
@@ -4,7 +4,7 @@
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
- * Copyright (C) 2000-2004 Silicon Graphics, Inc. All rights reserved.
+ * Copyright (C) 2000-2005 Silicon Graphics, Inc. All rights reserved.
*/
@@ -123,11 +123,8 @@
/*
* cnodeid_to_nasid - convert a cnodeid to a NASID
- * Macro relies on pg_data for a node being on the node itself.
- * Just extract the NASID from the pointer.
- *
*/
-#define cnodeid_to_nasid(cnodeid) pda->cnodeid_to_nasid_table[cnodeid]
+#define cnodeid_to_nasid(cnodeid) (sn_cnodeid_to_nasid[cnodeid])
/*
* nasid_to_cnodeid - convert a NASID to a cnodeid
Index: linux-2.6/include/asm-ia64/sn/arch.h
===================================================================
--- linux-2.6.orig/include/asm-ia64/sn/arch.h 2005-03-21 09:33:28.540986971
-0600
+++ linux-2.6/include/asm-ia64/sn/arch.h 2005-03-21 10:55:47.249275028
-0600
@@ -5,7 +5,7 @@
*
* SGI specific setup.
*
- * Copyright (C) 1995-1997,1999,2001-2004 Silicon Graphics, Inc. All rights
reserved.
+ * Copyright (C) 1995-1997,1999,2001-2005 Silicon Graphics, Inc. All rights
reserved.
* Copyright (C) 1999 Ralf Baechle ([EMAIL PROTECTED])
*/
#ifndef _ASM_IA64_SN_ARCH_H
@@ -47,6 +47,15 @@
#define MAX_COMPACT_NODES 2048
#define CPUS_PER_NODE 4
+
+/*
+ * Compact node ID to nasid mappings kept in the per-cpu data areas of each
+ * cpu.
+ */
+DECLARE_PER_CPU(short, __sn_cnodeid_to_nasid[MAX_NUMNODES]);
+#define sn_cnodeid_to_nasid (&__get_cpu_var(__sn_cnodeid_to_nasid[0]))
+
+
extern void sn_flush_all_caches(long addr, long bytes);
#endif /* _ASM_IA64_SN_ARCH_H */
Index: linux-2.6/arch/ia64/sn/kernel/setup.c
===================================================================
--- linux-2.6.orig/arch/ia64/sn/kernel/setup.c 2005-03-21 09:33:28.548799390
-0600
+++ linux-2.6/arch/ia64/sn/kernel/setup.c 2005-03-21 11:02:47.545462823
-0600
@@ -3,7 +3,7 @@
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
- * Copyright (C) 1999,2001-2004 Silicon Graphics, Inc. All rights reserved.
+ * Copyright (C) 1999,2001-2005 Silicon Graphics, Inc. All rights reserved.
*/
#include <linux/config.h>
@@ -72,6 +72,9 @@
DEFINE_PER_CPU(struct sn_hub_info_s, __sn_hub_info);
EXPORT_PER_CPU_SYMBOL(__sn_hub_info);
+DEFINE_PER_CPU(short, __sn_cnodeid_to_nasid[MAX_NUMNODES]);
+EXPORT_PER_CPU_SYMBOL(__sn_cnodeid_to_nasid);
+
partid_t sn_partid = -1;
EXPORT_SYMBOL(sn_partid);
char sn_system_serial_number_string[128];
@@ -364,11 +367,11 @@
{
cnodeid_t cnode;
- memset(pda->cnodeid_to_nasid_table, -1,
- sizeof(pda->cnodeid_to_nasid_table));
+ memset(sn_cnodeid_to_nasid, -1,
+ sizeof(__ia64_per_cpu_var(__sn_cnodeid_to_nasid)));
for_each_online_node(cnode)
- pda->cnodeid_to_nasid_table[cnode] =
- pxm_to_nasid(nid_to_pxm_map[cnode]);
+ sn_cnodeid_to_nasid[cnode] =
+ pxm_to_nasid(nid_to_pxm_map[cnode]);
numionodes = num_online_nodes();
scan_for_ionodes();
@@ -477,15 +480,18 @@
pda->idle_flag = 0;
if (cpuid != 0) {
- memcpy(pda->cnodeid_to_nasid_table,
- pdacpu(0)->cnodeid_to_nasid_table,
- sizeof(pda->cnodeid_to_nasid_table));
+ /* copy cpu 0's sn_cnodeid_to_nasid table to this cpu's */
+ memcpy(sn_cnodeid_to_nasid,
+ (&per_cpu(__sn_cnodeid_to_nasid, 0)),
+ sizeof(__ia64_per_cpu_var(__sn_cnodeid_to_nasid)));
}
/*
* Check for WARs.
* Only needs to be done once, on BSP.
- * Has to be done after loop above, because it uses
pda.cnodeid_to_nasid_table[i].
+ * Has to be done after loop above, because it uses this cpu's
+ * sn_cnodeid_to_nasid table which was just initialized if this
+ * isn't cpu 0.
* Has to be done before assignment below.
*/
if (!wars_have_been_checked) {
@@ -571,8 +577,7 @@
brd = find_lboard_any(brd, KLTYPE_SNIA);
while (brd) {
- pda->cnodeid_to_nasid_table[numionodes] =
- brd->brd_nasid;
+ sn_cnodeid_to_nasid[numionodes] = brd->brd_nasid;
physical_node_map[brd->brd_nasid] = numionodes;
root_lboard[numionodes] = brd;
numionodes++;
@@ -593,8 +598,7 @@
root_lboard[nasid_to_cnodeid(nasid)],
KLTYPE_TIO);
while (brd) {
- pda->cnodeid_to_nasid_table[numionodes] =
- brd->brd_nasid;
+ sn_cnodeid_to_nasid[numionodes] = brd->brd_nasid;
physical_node_map[brd->brd_nasid] = numionodes;
root_lboard[numionodes] = brd;
numionodes++;
@@ -605,7 +609,6 @@
brd = find_lboard_any(brd, KLTYPE_TIO);
}
}
-
}
int
-
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