# This is a BitKeeper generated patch for the following project:
# Project Name: Linux kernel tree
# This patch format is intended for GNU patch command version 2.5 or higher.
# This patch includes the following deltas:
#	           ChangeSet	1.1386  -> 1.1387 
#	     kernel/module.c	1.88    -> 1.89   
#	include/linux/module.h	1.66    -> 1.67   
#
# The following is the BitKeeper ChangeSet Log
# --------------------------------------------
# 03/07/15	davidm@tiger.hpl.hp.com	1.1373.1.101
# ia64: Change per-CPU implementation so that __get_cpu_var() returns the
# 	canonical address (l-value).  To get the virtually mapped
# 	alias (which is more efficient), use __ia64_per_cpu_var().  The
# 	latter is safe only if the address of the l-value is never passed
# 	to another CPU (i.e., not stored in any global place).
# 	For extremely efficient, portable per-CPU variables, there is
# 	now a new API local.h which was introduced by Rusty Russell.
# 	To use this, declare a variable of type local_t as a per-CPU
# 	variable and then use {__,}cpu_local_FOO() to manipulate such
# 	variables.  This patch also updated the atomic interface with
# 	a 64-bit counter.
# --------------------------------------------
# 03/07/15	rusty@rustcorp.com.au	1.1387
# [PATCH] Use local_t for module reference counts
# 
# --------------------------------------------
#
diff -Nru a/include/linux/module.h b/include/linux/module.h
--- a/include/linux/module.h	Wed Jul 16 00:39:27 2003
+++ b/include/linux/module.h	Wed Jul 16 00:39:27 2003
@@ -16,6 +16,7 @@
 #include <linux/kmod.h>
 #include <linux/elf.h>
 #include <linux/stringify.h>
+#include <asm/local.h>
 
 #include <asm/module.h>
 
@@ -171,7 +172,7 @@
 
 struct module_ref
 {
-	atomic_t count;
+	local_t count;
 } ____cacheline_aligned;
 
 enum module_state
@@ -282,12 +283,6 @@
 void __symbol_put(const char *symbol);
 #define symbol_put(x) __symbol_put(MODULE_SYMBOL_PREFIX #x)
 void symbol_put_addr(void *addr);
-
-/* We only need protection against local interrupts. */
-#ifndef __HAVE_ARCH_LOCAL_INC
-#define local_inc(x) atomic_inc(x)
-#define local_dec(x) atomic_dec(x)
-#endif
 
 /* Sometimes we know we already have a refcount, and it's easier not
    to handle the error case (which only happens with rmmod --wait). */
diff -Nru a/kernel/module.c b/kernel/module.c
--- a/kernel/module.c	Wed Jul 16 00:39:27 2003
+++ b/kernel/module.c	Wed Jul 16 00:39:27 2003
@@ -374,9 +374,9 @@
 
 	INIT_LIST_HEAD(&mod->modules_which_use_me);
 	for (i = 0; i < NR_CPUS; i++)
-		atomic_set(&mod->ref[i].count, 0);
+		local_set(&mod->ref[i].count, 0);
 	/* Hold reference count during initialization. */
-	atomic_set(&mod->ref[smp_processor_id()].count, 1);
+	local_set(&mod->ref[smp_processor_id()].count, 1);
 	/* Backwards compatibility macros put refcount during init. */
 	mod->waiter = current;
 }
@@ -599,7 +599,7 @@
 	unsigned int i, total = 0;
 
 	for (i = 0; i < NR_CPUS; i++)
-		total += atomic_read(&mod->ref[i].count);
+		total += local_read(&mod->ref[i].count);
 	return total;
 }
 EXPORT_SYMBOL(module_refcount);