Commit-ID: 1fde902d52ee13ab9fab155bbae757fdf7daf0c1
Gitweb: http://git.kernel.org/tip/1fde902d52ee13ab9fab155bbae757fdf7daf0c1
Author: Ingo Molnar <mingo@xxxxxxx>
AuthorDate: Fri, 3 Jul 2009 17:28:57 +0200
Committer: Ingo Molnar <mingo@xxxxxxx>
CommitDate: Fri, 3 Jul 2009 20:23:52 +0200
x86: atomic64: Export APIs to modules
atomic64_t primitives are used by a handful of drivers,
so export the APIs consistently. These were inlined
before.
Also mark atomic64_32.o a core object, so that the symbols
are available even if not linked to core kernel pieces.
Cc: Eric Dumazet <eric.dumazet@xxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: David Howells <dhowells@xxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
LKML-Reference: <tip-05118ab8859492ac9ddda0154cf90e37b0a4a0b0@xxxxxxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
arch/x86/lib/Makefile | 2 +-
arch/x86/lib/atomic64_32.c | 18 ++++++++++++++++++
2 files changed, 19 insertions(+), 1 deletions(-)
diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile
index c3c657c..07c3189 100644
--- a/arch/x86/lib/Makefile
+++ b/arch/x86/lib/Makefile
@@ -10,7 +10,7 @@ lib-y += usercopy_$(BITS).o getuser.o putuser.o
lib-y += memcpy_$(BITS).o
ifeq ($(CONFIG_X86_32),y)
- lib-y += atomic64_32.o
+ obj-y += atomic64_32.o
lib-y += checksum_32.o
lib-y += strstr_32.o
lib-y += semaphore_32.o string_32.o
diff --git a/arch/x86/lib/atomic64_32.c b/arch/x86/lib/atomic64_32.c
index cd11803..6722a09 100644
--- a/arch/x86/lib/atomic64_32.c
+++ b/arch/x86/lib/atomic64_32.c
@@ -1,5 +1,7 @@
#include <linux/compiler.h>
+#include <linux/module.h>
#include <linux/types.h>
+
#include <asm/processor.h>
#include <asm/cmpxchg.h>
#include <asm/atomic.h>
@@ -21,6 +23,7 @@ u64 atomic64_cmpxchg(atomic64_t *ptr, u64 old_val, u64 new_val)
{
return cmpxchg8b(&ptr->counter, old_val, new_val);
}
+EXPORT_SYMBOL(atomic64_cmpxchg);
/**
* atomic64_xchg - xchg atomic64 variable
@@ -41,6 +44,7 @@ u64 atomic64_xchg(atomic64_t *ptr, u64 new_val)
return old_val;
}
+EXPORT_SYMBOL(atomic64_xchg);
/**
* atomic64_set - set atomic64 variable
@@ -53,6 +57,7 @@ void atomic64_set(atomic64_t *ptr, u64 new_val)
{
atomic64_xchg(ptr, new_val);
}
+EXPORT_SYMBOL(atomic64_read);
/**
* atomic64_read - read atomic64 variable
@@ -74,6 +79,7 @@ u64 atomic64_read(atomic64_t *ptr)
return res;
}
+EXPORT_SYMBOL(atomic64_read);
/**
* atomic64_add_return - add and return
@@ -103,21 +109,25 @@ noinline u64 atomic64_add_return(u64 delta, atomic64_t *ptr)
return new_val;
}
+EXPORT_SYMBOL(atomic64_add_return);
u64 atomic64_sub_return(u64 delta, atomic64_t *ptr)
{
return atomic64_add_return(-delta, ptr);
}
+EXPORT_SYMBOL(atomic64_sub_return);
u64 atomic64_inc_return(atomic64_t *ptr)
{
return atomic64_add_return(1, ptr);
}
+EXPORT_SYMBOL(atomic64_inc_return);
u64 atomic64_dec_return(atomic64_t *ptr)
{
return atomic64_sub_return(1, ptr);
}
+EXPORT_SYMBOL(atomic64_dec_return);
/**
* atomic64_add - add integer to atomic64 variable
@@ -130,6 +140,7 @@ void atomic64_add(u64 delta, atomic64_t *ptr)
{
atomic64_add_return(delta, ptr);
}
+EXPORT_SYMBOL(atomic64_add);
/**
* atomic64_sub - subtract the atomic64 variable
@@ -142,6 +153,7 @@ void atomic64_sub(u64 delta, atomic64_t *ptr)
{
atomic64_add(-delta, ptr);
}
+EXPORT_SYMBOL(atomic64_sub);
/**
* atomic64_sub_and_test - subtract value from variable and test result
@@ -158,6 +170,7 @@ int atomic64_sub_and_test(u64 delta, atomic64_t *ptr)
return old_val == 0;
}
+EXPORT_SYMBOL(atomic64_sub_and_test);
/**
* atomic64_inc - increment atomic64 variable
@@ -169,6 +182,7 @@ void atomic64_inc(atomic64_t *ptr)
{
atomic64_add(1, ptr);
}
+EXPORT_SYMBOL(atomic64_inc);
/**
* atomic64_dec - decrement atomic64 variable
@@ -180,6 +194,7 @@ void atomic64_dec(atomic64_t *ptr)
{
atomic64_sub(1, ptr);
}
+EXPORT_SYMBOL(atomic64_dec);
/**
* atomic64_dec_and_test - decrement and test
@@ -193,6 +208,7 @@ int atomic64_dec_and_test(atomic64_t *ptr)
{
return atomic64_sub_and_test(1, ptr);
}
+EXPORT_SYMBOL(atomic64_dec_and_test);
/**
* atomic64_inc_and_test - increment and test
@@ -206,6 +222,7 @@ int atomic64_inc_and_test(atomic64_t *ptr)
{
return atomic64_sub_and_test(-1, ptr);
}
+EXPORT_SYMBOL(atomic64_inc_and_test);
/**
* atomic64_add_negative - add and test if negative
@@ -222,3 +239,4 @@ int atomic64_add_negative(u64 delta, atomic64_t *ptr)
return old_val < 0;
}
+EXPORT_SYMBOL(atomic64_add_negative);
--
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