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s390/percpu: use generic percpu ops for CONFIG_32BIT 

Remove the special cases for the this_cpu_* functions for 32 bit
in order to make it easier to add additional code for 64 bit.
32 bit will use the generic implementation.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens 2013-10-21 07:44:08 +02:00 committed by Martin Schwidefsky
parent f26946d7ec
commit 0702fbf572
1 changed files with 7 additions and 19 deletions
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26
arch/s390/include/asm/percpu.h
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@ -10,12 +10,14 @@
*/
#define __my_cpu_offset S390_lowcore.percpu_offset
#ifdef CONFIG_64BIT
/*
* For 64 bit module code, the module may be more than 4G above the
* per cpu area, use weak definitions to force the compiler to
* generate external references.
*/
#if defined(CONFIG_SMP) && defined(CONFIG_64BIT) && defined(MODULE)
#if defined(CONFIG_SMP) && defined(MODULE)
#define ARCH_NEEDS_WEAK_PER_CPU
#endif
@ -30,13 +32,7 @@
do { \
old__ = prev__; \
new__ = old__ op (val); \
switch (sizeof(*ptr__)) { \
case 8: \
prev__ = cmpxchg64(ptr__, old__, new__); \
break; \
default: \
prev__ = cmpxchg(ptr__, old__, new__); \
} \
prev__ = cmpxchg(ptr__, old__, new__); \
} while (prev__ != old__); \
preempt_enable(); \
new__; \
@ -74,13 +70,7 @@
pcp_op_T__ *ptr__; \
preempt_disable(); \
ptr__ = __this_cpu_ptr(&(pcp)); \
switch (sizeof(*ptr__)) { \
case 8: \
ret__ = cmpxchg64(ptr__, oval, nval); \
break; \
default: \
ret__ = cmpxchg(ptr__, oval, nval); \
} \
ret__ = cmpxchg(ptr__, oval, nval); \
preempt_enable(); \
ret__; \
})
@ -104,9 +94,7 @@
#define this_cpu_xchg_1(pcp, nval) arch_this_cpu_xchg(pcp, nval)
#define this_cpu_xchg_2(pcp, nval) arch_this_cpu_xchg(pcp, nval)
#define this_cpu_xchg_4(pcp, nval) arch_this_cpu_xchg(pcp, nval)
#ifdef CONFIG_64BIT
#define this_cpu_xchg_8(pcp, nval) arch_this_cpu_xchg(pcp, nval)
#endif
#define arch_this_cpu_cmpxchg_double(pcp1, pcp2, o1, o2, n1, n2) \
({ \
@ -124,9 +112,9 @@
})
#define this_cpu_cmpxchg_double_4 arch_this_cpu_cmpxchg_double
#ifdef CONFIG_64BIT
#define this_cpu_cmpxchg_double_8 arch_this_cpu_cmpxchg_double
#endif
#endif /* CONFIG_64BIT */
#include <asm-generic/percpu.h>