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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/arch/s390/include/asm/cmpxchg.h
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/arch/s390/include/asm/cmpxchg.h')
-rw-r--r--kernel/arch/s390/include/asm/cmpxchg.h32
1 files changed, 3 insertions, 29 deletions
diff --git a/kernel/arch/s390/include/asm/cmpxchg.h b/kernel/arch/s390/include/asm/cmpxchg.h
index 4eadec466..24ea6948e 100644
--- a/kernel/arch/s390/include/asm/cmpxchg.h
+++ b/kernel/arch/s390/include/asm/cmpxchg.h
@@ -32,9 +32,7 @@
__old; \
})
-#define __HAVE_ARCH_CMPXCHG
-
-#define __cmpxchg_double_op(p1, p2, o1, o2, n1, n2, insn) \
+#define __cmpxchg_double(p1, p2, o1, o2, n1, n2) \
({ \
register __typeof__(*(p1)) __old1 asm("2") = (o1); \
register __typeof__(*(p2)) __old2 asm("3") = (o2); \
@@ -42,7 +40,7 @@
register __typeof__(*(p2)) __new2 asm("5") = (n2); \
int cc; \
asm volatile( \
- insn " %[old],%[new],%[ptr]\n" \
+ " cdsg %[old],%[new],%[ptr]\n" \
" ipm %[cc]\n" \
" srl %[cc],28" \
: [cc] "=d" (cc), [old] "+d" (__old1), "+d" (__old2) \
@@ -52,30 +50,6 @@
!cc; \
})
-#define __cmpxchg_double_4(p1, p2, o1, o2, n1, n2) \
- __cmpxchg_double_op(p1, p2, o1, o2, n1, n2, "cds")
-
-#define __cmpxchg_double_8(p1, p2, o1, o2, n1, n2) \
- __cmpxchg_double_op(p1, p2, o1, o2, n1, n2, "cdsg")
-
-extern void __cmpxchg_double_called_with_bad_pointer(void);
-
-#define __cmpxchg_double(p1, p2, o1, o2, n1, n2) \
-({ \
- int __ret; \
- switch (sizeof(*(p1))) { \
- case 4: \
- __ret = __cmpxchg_double_4(p1, p2, o1, o2, n1, n2); \
- break; \
- case 8: \
- __ret = __cmpxchg_double_8(p1, p2, o1, o2, n1, n2); \
- break; \
- default: \
- __cmpxchg_double_called_with_bad_pointer(); \
- } \
- __ret; \
-})
-
#define cmpxchg_double(p1, p2, o1, o2, n1, n2) \
({ \
__typeof__(p1) __p1 = (p1); \
@@ -83,7 +57,7 @@ extern void __cmpxchg_double_called_with_bad_pointer(void);
BUILD_BUG_ON(sizeof(*(p1)) != sizeof(long)); \
BUILD_BUG_ON(sizeof(*(p2)) != sizeof(long)); \
VM_BUG_ON((unsigned long)((__p1) + 1) != (unsigned long)(__p2));\
- __cmpxchg_double_8(__p1, __p2, o1, o2, n1, n2); \
+ __cmpxchg_double(__p1, __p2, o1, o2, n1, n2); \
})
#define system_has_cmpxchg_double() 1