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authorLinus Torvalds <torvalds@linux-foundation.org>2010-10-21 14:37:27 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-21 14:37:27 -0700
commite36f561a2c88394ef2708f1ab300fe8a79e9f651 (patch)
tree385f378c4240955e4356d49686a8ef606a82a7c1 /arch/s390
parent70ada77920723fbc2b35e9b301022fb1e166b41b (diff)
parentdf9ee29270c11dba7d0fe0b83ce47a4d8e8d2101 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-irqflags
* git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-irqflags: Fix IRQ flag handling naming MIPS: Add missing #inclusions of <linux/irq.h> smc91x: Add missing #inclusion of <linux/irq.h> Drop a couple of unnecessary asm/system.h inclusions SH: Add missing consts to sys_execve() declaration Blackfin: Rename IRQ flags handling functions Blackfin: Add missing dep to asm/irqflags.h Blackfin: Rename DES PC2() symbol to avoid collision Blackfin: Split the BF532 BFIN_*_FIO_FLAG() functions to their own header Blackfin: Split PLL code from mach-specific cdef headers
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/include/asm/irqflags.h51
-rw-r--r--arch/s390/include/asm/system.h2
-rw-r--r--arch/s390/kernel/mem_detect.c4
-rw-r--r--arch/s390/mm/init.c3
-rw-r--r--arch/s390/mm/maccess.c4
5 files changed, 34 insertions, 30 deletions
diff --git a/arch/s390/include/asm/irqflags.h b/arch/s390/include/asm/irqflags.h
index 15b3ac25389..865d6d891ac 100644
--- a/arch/s390/include/asm/irqflags.h
+++ b/arch/s390/include/asm/irqflags.h
@@ -8,8 +8,8 @@
#include <linux/types.h>
-/* store then or system mask. */
-#define __raw_local_irq_stosm(__or) \
+/* store then OR system mask. */
+#define __arch_local_irq_stosm(__or) \
({ \
unsigned long __mask; \
asm volatile( \
@@ -18,8 +18,8 @@
__mask; \
})
-/* store then and system mask. */
-#define __raw_local_irq_stnsm(__and) \
+/* store then AND system mask. */
+#define __arch_local_irq_stnsm(__and) \
({ \
unsigned long __mask; \
asm volatile( \
@@ -29,39 +29,44 @@
})
/* set system mask. */
-#define __raw_local_irq_ssm(__mask) \
-({ \
- asm volatile("ssm %0" : : "Q" (__mask) : "memory"); \
-})
+static inline void __arch_local_irq_ssm(unsigned long flags)
+{
+ asm volatile("ssm %0" : : "Q" (flags) : "memory");
+}
-/* interrupt control.. */
-static inline unsigned long raw_local_irq_enable(void)
+static inline unsigned long arch_local_save_flags(void)
{
- return __raw_local_irq_stosm(0x03);
+ return __arch_local_irq_stosm(0x00);
}
-static inline unsigned long raw_local_irq_disable(void)
+static inline unsigned long arch_local_irq_save(void)
{
- return __raw_local_irq_stnsm(0xfc);
+ return __arch_local_irq_stnsm(0xfc);
}
-#define raw_local_save_flags(x) \
-do { \
- typecheck(unsigned long, x); \
- (x) = __raw_local_irq_stosm(0x00); \
-} while (0)
+static inline void arch_local_irq_disable(void)
+{
+ arch_local_irq_save();
+}
-static inline void raw_local_irq_restore(unsigned long flags)
+static inline void arch_local_irq_enable(void)
{
- __raw_local_irq_ssm(flags);
+ __arch_local_irq_stosm(0x03);
}
-static inline int raw_irqs_disabled_flags(unsigned long flags)
+static inline void arch_local_irq_restore(unsigned long flags)
+{
+ __arch_local_irq_ssm(flags);
+}
+
+static inline bool arch_irqs_disabled_flags(unsigned long flags)
{
return !(flags & (3UL << (BITS_PER_LONG - 8)));
}
-/* For spinlocks etc */
-#define raw_local_irq_save(x) ((x) = raw_local_irq_disable())
+static inline bool arch_irqs_disabled(void)
+{
+ return arch_irqs_disabled_flags(arch_local_save_flags());
+}
#endif /* __ASM_IRQFLAGS_H */
diff --git a/arch/s390/include/asm/system.h b/arch/s390/include/asm/system.h
index 38ddd8a9a9e..1f2ebc4afd8 100644
--- a/arch/s390/include/asm/system.h
+++ b/arch/s390/include/asm/system.h
@@ -398,7 +398,7 @@ static inline unsigned long __cmpxchg_local(volatile void *ptr,
static inline void
__set_psw_mask(unsigned long mask)
{
- __load_psw_mask(mask | (__raw_local_irq_stosm(0x00) & ~(-1UL >> 8)));
+ __load_psw_mask(mask | (arch_local_save_flags() & ~(-1UL >> 8)));
}
#define local_mcck_enable() __set_psw_mask(psw_kernel_bits)
diff --git a/arch/s390/kernel/mem_detect.c b/arch/s390/kernel/mem_detect.c
index 559af0d0787..0fbe4e32f7b 100644
--- a/arch/s390/kernel/mem_detect.c
+++ b/arch/s390/kernel/mem_detect.c
@@ -54,11 +54,11 @@ void detect_memory_layout(struct mem_chunk chunk[])
* right thing and we don't get scheduled away with low address
* protection disabled.
*/
- flags = __raw_local_irq_stnsm(0xf8);
+ flags = __arch_local_irq_stnsm(0xf8);
__ctl_store(cr0, 0, 0);
__ctl_clear_bit(0, 28);
find_memory_chunks(chunk);
__ctl_load(cr0, 0, 0);
- __raw_local_irq_ssm(flags);
+ arch_local_irq_restore(flags);
}
EXPORT_SYMBOL(detect_memory_layout);
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index 30eb6d02ddb..94b8ba2ec85 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -50,7 +50,6 @@ EXPORT_SYMBOL(empty_zero_page);
*/
void __init paging_init(void)
{
- static const int ssm_mask = 0x04000000L;
unsigned long max_zone_pfns[MAX_NR_ZONES];
unsigned long pgd_type;
@@ -72,7 +71,7 @@ void __init paging_init(void)
__ctl_load(S390_lowcore.kernel_asce, 1, 1);
__ctl_load(S390_lowcore.kernel_asce, 7, 7);
__ctl_load(S390_lowcore.kernel_asce, 13, 13);
- __raw_local_irq_ssm(ssm_mask);
+ arch_local_irq_restore(4UL << (BITS_PER_LONG - 8));
atomic_set(&init_mm.context.attach_count, 1);
diff --git a/arch/s390/mm/maccess.c b/arch/s390/mm/maccess.c
index a8c2af8c650..71a4b0d34be 100644
--- a/arch/s390/mm/maccess.c
+++ b/arch/s390/mm/maccess.c
@@ -71,7 +71,7 @@ int memcpy_real(void *dest, void *src, size_t count)
if (!count)
return 0;
- flags = __raw_local_irq_stnsm(0xf8UL);
+ flags = __arch_local_irq_stnsm(0xf8UL);
asm volatile (
"0: mvcle %1,%2,0x0\n"
"1: jo 0b\n"
@@ -82,6 +82,6 @@ int memcpy_real(void *dest, void *src, size_t count)
"+d" (_len2), "=m" (*((long *) dest))
: "m" (*((long *) src))
: "cc", "memory");
- __raw_local_irq_ssm(flags);
+ arch_local_irq_restore(flags);
return rc;
}