X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fasm-s390%2Fsystem.h;h=6a89dbb03c1e363e86870718e2633fdbc112a6d3;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=8565a8aee7354fb70f8ea8704b693b06eb5b0638;hpb=6a77f38946aaee1cd85eeec6cf4229b204c15071;p=linux-2.6.git

diff --git a/include/asm-s390/system.h b/include/asm-s390/system.h
index 8565a8aee..6a89dbb03 100644
--- a/include/asm-s390/system.h
+++ b/include/asm-s390/system.h
@@ -16,6 +16,7 @@
 #include <asm/types.h>
 #include <asm/ptrace.h>
 #include <asm/setup.h>
+#include <asm/processor.h>
 
 #ifdef __KERNEL__
 
@@ -103,29 +104,29 @@ static inline void restore_access_regs(unsigned int *acrs)
 	prev = __switch_to(prev,next);					     \
 } while (0)
 
-#define prepare_arch_switch(rq, next)	do { } while(0)
-#define task_running(rq, p)		((rq)->curr == (p))
+/*
+ * On SMP systems, when the scheduler does migration-cost autodetection,
+ * it needs a way to flush as much of the CPU's caches as possible.
+ *
+ * TODO: fill this in!
+ */
+static inline void sched_cacheflush(void)
+{
+}
 
 #ifdef CONFIG_VIRT_CPU_ACCOUNTING
-extern void account_user_vtime(struct task_struct *);
+extern void account_vtime(struct task_struct *);
+extern void account_tick_vtime(struct task_struct *);
 extern void account_system_vtime(struct task_struct *);
-
-#define finish_arch_switch(rq, prev) do {				     \
-	set_fs(current->thread.mm_segment);				     \
-	spin_unlock(&(rq)->lock);					     \
-	account_system_vtime(prev);					     \
-	local_irq_enable();						     \
-} while (0)
-
 #else
+#define account_vtime(x) do { /* empty */ } while (0)
+#endif
 
-#define finish_arch_switch(rq, prev) do {				     \
+#define finish_arch_switch(prev) do {					     \
 	set_fs(current->thread.mm_segment);				     \
-	spin_unlock_irq(&(rq)->lock);					     \
+	account_vtime(prev);						     \
 } while (0)
 
-#endif
-
 #define nop() __asm__ __volatile__ ("nop")
 
 #define xchg(ptr,x) \
@@ -331,23 +332,24 @@ __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, int size)
 
 #ifdef __s390x__
 
-#define __load_psw(psw) \
-        __asm__ __volatile__("lpswe 0(%0)" : : "a" (&psw), "m" (psw) : "cc" );
-
 #define __ctl_load(array, low, high) ({ \
+	typedef struct { char _[sizeof(array)]; } addrtype; \
 	__asm__ __volatile__ ( \
 		"   bras  1,0f\n" \
                 "   lctlg 0,0,0(%0)\n" \
 		"0: ex    %1,0(1)" \
-		: : "a" (&array), "a" (((low)<<4)+(high)) : "1" ); \
+		: : "a" (&array), "a" (((low)<<4)+(high)), \
+		    "m" (*(addrtype *)(array)) : "1" ); \
 	})
 
 #define __ctl_store(array, low, high) ({ \
+	typedef struct { char _[sizeof(array)]; } addrtype; \
 	__asm__ __volatile__ ( \
 		"   bras  1,0f\n" \
 		"   stctg 0,0,0(%1)\n" \
 		"0: ex    %2,0(1)" \
-		: "=m" (array) : "a" (&array), "a" (((low)<<4)+(high)) : "1" ); \
+		: "=m" (*(addrtype *)(array)) \
+		: "a" (&array), "a" (((low)<<4)+(high)) : "1" ); \
 	})
 
 #define __ctl_set_bit(cr, bit) ({ \
@@ -386,23 +388,24 @@ __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, int size)
 
 #else /* __s390x__ */
 
-#define __load_psw(psw) \
-	__asm__ __volatile__("lpsw 0(%0)" : : "a" (&psw) : "cc" );
-
 #define __ctl_load(array, low, high) ({ \
+	typedef struct { char _[sizeof(array)]; } addrtype; \
 	__asm__ __volatile__ ( \
 		"   bras  1,0f\n" \
                 "   lctl 0,0,0(%0)\n" \
 		"0: ex    %1,0(1)" \
-		: : "a" (&array), "a" (((low)<<4)+(high)) : "1" ); \
+		: : "a" (&array), "a" (((low)<<4)+(high)), \
+		    "m" (*(addrtype *)(array)) : "1" ); \
 	})
 
 #define __ctl_store(array, low, high) ({ \
+	typedef struct { char _[sizeof(array)]; } addrtype; \
 	__asm__ __volatile__ ( \
 		"   bras  1,0f\n" \
 		"   stctl 0,0,0(%1)\n" \
 		"0: ex    %2,0(1)" \
-		: "=m" (array) : "a" (&array), "a" (((low)<<4)+(high)): "1" ); \
+		: "=m" (*(addrtype *)(array)) \
+		: "a" (&array), "a" (((low)<<4)+(high)): "1" ); \
 	})
 
 #define __ctl_set_bit(cr, bit) ({ \
@@ -443,6 +446,20 @@ __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, int size)
 /* For spinlocks etc */
 #define local_irq_save(x)	((x) = local_irq_disable())
 
+/*
+ * Use to set psw mask except for the first byte which
+ * won't be changed by this function.
+ */
+static inline void
+__set_psw_mask(unsigned long mask)
+{
+	local_save_flags(mask);
+	__load_psw_mask(mask);
+}
+
+#define local_mcck_enable()  __set_psw_mask(PSW_KERNEL_BITS)
+#define local_mcck_disable() __set_psw_mask(PSW_KERNEL_BITS & ~PSW_MASK_MCHECK)
+
 #ifdef CONFIG_SMP
 
 extern void smp_ctl_set_bit(int cr, int bit);
@@ -461,6 +478,8 @@ extern void (*_machine_restart)(char *command);
 extern void (*_machine_halt)(void);
 extern void (*_machine_power_off)(void);
 
+#define arch_align_stack(x) (x)
+
 #endif /* __KERNEL__ */
 
 #endif