[S390] pfault code cleanup.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

3 files changed, 5 insertions, 41 deletions

diff --git a/arch/s390/kernel/machine_kexec.c b/arch/s390/kernel/machine_kexec.c
index def5caf8f72f..f6d9bcc0f75b 100644
--- a/arch/s390/kernel/machine_kexec.c
+++ b/arch/s390/kernel/machine_kexec.c
@@ -49,18 +49,12 @@ void machine_shutdown(void)
         printk(KERN_INFO "kexec: machine_shutdown called\n");
 }
 
-extern void pfault_fini(void);
-
 void machine_kexec(struct kimage *image)
 {
         relocate_kernel_t data_mover;
 
-        preempt_disable();
-#ifdef CONFIG_PFAULT
-        if (MACHINE_IS_VM)
-                pfault_fini();
-#endif
         smp_send_stop();
+        pfault_fini();
         s390_reset_system();
 
         data_mover = (relocate_kernel_t) page_to_phys(image->control_code_page);
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index b549a43ed08f..19090f7d4f51 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -460,8 +460,6 @@ __init smp_count_cpus(void)
  */
 extern void init_cpu_timer(void);
 extern void init_cpu_vtimer(void);
-extern int pfault_init(void);
-extern void pfault_fini(void);
 
 int __devinit start_secondary(void *cpuvoid)
 {
@@ -473,11 +471,9 @@ int __devinit start_secondary(void *cpuvoid)
 #ifdef CONFIG_VIRT_TIMER
         init_cpu_vtimer();
 #endif
-#ifdef CONFIG_PFAULT
         /* Enable pfault pseudo page faults on this cpu. */
-        if (MACHINE_IS_VM)
-                pfault_init();
-#endif
+        pfault_init();
+
         /* Mark this cpu as online */
         cpu_set(smp_processor_id(), cpu_online_map);
         /* Switch on interrupts */
@@ -667,11 +663,8 @@ __cpu_disable(void)
         }
         cpu_clear(cpu, cpu_online_map);
 
-#ifdef CONFIG_PFAULT
         /* Disable pfault pseudo page faults on this cpu. */
-        if (MACHINE_IS_VM)
-                pfault_fini();
-#endif
+        pfault_fini();
 
         memset(&cr_parms.orvals, 0, sizeof(cr_parms.orvals));
         memset(&cr_parms.andvals, 0xff, sizeof(cr_parms.andvals));
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index 92ecffbc8d82..475dbb884430 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -58,12 +58,6 @@ int sysctl_userprocess_debug = 0;
 
 extern pgm_check_handler_t do_protection_exception;
 extern pgm_check_handler_t do_dat_exception;
-#ifdef CONFIG_PFAULT
-extern int pfault_init(void);
-extern void pfault_fini(void);
-extern void pfault_interrupt(__u16 error_code);
-static ext_int_info_t ext_int_pfault;
-#endif
 extern pgm_check_handler_t do_monitor_call;
 
 #define stack_pointer ({ void **sp; asm("la %0,0(15)" : "=&d" (sp)); sp; })
@@ -739,22 +733,5 @@ void __init trap_init(void)
         pgm_check_table[0x1C] = &space_switch_exception;
         pgm_check_table[0x1D] = &hfp_sqrt_exception;
         pgm_check_table[0x40] = &do_monitor_call;
-
-        if (MACHINE_IS_VM) {
-#ifdef CONFIG_PFAULT
-                /*
-                 * Try to get pfault pseudo page faults going.
-                 */
-                if (register_early_external_interrupt(0x2603, pfault_interrupt,
-                                                      &ext_int_pfault) != 0)
-                        panic("Couldn't request external interrupt 0x2603");
-
-                if (pfault_init() == 0) 
-                        return;
-                
-                /* Tough luck, no pfault. */
-                unregister_early_external_interrupt(0x2603, pfault_interrupt,
-                                                    &ext_int_pfault);
-#endif
-        }
+        pfault_irq_init();
 }