diff options
| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2011-01-05 12:47:39 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2011-01-05 12:47:26 +0100 |
| commit | fb0a9d7e865afdae70829a64bb004a74ff67d29f (patch) | |
| tree | 91747a95a38e165cc9bb7a725fda73d22a8f20a7 /arch/s390 | |
| parent | 62d146ffe3adfed2747fc36138476c8417ce73a7 (diff) | |
| download | linux-3.10-fb0a9d7e865afdae70829a64bb004a74ff67d29f.tar.gz linux-3.10-fb0a9d7e865afdae70829a64bb004a74ff67d29f.tar.bz2 linux-3.10-fb0a9d7e865afdae70829a64bb004a74ff67d29f.zip | |
[S390] pfault: delay register of pfault interrupt
Use an early init call to initialize pfault. That way it is possible to
use the register_external_interrupt() instead of the early variant.
No need to enable pfault any earlier since it has only effect if user
space processes are running.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/system.h | 2 | ||||
| -rw-r--r-- | arch/s390/kernel/traps.c | 1 | ||||
| -rw-r--r-- | arch/s390/mm/fault.c | 27 |
3 files changed, 15 insertions, 15 deletions
diff --git a/arch/s390/include/asm/system.h b/arch/s390/include/asm/system.h index 3ad16dbf622..4ab2779fdb0 100644 --- a/arch/s390/include/asm/system.h +++ b/arch/s390/include/asm/system.h @@ -101,11 +101,9 @@ extern void account_vtime(struct task_struct *, struct task_struct *); extern void account_tick_vtime(struct task_struct *); #ifdef CONFIG_PFAULT -extern void pfault_irq_init(void); extern int pfault_init(void); extern void pfault_fini(void); #else /* CONFIG_PFAULT */ -#define pfault_irq_init() do { } while (0) #define pfault_init() ({-1;}) #define pfault_fini() do { } while (0) #endif /* CONFIG_PFAULT */ diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c index bc4f32fcfa5..f6342ec084a 100644 --- a/arch/s390/kernel/traps.c +++ b/arch/s390/kernel/traps.c @@ -733,5 +733,4 @@ void __init trap_init(void) pgm_check_table[0x15] = &operand_exception; pgm_check_table[0x1C] = &space_switch_exception; pgm_check_table[0x1D] = &hfp_sqrt_exception; - pfault_irq_init(); } diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c index 839b16df72b..dccb85d9153 100644 --- a/arch/s390/mm/fault.c +++ b/arch/s390/mm/fault.c @@ -481,8 +481,7 @@ int __handle_fault(unsigned long uaddr, unsigned long pgm_int_code, int write) /* * 'pfault' pseudo page faults routines. */ -static ext_int_info_t ext_int_pfault; -static int pfault_disable = 0; +static int pfault_disable; static int __init nopfault(char *str) { @@ -594,24 +593,28 @@ static void pfault_interrupt(unsigned int ext_int_code, } } -void __init pfault_irq_init(void) +static int __init pfault_irq_init(void) { - if (!MACHINE_IS_VM) - return; + int rc; + if (!MACHINE_IS_VM) + return 0; /* * 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"); - + rc = register_external_interrupt(0x2603, pfault_interrupt); + if (rc) { + pfault_disable = 1; + return rc; + } if (pfault_init() == 0) - return; + return 0; /* Tough luck, no pfault. */ pfault_disable = 1; - unregister_early_external_interrupt(0x2603, pfault_interrupt, - &ext_int_pfault); + unregister_external_interrupt(0x2603, pfault_interrupt); + return 0; } +early_initcall(pfault_irq_init); + #endif |