diff options
Diffstat (limited to 'include/asm-s390/system.h')
| -rw-r--r-- | include/asm-s390/system.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/asm-s390/system.h b/include/asm-s390/system.h index 92098df4d6e3..c819ae25a842 100644 --- a/include/asm-s390/system.h +++ b/include/asm-s390/system.h @@ -16,6 +16,7 @@ #include <asm/ptrace.h> #include <asm/setup.h> #include <asm/processor.h> +#include <asm/lowcore.h> #ifdef __KERNEL__ @@ -422,6 +423,23 @@ extern void smp_ctl_clear_bit(int cr, int bit); #endif /* CONFIG_SMP */ +static inline unsigned int stfl(void) +{ + asm volatile( + " .insn s,0xb2b10000,0(0)\n" /* stfl */ + "0:\n" + EX_TABLE(0b,0b)); + return S390_lowcore.stfl_fac_list; +} + +static inline unsigned short stap(void) +{ + unsigned short cpu_address; + + asm volatile("stap %0" : "=m" (cpu_address)); + return cpu_address; +} + extern void (*_machine_restart)(char *command); extern void (*_machine_halt)(void); extern void (*_machine_power_off)(void); |