diff options
Diffstat (limited to 'arch/x86/include/asm/mp.h')
| -rw-r--r-- | arch/x86/include/asm/mp.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/x86/include/asm/mp.h b/arch/x86/include/asm/mp.h index 41b1575f4b..eb49e690f2 100644 --- a/arch/x86/include/asm/mp.h +++ b/arch/x86/include/asm/mp.h @@ -86,4 +86,37 @@ int mp_init(void); /* Set up additional CPUs */ int x86_mp_init(void); +/** + * mp_run_func() - Function to call on the AP + * + * @arg: Argument to pass + */ +typedef void (*mp_run_func)(void *arg); + +#if defined(CONFIG_SMP) && !CONFIG_IS_ENABLED(X86_64) +/** + * mp_run_on_cpus() - Run a function on one or all CPUs + * + * This does not return until all CPUs have completed the work + * + * Running on anything other than the boot CPU is only supported if + * CONFIG_SMP_AP_WORK is enabled + * + * @cpu_select: CPU to run on (its dev->req_seq value), or MP_SELECT_ALL for + * all, or MP_SELECT_BSP for BSP + * @func: Function to run + * @arg: Argument to pass to the function + * @return 0 on success, -ve on error + */ +int mp_run_on_cpus(int cpu_select, mp_run_func func, void *arg); +#else +static inline int mp_run_on_cpus(int cpu_select, mp_run_func func, void *arg) +{ + /* There is only one CPU, so just call the function here */ + func(arg); + + return 0; +} +#endif + #endif /* _X86_MP_H_ */ |