diff options
| -rw-r--r-- | arch/i386/kernel/smp.c | 25 |
1 files changed, 15 insertions, 10 deletions
diff --git a/arch/i386/kernel/smp.c b/arch/i386/kernel/smp.c index fe38b49a1223..9d84f6f001bf 100644 --- a/arch/i386/kernel/smp.c +++ b/arch/i386/kernel/smp.c @@ -554,8 +554,10 @@ static void __smp_call_function(void (*func) (void *info), void *info, * @info: An arbitrary pointer to pass to the function. * @wait: If true, wait (atomically) until function has completed on other CPUs. * - * Returns 0 on success, else a negative status code. Does not return until - * remote CPUs are nearly ready to execute <<func>> or are or have finished. + * Returns 0 on success, else a negative status code. + * + * If @wait is true, then returns once @func has returned; otherwise + * it returns just before the target cpu calls @func. * * You must not call this function with disabled interrupts or from a * hardware interrupt handler or from a bottom half handler. @@ -617,11 +619,13 @@ int native_smp_call_function_mask(cpumask_t mask, * smp_call_function(): Run a function on all other CPUs. * @func: The function to run. This must be fast and non-blocking. * @info: An arbitrary pointer to pass to the function. - * @nonatomic: currently unused. + * @nonatomic: Unused. * @wait: If true, wait (atomically) until function has completed on other CPUs. * - * Returns 0 on success, else a negative status code. Does not return until - * remote CPUs are nearly ready to execute <<func>> or are or have executed. + * Returns 0 on success, else a negative status code. + * + * If @wait is true, then returns once @func has returned; otherwise + * it returns just before the target cpu calls @func. * * You must not call this function with disabled interrupts or from a * hardware interrupt handler or from a bottom half handler. @@ -633,17 +637,18 @@ int smp_call_function(void (*func) (void *info), void *info, int nonatomic, } EXPORT_SYMBOL(smp_call_function); -/* +/** * smp_call_function_single - Run a function on another CPU + * @cpu: The target CPU. Cannot be the calling CPU. * @func: The function to run. This must be fast and non-blocking. * @info: An arbitrary pointer to pass to the function. - * @nonatomic: Currently unused. + * @nonatomic: Unused. * @wait: If true, wait until function has completed on other CPUs. * - * Retrurns 0 on success, else a negative status code. + * Returns 0 on success, else a negative status code. * - * Does not return until the remote CPU is nearly ready to execute <func> - * or is or has executed. + * If @wait is true, then returns once @func has returned; otherwise + * it returns just before the target cpu calls @func. */ int smp_call_function_single(int cpu, void (*func) (void *info), void *info, int nonatomic, int wait) |