diff options
| -rw-r--r-- | arch/i386/mach-voyager/voyager_smp.c | 57 |
1 files changed, 44 insertions, 13 deletions
diff --git a/arch/i386/mach-voyager/voyager_smp.c b/arch/i386/mach-voyager/voyager_smp.c index 74aeedf277f4..a126baeaa423 100644 --- a/arch/i386/mach-voyager/voyager_smp.c +++ b/arch/i386/mach-voyager/voyager_smp.c @@ -1082,20 +1082,11 @@ smp_call_function_interrupt(void) } } -/* Call this function on all CPUs using the function_interrupt above - <func> The function to run. This must be fast and non-blocking. - <info> An arbitrary pointer to pass to the function. - <retry> If true, keep retrying until ready. - <wait> If true, wait 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. -*/ -int -smp_call_function (void (*func) (void *info), void *info, int retry, - int wait) +static int +__smp_call_function_mask (void (*func) (void *info), void *info, int retry, + int wait, __u32 mask) { struct call_data_struct data; - __u32 mask = cpus_addr(cpu_online_map)[0]; mask &= ~(1<<smp_processor_id()); @@ -1116,7 +1107,7 @@ smp_call_function (void (*func) (void *info), void *info, int retry, call_data = &data; wmb(); /* Send a message to all other CPUs and wait for them to respond */ - send_CPI_allbutself(VIC_CALL_FUNCTION_CPI); + send_CPI(mask, VIC_CALL_FUNCTION_CPI); /* Wait for response */ while (data.started) @@ -1130,8 +1121,48 @@ smp_call_function (void (*func) (void *info), void *info, int retry, return 0; } + +/* Call this function on all CPUs using the function_interrupt above + <func> The function to run. This must be fast and non-blocking. + <info> An arbitrary pointer to pass to the function. + <retry> If true, keep retrying until ready. + <wait> If true, wait 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. +*/ +int +smp_call_function(void (*func) (void *info), void *info, int retry, + int wait) +{ + __u32 mask = cpus_addr(cpu_online_map)[0]; + + return __smp_call_function_mask(func, info, retry, wait, mask); +} EXPORT_SYMBOL(smp_call_function); +/* + * smp_call_function_single - Run a function on another 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. + * @wait: If true, wait until function has completed on other CPUs. + * + * Retrurns 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. + */ + +int +smp_call_function_single(int cpu, void (*func) (void *info), void *info, + int nonatomic, int wait) +{ + __u32 mask = 1 << cpu; + + return __smp_call_function_mask(func, info, nonatomic, wait, mask); +} +EXPORT_SYMBOL(smp_call_function_single); + /* Sorry about the name. In an APIC based system, the APICs * themselves are programmed to send a timer interrupt. This is used * by linux to reschedule the processor. Voyager doesn't have this, |