AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

[VOYAGER] add smp_call_function_single

Browse Source 
This apparently has msr users now, so add it to the voyager HAL

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
James Bottomley 2007-04-30 11:24:05 -05:00 committed by James Bottomley
parent de46c33745
commit 0293ca814b
1 changed files with 44 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

57
arch/i386/mach-voyager/voyager_smp.c
View File

@ -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,