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authorJames Bottomley <James.Bottomley@HansenPartnership.com>2007-04-30 20:24:05 +0400
committerJames Bottomley <jejb@hobholes.localdomain>2007-04-30 20:24:05 +0400
commit0293ca814b74e20e77cf719074ee15372204fc55 (patch)
tree913b53600667aae6511cef28740435001f9dfd56 /arch/i386/mach-voyager
parentde46c33745f5e2ad594c72f2cf5f490861b16ce1 (diff)
downloadlinux-0293ca814b74e20e77cf719074ee15372204fc55.tar.xz
[VOYAGER] add smp_call_function_single
This apparently has msr users now, so add it to the voyager HAL Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'arch/i386/mach-voyager')
-rw-r--r--arch/i386/mach-voyager/voyager_smp.c57
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,