Non-wait version of on_cpu.
Signed-off-by: Marcelo Tosatti <[email protected]>
Index: qemu-kvm-parallel-vmexit/kvm/user/test/lib/x86/smp.c
===================================================================
--- qemu-kvm-parallel-vmexit.orig/kvm/user/test/lib/x86/smp.c
+++ qemu-kvm-parallel-vmexit/kvm/user/test/lib/x86/smp.c
@@ -82,24 +82,38 @@ static void setup_smp_id(void *data)
asm ("mov %0, %%gs:0" : : "r"(apic_id()) : "memory");
}
-void on_cpu(int cpu, void (*function)(void *data), void *data)
+static void __on_cpu(int cpu, void (*function)(void *data), void *data,
+ int wait)
{
spin_lock(&ipi_lock);
if (cpu == smp_id())
function(data);
else {
+ ipi_done = 0;
ipi_function = function;
ipi_data = data;
apic_icr_write(APIC_INT_ASSERT | APIC_DEST_PHYSICAL | APIC_DM_FIXED
| IPI_VECTOR,
cpu);
- while (!ipi_done)
- ;
- ipi_done = 0;
+ if (wait) {
+ while (!ipi_done)
+ ;
+ }
}
spin_unlock(&ipi_lock);
}
+void on_cpu(int cpu, void (*function)(void *data), void *data)
+{
+ __on_cpu(cpu, function, data, 1);
+}
+
+void on_cpu_async(int cpu, void (*function)(void *data), void *data)
+{
+ __on_cpu(cpu, function, data, 0);
+}
+
+
void smp_init(void)
{
int i;
Index: qemu-kvm-parallel-vmexit/kvm/user/test/lib/x86/smp.h
===================================================================
--- qemu-kvm-parallel-vmexit.orig/kvm/user/test/lib/x86/smp.h
+++ qemu-kvm-parallel-vmexit/kvm/user/test/lib/x86/smp.h
@@ -10,6 +10,7 @@ void smp_init(void);
int cpu_count(void);
int smp_id(void);
void on_cpu(int cpu, void (*function)(void *data), void *data);
+void on_cpu_async(int cpu, void (*function)(void *data), void *data);
void spin_lock(struct spinlock *lock);
void spin_unlock(struct spinlock *lock);
--
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