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path: root/include/asm-x86_64/ipi.h
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Diffstat (limited to 'include/asm-x86_64/ipi.h')
-rw-r--r--include/asm-x86_64/ipi.h54
1 files changed, 32 insertions, 22 deletions
diff --git a/include/asm-x86_64/ipi.h b/include/asm-x86_64/ipi.h
index ffa6f1517f1..26961e67194 100644
--- a/include/asm-x86_64/ipi.h
+++ b/include/asm-x86_64/ipi.h
@@ -74,10 +74,39 @@ static inline void __send_IPI_shortcut(unsigned int shortcut, int vector, unsign
apic_write(APIC_ICR, cfg);
}
+/*
+ * This is used to send an IPI with no shorthand notation (the destination is
+ * specified in bits 56 to 63 of the ICR).
+ */
+static inline void __send_IPI_dest_field(unsigned int mask, int vector, unsigned int dest)
+{
+ unsigned long cfg;
+
+ /*
+ * Wait for idle.
+ */
+ apic_wait_icr_idle();
+
+ /*
+ * prepare target chip field
+ */
+ cfg = __prepare_ICR2(mask);
+ apic_write(APIC_ICR2, cfg);
+
+ /*
+ * program the ICR
+ */
+ cfg = __prepare_ICR(0, vector, dest);
+
+ /*
+ * Send the IPI. The write to APIC_ICR fires this off.
+ */
+ apic_write(APIC_ICR, cfg);
+}
static inline void send_IPI_mask_sequence(cpumask_t mask, int vector)
{
- unsigned long cfg, flags;
+ unsigned long flags;
unsigned long query_cpu;
/*
@@ -86,28 +115,9 @@ static inline void send_IPI_mask_sequence(cpumask_t mask, int vector)
* - mbligh
*/
local_irq_save(flags);
-
for_each_cpu_mask(query_cpu, mask) {
- /*
- * Wait for idle.
- */
- apic_wait_icr_idle();
-
- /*
- * prepare target chip field
- */
- cfg = __prepare_ICR2(x86_cpu_to_apicid[query_cpu]);
- apic_write(APIC_ICR2, cfg);
-
- /*
- * program the ICR
- */
- cfg = __prepare_ICR(0, vector, APIC_DEST_PHYSICAL);
-
- /*
- * Send the IPI. The write to APIC_ICR fires this off.
- */
- apic_write(APIC_ICR, cfg);
+ __send_IPI_dest_field(x86_cpu_to_apicid[query_cpu],
+ vector, APIC_DEST_PHYSICAL);
}
local_irq_restore(flags);
}