2 files changed, 56 insertions, 1 deletions

diff --git a/arch/sparc/kernel/irq_32.c b/arch/sparc/kernel/irq_32.c
index 197e1ba8548..9b89d842913 100644
--- a/arch/sparc/kernel/irq_32.c
+++ b/arch/sparc/kernel/irq_32.c
@@ -206,6 +206,16 @@ int arch_show_interrupts(struct seq_file *p, int prec)
 {
 	int j;
 
+#ifdef CONFIG_SMP
+	seq_printf(p, "RES: ");
+	for_each_online_cpu(j)
+		seq_printf(p, "%10u ", cpu_data(j).irq_resched_count);
+	seq_printf(p, "     IPI rescheduling interrupts\n");
+	seq_printf(p, "CAL: ");
+	for_each_online_cpu(j)
+		seq_printf(p, "%10u ", cpu_data(j).irq_call_count);
+	seq_printf(p, "     IPI function call interrupts\n");
+#endif
 	seq_printf(p, "NMI: ");
 	for_each_online_cpu(j)
 		seq_printf(p, "%10u ", cpu_data(j).counter);
diff --git a/arch/sparc/kernel/smp_32.c b/arch/sparc/kernel/smp_32.c
index 4a1d5b7f20d..2710602281d 100644
--- a/arch/sparc/kernel/smp_32.c
+++ b/arch/sparc/kernel/smp_32.c
@@ -123,13 +123,58 @@ struct linux_prom_registers smp_penguin_ctable __cpuinitdata = { 0 };
 
 void smp_send_reschedule(int cpu)
 {
-	/* See sparc64 */
+	/*
+	 * CPU model dependent way of implementing IPI generation targeting
+	 * a single CPU. The trap handler needs only to do trap entry/return
+	 * to call schedule.
+	 */
+	BTFIXUP_CALL(smp_ipi_resched)(cpu);
 }
 
 void smp_send_stop(void)
 {
 }
 
+void arch_send_call_function_single_ipi(int cpu)
+{
+	/* trigger one IPI single call on one CPU */
+	BTFIXUP_CALL(smp_ipi_single)(cpu);
+}
+
+void arch_send_call_function_ipi_mask(const struct cpumask *mask)
+{
+	int cpu;
+
+	/* trigger IPI mask call on each CPU */
+	for_each_cpu(cpu, mask)
+		BTFIXUP_CALL(smp_ipi_mask_one)(cpu);
+}
+
+void smp_resched_interrupt(void)
+{
+	local_cpu_data().irq_resched_count++;
+	/*
+	 * do nothing, since it all was about calling re-schedule
+	 * routine called by interrupt return code.
+	 */
+}
+
+void smp_call_function_single_interrupt(void)
+{
+	irq_enter();
+	generic_smp_call_function_single_interrupt();
+	local_cpu_data().irq_call_count++;
+	irq_exit();
+}
+
+void smp_call_function_interrupt(void)
+{
+	irq_enter();
+	generic_smp_call_function_interrupt();
+	local_cpu_data().irq_call_count++;
+	irq_exit();
+}
+
 void smp_flush_cache_all(void)
 {
 	xc0((smpfunc_t) BTFIXUP_CALL(local_flush_cache_all));