riscv: Enable generic clockevent broadcast

[linux-2.6-microblaze.git] / arch / riscv / kernel / smp.c

diff --git a/arch/riscv/kernel/smp.c b/arch/riscv/kernel/smp.c
index ea028d9..8325d33 100644 (file)
--- a/arch/riscv/kernel/smp.c
+++ b/arch/riscv/kernel/smp.c
@@ -9,6 +9,7 @@
  */
 
 #include <linux/cpu.h>
+#include <linux/clockchips.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/profile.h>
@@ -27,6 +28,7 @@ enum ipi_message_type {
        IPI_CALL_FUNC,
        IPI_CPU_STOP,
        IPI_IRQ_WORK,
+       IPI_TIMER,
        IPI_MAX
 };
 
@@ -176,6 +178,12 @@ void handle_IPI(struct pt_regs *regs)
                        irq_work_run();
                }
 
+#ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
+               if (ops & (1 << IPI_TIMER)) {
+                       stats[IPI_TIMER]++;
+                       tick_receive_broadcast();
+               }
+#endif
                BUG_ON((ops >> IPI_MAX) != 0);
 
                /* Order data access and bit testing. */
@@ -192,6 +200,7 @@ static const char * const ipi_names[] = {
        [IPI_CALL_FUNC]         = "Function call interrupts",
        [IPI_CPU_STOP]          = "CPU stop interrupts",
        [IPI_IRQ_WORK]          = "IRQ work interrupts",
+       [IPI_TIMER]             = "Timer broadcast interrupts",
 };
 
 void show_ipi_stats(struct seq_file *p, int prec)
@@ -217,6 +226,13 @@ void arch_send_call_function_single_ipi(int cpu)
        send_ipi_single(cpu, IPI_CALL_FUNC);
 }
 
+#ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
+void tick_broadcast(const struct cpumask *mask)
+{
+       send_ipi_mask(mask, IPI_TIMER);
+}
+#endif
+
 void smp_send_stop(void)
 {
        unsigned long timeout;