add sparc64 timer pulling support

4 files changed, 30 insertions, 0 deletions

diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index 55f1ebd74f..e0d85ff881 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -906,6 +906,7 @@ extern unsigned long xcall_flush_tlb_kernel_range;
 extern unsigned long xcall_report_regs;
 extern unsigned long xcall_receive_signal;
 extern unsigned long xcall_new_mmu_context_version;
+extern unsigned long xcall_pull_timers;
 
 #ifdef DCACHE_ALIASING_POSSIBLE
 extern unsigned long xcall_flush_dcache_page_cheetah;
@@ -1422,6 +1423,24 @@ void smp_send_reschedule(int cpu)
         smp_receive_signal(cpu);
 }
 
+void smp_send_pull_timers(int cpu)
+{
+        cpumask_t mask = cpumask_of_cpu(cpu);
+
+        if (cpu_online(cpu))
+                smp_cross_call_masked(&xcall_pull_timers, 0, 0, 0, mask);
+}
+
+void hrtimer_pull(void);
+
+void smp_pull_timers_client(int irq, struct pt_regs *regs)
+{
+        clear_softint(1 << irq);
+        TRACE("pull timers interrupt\n");
+        hrtimer_pull();
+}
+
+
 /* This is a nop because we capture all other cpus
  * anyways when making the PROM active.
  */
diff --git a/arch/sparc64/kernel/ttable.S b/arch/sparc64/kernel/ttable.S
index 7575aa371d..65a23d3b9d 100644
--- a/arch/sparc64/kernel/ttable.S
+++ b/arch/sparc64/kernel/ttable.S
@@ -58,7 +58,12 @@ tl0_irq3:	BTRAP(0x43)
 tl0_irq4:       BTRAP(0x44)
 #endif
 tl0_irq5:       TRAP_IRQ(handler_irq, 5)
+#ifdef CONFIG_SMP
+tl0_irq6:       TRAP_IRQ(smp_pull_timers_client, 6)
+tl0_irq7:       BTRAP(0x47) BTRAP(0x48) BTRAP(0x49)
+#else
 tl0_irq6:       BTRAP(0x46) BTRAP(0x47) BTRAP(0x48) BTRAP(0x49)
+#endif
 tl0_irq10:      BTRAP(0x4a) BTRAP(0x4b) BTRAP(0x4c) BTRAP(0x4d)
 tl0_irq14:      TRAP_IRQ(timer_interrupt, 14)
 tl0_irq15:      TRAP_IRQ(handler_irq, 15)
diff --git a/arch/sparc64/mm/ultra.S b/arch/sparc64/mm/ultra.S
index 2865c105b6..3f158cf42c 100644
--- a/arch/sparc64/mm/ultra.S
+++ b/arch/sparc64/mm/ultra.S
@@ -678,6 +678,11 @@ xcall_new_mmu_context_version:
         wr              %g0, (1 << PIL_SMP_CTX_NEW_VERSION), %set_softint
         retry
 
+        .globl          xcall_pull_timers
+xcall_pull_timers:
+        wr              %g0, (1 << PIL_SMP_PULL_TIMERS), %set_softint
+        retry
+
 #endif /* CONFIG_SMP */
 
 
diff --git a/include/asm-sparc64/pil.h b/include/asm-sparc64/pil.h
index 72927749ae..5b36432668 100644
--- a/include/asm-sparc64/pil.h
+++ b/include/asm-sparc64/pil.h
@@ -18,6 +18,7 @@
 #define PIL_SMP_CAPTURE         3
 #define PIL_SMP_CTX_NEW_VERSION 4
 #define PIL_DEVICE_IRQ          5
+#define PIL_SMP_PULL_TIMERS     6
 
 #ifndef __ASSEMBLY__
 #define PIL_RESERVED(PIL)       ((PIL) == PIL_SMP_CALL_FUNC || \