diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index a56630d4f14b84479ca6ad6202aa122af7bd7dee..63a027c9ada5aabf99fdea93c2f355e431076cce 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -28,7 +28,7 @@ config SPARC
select HAVE_GENERIC_HARDIRQS
select GENERIC_HARDIRQS_NO_DEPRECATED
select GENERIC_IRQ_SHOW
-
+ select USE_GENERIC_SMP_HELPERS if SMP
config SPARC32
def_bool !64BIT
@@ -47,7 +47,6 @@ config SPARC64
select HAVE_DYNAMIC_FTRACE
select HAVE_FTRACE_MCOUNT_RECORD
select HAVE_SYSCALL_TRACEPOINTS
- select USE_GENERIC_SMP_HELPERS if SMP
select RTC_DRV_CMOS
select RTC_DRV_BQ4802
select RTC_DRV_SUN4V
diff --git a/arch/sparc/include/asm/cpudata_32.h b/arch/sparc/include/asm/cpudata_32.h
index 31d48a0e32c7cd3cd3b4eda72325229496f00411..a4c5a938b93663669923f11b786d1f8127992f12 100644
--- a/arch/sparc/include/asm/cpudata_32.h
+++ b/arch/sparc/include/asm/cpudata_32.h
@@ -16,6 +16,10 @@ typedef struct {
unsigned long clock_tick;
unsigned int multiplier;
unsigned int counter;
+#ifdef CONFIG_SMP
+ unsigned int irq_resched_count;
+ unsigned int irq_call_count;
+#endif
int prom_node;
int mid;
int next;
@@ -23,5 +27,6 @@ typedef struct {
DECLARE_PER_CPU(cpuinfo_sparc, __cpu_data);
#define cpu_data(__cpu) per_cpu(__cpu_data, (__cpu))
+#define local_cpu_data() __get_cpu_var(__cpu_data)
#endif /* _SPARC_CPUDATA_H */
diff --git a/arch/sparc/include/asm/smp_32.h b/arch/sparc/include/asm/smp_32.h
index d7837dcb252506e908ef0f63718642af6af4dad4..7a8e6cbd640c68d7f7b475b30fe7aadeefcc9cd7 100644
--- a/arch/sparc/include/asm/smp_32.h
+++ b/arch/sparc/include/asm/smp_32.h
@@ -50,12 +50,19 @@ void smp_callin(void);
void smp_boot_cpus(void);
void smp_store_cpu_info(int);
+void smp_resched_interrupt(void);
+void smp_call_function_single_interrupt(void);
+void smp_call_function_interrupt(void);
+
struct seq_file;
void smp_bogo(struct seq_file *);
void smp_info(struct seq_file *);
BTFIXUPDEF_CALL(void, smp_cross_call, smpfunc_t, cpumask_t, unsigned long, unsigned long, unsigned long, unsigned long)
BTFIXUPDEF_CALL(int, __hard_smp_processor_id, void)
+BTFIXUPDEF_CALL(void, smp_ipi_resched, int);
+BTFIXUPDEF_CALL(void, smp_ipi_single, int);
+BTFIXUPDEF_CALL(void, smp_ipi_mask_one, int);
BTFIXUPDEF_BLACKBOX(hard_smp_processor_id)
BTFIXUPDEF_BLACKBOX(load_current)
@@ -73,19 +80,8 @@ static inline void xc4(smpfunc_t func, unsigned long arg1, unsigned long arg2,
unsigned long arg3, unsigned long arg4)
{ smp_cross_call(func, cpu_online_map, arg1, arg2, arg3, arg4); }
-static inline int smp_call_function(void (*func)(void *info), void *info, int wait)
-{
- xc1((smpfunc_t)func, (unsigned long)info);
- return 0;
-}
-
-static inline int smp_call_function_single(int cpuid, void (*func) (void *info),
- void *info, int wait)
-{
- smp_cross_call((smpfunc_t)func, cpumask_of_cpu(cpuid),
- (unsigned long) info, 0, 0, 0);
- return 0;
-}
+extern void arch_send_call_function_single_ipi(int cpu);
+extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
static inline int cpu_logical_map(int cpu)
{
diff --git a/arch/sparc/kernel/irq_32.c b/arch/sparc/kernel/irq_32.c
index 197e1ba8548404acd3c590c9443386e651f4f680..9b89d842913c0da9166be2f07e9cc4c330d40ea9 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 4a1d5b7f20d35ce0dfcca469f15ae382d461d1e7..2710602281de1318c24ac4ca2c5be7247b259b3b 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));