[S390] Convert to smp_call_function_single.

smp_call_function_single now has the same semantics as s390's
smp_call_function_on. Therefore convert to the *single variant
and get rid of some architecture specific code.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c
index 6ffbab7..62391fb 100644 (file)
--- a/arch/s390/appldata/appldata_base.c
+++ b/arch/s390/appldata/appldata_base.c
@@ -173,7 +173,7 @@ int appldata_diag(char record_nr, u16 function, unsigned long buffer,
 /*
  * appldata_mod_vtimer_wrap()
  *
- * wrapper function for mod_virt_timer(), because smp_call_function_on()
+ * wrapper function for mod_virt_timer(), because smp_call_function_single()
  * accepts only one parameter.
  */
 static void __appldata_mod_vtimer_wrap(void *p) {
@@ -208,9 +208,9 @@ __appldata_vtimer_setup(int cmd)
                                          num_online_cpus()) * TOD_MICRO;
                for_each_online_cpu(i) {
                        per_cpu(appldata_timer, i).expires = per_cpu_interval;
-                       smp_call_function_on(add_virt_timer_periodic,
-                                            &per_cpu(appldata_timer, i),
-                                            0, 1, i);
+                       smp_call_function_single(i, add_virt_timer_periodic,
+                                                &per_cpu(appldata_timer, i),
+                                                0, 1);
                }
                appldata_timer_active = 1;
                P_INFO("Monitoring timer started.\n");
@@ -236,8 +236,8 @@ __appldata_vtimer_setup(int cmd)
                        } args;
                        args.timer = &per_cpu(appldata_timer, i);
                        args.expires = per_cpu_interval;
-                       smp_call_function_on(__appldata_mod_vtimer_wrap,
-                                            &args, 0, 1, i);
+                       smp_call_function_single(i, __appldata_mod_vtimer_wrap,
+                                                &args, 0, 1);
                }
        }
 }

diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 182c085..aff9f85 100644 (file)
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -170,30 +170,28 @@ int smp_call_function(void (*func) (void *info), void *info, int nonatomic,
 EXPORT_SYMBOL(smp_call_function);
 
 /*
- * smp_call_function_on:
+ * smp_call_function_single:
+ * @cpu: the CPU where func should run
  * @func: the function to run; this must be fast and non-blocking
  * @info: an arbitrary pointer to pass to the function
  * @nonatomic: unused
  * @wait: if true, wait (atomically) until function has completed on other CPUs
- * @cpu: the CPU where func should run
  *
  * Run a function on one processor.
  *
  * You must not call this function with disabled interrupts, from a
  * hardware interrupt handler or from a bottom half.
  */
-int smp_call_function_on(void (*func) (void *info), void *info, int nonatomic,
-                        int wait, int cpu)
+int smp_call_function_single(int cpu, void (*func) (void *info), void *info,
+                            int nonatomic, int wait)
 {
-       cpumask_t map = CPU_MASK_NONE;
-
        preempt_disable();
-       cpu_set(cpu, map);
-       __smp_call_function_map(func, info, nonatomic, wait, map);
+       __smp_call_function_map(func, info, nonatomic, wait,
+                               cpumask_of_cpu(cpu));
        preempt_enable();
        return 0;
 }
-EXPORT_SYMBOL(smp_call_function_on);
+EXPORT_SYMBOL(smp_call_function_single);
 
 static void do_send_stop(void)
 {

diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c
index b6ed143..84ff78d 100644 (file)
--- a/arch/s390/kernel/vtime.c
+++ b/arch/s390/kernel/vtime.c
@@ -415,7 +415,7 @@ EXPORT_SYMBOL(add_virt_timer_periodic);
 
 /*
  * If we change a pending timer the function must be called on the CPU
- * where the timer is running on, e.g. by smp_call_function_on()
+ * where the timer is running on, e.g. by smp_call_function_single()
  *
  * The original mod_timer adds the timer if it is not pending. For compatibility
  * we do the same. The timer will be added on the current CPU as a oneshot timer.

diff --git a/include/asm-s390/smp.h b/include/asm-s390/smp.h
index 76e424f..07708c0 100644 (file)
--- a/include/asm-s390/smp.h
+++ b/include/asm-s390/smp.h
@@ -36,8 +36,7 @@ extern void machine_halt_smp(void);
 extern void machine_power_off_smp(void);
 
 extern void smp_setup_cpu_possible_map(void);
-extern int smp_call_function_on(void (*func) (void *info), void *info,
-                               int nonatomic, int wait, int cpu);
+
 #define NO_PROC_ID             0xFF            /* No processor magic marker */
 
 /*
@@ -96,14 +95,6 @@ extern int __cpu_up (unsigned int cpu);
 #endif
 
 #ifndef CONFIG_SMP
-static inline int
-smp_call_function_on(void (*func) (void *info), void *info,
-                    int nonatomic, int wait, int cpu)
-{
-       func(info);
-       return 0;
-}
-
 static inline void smp_send_stop(void)
 {
        /* Disable all interrupts/machine checks */

diff --git a/net/iucv/iucv.c b/net/iucv/iucv.c
index ad5150b..983058d 100644 (file)
--- a/net/iucv/iucv.c
+++ b/net/iucv/iucv.c
@@ -479,7 +479,8 @@ static void iucv_setmask_mp(void)
                /* Enable all cpus with a declared buffer. */
                if (cpu_isset(cpu, iucv_buffer_cpumask) &&
                    !cpu_isset(cpu, iucv_irq_cpumask))
-                       smp_call_function_on(iucv_allow_cpu, NULL, 0, 1, cpu);
+                       smp_call_function_single(cpu, iucv_allow_cpu,
+                                                NULL, 0, 1);
        preempt_enable();
 }
 
@@ -497,7 +498,7 @@ static void iucv_setmask_up(void)
        cpumask = iucv_irq_cpumask;
        cpu_clear(first_cpu(iucv_irq_cpumask), cpumask);
        for_each_cpu_mask(cpu, cpumask)
-               smp_call_function_on(iucv_block_cpu, NULL, 0, 1, cpu);
+               smp_call_function_single(cpu, iucv_block_cpu, NULL, 0, 1);
 }
 
 /**
@@ -522,7 +523,7 @@ static int iucv_enable(void)
        rc = -EIO;
        preempt_disable();
        for_each_online_cpu(cpu)
-               smp_call_function_on(iucv_declare_cpu, NULL, 0, 1, cpu);
+               smp_call_function_single(cpu, iucv_declare_cpu, NULL, 0, 1);
        preempt_enable();
        if (cpus_empty(iucv_buffer_cpumask))
                /* No cpu could declare an iucv buffer. */
@@ -578,7 +579,7 @@ static int __cpuinit iucv_cpu_notify(struct notifier_block *self,
        case CPU_ONLINE_FROZEN:
        case CPU_DOWN_FAILED:
        case CPU_DOWN_FAILED_FROZEN:
-               smp_call_function_on(iucv_declare_cpu, NULL, 0, 1, cpu);
+               smp_call_function_single(cpu, iucv_declare_cpu, NULL, 0, 1);
                break;
        case CPU_DOWN_PREPARE:
        case CPU_DOWN_PREPARE_FROZEN:
@@ -587,10 +588,10 @@ static int __cpuinit iucv_cpu_notify(struct notifier_block *self,
                if (cpus_empty(cpumask))
                        /* Can't offline last IUCV enabled cpu. */
                        return NOTIFY_BAD;
-               smp_call_function_on(iucv_retrieve_cpu, NULL, 0, 1, cpu);
+               smp_call_function_single(cpu, iucv_retrieve_cpu, NULL, 0, 1);
                if (cpus_empty(iucv_irq_cpumask))
-                       smp_call_function_on(iucv_allow_cpu, NULL, 0, 1,
-                                            first_cpu(iucv_buffer_cpumask));
+                       smp_call_function_single(first_cpu(iucv_buffer_cpumask),
+                                                iucv_allow_cpu, NULL, 0, 1);
                break;
        }
        return NOTIFY_OK;