kernel/smp.c: remove 'priv' of call_single_data

The 'priv' field is redundant; we can pass data via 'info'.
Signed-off-by: Nliguang <lig.fnst@cn.fujitsu.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

include/linux/smp.h

@@ -20,7 +20,6 @@ struct call_single_data {
 	smp_call_func_t func;
 	void *info;
 	u16 flags;
-	u16 priv;
 };
 
 /* total number of cpus in this system (may exceed NR_CPUS) */

kernel/softirq.c

@@ -620,8 +620,7 @@ static void remote_softirq_receive(void *data)
 	unsigned long flags;
 	int softirq;
 
-	softirq = cp->priv;
-
+	softirq = *(int *)cp->info;
 	local_irq_save(flags);
 	__local_trigger(cp, softirq);
 	local_irq_restore(flags);
@@ -631,9 +630,8 @@ static int __try_remote_softirq(struct call_single_data *cp, int cpu, int softir
 {
 	if (cpu_online(cpu)) {
 		cp->func = remote_softirq_receive;
-		cp->info = cp;
+		cp->info = &softirq;
 		cp->flags = 0;
-		cp->priv = softirq;
 
 		__smp_call_function_single(cpu, cp, 0);
 		return 0;