cpumask: Use cpu_*_mask accessors code: alpha

Impact: use new API, fix SMP bug.

Use the new accessors rather than frobbing bits directly.

This also removes the bug introduced in ee0c468b (alpha: compile
fixes) which had Alpha setting bits on an on-stack cpumask, not the
cpu_online_map.

Cc: Richard Henderson <[e-mail]>
Cc: FUJITA Tomonori <[e-mail]>
Signed-off-by: Rusty Russell <[e-mail]>
Signed-off-by: Mike Travis <[e-mail]>
Acked-by: Ivan Kokshaysky <[e-mail]>
Acked-by: Ingo Molnar <[e-mail]>

arch/alpha/kernel/process.c

···
 	if (cpuid != boot_cpuid) {
 		flags |= 0x00040000UL; /* "remain halted" */
 		*pflags = flags;
-		cpu_clear(cpuid, cpu_present_map);
-		cpu_clear(cpuid, cpu_possible_map);
+		set_cpu_present(cpuid, false);
+		set_cpu_possible(cpuid, false);
 		halt();
 	}
 #endif
···
 
 #ifdef CONFIG_SMP
 	/* Wait for the secondaries to halt. */
-	cpu_clear(boot_cpuid, cpu_present_map);
-	cpu_clear(boot_cpuid, cpu_possible_map);
+	set_cpu_present(boot_cpuid, false);
+	set_cpu_possible(boot_cpuid, false);
 	while (cpus_weight(cpu_present_map))
 		barrier();
 #endif

arch/alpha/kernel/smp.c

···
 smp_callin(void)
 {
 	int cpuid = hard_smp_processor_id();
-	cpumask_t mask = cpu_online_map;
 
-	if (cpu_test_and_set(cpuid, mask)) {
+	if (cpu_online(cpuid)) {
 		printk("??, cpu 0x%x already present??\n", cpuid);
 		BUG();
 	}
+	set_cpu_online(cpuid, true);
 
 	/* Turn on machine checks.  */
 	wrmces(7);
···
 				((char *)cpubase + i*hwrpb->processor_size);
 			if ((cpu->flags & 0x1cc) == 0x1cc) {
 				smp_num_probed++;
-				cpu_set(i, cpu_possible_map);
-				cpu_set(i, cpu_present_map);
+				set_cpu_possible(i, true);
+				set_cpu_present(i, true);
 				cpu->pal_revision = boot_cpu_palrev;
 			}
 
···
 
 	/* Nothing to do on a UP box, or when told not to.  */
 	if (smp_num_probed == 1 || max_cpus == 0) {
-		cpu_possible_map = cpumask_of_cpu(boot_cpuid);
-		cpu_present_map = cpumask_of_cpu(boot_cpuid);
+		init_cpu_possible(cpumask_of(boot_cpuid));
+		init_cpu_present(cpumask_of(boot_cpuid));
 		printk(KERN_INFO "SMP mode deactivated.\n");
 		return;
 	}