uti: util_indicate_clone: check --enable-uti mcexec option

Change-Id: Ic7474d01c18acd1edbc07844d7a7b010b2175f71

executer/include/uprotocol.h

@@ -164,6 +164,7 @@ struct program_load_desc {
 				    (sizeof(unsigned long) * 8)];
 
 	int thp_disable;
+	int enable_uti;
 	int uti_thread_rank; /* N-th clone() spawns a thread on Linux CPU */
 	int uti_use_last_cpu; /* Work-around not to share CPU with OpenMP thread */
 	int straight_map;

executer/user/mcexec.c

@@ -2816,6 +2816,7 @@ int main(int argc, char **argv)
 			  desc->mpol_mode, desc->mpol_nodemask[0]);
 	}
 
+	desc->enable_uti = enable_uti;
 	desc->uti_thread_rank = uti_thread_rank;
 	desc->uti_use_last_cpu = uti_use_last_cpu;
 	desc->thp_disable = get_thp_disable();

kernel/host.c

@@ -563,6 +563,7 @@ static int process_msg_prepare_process(unsigned long rphys)
 			 __func__, vm->numa_mem_policy, vm->numa_mask[0]);
 	}
 
+	proc->enable_uti = pn->enable_uti;
 	proc->uti_thread_rank = pn->uti_thread_rank;
 	proc->uti_use_last_cpu = pn->uti_use_last_cpu;
 

kernel/include/process.h

@@ -565,6 +565,7 @@ struct process {
 	unsigned long mpol_bind_mask;
 	int mpol_mode;
 
+	int enable_uti;
 	int uti_thread_rank; /* Spawn on Linux CPU when clone_count reaches this */
 	int uti_use_last_cpu; /* Work-around not to share CPU with OpenMP thread */
 	int clone_count;

kernel/include/syscall.h

@@ -235,6 +235,7 @@ struct program_load_desc {
 				    (sizeof(unsigned long) * 8)];
 
 	int thp_disable;
+	int enable_uti;
 	int uti_thread_rank; /* N-th clone() spawns a thread on Linux CPU */
 	int uti_use_last_cpu; /* Work-around not to share CPU with OpenMP thread */
 	int straight_map;

kernel/process.c

@@ -122,6 +122,7 @@ init_process(struct process *proc, struct process *parent)
 		       sizeof(struct rlimit) * MCK_RLIM_MAX);
 		memcpy(&proc->cpu_set, &parent->cpu_set,
 		       sizeof(proc->cpu_set));
+		proc->enable_uti = parent->enable_uti;
 	}
 
 	INIT_LIST_HEAD(&proc->hash_list);

kernel/syscall.c

@@ -10722,6 +10722,12 @@ SYSCALL_DECLARE(util_indicate_clone)
 	struct thread *thread = cpu_local_var(current);
 	struct uti_attr *kattr = NULL;
 
+	if (!thread->proc->enable_uti) {
+		kprintf("%s: error: --enable-uti mcexec option not specified\n",
+			__func__);
+		return -EINVAL;
+	}
+
 	if (mod != SPAWN_TO_LOCAL &&
 	    mod != SPAWN_TO_REMOTE)
 		return -EINVAL;