LSM: BUILD_BUG_ON if the common_audit_data union ever grows

[firefly-linux-kernel-4.4.55.git] / kernel / cpuset.c

diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 1010cc61931ff00f4f7f8890b07f0af66ef2ed1e..14f7070b4ba280ee353b84ccda1faa841ecd1ead 100644 (file)
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -270,11 +270,11 @@ static struct file_system_type cpuset_fs_type = {
  * are online.  If none are online, walk up the cpuset hierarchy
  * until we find one that does have some online cpus.  If we get
  * all the way to the top and still haven't found any online cpus,
- * return cpu_online_map.  Or if passed a NULL cs from an exit'ing
- * task, return cpu_online_map.
+ * return cpu_online_mask.  Or if passed a NULL cs from an exit'ing
+ * task, return cpu_online_mask.
  *
  * One way or another, we guarantee to return some non-empty subset
- * of cpu_online_map.
+ * of cpu_online_mask.
  *
  * Call with callback_mutex held.
  */
@@ -867,7 +867,7 @@ static int update_cpumask(struct cpuset *cs, struct cpuset *trialcs,
        int retval;
        int is_load_balanced;
 
-       /* top_cpuset.cpus_allowed tracks cpu_online_map; it's read-only */
+       /* top_cpuset.cpus_allowed tracks cpu_online_mask; it's read-only */
        if (cs == &top_cpuset)
                return -EACCES;
 
@@ -2149,7 +2149,7 @@ void __init cpuset_init_smp(void)
  *
  * Description: Returns the cpumask_var_t cpus_allowed of the cpuset
  * attached to the specified @tsk.  Guaranteed to return some non-empty
- * subset of cpu_online_map, even if this means going outside the
+ * subset of cpu_online_mask, even if this means going outside the
  * tasks cpuset.
  **/
 
@@ -2162,10 +2162,9 @@ void cpuset_cpus_allowed(struct task_struct *tsk, struct cpumask *pmask)
        mutex_unlock(&callback_mutex);
 }
 
-int cpuset_cpus_allowed_fallback(struct task_struct *tsk)
+void cpuset_cpus_allowed_fallback(struct task_struct *tsk)
 {
        const struct cpuset *cs;
-       int cpu;
 
        rcu_read_lock();
        cs = task_cs(tsk);
@@ -2186,22 +2185,10 @@ int cpuset_cpus_allowed_fallback(struct task_struct *tsk)
         * changes in tsk_cs()->cpus_allowed. Otherwise we can temporary
         * set any mask even if it is not right from task_cs() pov,
         * the pending set_cpus_allowed_ptr() will fix things.
+        *
+        * select_fallback_rq() will fix things ups and set cpu_possible_mask
+        * if required.
         */
-
-       cpu = cpumask_any_and(&tsk->cpus_allowed, cpu_active_mask);
-       if (cpu >= nr_cpu_ids) {
-               /*
-                * Either tsk->cpus_allowed is wrong (see above) or it
-                * is actually empty. The latter case is only possible
-                * if we are racing with remove_tasks_in_empty_cpuset().
-                * Like above we can temporary set any mask and rely on
-                * set_cpus_allowed_ptr() as synchronization point.
-                */
-               do_set_cpus_allowed(tsk, cpu_possible_mask);
-               cpu = cpumask_any(cpu_active_mask);
-       }
-
-       return cpu;
 }
 
 void cpuset_init_current_mems_allowed(void)