6 files changed, 41 insertions, 27 deletions
diff --git a/include/linux/sched/coredump.h b/include/linux/sched/coredump.h
index 6eb65ceed213..b7fafe999073 100644
--- a/include/linux/sched/coredump.h
+++ b/include/linux/sched/coredump.h
@@ -8,6 +8,20 @@
 #define SUID_DUMP_USER		1	/* Dump as user of process */
 #define SUID_DUMP_ROOT		2	/* Dump as root */
 
+static inline unsigned long __mm_flags_get_dumpable(struct mm_struct *mm)
+{
+	/*
+	 * By convention, dumpable bits are contained in first 32 bits of the
+	 * bitmap, so we can simply access this first unsigned long directly.
+	 */
+	return __mm_flags_get_word(mm);
+}
+
+static inline void __mm_flags_set_mask_dumpable(struct mm_struct *mm, int value)
+{
+	__mm_flags_set_mask_bits_word(mm, MMF_DUMPABLE_MASK, value);
+}
+
 extern void set_dumpable(struct mm_struct *mm, int value);
 /*
  * This returns the actual value of the suid_dumpable flag. For things
@@ -22,7 +36,9 @@ static inline int __get_dumpable(unsigned long mm_flags)
 
 static inline int get_dumpable(struct mm_struct *mm)
 {
-	return __get_dumpable(mm->flags);
+	unsigned long flags = __mm_flags_get_dumpable(mm);
+
+	return __get_dumpable(flags);
 }
 
 #endif /* _LINUX_SCHED_COREDUMP_H */
diff --git a/include/linux/sched/ext.h b/include/linux/sched/ext.h
index 7047101dbf58..d82b7a9b0658 100644
--- a/include/linux/sched/ext.h
+++ b/include/linux/sched/ext.h
@@ -108,7 +108,11 @@ enum scx_kf_mask {
 	SCX_KF_UNLOCKED		= 0,	  /* sleepable and not rq locked */
 	/* ENQUEUE and DISPATCH may be nested inside CPU_RELEASE */
 	SCX_KF_CPU_RELEASE	= 1 << 0, /* ops.cpu_release() */
-	/* ops.dequeue (in REST) may be nested inside DISPATCH */
+	/*
+	 * ops.dispatch() may release rq lock temporarily and thus ENQUEUE and
+	 * SELECT_CPU may be nested inside. ops.dequeue (in REST) may also be
+	 * nested inside DISPATCH.
+	 */
 	SCX_KF_DISPATCH		= 1 << 1, /* ops.dispatch() */
 	SCX_KF_ENQUEUE		= 1 << 2, /* ops.enqueue() and ops.select_cpu() */
 	SCX_KF_SELECT_CPU	= 1 << 3, /* ops.select_cpu() */
diff --git a/include/linux/sched/mm.h b/include/linux/sched/mm.h
index 2201da0afecc..0232d983b715 100644
--- a/include/linux/sched/mm.h
+++ b/include/linux/sched/mm.h
@@ -178,7 +178,7 @@ static inline void mm_update_next_owner(struct mm_struct *mm)
 #endif
 
 extern void arch_pick_mmap_layout(struct mm_struct *mm,
-				  struct rlimit *rlim_stack);
+				  const struct rlimit *rlim_stack);
 
 unsigned long
 arch_get_unmapped_area(struct file *filp, unsigned long addr,
@@ -211,7 +211,7 @@ generic_get_unmapped_area_topdown(struct file *filp, unsigned long addr,
 				  unsigned long flags, vm_flags_t vm_flags);
 #else
 static inline void arch_pick_mmap_layout(struct mm_struct *mm,
-					 struct rlimit *rlim_stack) {}
+					 const struct rlimit *rlim_stack) {}
 #endif
 
 static inline bool in_vfork(struct task_struct *tsk)
diff --git a/include/linux/sched/signal.h b/include/linux/sched/signal.h
index 1ef1edbaaf79..7d6449982822 100644
--- a/include/linux/sched/signal.h
+++ b/include/linux/sched/signal.h
@@ -226,6 +226,10 @@ struct signal_struct {
 	struct tty_audit_buf *tty_audit_buf;
 #endif
 
+#ifdef CONFIG_CGROUPS
+	struct rw_semaphore cgroup_threadgroup_rwsem;
+#endif
+
 	/*
 	 * Thread is the potential origin of an oom condition; kill first on
 	 * oom
diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h
index ea41795a352b..525aa2a632b2 100644
--- a/include/linux/sched/task.h
+++ b/include/linux/sched/task.h
@@ -63,7 +63,7 @@ extern int lockdep_tasklist_lock_is_held(void);
 extern asmlinkage void schedule_tail(struct task_struct *prev);
 extern void init_idle(struct task_struct *idle, int cpu);
 
-extern int sched_fork(unsigned long clone_flags, struct task_struct *p);
+extern int sched_fork(u64 clone_flags, struct task_struct *p);
 extern int sched_cgroup_fork(struct task_struct *p, struct kernel_clone_args *kargs);
 extern void sched_cancel_fork(struct task_struct *p);
 extern void sched_post_fork(struct task_struct *p);
@@ -210,9 +210,8 @@ static inline struct vm_struct *task_stack_vm_area(const struct task_struct *t)
  * pins the final release of task.io_context.  Also protects ->cpuset and
  * ->cgroup.subsys[]. And ->vfork_done. And ->sysvshm.shm_clist.
  *
- * Nests both inside and outside of read_lock(&tasklist_lock).
- * It must not be nested with write_lock_irq(&tasklist_lock),
- * neither inside nor outside.
+ * Nests inside of read_lock(&tasklist_lock). It must not be nested with
+ * write_lock_irq(&tasklist_lock), neither inside nor outside.
  */
 static inline void task_lock(struct task_struct *p)
 {
diff --git a/include/linux/sched/topology.h b/include/linux/sched/topology.h
index 5263746b63e8..bbcfdf12aa6e 100644
--- a/include/linux/sched/topology.h
+++ b/include/linux/sched/topology.h
@@ -30,33 +30,24 @@ struct sd_flag_debug {
 };
 extern const struct sd_flag_debug sd_flag_debug[];
 
+struct sched_domain_topology_level;
+
 #ifdef CONFIG_SCHED_SMT
-static inline int cpu_smt_flags(void)
-{
-	return SD_SHARE_CPUCAPACITY | SD_SHARE_LLC;
-}
+extern int cpu_smt_flags(void);
+extern const struct cpumask *tl_smt_mask(struct sched_domain_topology_level *tl, int cpu);
 #endif
 
 #ifdef CONFIG_SCHED_CLUSTER
-static inline int cpu_cluster_flags(void)
-{
-	return SD_CLUSTER | SD_SHARE_LLC;
-}
+extern int cpu_cluster_flags(void);
+extern const struct cpumask *tl_cls_mask(struct sched_domain_topology_level *tl, int cpu);
 #endif
 
 #ifdef CONFIG_SCHED_MC
-static inline int cpu_core_flags(void)
-{
-	return SD_SHARE_LLC;
-}
+extern int cpu_core_flags(void);
+extern const struct cpumask *tl_mc_mask(struct sched_domain_topology_level *tl, int cpu);
 #endif
 
-#ifdef CONFIG_NUMA
-static inline int cpu_numa_flags(void)
-{
-	return SD_NUMA;
-}
-#endif
+extern const struct cpumask *tl_pkg_mask(struct sched_domain_topology_level *tl, int cpu);
 
 extern int arch_asym_cpu_priority(int cpu);
 
@@ -172,7 +163,7 @@ bool cpus_equal_capacity(int this_cpu, int that_cpu);
 bool cpus_share_cache(int this_cpu, int that_cpu);
 bool cpus_share_resources(int this_cpu, int that_cpu);
 
-typedef const struct cpumask *(*sched_domain_mask_f)(int cpu);
+typedef const struct cpumask *(*sched_domain_mask_f)(struct sched_domain_topology_level *tl, int cpu);
 typedef int (*sched_domain_flags_f)(void);
 
 struct sd_data {