sched: Remove remaining USER_SCHED code

This is left over from commit 7c9414385e ("sched: Remove USER_SCHED"")

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Dhaval Giani <dhaval.giani@gmail.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: David Howells <dhowells@redhat.com>
LKML-Reference: <4BA9A05F.7010407@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/init/Kconfig b/init/Kconfig
index eb77e8c..5fe94b8 100644 (file)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -604,8 +604,7 @@ config RT_GROUP_SCHED
        default n
        help
          This feature lets you explicitly allocate real CPU bandwidth
-         to users or control groups (depending on the "Basis for grouping tasks"
-         setting below. If enabled, it will also make it impossible to
+         to task groups. If enabled, it will also make it impossible to
          schedule realtime tasks for non-root users until you allocate
          realtime bandwidth for them.
          See Documentation/scheduler/sched-rt-group.txt for more information.

diff --git a/kernel/capability.c b/kernel/capability.c
index 9e4697e..2f05303 100644 (file)
--- a/kernel/capability.c
+++ b/kernel/capability.c
@@ -15,7 +15,6 @@
 #include <linux/syscalls.h>
 #include <linux/pid_namespace.h>
 #include <asm/uaccess.h>
-#include "cred-internals.h"
 
 /*
  * Leveraged for setting/resetting capabilities

diff --git a/kernel/cred-internals.h b/kernel/cred-internals.h
deleted file mode 100644 (file)
index 2dc4fc2..0000000
--- a/kernel/cred-internals.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/* Internal credentials stuff
- *
- * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
- */
-
-/*
- * user.c
- */
-static inline void sched_switch_user(struct task_struct *p)
-{
-#ifdef CONFIG_USER_SCHED
-       sched_move_task(p);
-#endif /* CONFIG_USER_SCHED */
-}
-

diff --git a/kernel/cred.c b/kernel/cred.c
index 1b1129d..19d3ccc 100644 (file)
--- a/kernel/cred.c
+++ b/kernel/cred.c
@@ -16,7 +16,6 @@
 #include <linux/init_task.h>
 #include <linux/security.h>
 #include <linux/cn_proc.h>
-#include "cred-internals.h"
 
 #if 0
 #define kdebug(FMT, ...) \
@@ -557,8 +556,6 @@ int commit_creds(struct cred *new)
                atomic_dec(&old->user->processes);
        alter_cred_subscribers(old, -2);
 
-       sched_switch_user(task);
-
        /* send notifications */
        if (new->uid   != old->uid  ||
            new->euid  != old->euid ||

diff --git a/kernel/exit.c b/kernel/exit.c
index cce59cb..84dc4b2 100644 (file)
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -55,7 +55,6 @@
 #include <asm/unistd.h>
 #include <asm/pgtable.h>
 #include <asm/mmu_context.h>
-#include "cred-internals.h"
 
 static void exit_mm(struct task_struct * tsk);
 

diff --git a/kernel/sched_debug.c b/kernel/sched_debug.c
index 8a46a71..0932c5c 100644 (file)
--- a/kernel/sched_debug.c
+++ b/kernel/sched_debug.c
@@ -173,11 +173,6 @@ void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
        task_group_path(tg, path, sizeof(path));
 
        SEQ_printf(m, "\ncfs_rq[%d]:%s\n", cpu, path);
-#elif defined(CONFIG_USER_SCHED) && defined(CONFIG_FAIR_GROUP_SCHED)
-       {
-               uid_t uid = cfs_rq->tg->uid;
-               SEQ_printf(m, "\ncfs_rq[%d] for UID: %u\n", cpu, uid);
-       }
 #else
        SEQ_printf(m, "\ncfs_rq[%d]:\n", cpu);
 #endif

diff --git a/kernel/user.c b/kernel/user.c
index ec3b222..8e1c8c0 100644 (file)
--- a/kernel/user.c
+++ b/kernel/user.c
@@ -16,7 +16,6 @@
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/user_namespace.h>
-#include "cred-internals.h"
 
 struct user_namespace init_user_ns = {
        .kref = {
@@ -137,9 +136,7 @@ struct user_struct *alloc_uid(struct user_namespace *ns, uid_t uid)
        struct hlist_head *hashent = uidhashentry(ns, uid);
        struct user_struct *up, *new;
 
-       /* Make uid_hash_find() + uids_user_create() + uid_hash_insert()
-        * atomic.
-        */
+       /* Make uid_hash_find() + uid_hash_insert() atomic. */
        spin_lock_irq(&uidhash_lock);
        up = uid_hash_find(uid, hashent);
        spin_unlock_irq(&uidhash_lock);
@@ -161,11 +158,6 @@ struct user_struct *alloc_uid(struct user_namespace *ns, uid_t uid)
                spin_lock_irq(&uidhash_lock);
                up = uid_hash_find(uid, hashent);
                if (up) {
-                       /* This case is not possible when CONFIG_USER_SCHED
-                        * is defined, since we serialize alloc_uid() using
-                        * uids_mutex. Hence no need to call
-                        * sched_destroy_user() or remove_user_sysfs_dir().
-                        */
                        key_put(new->uid_keyring);
                        key_put(new->session_keyring);
                        kmem_cache_free(uid_cachep, new);