Merge branch 'linus' into sched/core

Merge reason: update to latest upstream

Signed-off-by: Ingo Molnar <mingo@elte.hu>

4 files changed, 33 insertions, 20 deletions

diff --git a/init/Kconfig b/init/Kconfig
index 089a230e5652..eb77e8ccde1c 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -463,6 +463,7 @@ config HAVE_UNSTABLE_SCHED_CLOCK
 
 menuconfig CGROUPS
 	boolean "Control Group support"
+	depends on EVENTFD
 	help
 	  This option adds support for grouping sets of processes together, for
 	  use with process control subsystems such as Cpusets, CFS, memory
diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c
index 614241b5200c..2b108538d0d9 100644
--- a/init/do_mounts_initrd.c
+++ b/init/do_mounts_initrd.c
@@ -30,11 +30,7 @@ static int __init do_linuxrc(void * shell)
 	extern char * envp_init[];
 
 	sys_close(old_fd);sys_close(root_fd);
-	sys_close(0);sys_close(1);sys_close(2);
 	sys_setsid();
-	(void) sys_open("/dev/console",O_RDWR,0);
-	(void) sys_dup(0);
-	(void) sys_dup(0);
 	return kernel_execve(shell, argv, envp_init);
 }
 
diff --git a/init/initramfs.c b/init/initramfs.c
index b37d34beb90b..37d3859b1b32 100644
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -525,7 +525,7 @@ static void __init clean_rootfs(void)
 	int fd;
 	void *buf;
 	struct linux_dirent64 *dirp;
-	int count;
+	int num;
 
 	fd = sys_open("/", O_RDONLY, 0);
 	WARN_ON(fd < 0);
@@ -539,9 +539,9 @@ static void __init clean_rootfs(void)
 	}
 
 	dirp = buf;
-	count = sys_getdents64(fd, dirp, BUF_SIZE);
-	while (count > 0) {
-		while (count > 0) {
+	num = sys_getdents64(fd, dirp, BUF_SIZE);
+	while (num > 0) {
+		while (num > 0) {
 			struct stat st;
 			int ret;
 
@@ -554,12 +554,12 @@ static void __init clean_rootfs(void)
 					sys_unlink(dirp->d_name);
 			}
 
-			count -= dirp->d_reclen;
+			num -= dirp->d_reclen;
 			dirp = (void *)dirp + dirp->d_reclen;
 		}
 		dirp = buf;
 		memset(buf, 0, BUF_SIZE);
-		count = sys_getdents64(fd, dirp, BUF_SIZE);
+		num = sys_getdents64(fd, dirp, BUF_SIZE);
 	}
 
 	sys_close(fd);
diff --git a/init/main.c b/init/main.c
index c75dcd6eef09..cbead27caefc 100644
--- a/init/main.c
+++ b/init/main.c
@@ -149,6 +149,20 @@ static int __init nosmp(char *str)
 
 early_param("nosmp", nosmp);
 
+/* this is hard limit */
+static int __init nrcpus(char *str)
+{
+	int nr_cpus;
+
+	get_option(&str, &nr_cpus);
+	if (nr_cpus > 0 && nr_cpus < nr_cpu_ids)
+		nr_cpu_ids = nr_cpus;
+
+	return 0;
+}
+
+early_param("nr_cpus", nrcpus);
+
 static int __init maxcpus(char *str)
 {
 	get_option(&str, &setup_max_cpus);
@@ -160,7 +174,7 @@ static int __init maxcpus(char *str)
 
 early_param("maxcpus", maxcpus);
 #else
-const unsigned int setup_max_cpus = NR_CPUS;
+static const unsigned int setup_max_cpus = NR_CPUS;
 #endif
 
 /*
@@ -586,6 +600,7 @@ asmlinkage void __init start_kernel(void)
 		local_irq_disable();
 	}
 	rcu_init();
+	radix_tree_init();
 	/* init some links before init_ISA_irqs() */
 	early_irq_init();
 	init_IRQ();
@@ -603,7 +618,7 @@ asmlinkage void __init start_kernel(void)
 	local_irq_enable();
 
 	/* Interrupts are enabled now so all GFP allocations are safe. */
-	set_gfp_allowed_mask(__GFP_BITS_MASK);
+	gfp_allowed_mask = __GFP_BITS_MASK;
 
 	kmem_cache_init_late();
 
@@ -659,7 +674,6 @@ asmlinkage void __init start_kernel(void)
 	proc_caches_init();
 	buffer_init();
 	key_init();
-	radix_tree_init();
 	security_init();
 	vfs_caches_init(totalram_pages);
 	signals_init();
@@ -808,11 +822,6 @@ static noinline int init_post(void)
 	system_state = SYSTEM_RUNNING;
 	numa_default_policy();
 
-	if (sys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0)
-		printk(KERN_WARNING "Warning: unable to open an initial console.\n");
-
-	(void) sys_dup(0);
-	(void) sys_dup(0);
 
 	current->signal->flags |= SIGNAL_UNKILLABLE;
 
@@ -838,7 +847,8 @@ static noinline int init_post(void)
 	run_init_process("/bin/init");
 	run_init_process("/bin/sh");
 
-	panic("No init found.  Try passing init= option to kernel.");
+	panic("No init found.  Try passing init= option to kernel. "
+	      "See Linux Documentation/init.txt for guidance.");
 }
 
 static int __init kernel_init(void * unused)
@@ -848,7 +858,7 @@ static int __init kernel_init(void * unused)
 	/*
 	 * init can allocate pages on any node
 	 */
-	set_mems_allowed(node_possible_map);
+	set_mems_allowed(node_states[N_HIGH_MEMORY]);
 	/*
 	 * init can run on any cpu.
 	 */
@@ -875,6 +885,12 @@ static int __init kernel_init(void * unused)
 
 	do_basic_setup();
 
+	/* Open the /dev/console on the rootfs, this should never fail */
+	if (sys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0)
+		printk(KERN_WARNING "Warning: unable to open an initial console.\n");
+
+	(void) sys_dup(0);
+	(void) sys_dup(0);
 	/*
 	 * check if there is an early userspace init.  If yes, let it do all
 	 * the work