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