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authorIngo Molnar <mingo@elte.hu>2010-04-02 20:02:55 +0200
committerIngo Molnar <mingo@elte.hu>2010-04-02 20:03:08 +0200
commitc9494727cf293ae2ec66af57547a3e79c724fec2 (patch)
tree44ae197b64fa7530ee695a90ad31326dda06f1e1 /init
parent6427462bfa50f50dc6c088c07037264fcc73eca1 (diff)
parent42be79e37e264557f12860fa4cc84b4de3685954 (diff)
Merge branch 'linus' into sched/core
Merge reason: update to latest upstream Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'init')
-rw-r--r--init/Kconfig1
-rw-r--r--init/do_mounts_initrd.c4
-rw-r--r--init/initramfs.c12
-rw-r--r--init/main.c36
4 files changed, 33 insertions, 20 deletions
diff --git a/init/Kconfig b/init/Kconfig
index 089a230e565..eb77e8ccde1 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 614241b5200..2b108538d0d 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 b37d34beb90..37d3859b1b3 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 c75dcd6eef0..cbead27caef 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