diff options
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 12 | ||||
| -rw-r--r-- | init/do_mounts_initrd.c | 4 | ||||
| -rw-r--r-- | init/main.c | 8 |
3 files changed, 19 insertions, 5 deletions
diff --git a/init/Kconfig b/init/Kconfig index a98e1acc122d..dcb68ac42b78 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -449,7 +449,7 @@ config TREE_RCU config TREE_PREEMPT_RCU bool "Preemptible tree-based hierarchical RCU" - depends on PREEMPT && SMP + depends on PREEMPT help This option selects the RCU implementation that is designed for very large SMP systems with hundreds or @@ -457,6 +457,8 @@ config TREE_PREEMPT_RCU is also required. It also scales down nicely to smaller systems. + Select this option if you are unsure. + config TINY_RCU bool "UP-only small-memory-footprint RCU" depends on !PREEMPT && !SMP @@ -482,6 +484,14 @@ config PREEMPT_RCU This option enables preemptible-RCU code that is common between the TREE_PREEMPT_RCU and TINY_PREEMPT_RCU implementations. +config RCU_STALL_COMMON + def_bool ( TREE_RCU || TREE_PREEMPT_RCU || RCU_TRACE ) + help + This option enables RCU CPU stall code that is common between + the TINY and TREE variants of RCU. The purpose is to allow + the tiny variants to disable RCU CPU stall warnings, while + making these warnings mandatory for the tree variants. + config CONTEXT_TRACKING bool diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c index 5e4ded51788e..f9acf71b9810 100644 --- a/init/do_mounts_initrd.c +++ b/init/do_mounts_initrd.c @@ -36,6 +36,10 @@ __setup("noinitrd", no_initrd); static int init_linuxrc(struct subprocess_info *info, struct cred *new) { sys_unshare(CLONE_FS | CLONE_FILES); + /* stdin/stdout/stderr for /linuxrc */ + sys_open("/dev/console", O_RDWR, 0); + sys_dup(0); + sys_dup(0); /* move initrd over / and chdir/chroot in initrd root */ sys_chdir("/root"); sys_mount(".", "/", NULL, MS_MOVE, NULL); diff --git a/init/main.c b/init/main.c index 85d69dffe864..cee4b5c66d81 100644 --- a/init/main.c +++ b/init/main.c @@ -604,7 +604,7 @@ asmlinkage void __init start_kernel(void) pidmap_init(); anon_vma_init(); #ifdef CONFIG_X86 - if (efi_enabled) + if (efi_enabled(EFI_RUNTIME_SERVICES)) efi_enter_virtual_mode(); #endif thread_info_cache_init(); @@ -632,7 +632,7 @@ asmlinkage void __init start_kernel(void) acpi_early_init(); /* before LAPIC and SMP init */ sfi_init_late(); - if (efi_enabled) { + if (efi_enabled(EFI_RUNTIME_SERVICES)) { efi_late_init(); efi_free_boot_services(); } @@ -802,7 +802,7 @@ static int run_init_process(const char *init_filename) (const char __user *const __user *)envp_init); } -static void __init kernel_init_freeable(void); +static noinline void __init kernel_init_freeable(void); static int __ref kernel_init(void *unused) { @@ -845,7 +845,7 @@ static int __ref kernel_init(void *unused) "See Linux Documentation/init.txt for guidance."); } -static void __init kernel_init_freeable(void) +static noinline void __init kernel_init_freeable(void) { /* * Wait until kthreadd is all set-up. |