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-rw-r--r--init/Kconfig15
-rw-r--r--init/main.c3
2 files changed, 16 insertions, 2 deletions
diff --git a/init/Kconfig b/init/Kconfig
index f5dbc6d4261b..a905b7301e10 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -791,6 +791,19 @@ config RCU_NOCB_CPU_ALL
endchoice
+config RCU_EXPEDITE_BOOT
+ bool
+ default n
+ help
+ This option enables expedited grace periods at boot time,
+ as if rcu_expedite_gp() had been invoked early in boot.
+ The corresponding rcu_unexpedite_gp() is invoked from
+ rcu_end_inkernel_boot(), which is intended to be invoked
+ at the end of the kernel-only boot sequence, just before
+ init is exec'ed.
+
+ Accept the default if unsure.
+
endmenu # "RCU Subsystem"
config BUILD_BIN2C
@@ -1513,7 +1526,7 @@ config EVENTFD
# syscall, maps, verifier
config BPF_SYSCALL
- bool "Enable bpf() system call" if EXPERT
+ bool "Enable bpf() system call"
select ANON_INODES
select BPF
default n
diff --git a/init/main.c b/init/main.c
index f6dd8fe1f22c..a7e969d12f51 100644
--- a/init/main.c
+++ b/init/main.c
@@ -144,7 +144,7 @@ EXPORT_SYMBOL_GPL(static_key_initialized);
* rely on the BIOS and skip the reset operation.
*
* This is useful if kernel is booting in an unreliable environment.
- * For ex. kdump situaiton where previous kernel has crashed, BIOS has been
+ * For ex. kdump situation where previous kernel has crashed, BIOS has been
* skipped and devices will be in unknown state.
*/
unsigned int reset_devices;
@@ -385,6 +385,7 @@ static noinline void __init_refok rest_init(void)
int pid;
rcu_scheduler_starting();
+ smpboot_thread_init();
/*
* We need to spawn init first so that it obtains pid 1, however
* the init task will end up wanting to create kthreads, which, if