diff options
| -rw-r--r-- | include/asm-generic/vmlinux.lds.h | 2 | ||||
| -rw-r--r-- | include/linux/init.h | 7 | ||||
| -rw-r--r-- | init/main.c | 13 |
3 files changed, 20 insertions, 2 deletions
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index 729f6b0..9cd44b1 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -359,6 +359,8 @@ } #define INITCALLS \ + *(.initcallearly.init) \ + __early_initcall_end = .; \ *(.initcall0.init) \ *(.initcall0s.init) \ *(.initcall1.init) \ diff --git a/include/linux/init.h b/include/linux/init.h index 42ae954..11b84e1 100644 --- a/include/linux/init.h +++ b/include/linux/init.h @@ -170,6 +170,13 @@ extern void (*late_time_init)(void); __attribute__((__section__(".initcall" level ".init"))) = fn /* + * Early initcalls run before initializing SMP. + * + * Only for built-in code, not modules. + */ +#define early_initcall(fn) __define_initcall("early",fn,early) + +/* * A "pure" initcall has no dependencies on anything else, and purely * initializes variables that couldn't be statically initialized. * diff --git a/init/main.c b/init/main.c index 0604cbc..b6fec08 100644 --- a/init/main.c +++ b/init/main.c @@ -743,13 +743,13 @@ static void __init do_one_initcall(initcall_t fn) } -extern initcall_t __initcall_start[], __initcall_end[]; +extern initcall_t __initcall_start[], __initcall_end[], __early_initcall_end[]; static void __init do_initcalls(void) { initcall_t *call; - for (call = __initcall_start; call < __initcall_end; call++) + for (call = __early_initcall_end; call < __initcall_end; call++) do_one_initcall(*call); /* Make sure there is no pending stuff from the initcall sequence */ @@ -783,6 +783,14 @@ static int __init nosoftlockup_setup(char *str) } __setup("nosoftlockup", nosoftlockup_setup); +static void __init __do_pre_smp_initcalls(void) +{ + initcall_t *call; + + for (call = __initcall_start; call < __early_initcall_end; call++) + do_one_initcall(*call); +} + static void __init do_pre_smp_initcalls(void) { extern int spawn_ksoftirqd(void); @@ -865,6 +873,7 @@ static int __init kernel_init(void * unused) smp_prepare_cpus(setup_max_cpus); + __do_pre_smp_initcalls(); do_pre_smp_initcalls(); smp_init(); |