diff options
Diffstat (limited to 'init/main.c')
| -rw-r--r-- | init/main.c | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/init/main.c b/init/main.c index 1a5da2c2660c..76df62fc3e2c 100644 --- a/init/main.c +++ b/init/main.c @@ -63,6 +63,7 @@ #include <linux/debugobjects.h> #include <linux/lockdep.h> #include <linux/kmemleak.h> +#include <linux/padata.h> #include <linux/pid_namespace.h> #include <linux/device/driver.h> #include <linux/kthread.h> @@ -400,9 +401,8 @@ static void __init setup_boot_config(const char *cmdline) char *data, *copy; int ret; + /* Cut out the bootconfig data even if we have no bootconfig option */ data = get_boot_config_from_initrd(&size, &csum); - if (!data) - goto not_found; strlcpy(tmp_cmdline, boot_command_line, COMMAND_LINE_SIZE); parse_args("bootconfig", tmp_cmdline, NULL, 0, 0, 0, NULL, @@ -411,6 +411,11 @@ static void __init setup_boot_config(const char *cmdline) if (!bootconfig_found) return; + if (!data) { + pr_err("'bootconfig' found on command line, but no bootconfig found\n"); + return; + } + if (size >= XBC_DATA_MAX) { pr_err("bootconfig size %d greater than max size %d\n", size, XBC_DATA_MAX); @@ -446,8 +451,6 @@ static void __init setup_boot_config(const char *cmdline) extra_init_args = xbc_make_cmdline("init"); } return; -not_found: - pr_err("'bootconfig' found on command line, but no bootconfig found\n"); } #else @@ -1036,6 +1039,8 @@ asmlinkage __visible void __init start_kernel(void) /* Do the rest non-__init'ed, we're now alive */ arch_call_rest_init(); + + prevent_tail_call_optimization(); } /* Call all constructor functions linked into the kernel. */ @@ -1428,6 +1433,16 @@ static int __ref kernel_init(void *unused) panic("Requested init %s failed (error %d).", execute_command, ret); } + + if (CONFIG_DEFAULT_INIT[0] != '\0') { + ret = run_init_process(CONFIG_DEFAULT_INIT); + if (ret) + pr_err("Default init %s failed (error %d)\n", + CONFIG_DEFAULT_INIT, ret); + else + return 0; + } + if (!try_to_run_init_process("/sbin/init") || !try_to_run_init_process("/etc/init") || !try_to_run_init_process("/bin/init") || @@ -1478,6 +1493,7 @@ static noinline void __init kernel_init_freeable(void) smp_init(); sched_init_smp(); + padata_init(); page_alloc_init_late(); /* Initialize page ext after all struct pages are initialized. */ page_ext_init(); |