diff options
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 34 | ||||
| -rw-r--r-- | init/do_mounts.c | 4 | ||||
| -rw-r--r-- | init/init_task.c | 1 | ||||
| -rw-r--r-- | init/initramfs.c | 2 | ||||
| -rw-r--r-- | init/main.c | 18 | ||||
| -rw-r--r-- | init/noinitramfs.c | 2 |
6 files changed, 45 insertions, 16 deletions
diff --git a/init/Kconfig b/init/Kconfig index bb0d6e6262b1..11f8a845f259 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -137,6 +137,20 @@ config COMPILE_TEST here. If you are a user/distributor, say N here to exclude useless drivers to be distributed. +config WERROR + bool "Compile the kernel with warnings as errors" + default COMPILE_TEST + help + A kernel build should not cause any compiler warnings, and this + enables the '-Werror' flag to enforce that rule by default. + + However, if you have a new (or very old) compiler with odd and + unusual warnings, or you have some architecture with problems, + you may need to disable this config option in order to + successfully build the kernel. + + If in doubt, say Y. + config UAPI_HEADER_TEST bool "Compile test UAPI headers" depends on HEADERS_INSTALL && CC_CAN_LINK @@ -775,6 +789,20 @@ config PRINTK_SAFE_LOG_BUF_SHIFT 13 => 8 KB for each CPU 12 => 4 KB for each CPU +config PRINTK_INDEX + bool "Printk indexing debugfs interface" + depends on PRINTK && DEBUG_FS + help + Add support for indexing of all printk formats known at compile time + at <debugfs>/printk/index/<module>. + + This can be used as part of maintaining daemons which monitor + /dev/kmsg, as it permits auditing the printk formats present in a + kernel, allowing detection of cases where monitored printks are + changed or no longer present. + + There is no additional runtime cost to printk with this enabled. + # # Architectures with an unreliable sched_clock() should select this: # @@ -1509,11 +1537,6 @@ config PRINTK very difficult to diagnose system problems, saying N here is strongly discouraged. -config PRINTK_NMI - def_bool y - depends on PRINTK - depends on HAVE_NMI - config BUG bool "BUG() support" if EXPERT default y @@ -1847,7 +1870,6 @@ config SLUB_DEBUG default y bool "Enable SLUB debugging support" if EXPERT depends on SLUB && SYSFS - select STACKDEPOT if STACKTRACE_SUPPORT help SLUB has extensive debug support features. Disabling these can result in significant savings in code size. This also disables diff --git a/init/do_mounts.c b/init/do_mounts.c index 9b4a1f877e47..2ed30ff6c906 100644 --- a/init/do_mounts.c +++ b/init/do_mounts.c @@ -427,10 +427,6 @@ retry: printk("Please append a correct \"root=\" boot option; here are the available partitions:\n"); printk_all_partitions(); -#ifdef CONFIG_DEBUG_BLOCK_EXT_DEVT - printk("DEBUG_BLOCK_EXT_DEVT is enabled, you need to specify " - "explicit textual name for \"root=\" boot option.\n"); -#endif panic("VFS: Unable to mount root fs on %s", b); } if (!(flags & SB_RDONLY)) { diff --git a/init/init_task.c b/init/init_task.c index 562f2ef8d157..2d024066e27b 100644 --- a/init/init_task.c +++ b/init/init_task.c @@ -80,6 +80,7 @@ struct task_struct init_task .normal_prio = MAX_PRIO - 20, .policy = SCHED_NORMAL, .cpus_ptr = &init_task.cpus_mask, + .user_cpus_ptr = NULL, .cpus_mask = CPU_MASK_ALL, .nr_cpus_allowed= NR_CPUS, .mm = NULL, diff --git a/init/initramfs.c b/init/initramfs.c index af27abc59643..a842c0544745 100644 --- a/init/initramfs.c +++ b/init/initramfs.c @@ -15,6 +15,7 @@ #include <linux/mm.h> #include <linux/namei.h> #include <linux/init_syscalls.h> +#include <linux/umh.h> static ssize_t __init xwrite(struct file *file, const char *p, size_t count, loff_t *pos) @@ -727,6 +728,7 @@ static int __init populate_rootfs(void) { initramfs_cookie = async_schedule_domain(do_populate_rootfs, NULL, &initramfs_domain); + usermodehelper_enable(); if (!initramfs_async) wait_for_initramfs(); return 0; diff --git a/init/main.c b/init/main.c index f5b8246e8aa1..733e1471d95f 100644 --- a/init/main.c +++ b/init/main.c @@ -397,6 +397,12 @@ static int __init bootconfig_params(char *param, char *val, return 0; } +static int __init warn_bootconfig(char *str) +{ + /* The 'bootconfig' has been handled by bootconfig_params(). */ + return 0; +} + static void __init setup_boot_config(void) { static char tmp_cmdline[COMMAND_LINE_SIZE] __initdata; @@ -475,9 +481,8 @@ static int __init warn_bootconfig(char *str) pr_warn("WARNING: 'bootconfig' found on the kernel command line but CONFIG_BOOT_CONFIG is not set.\n"); return 0; } -early_param("bootconfig", warn_bootconfig); - #endif +early_param("bootconfig", warn_bootconfig); /* Change NUL term back to "=", to make "param" the whole string. */ static void __init repair_env_string(char *param, char *val) @@ -772,6 +777,8 @@ void __init __weak poking_init(void) { } void __init __weak pgtable_cache_init(void) { } +void __init __weak trap_init(void) { } + bool initcall_debug; core_param(initcall_debug, initcall_debug, bool, 0644); @@ -1221,7 +1228,7 @@ trace_initcall_start_cb(void *data, initcall_t fn) { ktime_t *calltime = (ktime_t *)data; - printk(KERN_DEBUG "calling %pS @ %i\n", fn, task_pid_nr(current)); + printk(KERN_DEBUG "calling %pS @ %i irqs_disabled() %d\n", fn, task_pid_nr(current), irqs_disabled()); *calltime = ktime_get(); } @@ -1235,8 +1242,8 @@ trace_initcall_finish_cb(void *data, initcall_t fn, int ret) rettime = ktime_get(); delta = ktime_sub(rettime, *calltime); duration = (unsigned long long) ktime_to_ns(delta) >> 10; - printk(KERN_DEBUG "initcall %pS returned %d after %lld usecs\n", - fn, ret, duration); + printk(KERN_DEBUG "initcall %pS returned %d after %lld usecs, irqs_disabled() %d\n", + fn, ret, duration, irqs_disabled()); } static ktime_t initcall_calltime; @@ -1387,7 +1394,6 @@ static void __init do_basic_setup(void) driver_init(); init_irq_proc(); do_ctors(); - usermodehelper_enable(); do_initcalls(); } diff --git a/init/noinitramfs.c b/init/noinitramfs.c index 3d62b07f3bb9..d1d26b93d25c 100644 --- a/init/noinitramfs.c +++ b/init/noinitramfs.c @@ -10,6 +10,7 @@ #include <linux/kdev_t.h> #include <linux/syscalls.h> #include <linux/init_syscalls.h> +#include <linux/umh.h> /* * Create a simple rootfs that is similar to the default initramfs @@ -18,6 +19,7 @@ static int __init default_rootfs(void) { int err; + usermodehelper_enable(); err = init_mkdir("/dev", 0755); if (err < 0) goto out; |