diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-07-03 08:30:13 -0500 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2009-07-29 23:30:41 +0200 |
| commit | d0cd6d95886e800ac64e1467b6ec262a7d8782fd (patch) | |
| tree | 6794665b1b97eaa79ae7f73c421d5abd2176fb78 /init | |
| parent | 95f7788a0fa52bda1c9ec6af165c6c7931811bff (diff) | |
| download | lwn-d0cd6d95886e800ac64e1467b6ec262a7d8782fd.tar.gz lwn-d0cd6d95886e800ac64e1467b6ec262a7d8782fd.zip | |
init: show enabled debugs
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'init')
| -rw-r--r-- | init/main.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/init/main.c b/init/main.c index 1da16501aa9f..03aab770c824 100644 --- a/init/main.c +++ b/init/main.c @@ -452,6 +452,8 @@ static noinline void __init_refok rest_init(void) { int pid; + system_state = SYSTEM_BOOTING_SCHEDULER_OK; + kernel_thread(kernel_init, NULL, CLONE_FS | CLONE_SIGHAND); numa_default_policy(); pid = kernel_thread(kthreadd, NULL, CLONE_FS | CLONE_FILES); @@ -715,6 +717,9 @@ asmlinkage void __init start_kernel(void) ftrace_init(); +#ifdef CONFIG_PREEMPT_RT + WARN_ON(irqs_disabled()); +#endif /* Do the rest non-__init'ed, we're now alive */ rest_init(); } @@ -817,9 +822,11 @@ static void __init do_basic_setup(void) static void __init do_pre_smp_initcalls(void) { initcall_t *call; + extern int spawn_desched_task(void); for (call = __initcall_start; call < __early_initcall_end; call++) do_one_initcall(*call); + spawn_desched_task(); } static void run_init_process(char *init_filename) @@ -855,6 +862,9 @@ static noinline int init_post(void) printk(KERN_WARNING "Failed to execute %s\n", ramdisk_execute_command); } +#ifdef CONFIG_PREEMPT_RT + WARN_ON(irqs_disabled()); +#endif /* * We try each of these until one succeeds. @@ -921,7 +931,51 @@ static int __init kernel_init(void * unused) ramdisk_execute_command = NULL; prepare_namespace(); } +#ifdef CONFIG_PREEMPT_RT + WARN_ON(irqs_disabled()); +#endif + +#define DEBUG_COUNT (defined(CONFIG_DEBUG_RT_MUTEXES) + defined(CONFIG_CRITICAL_PREEMPT_TIMING) + defined(CONFIG_CRITICAL_IRQSOFF_TIMING) + defined(CONFIG_FUNCTION_TRACE) + defined(CONFIG_DEBUG_SLAB) + defined(CONFIG_DEBUG_PAGEALLOC) + defined(CONFIG_LOCKDEP)) +#if DEBUG_COUNT > 0 + printk(KERN_ERR "*****************************************************************************\n"); + printk(KERN_ERR "* *\n"); +#if DEBUG_COUNT == 1 + printk(KERN_ERR "* REMINDER, the following debugging option is turned on in your .config: *\n"); +#else + printk(KERN_ERR "* REMINDER, the following debugging options are turned on in your .config: *\n"); +#endif + printk(KERN_ERR "* *\n"); +#ifdef CONFIG_DEBUG_RT_MUTEXES + printk(KERN_ERR "* CONFIG_DEBUG_RT_MUTEXES *\n"); +#endif +#ifdef CONFIG_CRITICAL_PREEMPT_TIMING + printk(KERN_ERR "* CONFIG_CRITICAL_PREEMPT_TIMING *\n"); +#endif +#ifdef CONFIG_CRITICAL_IRQSOFF_TIMING + printk(KERN_ERR "* CONFIG_CRITICAL_IRQSOFF_TIMING *\n"); +#endif +#ifdef CONFIG_FUNCTION_TRACE + printk(KERN_ERR "* CONFIG_FUNCTION_TRACE *\n"); +#endif +#ifdef CONFIG_DEBUG_SLAB + printk(KERN_ERR "* CONFIG_DEBUG_SLAB *\n"); +#endif +#ifdef CONFIG_DEBUG_PAGEALLOC + printk(KERN_ERR "* CONFIG_DEBUG_PAGEALLOC *\n"); +#endif +#ifdef CONFIG_LOCKDEP + printk(KERN_ERR "* CONFIG_LOCKDEP *\n"); +#endif + printk(KERN_ERR "* *\n"); +#if DEBUG_COUNT == 1 + printk(KERN_ERR "* it may increase runtime overhead and latencies. *\n"); +#else + printk(KERN_ERR "* they may increase runtime overhead and latencies. *\n"); +#endif + printk(KERN_ERR "* *\n"); + printk(KERN_ERR "*****************************************************************************\n"); +#endif /* * Ok, we have completed the initial bootup, and * we're essentially up and running. Get rid of the |