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Michael Ellerman 76a8ad2939 [PATCH] Make printk work for really early debugging 
Currently printk is no use for early debugging because it refuses to
actually print anything to the console unless
cpu_online(smp_processor_id()) is true.

The stated explanation is that console drivers may require per-cpu
resources, or otherwise barf, because the system is not yet setup
correctly.  Fair enough.

However some console drivers might be quite happy running early during
boot, in fact we have one, and so it'd be nice if printk understood that.

So I added a flag (which I would have called CON_BOOT, but that's taken)
called CON_ANYTIME, which indicates that a console is happy to be called
anytime, even if the cpu is not yet online.

Tested on a Power 5 machine, with both a CON_ANYTIME driver and a bogus
console driver that BUG()s if called while offline.  No problems AFAICT.
Built for i386 UP & SMP.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-25 10:01:05 -07:00
..
irq
[PATCH] adjust handle_IRR_event() return type
2006-06-23 07:43:08 -07:00
power
Add some basic resume trace facilities
2006-06-24 14:44:01 -07:00
.gitignore
gitignore: ignore more generated files
2006-01-03 11:35:26 +01:00
acct.c
[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry
2006-06-23 07:42:45 -07:00
audit.c
[PATCH] log more info for directory entry change events
2006-06-20 05:25:28 -04:00
audit.h
[PATCH] log more info for directory entry change events
2006-06-20 05:25:28 -04:00
auditfilter.c
[PATCH] log more info for directory entry change events
2006-06-20 05:25:28 -04:00
auditsc.c
[PATCH] Doc: add audit & acct to DocBook
2006-06-23 07:43:07 -07:00
capability.c
[PATCH] refactor capable() to one implementation, add __capable() helper
2006-03-25 08:22:56 -08:00
compat.c
[PATCH] move_pages: fix 32 -> 64 bit compat function
2006-06-23 07:42:53 -07:00
configs.c
update the email address of Randy Dunlap
2006-01-03 13:37:51 +01:00
cpu.c
[PATCH] Notifier chain update: API changes
2006-03-27 08:44:50 -08:00
cpuset.c
[PATCH] SELinux: add security hook call to mediate attach_task (kernel/cpuset.c)
2006-06-23 07:42:54 -07:00
dma.c
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
exec_domain.c
[PATCH] Fix module refcount leak in __set_personality()
2006-03-24 07:33:30 -08:00
exit.c
[PATCH] More BUG_ON conversion
2006-06-23 07:43:08 -07:00
extable.c
[PATCH] symbol_put_addr() locks kernel
2006-05-15 11:20:55 -07:00
fork.c
[PATCH] dup fd error fix
2006-06-23 07:43:04 -07:00
futex_compat.c
[PATCH] futex: check and validate timevals
2006-03-31 12:18:59 -08:00
futex.c
[PATCH] VFS: Permit filesystem to override root dentry on mount
2006-06-23 07:42:45 -07:00
hrtimer.c
[PATCH] Define __raw_get_cpu_var and use it
2006-06-25 10:01:01 -07:00
itimer.c
[PATCH] hrtimers: remove data field
2006-03-26 08:57:03 -08:00
kallsyms.c
[PATCH] fix missing includes
2005-10-30 17:37:32 -08:00
Kconfig.hz
[PATCH] i386: Selectable Frequency of the Timer Interrupt
2005-06-23 09:45:10 -07:00
Kconfig.preempt
[PATCH] sched: voluntary kernel preemption
2005-06-25 16:24:45 -07:00
kexec.c
[PATCH] Add a sysfs file to determine if a kexec kernel is loaded
2006-06-23 07:43:02 -07:00
kfifo.c
[PATCH] gfp flags annotations - part 1
2005-10-08 15:00:57 -07:00
kmod.c
[PATCH] wait_for_helper: trivial style cleanup
2006-03-28 18:36:41 -08:00
kprobes.c
[PATCH] kprobes: NULL out non-relevant fields in struct kretprobe
2006-04-20 07:54:03 -07:00
ksysfs.c
[PATCH] Add a sysfs file to determine if a kexec kernel is loaded
2006-06-23 07:43:02 -07:00
kthread.c
[PATCH] find_task_by_pid() needs tasklist_lock
2006-03-25 08:22:57 -08:00
Makefile
Finally remove the obnoxious inter_module_xxx()
2006-05-08 22:40:05 +01:00
module.c
[PATCH] ensure NULL deref can't possibly happen in is_exported()
2006-06-25 10:00:59 -07:00
mutex-debug.c
[PATCH] fix/simplify mutex debugging code
2006-01-11 08:14:16 -08:00
mutex-debug.h
[PATCH] mutex subsystem, debugging code
2006-01-09 15:59:20 -08:00
mutex.c
[PATCH] mutex: trivial whitespace cleanups
2006-01-10 14:27:59 -08:00
mutex.h
[PATCH] mutex subsystem, core
2006-01-09 15:59:19 -08:00
panic.c
[PATCH] the scheduled unexport of panic_timeout
2006-04-11 06:18:40 -07:00
params.c
[PATCH] Change dash2underscore() return value to char
2006-03-28 09:16:03 -08:00
pid.c
[PATCH] pidhash: Refactor the pid hash table
2006-03-31 12:19:00 -08:00
posix-cpu-timers.c
[PATCH] arm_timer: remove a racy and obsolete PF_EXITING check
2006-06-17 10:52:13 -07:00
posix-timers.c
[PATCH] hrtimers: remove data field
2006-03-26 08:57:03 -08:00
printk.c
[PATCH] Make printk work for really early debugging
2006-06-25 10:01:05 -07:00
profile.c
[PATCH] Remove __devinit and __cpuinit from notifier_call definitions
2006-04-26 08:30:03 -07:00
ptrace.c
ptrace_attach: fix possible deadlock schenario with irqs
2006-05-11 11:08:49 -07:00
rcupdate.c
[PATCH] Make RCU API inaccessible to non-GPL Linux kernel modules
2006-06-23 07:43:07 -07:00
rcutorture.c
[PATCH] for_each_possible_cpu: fixes for generic part
2006-03-28 09:16:05 -08:00
relay.c
[PATCH] relay: consolidate sendfile() and read() code
2006-03-23 19:58:45 +01:00
resource.c
[PATCH] kernel/resource.c: __check_region(): remove pointless __deprecated
2006-01-10 08:02:02 -08:00
sched.c
[PATCH] Define __raw_get_cpu_var and use it
2006-06-25 10:01:01 -07:00
seccomp.c
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
signal.c
[PATCH] collect sid of those who send signals to auditd
2006-06-20 05:25:21 -04:00
softirq.c
[PATCH] Remove __devinit and __cpuinit from notifier_call definitions
2006-04-26 08:30:03 -07:00
softlockup.c
[PATCH] Define __raw_get_cpu_var and use it
2006-06-25 10:01:01 -07:00
spinlock.c
[PATCH] BUILD_LOCK_OPS: cleanup preempt_disable() usage
2006-03-23 07:38:16 -08:00
stop_machine.c
[PATCH] Remove set_fs() in stop_machine()
2006-01-10 08:01:25 -08:00
sys_ni.c
[PATCH] sys_move_pages: 32bit support (i386, x86_64)
2006-06-23 07:42:53 -07:00
sys.c
[PATCH] Allow raw_notifier callouts to unregister themselves
2006-06-25 10:01:01 -07:00
sysctl.c
[PATCH] CONFIG_NET=n build fix
2006-06-23 07:43:06 -07:00
time.c
Fix comments: s/granuality/granularity/
2006-04-01 01:41:22 +02:00
timer.c
[PATCH] Define __raw_get_cpu_var and use it
2006-06-25 10:01:01 -07:00
uid16.c
[PATCH] Add more prevent_tail_call()
2006-04-19 16:27:18 -07:00
user.c
[PATCH] selinux: add hooks for key subsystem
2006-06-22 15:05:55 -07:00
wait.c
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
workqueue.c
[PATCH] list: use list_replace_init() instead of list_splice_init()
2006-06-23 07:43:07 -07:00