linux-toradex.git/drivers/char/sysrq.c, branch v2.6.30.9

sysrq, intel_fb: fix sysrq g collision

2009-05-15T12:56:24+00:00

Commit 79e539453b34e35f39299a899d263b0a1f1670bd introduced a
regression where you cannot use sysrq 'g' to enter kgdb.  The solution
is to move the intel fb sysrq over to V for video instead of G for
graphics.  The SMP VOYAGER code to register for the sysrq-v is not
anywhere to be found in the mainline kernel, so the comments in the
code were cleaned up as well.

This patch also cleans up the sysrq definitions for kgdb to make it
generic for the kernel debugger, such that the sysrq 'g' can be used
in the future to enter a gdbstub or another kernel debugger.

Signed-off-by: Jason Wessel 
Acked-by: Jesse Barnes 
Acked-by: Randy Dunlap 
Signed-off-by: Andrew Morton

sysrq: remove duplicated #include

2009-04-13T22:04:31+00:00

Remove duplicated #include in drivers/char/sysrq.c.

Signed-off-by: Huang Weiyi 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge branch 'tracing/core-v2' into tracing-for-linus

2009-04-01T22:49:02+00:00

Conflicts:
	include/linux/slub_def.h
	lib/Kconfig.debug
	mm/slob.c
	mm/slub.c

Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6

2009-04-01T16:22:24+00:00

* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
  [S390] cio: online_store - trigger recognition for boxed devices
  [S390] cio: disallow online setting of device in transient state
  [S390] cio: introduce notifier for boxed state
  [S390] cio: introduce ccw_device_schedule_sch_unregister
  [S390] cio: wake up on failed recognition
  [S390] fix hypfs build failure
  [PATCH] sysrq: include interrupt.h instead of irq.h

filesystem freeze: allow SysRq emergency thaw to thaw frozen filesystems

2009-04-01T15:59:17+00:00

Now that the filesystem freeze operation has been elevated to the VFS, and
is just an ioctl away, some sort of safety net for unintentionally frozen
root filesystems may be in order.

The timeout thaw originally proposed did not get merged, but perhaps
something like this would be useful in emergencies.

For example, freeze /path/to/mountpoint may freeze your root filesystem if
you forgot that you had that unmounted.

I chose 'j' as the last remaining character other than 'h' which is sort
of reserved for help (because help is generated on any unknown character).

I've tested this on a non-root fs with multiple (nested) freezers, as well
as on a system rendered unresponsive due to a frozen root fs.

[randy.dunlap@oracle.com: emergency thaw only if CONFIG_BLOCK enabled]
Signed-off-by: Eric Sandeen 
Cc: Takashi Sato 
Signed-off-by: Randy Dunlap 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] sysrq: include interrupt.h instead of irq.h

2009-03-31T17:14:32+00:00

With "cpumask: update irq_desc to use cpumask_var_t"
we get this build failure on s390:

  CC      drivers/char/sysrq.o
In file included from drivers/char/sysrq.c:38:
include/linux/irq.h: In function 'init_alloc_desc_masks':
include/linux/irq.h:442: error: dereferencing pointer to incomplete type

drivers/char/sysrq.c should include interrupt.h instead of irq.h.

Cc: Mike Travis 
Cc: Ingo Molnar 
Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

Merge branch 'tracing/ftrace'; commit 'v2.6.29-rc2' into tracing/core

2009-01-18T19:15:05+00:00

sysrq: add commentary on why we use the console loglevel over using KERN_EMERG

2009-01-16T00:39:36+00:00

Add an explanitory comment as to why we modify the kernel console loglevel
rather than simply moving sysrq messages to KERN_EMERG level.

Signed-off-by: Andy Whitcroft 
Cc: Randy Dunlap 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge commit 'v2.6.29-rc1' into tracing/urgent

2009-01-11T02:43:52+00:00

sysrq: more explicit, less terse help messages

2009-01-06T23:59:14+00:00

Eliminate sysrq terse help mode; make sysrq help messages more meaningful
(more explicit/verbose).  Make the sysrq action letter clearer by listing
it explicitly in more sysrq help messages (when it is not simple/clear).

The SysRq help message now looks like this:

SysRq : HELP : loglevel(0-9) reBoot terminate-all-tasks(E) memory-full-oom-kill(F) kill-all-tasks(I) saK show-backtrace-all-active-cpus(L) show-memory-usage(M) nice-all-RT-tasks(N) powerOff show-registers(P) show-all-timers(Q) unRaw Sync show-task-states(T) Unmount show-blocked-tasks(W)

Addresses http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=330403.

Signed-off-by: Randy Dunlap 
Cc: 
Cc: <330403@bugs.debian.org>
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds