Fix the passing of printk output back to the mconsole client. The existing
code was somewhat confused, accumulating output in a buffer, but writing it
out entirely whenever a new chunk was added. This is fixed.
The earlier include cleanups caused linux/sysrq.h to not be included - this is
fixed by adding the include back, under CONFIG_MAGIC_SYSRQ.
CONFIG_MAGIC_SYSRQ is also defaulted to on in defconfig.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
54fa0ba406