]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
console: prevent registered consoles from dumping old kernel message over again
authorFeng Tang <feng.tang@intel.com>
Tue, 22 Mar 2011 23:34:21 +0000 (16:34 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 23 Mar 2011 00:44:12 +0000 (17:44 -0700)
commitfe3d8ad31cf51b062bbb8a9609eeb1d0c41a7f30
treef0e0f85582a695d0da7bae97897835ee51a0ab09
parent7bf693951a8e5f7e600a45b74d91d962a453146e
console: prevent registered consoles from dumping old kernel message over again

For a platform with many consoles like:
 "console=tty1 console=ttyMFD2 console=ttyS0 earlyprintk=mrst"

Each time when the non "selected_console" (tty1 and ttyMFD2 here) get
registered, the existing kernel message will be printed out on registered
consoles again, the "mrst" early console will get some same message for 3
times, and "tty1" will get some for twice.

As suggested by Andrew Morton, every time a new console is registered, it
will be set as the "exclusive" console which will dump the already
existing kernel messages.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Cc: Greg KH <gregkh@suse.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
kernel/printk.c