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authorArnd Bergmann <arnd@arndb.de>2010-08-06 21:40:30 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2010-08-10 13:47:44 -0700
commitb07471fa51358ce64cc25e1501544502362e4404 (patch)
tree0bd1889eb3cbabe51f15cc5e971f9644cdced0f3 /drivers/char/Makefile
parentddcd9fb66ae7f448b517242c10a31d4e17bcad45 (diff)
downloadop-kernel-dev-b07471fa51358ce64cc25e1501544502362e4404.zip
op-kernel-dev-b07471fa51358ce64cc25e1501544502362e4404.tar.gz
tty: implement BTM as mutex instead of BKL
The tty locking now follows the rules for mutexes, so we can replace the BKL usage with a new subsystem wide mutex. Using a regular mutex here will change the behaviour when blocked on the BTM from spinning to sleeping, but that should not be visible to the user. Using the mutex also means that all the BTM is now covered by lockdep. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/char/Makefile')
-rw-r--r--drivers/char/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index 273cee1..dc96416 100644
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -9,6 +9,7 @@ FONTMAPFILE = cp437.uni
obj-y += mem.o random.o tty_io.o n_tty.o tty_ioctl.o tty_ldisc.o tty_buffer.o tty_port.o
+obj-y += tty_mutex.o
obj-$(CONFIG_LEGACY_PTYS) += pty.o
obj-$(CONFIG_UNIX98_PTYS) += pty.o
obj-y += misc.o
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