Prev: [PATCH 03/10] tty: fix console_sem lock order
Next: [PATCH 04/10] cdc-acm: remove dead code
From: Arnd Bergmann on 15 May 2010 17:10
This is the third attempt to get the BKL out of the
TTY code. This version goes much further than the
previous one, and eliminates most of the code I
had introduced there.

What remains of the series are changes to the existing
BKL usage in the TTY layer to avoid depending on
the autorelease-during-sleep or the recursive
behavior. The final patch simply adds the option
to replace the BKL with a plain mutex.

The series is available as a git tree in the bkl/tty branch of
git://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git
There is also a bkl/tty-history branch with a much
more detailed series that I used to get to this point.
Both series are bisectable.

Arnd Bergmann (10):
tty: replace BKL with a new tty_lock
tty: never hold BTM while getting tty_mutex
tty: fix console_sem lock order
cdc-acm: remove dead code
tty: introduce wait_event_interruptible_tty
tty: annotate tty_write_lock
tty: reorder ldisc locking
tty: untangle locking of wait_until_sent
tty: remove tty_lock_nested
tty: implement BTM as mutex instead of BKL

drivers/char/Makefile | 1 +
drivers/char/amiserial.c | 23 ++++--
drivers/char/briq_panel.c | 6 +-
drivers/char/cyclades.c | 2 +-
drivers/char/istallion.c | 12 ++-
drivers/char/n_hdlc.c | 16 ++--
drivers/char/n_r3964.c | 10 ++--
drivers/char/pty.c | 24 +++----
drivers/char/selection.c | 13 +++-
drivers/char/serial167.c | 4 +-
drivers/char/stallion.c | 2 +
drivers/char/sx.c | 12 ++--
drivers/char/tty_io.c | 138 ++++++++++++++++++++++-----------------
drivers/char/tty_ldisc.c | 43 +++++++++----
drivers/char/tty_mutex.c | 47 ++++++++++++++
drivers/char/tty_port.c | 2 +-
drivers/char/vc_screen.c | 4 +-
drivers/char/vt_ioctl.c | 12 ++--
drivers/serial/68360serial.c | 2 -
drivers/serial/crisv10.c | 6 +-
drivers/serial/serial_core.c | 39 ++++++++----
drivers/usb/class/cdc-acm.c | 12 +---
drivers/video/console/vgacon.c | 2 -
include/linux/tty.h | 64 ++++++++++++++++++
lib/Kconfig.debug | 10 +++
25 files changed, 338 insertions(+), 168 deletions(-)
create mode 100644 drivers/char/tty_mutex.c

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo(a)vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
 | 
Pages: 1
Prev: [PATCH 03/10] tty: fix console_sem lock order
Next: [PATCH 04/10] cdc-acm: remove dead code