user/sven/linux.git/drivers/tty/vt/selection.c, branch v3.4.71

vt: tackle the main part of the selection logic

2012-03-08T19:11:39Z

We leave the existing paste mess alone and just fix up the vt side of things. Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman

vt: push down tioclinux cases

2012-03-08T19:10:27Z

Some of this ventures into selection which is still a complete lost cause. We are not making it any worse. It's completely busted anyway. Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman

vt:tackle kbd_table

2012-03-08T18:50:35Z

Keyboard struct lifetime is easy, but the locking is not and is completely ignored by the existing code. Tackle this one head on - Make the kbd_table private so we can run down all direct users - Hoick the relevant ioctl handlers into the keyboard layer - Lock them with the keyboard lock so they don't change mid keypress - Add helpers for things like console stop/start so we isolate the poking around properly - Tweak the braille console so it still builds There are a couple of FIXME locking cases left for ioctls that are so hideous they should be addressed in a later patch. After this patch the kbd_table is private and all the keyboard jiggery pokery is in one place. This update fixes speakup and also a memory leak in the original. Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman

TTY: remove tty_locked

2011-08-23T17:34:07Z

We used it really only serial and ami_serial. The rest of the callsites were BUG/WARN_ONs to check if BTM is held. Now that we pruned tty_locked from both of the real users, we can get rid of tty_lock along with __big_tty_mutex_owner. Signed-off-by: Jiri Slaby Acked-by: Arnd Bergmann Cc: Alan Cox Signed-off-by: Greg Kroah-Hartman

Revert "tty: make receive_buf() return the amout of bytes received"

2011-06-03T21:33:24Z

This reverts commit b1c43f82c5aa265442f82dba31ce985ebb7aa71c. It was broken in so many ways, and results in random odd pty issues. It re-introduced the buggy schedule_work() in flush_to_ldisc() that can cause endless work-loops (see commit a5660b41af6a: "tty: fix endless work loop when the buffer fills up"). It also used an "unsigned int" return value fo the ->receive_buf() function, but then made multiple functions return a negative error code, and didn't actually check for the error in the caller. And it didn't actually work at all. BenH bisected down odd tty behavior to it: "It looks like the patch is causing some major malfunctions of the X server for me, possibly related to PTYs. For example, cat'ing a large file in a gnome terminal hangs the kernel for -minutes- in a loop of what looks like flush_to_ldisc/workqueue code, (some ftrace data in the quoted bits further down). ... Some more data: It -looks- like what happens is that the flush_to_ldisc work queue entry constantly re-queues itself (because the PTY is full ?) and the workqueue thread will basically loop forver calling it without ever scheduling, thus starving the consumer process that could have emptied the PTY." which is pretty much exactly the problem we fixed in a5660b41af6a. Milton Miller pointed out the 'unsigned int' issue. Reported-by: Benjamin Herrenschmidt Reported-by: Milton Miller Cc: Stefan Bigler Cc: Toby Gray Cc: Felipe Balbi Cc: Greg Kroah-Hartman Cc: Alan Cox Signed-off-by: Linus Torvalds

tty: make receive_buf() return the amout of bytes received

2011-04-23T00:31:53Z

it makes it simpler to keep track of the amount of bytes received and simplifies how flush_to_ldisc counts the remaining bytes. It also fixes a bug of lost bytes on n_tty when flushing too many bytes via the USB serial gadget driver. Tested-by: Stefan Bigler Tested-by: Toby Gray Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman

tty: remove invalid location line in file header

2011-04-19T23:33:36Z

remove invalid location line in each file header after location moved from driver/char to driver/tty Signed-off-by: Jovi Zhang Signed-off-by: Greg Kroah-Hartman

drivers: remove extraneous includes of smp_lock.h

2011-03-01T23:02:40Z

These were missed the last time I cleaned this up globally, because of code moving around or new code getting merged. Signed-off-by: Arnd Bergmann

console: rename acquire/release_console_sem() to console_lock/unlock()

2011-01-26T00:50:06Z

The -rt patches change the console_semaphore to console_mutex. As a result, a quite large chunk of the patches changes all acquire/release_console_sem() to acquire/release_console_mutex() This commit makes things use more neutral function names which dont make implications about the underlying lock. The only real change is the return value of console_trylock which is inverted from try_acquire_console_sem() This patch also paves the way to switching console_sem from a semaphore to a mutex. [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: make console_trylock return 1 on success, per Geert] Signed-off-by: Torben Hohn Cc: Thomas Gleixner Cc: Greg KH Cc: Ingo Molnar Cc: Geert Uytterhoeven Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

TTY: create drivers/tty/vt and move the vt code there

2010-11-05T15:16:52Z

The vt and other related code is moved into the drivers/tty/vt directory. Acked-by: Arnd Bergmann Cc: Jiri Slaby Cc: Alan Cox Signed-off-by: Greg Kroah-Hartman