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linux/drivers/tty
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Ivo Sieben bd5d7ce9af tty: Only wakeup the line discipline idle queue when queue is active 
Before waking up the tty line discipline idle queue first check if the queue is
active (non empty). This prevents unnecessary entering the critical section in
the wake_up() function and therefore avoid needless scheduling overhead on a
PREEMPT_RT system caused by two processes being in the same critical section.

Signed-off-by: Ivo Sieben <meltedpianoman@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-15 23:02:22 -08:00
..
hvc TTY: hvsi: use for_each_compatible_node() macro 2013-01-15 23:00:43 -08:00
ipwireless TTY: switch tty_flip_buffer_push 2013-01-15 22:30:15 -08:00
serial drivers/tty/serial: extern function which for release resource, need check pointer, before free it 2013-01-15 23:00:44 -08:00
vt TTY: switch tty_schedule_flip 2013-01-15 22:43:15 -08:00
amiserial.c TTY: switch tty_flip_buffer_push 2013-01-15 22:30:15 -08:00
bfin_jtag_comm.c TTY: switch tty_flip_buffer_push 2013-01-15 22:30:15 -08:00
cyclades.c cyclades: push down tty_port_tty_get 2013-01-15 22:43:15 -08:00
ehv_bytechan.c TTY: switch tty_flip_buffer_push 2013-01-15 22:30:15 -08:00
isicom.c TTY: switch tty_flip_buffer_push 2013-01-15 22:30:15 -08:00
Kconfig Merge branch 'for-upstream' of http://github.com/agraf/linux-2.6 into queue 2012-10-10 19:03:54 -03:00
Makefile tty/powerpc: introduce the ePAPR embedded hypervisor byte channel driver 2011-08-23 10:32:56 -07:00
moxa.c TTY: switch tty_schedule_flip 2013-01-15 22:43:15 -08:00
moxa.h tty: move a number of tty drivers from drivers/char/ to drivers/tty/ 2011-02-22 16:14:56 -08:00
mxser.c TTY: switch tty_flip_buffer_push 2013-01-15 22:30:15 -08:00
mxser.h Fix common misspellings 2011-03-31 11:26:23 -03:00
n_gsm.c Revert "n_gsm.c: add tx_lock in gsm_send" 2013-01-15 22:48:15 -08:00
n_hdlc.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
n_r3964.c tty: localise the lock 2012-08-10 12:55:47 -07:00
n_tracerouter.c n_tracerouter and n_tracesink ldisc additions. 2011-05-13 16:31:00 -07:00
n_tracesink.c n_tracerouter and n_tracesink ldisc additions. 2011-05-13 16:31:00 -07:00
n_tracesink.h n_tracerouter and n_tracesink ldisc additions. 2011-05-13 16:31:00 -07:00
n_tty.c tty: add missing newlines to WARN_RATELIMIT 2012-10-25 11:30:27 -07:00
nozomi.c TTY: nozomi, remove dead code 2013-01-15 22:43:16 -08:00
pty.c TTY: do not reset master's packet mode 2013-01-15 22:49:36 -08:00
rocket.c tty: add parenthesis to macro POLL_PERIOD in rocket.c 2013-01-15 22:49:36 -08:00
rocket.h tty: move a number of tty drivers from drivers/char/ to drivers/tty/ 2011-02-22 16:14:56 -08:00
rocket_int.h tty: move a number of tty drivers from drivers/char/ to drivers/tty/ 2011-02-22 16:14:56 -08:00
synclink.c TTY: switch tty_flip_buffer_push 2013-01-15 22:30:15 -08:00
synclink_gt.c TTY: synclink, remove unneeded tests 2013-01-15 22:43:15 -08:00
synclinkmp.c TTY: synclink, remove unneeded tests 2013-01-15 22:43:15 -08:00
sysrq.c mm, oom: ensure sysrq+f always passes valid zonelist 2012-11-15 17:13:48 -08:00
tty_audit.c TTY: audit, stop accessing tty->icount 2012-10-22 16:50:54 -07:00
tty_buffer.c TTY: switch tty_schedule_flip 2013-01-15 22:43:15 -08:00
tty_io.c tty: Fix comments that reference BKL, eventd, old paths 2013-01-15 21:57:44 -08:00
tty_ioctl.c tty: pty - Move TIOCPKT handling into pty.c 2012-10-25 12:07:18 -07:00
tty_ldisc.c tty: Only wakeup the line discipline idle queue when queue is active 2013-01-15 23:02:22 -08:00
tty_mutex.c tty: tty_mutex.c: Fixed coding style warning (using printk) 2012-10-24 11:34:51 -07:00
tty_port.c TTY: introduce tty_port_destroy 2012-11-15 17:20:58 -08:00