linux/kernel/debug/kdb
Jason Wessel f5316b4aea kgdb,8250,pl011: Return immediately from console poll
The design of the kdb shell requires that every device that can
provide input to kdb have a polling routine that exits immediately if
there is no character available.  This is required in order to get the
page scrolling mechanism working.

Changing the kernel debugger I/O API to require all polling character
routines to exit immediately if there is no data allows the kernel
debugger to process multiple input channels.

NO_POLL_CHAR will be the return code to the polling routine when ever
there is no character available.

CC: linux-serial@vger.kernel.org
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
2010-05-20 21:04:22 -05:00
..
.gitignore kdb: core for kgdb back end (1 of 2) 2010-05-20 21:04:20 -05:00
kdb_bp.c kdb: core for kgdb back end (1 of 2) 2010-05-20 21:04:20 -05:00
kdb_bt.c kdb: core for kgdb back end (1 of 2) 2010-05-20 21:04:20 -05:00
kdb_cmds kdb: core for kgdb back end (1 of 2) 2010-05-20 21:04:20 -05:00
kdb_debugger.c kgdb,8250,pl011: Return immediately from console poll 2010-05-20 21:04:22 -05:00
kdb_io.c kdb: core for kgdb back end (1 of 2) 2010-05-20 21:04:20 -05:00
kdb_main.c kdb: core for kgdb back end (1 of 2) 2010-05-20 21:04:20 -05:00
kdb_private.h kdb: core for kgdb back end (1 of 2) 2010-05-20 21:04:20 -05:00
kdb_support.c kdb: core for kgdb back end (1 of 2) 2010-05-20 21:04:20 -05:00
Makefile kdb: core for kgdb back end (1 of 2) 2010-05-20 21:04:20 -05:00