On Thu, Jan 29, 2015 at 11:14:14AM +0000, James Hogan wrote: > Implement KGDB IO operations for MIPS Fast Debug Channel (FDC). This can > be enabled via Kconfig, which also allows the channel number to be > chosen. > > The magic sysrq hack is implemented in the TTY driver, detecting just ^C > for the KGDB channel, and ^O followed by a letter for the FDC console > channel. > > The KGDB operations are reasonably efficient thanks to the flush > callback, with a 4 byte buffer being used in both directions to allow up > to 4 bytes to be encoded per FDC word. Reading of data for KGDB will > discard any data received on other channels, which clearly isn't ideal, > but given that there is a single FIFO shared between channels we can't > do much better. > > Signed-off-by: James Hogan <james.ho...@imgtec.com> > Cc: Ralf Baechle <r...@linux-mips.org> > Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org> > Cc: Jiri Slaby <jsl...@suse.cz> > Cc: Jason Wessel <jason.wes...@windriver.com> > Cc: linux-m...@linux-mips.org > Cc: kgdb-bugreport@lists.sourceforge.net
Acked-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> ------------------------------------------------------------------------------ Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Kgdb-bugreport mailing list Kgdb-bugreport@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kgdb-bugreport
