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linux/arch/mn10300
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David Howells 9ee21723cc MN10300: gdbstub: Restrict single-stepping to non-preemptable non-SMP configs 
Restrict single-stepping through the kernel using gdbstub to non-preemptable
non-SMP configs as gdbstub has to do software single-stepping by means of
temporary breakpoints.  Hardware single-stepping is unavailable as Panasonic
have not sufficiently documented the interface to it.

Software single-stepping through preemptable or SMP kernels runs into problems
as it makes it much more likely that the wrong thread will hit the temporary
breakpoints.  It seems impractical to work around the problem for the most
part.  It could be possible to make a UP preemptable kernel switch temporary
breakpoints in and out in switch_to().

Signed-off-by: David Howells <dhowells@redhat.com>
2011-03-18 16:54:29 +00:00
..
boot MN10300: And Panasonic AM34 subarch and implement SMP 2010-10-27 17:28:55 +01:00
configs kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT 2011-01-20 17:02:05 -08:00
include/asm MN10300: Remove unused mn10300_intc_* functions 2011-03-18 16:52:51 +00:00
kernel MN10300: gdbstub: Restrict single-stepping to non-preemptable non-SMP configs 2011-03-18 16:54:29 +00:00
lib MN10300: And Panasonic AM34 subarch and implement SMP 2010-10-27 17:28:55 +01:00
mm MN10300: The SMP_ICACHE_INV_FLUSH_RANGE IPI command does not exist 2011-03-14 14:45:29 +00:00
oprofile MN10300: Kill MN10300's own profiling Kconfig 2009-04-09 10:53:16 -07:00
proc-mn2ws0050 MN10300: And Panasonic AM34 subarch and implement SMP 2010-10-27 17:28:55 +01:00
proc-mn103e010 MN10300: Change "Matsushita" to "Panasonic". 2010-10-27 17:29:00 +01:00
unit-asb2303 MN10300: Generic time support 2010-10-27 17:28:57 +01:00
unit-asb2305 MN10300: Generic time support 2010-10-27 17:28:57 +01:00
unit-asb2364 MN10300: Clear ASB2364 peripheral interrupt masks before enabling interrupts 2011-03-18 16:52:54 +00:00
Kconfig MN10300: Select GENERIC_HARDIRQS_NO_DEPRECATED 2011-03-18 16:52:53 +00:00
Kconfig.debug MN10300: gdbstub: Restrict single-stepping to non-preemptable non-SMP configs 2011-03-18 16:54:29 +00:00
Makefile MN10300: And Panasonic AM34 subarch and implement SMP 2010-10-27 17:28:55 +01:00