Hi all,
In v8, addressed Jason's comments:
- Changed kgdb_enable_nmi() weak function to kgdb_arch callbck; - We no longer register disable_nmi command if arch does not register KGDB NMI handling (i.e. not filling kgdb_arch.enable_nmi callback); - The same is for ttyNMI: if architecure does not provide us with enable_nmi call, we don't need the tty device. Of course, there is no way to tell wether a specific serial device can be used for NMI debugging, as it is not serial-device specific, but specific to whether IRQ can be rerouted to an NMI (for most our cases, pretty much every IRQ can be rerouted, e.g. a hot-pluggable serial device on a PCI bus). - Rebased on the latest and greatest tty-next, just in case.
These patches can be found in the following repo (based on tty-next):
git://git.infradead.org/users/cbou/linux-nmi-kdb.git master
Old changelogs and rationale for these patches can be found here:
v1-v5, rationale: http://lkml.org/lkml/2012/9/10/2 v6: http://lkml.org/lkml/2012/9/10/2 v7: http://lkml.org/lkml/2012/9/13/367
Thanks,
-- arch/arm/Kconfig | 19 ++ arch/arm/common/vic.c | 28 +++ arch/arm/include/asm/hardware/vic.h | 2 + arch/arm/include/asm/kgdb.h | 8 + arch/arm/kernel/Makefile | 1 + arch/arm/kernel/entry-armv.S | 167 +------------ arch/arm/kernel/entry-header.S | 170 +++++++++++++ arch/arm/kernel/kgdb_fiq.c | 124 +++++++++ arch/arm/kernel/kgdb_fiq_entry.S | 87 +++++++ arch/arm/mach-versatile/Makefile | 1 + arch/arm/mach-versatile/kgdb_fiq.c | 31 +++ drivers/tty/serial/Kconfig | 19 ++ drivers/tty/serial/Makefile | 1 + drivers/tty/serial/amba-pl011.c | 73 +++++- drivers/tty/serial/kgdb_nmi.c | 402 ++++++++++++++++++++++++++++++ drivers/tty/serial/kgdboc.c | 9 + drivers/tty/serial/serial_core.c | 17 ++ include/linux/kdb.h | 29 ++- include/linux/kgdb.h | 13 + include/linux/serial_core.h | 1 + kernel/debug/debug_core.c | 14 +- kernel/debug/kdb/kdb_main.c | 31 +++ 22 files changed, 1054 insertions(+), 193 deletions(-)