(adding Andrew) On Fri, Jun 16, 2017 at 04:57:10PM +1000, Nicholas Piggin wrote: > This is the latest series to make the hardlockup watchdog more > easily replaceable by arch code. The last patch provides some > justification for why we want to do this (existing sparc watchdog > is another that could benefit). > > Since last time, we tidied up the Kconfig approach so it was not > so jumbled -- Thanks Don and Babu for help and suggestions there.
Thanks Nick! I think this version is good enough for now. > > Since last posting the powerpc patch, I re-added the soft-NMI > watchdog, but have it using the emergency stack so we can always > avoid the process stacks when perf interrupts are soft-masked. > > I'm not sure of the best strategy to merge this. The powerpc > watchdog is too much to carry anywhere but powerpc tree now, and > watchdog patches seem to go via Andrew... Andrew, suggestions here? Reviewed-by: Don Zickus <[email protected]> Acked-by: Don Zickus <[email protected]> > > Thanks, > Nick > > Nicholas Piggin (5): > watchdog: remove unused declaration > watchdog: introduce arch_touch_nmi_watchdog() > watchdog: split up config options > watchdog: provide watchdog_reconfigure() for arch watchdogs > powerpc/64s: implement arch-specific hardlockup watchdog > > arch/Kconfig | 23 ++ > arch/blackfin/include/asm/nmi.h | 2 + > arch/blackfin/kernel/nmi.c | 2 +- > arch/mn10300/include/asm/nmi.h | 2 + > arch/mn10300/kernel/mn10300-watchdog-low.S | 8 +- > arch/mn10300/kernel/mn10300-watchdog.c | 2 +- > arch/powerpc/Kconfig | 6 +- > arch/powerpc/include/asm/nmi.h | 11 + > arch/powerpc/include/asm/smp.h | 2 + > arch/powerpc/kernel/Makefile | 1 + > arch/powerpc/kernel/exceptions-64s.S | 30 ++- > arch/powerpc/kernel/kvm.c | 7 + > arch/powerpc/kernel/setup_64.c | 19 -- > arch/powerpc/kernel/smp.c | 20 +- > arch/powerpc/kernel/watchdog.c | 388 > +++++++++++++++++++++++++++++ > arch/sparc/include/asm/nmi.h | 1 + > arch/sparc/kernel/nmi.c | 6 +- > arch/x86/Kconfig | 1 + > arch/x86/kernel/apic/hw_nmi.c | 2 +- > include/linux/nmi.h | 57 +++-- > kernel/Makefile | 2 +- > kernel/sysctl.c | 31 ++- > kernel/watchdog.c | 268 +++++++++++++------- > kernel/watchdog_hld.c | 37 +-- > lib/Kconfig.debug | 45 ++-- > 25 files changed, 763 insertions(+), 210 deletions(-) > create mode 100644 arch/powerpc/kernel/watchdog.c > > -- > 2.11.0 >
