Add compile-time 'ARC_SMART_TRACE' option for enabling SmaRT support. Small real time trace (SmaRT) is an optional on-chip debug hardware component that captures instruction-trace history. It stores the address of the most recent non-sequential instructions executed into internal buffer. NOTE: this PATCH series has prerequisite: http://patchwork.ozlabs.org/patch/986820/ Changes RFCv2->PATCHv1: * Move smart_exists, smart_supported and smart_stack_size functions to smart.h * Improve Kconfig SmaRT help description. * Other minor changes. Changes RFCv1->RFCv2: * Changes in output display: * Only print VMAs if they are changed. * Split entry for two lines and print source and destination addresses on different lines. * Add procfs options to configure/suspend SmaRT in runtime. * Add SmaRT version check. Limit supported SmaRT versions to >= 0x03. * Move all SmaRT related stuff to smart.h and smart.c * Other minor changes. Eugeniy Paltsev (3): ARC: split show_faulting_vma for logic and representation parts ARC: ARCv2: Introduce SmaRT support ARC: show detaled SmaRT configuration in mumbojumbo arch/arc/Kconfig | 12 ++ arch/arc/include/asm/arcregs.h | 23 ++++ arch/arc/include/asm/bug.h | 9 ++ arch/arc/include/asm/smart.h | 62 ++++++++++ arch/arc/kernel/Makefile | 1 + arch/arc/kernel/setup.c | 21 +++- arch/arc/kernel/smart.c | 253 +++++++++++++++++++++++++++++++++++++++++ arch/arc/kernel/traps.c | 8 ++ arch/arc/kernel/troubleshoot.c | 46 ++++++-- arch/arc/mm/fault.c | 2 + 10 files changed, 420 insertions(+), 17 deletions(-) create mode 100644 arch/arc/include/asm/smart.h create mode 100644 arch/arc/kernel/smart.c -- 2.14.5
