• Russell King's avatar
    ARM: add basic support for on-demand backtrace of other CPUs · 96f0e003
    Russell King authored
    As we now have generic infrastructure to support backtracing of other
    CPUs in the system on lockups, we can start to implement this for ARM.
    Initially, we add an IPI based implementation, as the GIC code needs
    modification to support the generation of FIQ IPIs, and not all ARM
    platforms have the ability to raise a FIQ in the non-secure world.
    
    This provides us with a "best efforts" implementation in the absence
    of FIQs.
    Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
    96f0e003
smp.c 16.6 KB