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    arc: unwind: warn only once if DW2_UNWIND is disabled · 9bd54517
    Alexey Brodkin 提交于
    If CONFIG_ARC_DW2_UNWIND is disabled every time arc_unwind_core()
    gets called following message gets printed in debug console:
    ----------------->8---------------
    CONFIG_ARC_DW2_UNWIND needs to be enabled
    ----------------->8---------------
    
    That message makes sense if user indeed wants to see a backtrace or
    get nice function call-graphs in perf but what if user disabled
    unwinder for the purpose? Why pollute his debug console?
    
    So instead we'll warn user about possibly missing feature once and
    let him decide if that was what he or she really wanted.
    Signed-off-by: NAlexey Brodkin <abrodkin@synopsys.com>
    Cc: stable@vger.kernel.org
    Signed-off-by: NVineet Gupta <vgupta@synopsys.com>
    9bd54517
stacktrace.c 6.9 KB