arc: export symbol for save_stack_trace() in stacktrace.c
Need export its symbol just like other architectures done, or can not pass compiling with allmodconfig, the related error: MODPOST 2994 modules ERROR: "save_stack_trace" [kernel/backtracetest.ko] undefined! ERROR: "save_stack_trace" [drivers/md/persistent-data/dm-persistent-data.ko] undefined! Signed-off-by: Chen Gang <gang.chen@asianux.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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@ -246,4 +246,5 @@ void save_stack_trace(struct stack_trace *trace)
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/* Pass NULL for task so it unwinds the current call frame */
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arc_unwind_core(NULL, NULL, __collect_all, trace);
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}
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EXPORT_SYMBOL_GPL(save_stack_trace);
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#endif
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