| Index: src/flag-definitions.h
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| diff --git a/src/flag-definitions.h b/src/flag-definitions.h
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| index 2eabc0253e65aa00a9cb73fc492b28d0d70546dc..f51dd8004b7c50a4b1f850bd39ee18fd530a19ae 100644
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| --- a/src/flag-definitions.h
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| +++ b/src/flag-definitions.h
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| @@ -1059,6 +1059,8 @@ DEFINE_BOOL(perf_prof, false,
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|  DEFINE_NEG_IMPLICATION(perf_prof, compact_code_space)
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|  DEFINE_BOOL(perf_prof_debug_info, false,
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|              "Enable debug info for perf linux profiler (experimental).")
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| +DEFINE_BOOL(perf_prof_unwinding_info, false,
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| +            "Enable unwinding info for perf linux profiler (experimental).")
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|  DEFINE_STRING(gc_fake_mmap, "/tmp/__v8_gc__",
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|                "Specify the name of the file for fake gc mmap used in ll_prof")
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|  DEFINE_BOOL(log_internal_timer_events, false, "Time internal events.")
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| 
 |