Messages in this thread | | | Subject | Re: [PATCH v2] ftrace: On PowerPC we don't need frame pointers for CALLER_ADDRs | From | Steven Rostedt <> | Date | Tue, 03 Feb 2009 11:32:18 -0500 |
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On Tue, 2009-02-03 at 19:19 +0300, Anton Vorontsov wrote: > On Tue, Feb 03, 2009 at 05:06:45PM +0100, Ingo Molnar wrote:
> [1] Btw, why exactly do we need the -fno-omit-frame-pointer for > "FUNCTION_TRCER" tracer? Why just -pg isn't sufficient?.. >
The problem is this that is in the toplevel Makefile:
ifdef CONFIG_FRAME_POINTER KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls else KBUILD_CFLAGS += -fomit-frame-pointer endif
-pg is incompatible with -fomit-frame-pointer
-- Steve
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