Re: [RFC PATCH 1/3] Unified trace buffer

[Steven Rostedt]

On Thu, 25 Sep 2008, Linus Torvalds wrote:
> 
> CFLAGS_REMOVE_lockdep.o = -pg
> CFLAGS_REMOVE_lockdep_proc.o = -pg
> CFLAGS_REMOVE_mutex-debug.o = -pg
> CFLAGS_REMOVE_rtmutex-debug.o = -pg
> CFLAGS_REMOVE_cgroup-debug.o = -pg
> CFLAGS_REMOVE_sched_clock.o = -pg
> CFLAGS_REMOVE_sched.o = -mno-spe -pg
> 

You'll also find in the lib Makefile:

ifdef CONFIG_FTRACE
ORIG_CFLAGS := $(KBUILD_CFLAGS)
KBUILD_CFLAGS = $(subst -pg,,$(ORIG_CFLAGS))
endif

Which removes all -pg flags from all in the lib directory. The reason is 
that a lot of archs (well, I know PPC for sure) use these functions on 
early boot up, where simply calling mcount will produce a page fault.

-- Steve

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/