[Bug 574158] [NEW] Turn on CONFIG_FUNCTION_TRACER option will encounter a linking error

[AceLan Kao]

Public bug reported:

I turn on the following options and encountered a linking error
CONFIG_FUNCTION_TRACER=y
CONFIG_FUNCTION_PROFILER=y
CONFIG_FTRACE_SELFTEST=y
CONFIG_FTRACE_STARTUP_TEST=y

The erroe message is as below
init/built-in.o: In function `do_one_initcall':
calibrate.c:(.text+0x14): undefined reference to `__gnu_mcount_nc'
init/built-in.o: In function `run_init_process':
calibrate.c:(.text+0x1e0): undefined reference to `__gnu_mcount_nc'
init/built-in.o: In function `init_post':
calibrate.c:(.text+0x20c): undefined reference to `__gnu_mcount_nc'
init/built-in.o: In function `name_to_dev_t':
calibrate.c:(.text+0x330): undefined reference to `__gnu_mcount_nc'
init/built-in.o: In function `rest_init':
calibrate.c:(.ref.text+0x10): undefined reference to `__gnu_mcount_nc'
init/built-in.o:calibrate.c:(.cpuinit.text+0x10): more undefined references to `__gnu_mcount_nc' follow
make[3]: *** [.tmp_vmlinux1] Error 1
make[2]: *** [sub-make] Error 2

** Affects: linux-fsl-imx51 (Ubuntu)
     Importance: Undecided
     Assignee: AceLan Kao (acelankao)
         Status: In Progress

** Changed in: linux-fsl-imx51 (Ubuntu)
       Status: New => In Progress

** Changed in: linux-fsl-imx51 (Ubuntu)
     Assignee: (unassigned) => AceLan Kao (acelankao)

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Turn on CONFIG_FUNCTION_TRACER option will encounter a linking error
https://bugs.launchpad.net/bugs/574158
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