Re: Re: [PATCH v3 0/8] ftrace with regs + live patching for ppc64 LE (ABI v2)

[kbuild test robot]

Hi Torsten,

[auto build test ERROR on powerpc/next -- if it's inappropriate base, please suggest rules for selecting the more suitable base]

url:    https://github.com/0day-ci/linux/commits/Torsten-Duwe/Re-PATCH-v3-0-8-ftrace-with-regs-live-patching-for-ppc64-LE-ABI-v2/20151027-020058
config: powerpc-ppc6xx_defconfig (attached as .config)
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=powerpc 

All errors (new ones prefixed by >>):

   kernel/built-in.o: In function `ftrace_get_addr_curr':
>> kernel/trace/ftrace.c:2286: undefined reference to `ftrace_regs_caller'
>> kernel/trace/ftrace.c:2286: undefined reference to `ftrace_regs_caller'
   kernel/built-in.o: In function `ftrace_get_addr_new':
   kernel/trace/ftrace.c:2254: undefined reference to `ftrace_regs_caller'
   kernel/trace/ftrace.c:2254: undefined reference to `ftrace_regs_caller'
   kernel/built-in.o: In function `__ftrace_replace_code':
>> kernel/trace/ftrace.c:2316: undefined reference to `ftrace_modify_call'
   kernel/built-in.o: In function `ftrace_get_addr_curr':
>> kernel/trace/ftrace.c:2286: undefined reference to `ftrace_regs_caller'
>> kernel/trace/ftrace.c:2286: undefined reference to `ftrace_regs_caller'
   kernel/built-in.o: In function `ftrace_get_addr_new':
   kernel/trace/ftrace.c:2254: undefined reference to `ftrace_regs_caller'
   kernel/trace/ftrace.c:2254: undefined reference to `ftrace_regs_caller'
   kernel/built-in.o: In function `ftrace_get_addr_curr':
>> kernel/trace/ftrace.c:2286: undefined reference to `ftrace_regs_caller'
   kernel/built-in.o:kernel/trace/ftrace.c:2286: more undefined references to `ftrace_regs_caller' follow

vim +2286 kernel/trace/ftrace.c

79922b80 Steven Rostedt (Red Hat  2014-05-06  2280) 			return (unsigned long)FTRACE_ADDR;
79922b80 Steven Rostedt (Red Hat  2014-05-06  2281) 		}
79922b80 Steven Rostedt (Red Hat  2014-05-06  2282) 		return ops->trampoline;
79922b80 Steven Rostedt (Red Hat  2014-05-06  2283) 	}
79922b80 Steven Rostedt (Red Hat  2014-05-06  2284) 
7413af1f Steven Rostedt (Red Hat  2014-05-06  2285) 	if (rec->flags & FTRACE_FL_REGS_EN)
7413af1f Steven Rostedt (Red Hat  2014-05-06 @2286) 		return (unsigned long)FTRACE_REGS_ADDR;
7413af1f Steven Rostedt (Red Hat  2014-05-06  2287) 	else
7413af1f Steven Rostedt (Red Hat  2014-05-06  2288) 		return (unsigned long)FTRACE_ADDR;
7413af1f Steven Rostedt (Red Hat  2014-05-06  2289) }
7413af1f Steven Rostedt (Red Hat  2014-05-06  2290) 
c88fd863 Steven Rostedt           2011-08-16  2291  static int
c88fd863 Steven Rostedt           2011-08-16  2292  __ftrace_replace_code(struct dyn_ftrace *rec, int enable)
c88fd863 Steven Rostedt           2011-08-16  2293  {
08f6fba5 Steven Rostedt           2012-04-30  2294  	unsigned long ftrace_old_addr;
c88fd863 Steven Rostedt           2011-08-16  2295  	unsigned long ftrace_addr;
c88fd863 Steven Rostedt           2011-08-16  2296  	int ret;
c88fd863 Steven Rostedt           2011-08-16  2297  
7c0868e0 Steven Rostedt (Red Hat  2014-05-08  2298) 	ftrace_addr = ftrace_get_addr_new(rec);
c88fd863 Steven Rostedt           2011-08-16  2299  
7c0868e0 Steven Rostedt (Red Hat  2014-05-08  2300) 	/* This needs to be done before we call ftrace_update_record */
7c0868e0 Steven Rostedt (Red Hat  2014-05-08  2301) 	ftrace_old_addr = ftrace_get_addr_curr(rec);
7c0868e0 Steven Rostedt (Red Hat  2014-05-08  2302) 
7c0868e0 Steven Rostedt (Red Hat  2014-05-08  2303) 	ret = ftrace_update_record(rec, enable);
08f6fba5 Steven Rostedt           2012-04-30  2304  
c88fd863 Steven Rostedt           2011-08-16  2305  	switch (ret) {
c88fd863 Steven Rostedt           2011-08-16  2306  	case FTRACE_UPDATE_IGNORE:
c88fd863 Steven Rostedt           2011-08-16  2307  		return 0;
c88fd863 Steven Rostedt           2011-08-16  2308  
c88fd863 Steven Rostedt           2011-08-16  2309  	case FTRACE_UPDATE_MAKE_CALL:
c88fd863 Steven Rostedt           2011-08-16  2310  		return ftrace_make_call(rec, ftrace_addr);
c88fd863 Steven Rostedt           2011-08-16  2311  
c88fd863 Steven Rostedt           2011-08-16  2312  	case FTRACE_UPDATE_MAKE_NOP:
39b5552c Steven Rostedt (Red Hat  2014-08-17  2313) 		return ftrace_make_nop(NULL, rec, ftrace_old_addr);
08f6fba5 Steven Rostedt           2012-04-30  2314  
08f6fba5 Steven Rostedt           2012-04-30  2315  	case FTRACE_UPDATE_MODIFY_CALL:
08f6fba5 Steven Rostedt           2012-04-30 @2316  		return ftrace_modify_call(rec, ftrace_old_addr, ftrace_addr);
5072c59f Steven Rostedt           2008-05-12  2317  	}
5072c59f Steven Rostedt           2008-05-12  2318  
c88fd863 Steven Rostedt           2011-08-16  2319  	return -1; /* unknow ftrace bug */

:::::: The code at line 2286 was first introduced by commit
:::::: 7413af1fb70e7efa6dbc7f27663e7a5126b3aa33 ftrace: Make get_ftrace_addr() and get_ftrace_addr_old() global

:::::: TO: Steven Rostedt (Red Hat) <rostedt@xxxxxxxxxxx>
:::::: CC: Steven Rostedt <rostedt@xxxxxxxxxxx>

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