linux/arch/sparc/include/asm/ftrace.h

#ifndef _ASM_SPARC64_FTRACE
#define _ASM_SPARC64_FTRACE

#ifdef CONFIG_MCOUNT
#define MCOUNT_ADDR		((long)(_mcount))
#define MCOUNT_INSN_SIZE	4 /* sizeof mcount call */

#ifndef __ASSEMBLY__
extern void _mcount(void);
#endif

#endif

#endif /* _ASM_SPARC64_FTRACE */
ftrace: store mcount address in rec->ip Record the address of the mcount call-site. Currently all archs except sparc64 record the address of the instruction following the mcount call-site. Some general cleanups are entailed. Storing mcount addresses in rec->ip enables looking them up in the kprobe hash table later on to check if they're kprobe'd. Signed-off-by: Abhishek Sagar <sagar.abhishek@gmail.com> Cc: davem@davemloft.net Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> 2008-06-21 23:47:27 +05:30			`#ifndef _ASM_SPARC64_FTRACE`
			`#define _ASM_SPARC64_FTRACE`

fix "ftrace: store mcount address in rec->ip" Alexander Beregalov reported this build failure: $ make CROSS_COMPILE=sparc64-unknown-linux-gnu- image modules && sudo make modules_install CHK include/linux/version.h CHK include/linux/utsrelease.h CALL scripts/checksyscalls.sh CHK include/linux/compile.h dnsdomainname: Unknown host CC arch/sparc64/kernel/sparc64_ksyms.o arch/sparc64/kernel/sparc64_ksyms.c:116: error: '_mcount' undeclared here (not in a function) cc1: warnings being treated as errors arch/sparc64/kernel/sparc64_ksyms.c:116: error: type defaults to 'int' in declaration of '_mcount' And bisected it back to: \| commit 395a59d0f8e86bb39cd700c3d185d30c670bb958 \| Author: Abhishek Sagar <sagar.abhishek@gmail.com> \| Date: Sat Jun 21 23:47:27 2008 +0530 \| \| ftrace: store mcount address in rec->ip the mcount prototype is only available under CONFIG_FTRACE, extend it to CONFIG_MCOUNT as well. Reported-and-bisected-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> 2008-07-01 17:35:06 +02:00			`#ifdef CONFIG_MCOUNT`
ftrace: store mcount address in rec->ip Record the address of the mcount call-site. Currently all archs except sparc64 record the address of the instruction following the mcount call-site. Some general cleanups are entailed. Storing mcount addresses in rec->ip enables looking them up in the kprobe hash table later on to check if they're kprobe'd. Signed-off-by: Abhishek Sagar <sagar.abhishek@gmail.com> Cc: davem@davemloft.net Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> 2008-06-21 23:47:27 +05:30			`#define MCOUNT_ADDR ((long)(_mcount))`
			`#define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */`

			`#ifndef __ASSEMBLY__`
			`extern void _mcount(void);`
			`#endif`

			`#endif`

			`#endif /* _ASM_SPARC64_FTRACE */`