From d75f054a2cf0614ff63d534ff21ca8eaab41e713 Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Mon, 9 Feb 2009 00:43:36 +0100 Subject: parisc: add ftrace (function and graph tracer) functionality This patch adds the ftrace debugging functionality to the parisc kernel. It will currently only work with 64bit kernels, because the gcc options -pg and -ffunction-sections can't be enabled at the same time and -ffunction-sections is still needed to be able to link 32bit kernels. Signed-off-by: Helge Deller Signed-off-by: Kyle McMartin --- arch/parisc/include/asm/ftrace.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 arch/parisc/include/asm/ftrace.h (limited to 'arch/parisc/include') diff --git a/arch/parisc/include/asm/ftrace.h b/arch/parisc/include/asm/ftrace.h new file mode 100644 index 00000000000..2fa05dd6aee --- /dev/null +++ b/arch/parisc/include/asm/ftrace.h @@ -0,0 +1,25 @@ +#ifndef _ASM_PARISC_FTRACE_H +#define _ASM_PARISC_FTRACE_H + +#ifndef __ASSEMBLY__ +extern void mcount(void); + +/* + * Stack of return addresses for functions of a thread. + * Used in struct thread_info + */ +struct ftrace_ret_stack { + unsigned long ret; + unsigned long func; + unsigned long long calltime; +}; + +/* + * Primary handler of a function return. + * It relays on ftrace_return_to_handler. + * Defined in entry.S + */ +extern void return_to_handler(void); +#endif /* __ASSEMBLY__ */ + +#endif /* _ASM_PARISC_FTRACE_H */ -- cgit v1.2.3