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eed542d696
Most archs with HAVE_ARCH_CALLER_ADDR have pretty much the same definitions of CALLER_ADDRx(n). Instead of duplicating the code for all the archs, define a ftrace_return_address0() and ftrace_return_address(n) that can be overwritten by the archs if they need to do something different. Instead of 7 macros in every arch, we now only have at most 2 (and actually only 1 as ftrace_return_address0() should be the same for all archs). The CALLER_ADDRx(n) will now be defined in linux/ftrace.h and use the ftrace_return_address*(n?) macros. This removes a lot of the duplicate code. Link: http://lkml.kernel.org/p/1400585464-30333-1-git-send-email-takahiro.akashi@linaro.org Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
48 lines
1.1 KiB
C
48 lines
1.1 KiB
C
#ifndef __ASM_SH_FTRACE_H
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#define __ASM_SH_FTRACE_H
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#ifdef CONFIG_FUNCTION_TRACER
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#define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */
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#define FTRACE_SYSCALL_MAX NR_syscalls
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#ifndef __ASSEMBLY__
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extern void mcount(void);
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#define MCOUNT_ADDR ((long)(mcount))
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#ifdef CONFIG_DYNAMIC_FTRACE
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#define CALL_ADDR ((long)(ftrace_call))
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#define STUB_ADDR ((long)(ftrace_stub))
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#define GRAPH_ADDR ((long)(ftrace_graph_call))
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#define CALLER_ADDR ((long)(ftrace_caller))
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#define MCOUNT_INSN_OFFSET ((STUB_ADDR - CALL_ADDR) - 4)
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#define GRAPH_INSN_OFFSET ((CALLER_ADDR - GRAPH_ADDR) - 4)
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struct dyn_arch_ftrace {
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/* No extra data needed on sh */
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};
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#endif /* CONFIG_DYNAMIC_FTRACE */
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static inline unsigned long ftrace_call_adjust(unsigned long addr)
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{
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/* 'addr' is the memory table address. */
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return addr;
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}
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#endif /* __ASSEMBLY__ */
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#endif /* CONFIG_FUNCTION_TRACER */
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#ifndef __ASSEMBLY__
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/* arch/sh/kernel/return_address.c */
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extern void *return_address(unsigned int);
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#define ftrace_return_address(n) return_address(n)
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#endif /* __ASSEMBLY__ */
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#endif /* __ASM_SH_FTRACE_H */
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