Commit 6fbff14a authored by Qing Zhang's avatar Qing Zhang Committed by Huacai Chen
Browse files

LoongArch: ftrace: Abstract DYNAMIC_FTRACE_WITH_ARGS accesses 



Add new ftrace_regs_{get,set}_*() helpers which can be used to manipulate
ftrace_regs. When CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS=y, these can always
be used on any ftrace_regs, and when CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS
=n these can be used when regs are available.

Signed-off-by: default avatarQing Zhang <zhangqing@loongson.cn>
Signed-off-by: default avatarHuacai Chen <chenhuacai@loongson.cn>
parent 8b5ee2c6

arch/loongarch/include/asm/ftrace.h

+25 −0
Original line number Diff line number Diff line
@@ -54,6 +54,31 @@ static __always_inline struct pt_regs *arch_ftrace_get_regs(struct ftrace_regs * 
	return &fregs->regs;

}



static __always_inline unsigned long

ftrace_regs_get_instruction_pointer(struct ftrace_regs *fregs)

{

	return instruction_pointer(&fregs->regs);

}



static __always_inline void

ftrace_regs_set_instruction_pointer(struct ftrace_regs *fregs, unsigned long ip)

{

	regs_set_return_value(&fregs->regs, ip);

}



#define ftrace_regs_get_argument(fregs, n) \

	regs_get_kernel_argument(&(fregs)->regs, n)

#define ftrace_regs_get_stack_pointer(fregs) \

	kernel_stack_pointer(&(fregs)->regs)

#define ftrace_regs_return_value(fregs) \

	regs_return_value(&(fregs)->regs)

#define ftrace_regs_set_return_value(fregs, ret) \

	regs_set_return_value(&(fregs)->regs, ret)

#define ftrace_override_function_with_return(fregs) \

	override_function_with_return(&(fregs)->regs)

#define ftrace_regs_query_register_offset(name) \

	regs_query_register_offset(name)



#define ftrace_graph_func ftrace_graph_func

void ftrace_graph_func(unsigned long ip, unsigned long parent_ip,

		       struct ftrace_ops *op, struct ftrace_regs *fregs);