linux_dsm_epyc7002/arch/sh/include/asm/ftrace.h
Minfei Huang c93bf928fe ftrace: Format MCOUNT_ADDR address as type unsigned long
Always we use type unsigned long to format the ip address, since the
value of ip address is never the negative.

This patch uses type unsigned long, instead of long, to format the ip
address. The code is more clearly to be viewed by using type unsigned
long, although it is correct by using either unsigned long or long.

Link: http://lkml.kernel.org/r/1436694744-16747-1-git-send-email-mhuang@redhat.com

Cc: Minfei Huang <mnfhuang@gmail.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Minfei Huang <mnfhuang@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2015-07-20 22:30:53 -04:00

48 lines
1.1 KiB
C

#ifndef __ASM_SH_FTRACE_H
#define __ASM_SH_FTRACE_H
#ifdef CONFIG_FUNCTION_TRACER
#define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */
#define FTRACE_SYSCALL_MAX NR_syscalls
#ifndef __ASSEMBLY__
extern void mcount(void);
#define MCOUNT_ADDR ((unsigned long)(mcount))
#ifdef CONFIG_DYNAMIC_FTRACE
#define CALL_ADDR ((long)(ftrace_call))
#define STUB_ADDR ((long)(ftrace_stub))
#define GRAPH_ADDR ((long)(ftrace_graph_call))
#define CALLER_ADDR ((long)(ftrace_caller))
#define MCOUNT_INSN_OFFSET ((STUB_ADDR - CALL_ADDR) - 4)
#define GRAPH_INSN_OFFSET ((CALLER_ADDR - GRAPH_ADDR) - 4)
struct dyn_arch_ftrace {
/* No extra data needed on sh */
};
#endif /* CONFIG_DYNAMIC_FTRACE */
static inline unsigned long ftrace_call_adjust(unsigned long addr)
{
/* 'addr' is the memory table address. */
return addr;
}
#endif /* __ASSEMBLY__ */
#endif /* CONFIG_FUNCTION_TRACER */
#ifndef __ASSEMBLY__
/* arch/sh/kernel/return_address.c */
extern void *return_address(unsigned int);
#define ftrace_return_address(n) return_address(n)
#endif /* __ASSEMBLY__ */
#endif /* __ASM_SH_FTRACE_H */