csky: ftrace call graph supported.

With csky-gcc -pg -mbacktrace, ftrace call graph supported. Signed-off-by: Guo Ren <ren_guo@c-sky.com>
2018-12-15 21:04:27 +08:00
parent 230c77a5e9
commit d7950be145
4 changed files with 152 additions and 21 deletions
--- a/arch/csky/include/asm/ftrace.h
+++ b/arch/csky/include/asm/ftrace.h
@@ -4,6 +4,10 @@
 #ifndef __ASM_CSKY_FTRACE_H
 #define __ASM_CSKY_FTRACE_H

-extern void _mcount(unsigned long from_pc);
+#define MCOUNT_INSN_SIZE 4
+
+#define HAVE_FUNCTION_GRAPH_FP_TEST
+
+#define HAVE_FUNCTION_GRAPH_RET_ADDR_PTR

 #endif /* __ASM_CSKY_FTRACE_H */