diff options
Diffstat (limited to 'arch/microblaze/kernel/mcount.S')
| -rw-r--r-- | arch/microblaze/kernel/mcount.S | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/microblaze/kernel/mcount.S b/arch/microblaze/kernel/mcount.S index 97eef3eea944..30aaf8fb55b2 100644 --- a/arch/microblaze/kernel/mcount.S +++ b/arch/microblaze/kernel/mcount.S @@ -83,6 +83,12 @@ ENTRY(ftrace_stub) nop; ENTRY(_mcount) +#ifdef CONFIG_DYNAMIC_FTRACE +ENTRY(ftrace_caller) + /* MS: It is just barrier which is removed from C code */ + rtsd r15, 8 + nop +#endif /* CONFIG_DYNAMIC_FTRACE */ SAVE_REGS swi r15, r1, 0; /* MS: HAVE_FUNCTION_TRACE_MCOUNT_TEST begin of checking */ @@ -90,12 +96,19 @@ ENTRY(_mcount) bneid r5, end; nop; /* MS: HAVE_FUNCTION_TRACE_MCOUNT_TEST end of checking */ +#ifndef CONFIG_DYNAMIC_FTRACE /* MS: test function trace if is taken or not */ lwi r20, r0, ftrace_trace_function; addik r6, r0, ftrace_stub; cmpu r5, r20, r6; /* ftrace_trace_function != ftrace_stub */ beqid r5, end; /* MS: not taken -> jump over */ nop; +#else /* CONFIG_DYNAMIC_FTRACE */ +NOALIGN_ENTRY(ftrace_call) +/* instruction for setup imm FUNC_part1, addik r20, r0, FUNC_part2 */ + nop + nop +#endif /* CONFIG_DYNAMIC_FTRACE */ /* static normal trace */ lwi r6, r1, 120; /* MS: load parent addr */ addik r5, r15, 0; /* MS: load current function addr */ |