diff options
Diffstat (limited to 'arch/x86/kernel/mcount_64.S')
| -rw-r--r-- | arch/x86/kernel/mcount_64.S | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/kernel/mcount_64.S b/arch/x86/kernel/mcount_64.S index c050a0153168..6b4e3c3b3d74 100644 --- a/arch/x86/kernel/mcount_64.S +++ b/arch/x86/kernel/mcount_64.S @@ -182,6 +182,10 @@ END(function_hook) ENTRY(ftrace_graph_caller) MCOUNT_SAVE_FRAME + /* Check if tracing was disabled (quick check) */ + cmpl $0, function_trace_stop + jne fgraph_skip + #ifdef CC_USING_FENTRY leaq SS+16(%rsp), %rdi movq $0, %rdx /* No framepointers needed */ @@ -194,6 +198,7 @@ ENTRY(ftrace_graph_caller) call prepare_ftrace_return +fgraph_skip: MCOUNT_RESTORE_FRAME retq |