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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-10-11 10:55:04 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-10-11 10:55:04 +0100 |
| commit | a0f0dd57f4a85310d9936f1770a0424b49fef876 (patch) | |
| tree | 2f85b8b67dda13d19b02ca39e0fbef921cb1cf8b /kernel/trace/trace_functions_graph.c | |
| parent | 2a552d5e63d7fa602c9a9a0717008737f55625a6 (diff) | |
| parent | 846a136881b8f73c1f74250bf6acfaa309cab1f2 (diff) | |
Merge branch 'fixes' into for-linus
Conflicts:
arch/arm/kernel/smp.c
Diffstat (limited to 'kernel/trace/trace_functions_graph.c')
| -rw-r--r-- | kernel/trace/trace_functions_graph.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c index ce27c8ba8d3..99b4378393d 100644 --- a/kernel/trace/trace_functions_graph.c +++ b/kernel/trace/trace_functions_graph.c @@ -143,7 +143,7 @@ ftrace_pop_return_trace(struct ftrace_graph_ret *trace, unsigned long *ret, return; } -#ifdef CONFIG_HAVE_FUNCTION_GRAPH_FP_TEST +#if defined(CONFIG_HAVE_FUNCTION_GRAPH_FP_TEST) && !defined(CC_USING_FENTRY) /* * The arch may choose to record the frame pointer used * and check it here to make sure that it is what we expect it @@ -154,6 +154,9 @@ ftrace_pop_return_trace(struct ftrace_graph_ret *trace, unsigned long *ret, * * Currently, x86_32 with optimize for size (-Os) makes the latest * gcc do the above. + * + * Note, -mfentry does not use frame pointers, and this test + * is not needed if CC_USING_FENTRY is set. */ if (unlikely(current->ret_stack[index].fp != frame_pointer)) { ftrace_graph_stop(); |