diff options
| author | Tony Lu <zlu@ezchip.com> | 2015-03-27 18:46:38 (GMT) |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@ezchip.com> | 2015-04-17 18:01:38 (GMT) |
| commit | 437d3e124d25daaa671bfecfd4015ecd2503a955 (patch) | |
| tree | ddc6e9491b9a14a09c6476d0543e9f4896dfd77d /arch/tile/include | |
| parent | a84f24230c137a4e0ab14185e9175798ca1b0376 (diff) | |
| download | linux-437d3e124d25daaa671bfecfd4015ecd2503a955.tar.xz | |
tile: ftrace: fix function_graph tracer issues
- Add support for ARCH_SUPPORTS_FTRACE_OPS
- Replace the instruction in ftrace_call with the bundle {move r10, lr;
jal ftrace_stub}, so that the lr contains the right value after returning
from ftrace_stub. An alternative fix might be to leave the instruction
in ftrace_call alone when it is being updated with ftrace_stub.
Signed-off-by: Tony Lu <zlu@ezchip.com>
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
Diffstat (limited to 'arch/tile/include')
| -rw-r--r-- | arch/tile/include/asm/ftrace.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/tile/include/asm/ftrace.h b/arch/tile/include/asm/ftrace.h index 13a9bb8..738d239 100644 --- a/arch/tile/include/asm/ftrace.h +++ b/arch/tile/include/asm/ftrace.h @@ -23,6 +23,8 @@ #ifndef __ASSEMBLY__ extern void __mcount(void); +#define ARCH_SUPPORTS_FTRACE_OPS 1 + #ifdef CONFIG_DYNAMIC_FTRACE static inline unsigned long ftrace_call_adjust(unsigned long addr) { |