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| author | Tony Lu | 2015-03-27 19:46:38 +0100 |
|---|---|---|
| committer | Chris Metcalf | 2015-04-17 20:01:38 +0200 |
| commit | 437d3e124d25daaa671bfecfd4015ecd2503a955 (patch) | |
| tree | ddc6e9491b9a14a09c6476d0543e9f4896dfd77d /arch/tile/include/asm/ftrace.h | |
| parent | tile: map data region shadow of kernel as R/W (diff) | |
| download | kernel-qcow2-linux-437d3e124d25daaa671bfecfd4015ecd2503a955.tar.gz kernel-qcow2-linux-437d3e124d25daaa671bfecfd4015ecd2503a955.tar.xz kernel-qcow2-linux-437d3e124d25daaa671bfecfd4015ecd2503a955.zip | |
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/asm/ftrace.h')
| -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 13a9bb81a8ab..738d239b792f 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) { |