diff options
| author | Donglin Peng <pengdonglin@sangfor.com.cn> | 2023-04-08 05:42:18 -0700 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2023-06-20 18:38:37 -0400 |
| commit | 3646970322464c21e69dcb9a2e37d461c5834bf5 (patch) | |
| tree | 956f462b4c4fe897eff8ea811a827448eb1deae4 /arch/arm64/kernel/asm-offsets.c | |
| parent | 21c094d3f8a6c88dedbd9831631a263d5c49775f (diff) | |
arm64: ftrace: Enable HAVE_FUNCTION_GRAPH_RETVAL
The previous patch ("function_graph: Support recording and printing
the return value of function") has laid the groundwork for the for
the funcgraph-retval, and this modification makes it available on
the ARM64 platform.
We introduce a new structure called fgraph_ret_regs for the ARM64
platform to hold return registers and the frame pointer. We then
fill its content in the return_to_handler and pass its address to
the function ftrace_return_to_handler to record the return value.
Link: https://lkml.kernel.org/r/c78366416ce93f704ae7000c4ee60eb4258c38f7.1680954589.git.pengdonglin@sangfor.com.cn
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Donglin Peng <pengdonglin@sangfor.com.cn>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'arch/arm64/kernel/asm-offsets.c')
| -rw-r--r-- | arch/arm64/kernel/asm-offsets.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm64/kernel/asm-offsets.c b/arch/arm64/kernel/asm-offsets.c index 0996094b0d22..757d01a68ffd 100644 --- a/arch/arm64/kernel/asm-offsets.c +++ b/arch/arm64/kernel/asm-offsets.c @@ -200,6 +200,19 @@ int main(void) #endif #ifdef CONFIG_FUNCTION_TRACER DEFINE(FTRACE_OPS_FUNC, offsetof(struct ftrace_ops, func)); +#endif + BLANK(); +#ifdef CONFIG_FUNCTION_GRAPH_TRACER + DEFINE(FGRET_REGS_X0, offsetof(struct fgraph_ret_regs, regs[0])); + DEFINE(FGRET_REGS_X1, offsetof(struct fgraph_ret_regs, regs[1])); + DEFINE(FGRET_REGS_X2, offsetof(struct fgraph_ret_regs, regs[2])); + DEFINE(FGRET_REGS_X3, offsetof(struct fgraph_ret_regs, regs[3])); + DEFINE(FGRET_REGS_X4, offsetof(struct fgraph_ret_regs, regs[4])); + DEFINE(FGRET_REGS_X5, offsetof(struct fgraph_ret_regs, regs[5])); + DEFINE(FGRET_REGS_X6, offsetof(struct fgraph_ret_regs, regs[6])); + DEFINE(FGRET_REGS_X7, offsetof(struct fgraph_ret_regs, regs[7])); + DEFINE(FGRET_REGS_FP, offsetof(struct fgraph_ret_regs, fp)); + DEFINE(FGRET_REGS_SIZE, sizeof(struct fgraph_ret_regs)); #ifdef CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS DEFINE(FTRACE_OPS_DIRECT_CALL, offsetof(struct ftrace_ops, direct_call)); #endif |