Re: [PATCH v19 07/19] tracing: Add ftrace_fill_perf_regs() for perf event

Heiko Carstens
2024-11-10T17:05:53Z

On Mon, Nov 11, 2024 at 12:50:09AM +0900, Masami Hiramatsu (Google) wrote:
> From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
>
> Add ftrace_fill_perf_regs() which should be compatible with the
> perf_fetch_caller_regs(). In other words, the pt_regs returned from the
> ftrace_fill_perf_regs() must satisfy 'user_mode(regs) == false' and can be
> used for stack tracing.
>
> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
> Acked-by: Will Deacon <will@kernel.org>
> ---
> arch/arm64/include/asm/ftrace.h | 7 +++++++
> arch/powerpc/include/asm/ftrace.h | 7 +++++++
> arch/s390/include/asm/ftrace.h | 6 ++++++

Acked-by: Heiko Carstens <hca@linux.ibm.com> # s390