linux-kernel - Re: [PATCH v2 RESEND] function_graph: Support recording and printing the function return address

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Message-ID: <20241009131920.2afaf15f@gandalf.local.home>
Date: Wed, 9 Oct 2024 13:19:20 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: "Masami Hiramatsu (Google)" <mhiramat@...nel.org>
Cc: Donglin Peng <dolinux.peng@...il.com>, mark.rutland@....com,
 mathieu.desnoyers@...icios.com, linux-trace-kernel@...r.kernel.org,
 linux-kernel@...r.kernel.org, kernel test robot <lkp@...el.com>
Subject: Re: [PATCH v2 RESEND] function_graph: Support recording and
 printing the function return address

On Thu, 10 Oct 2024 01:32:22 +0900
Masami Hiramatsu (Google) <mhiramat@...nel.org> wrote:

> >From 8c2851452dd11a3a20ab22bd6bf8dd663c3c4b9c Mon Sep 17 00:00:00 2001  
> From: "Masami Hiramatsu (Google)" <mhiramat@...nel.org>
> Date: Thu, 10 Oct 2024 00:58:12 +0900
> Subject: [PATCH] tracing/fgraph: Simplify return address printing in function
>  graph tracer
> 
> Simplify return address printing in the function graph tracer by removing
> fgraph_extras. Since this feature is only used by the function graph
> tracer and we can check the flag directly in the function graph tracer,
> we can remove the fgraph_extras from the fgraph callback.
> 
> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@...nel.org>
> ---
>  include/linux/ftrace.h               | 16 ++++------
>  kernel/trace/fgraph.c                | 45 ++++++++++++++++++----------
>  kernel/trace/ftrace.c                |  3 +-
>  kernel/trace/trace.h                 |  3 +-
>  kernel/trace/trace_functions_graph.c | 14 ++++-----
>  kernel/trace/trace_irqsoff.c         |  3 +-
>  kernel/trace/trace_sched_wakeup.c    |  3 +-
>  kernel/trace/trace_selftest.c        |  8 ++---
>  8 files changed, 48 insertions(+), 47 deletions(-)
> 

Hi Masami,

Care to send this as a real patch?

-- Steve