linux-kernel - Re: [POC][RFC][PATCH 1/2] jump_function: Addition of new feature "jump

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Message-ID: <20181005220026.49d43102@vmware.local.home>
Date:   Fri, 5 Oct 2018 22:00:26 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     linux-kernel@...r.kernel.org
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Ingo Molnar <mingo@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Matthew Helsley <mhelsley@...are.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        David Woodhouse <dwmw2@...radead.org>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Jason Baron <jbaron@...mai.com>, Jiri Kosina <jkosina@...e.cz>
Subject: Re: [POC][RFC][PATCH 1/2] jump_function: Addition of new feature
 "jump_function"

On Fri, 05 Oct 2018 21:51:11 -0400
Steven Rostedt <rostedt@...dmis.org> wrote:

> From: "Steven Rostedt (VMware)" <rostedt@...dmis.org>
> 
> Signed-off-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
> ---
>  include/asm-generic/vmlinux.lds.h |   4 +
>  include/linux/jump_function.h     |  93 ++++++++
>  kernel/Makefile                   |   2 +-
>  kernel/jump_function.c            | 368 ++++++++++++++++++++++++++++++
>  4 files changed, 466 insertions(+), 1 deletion(-)
>  create mode 100644 include/linux/jump_function.h
>  create mode 100644 kernel/jump_function.c
> 
> diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
> index 7b75ff6e2fce..0e205069ff36 100644
> --- a/include/asm-generic/vmlinux.lds.h
> +++ b/include/asm-generic/vmlinux.lds.h
> @@ -257,6 +257,10 @@
>  	__start___jump_table = .;					\
>  	KEEP(*(__jump_table))                                           \
>  	__stop___jump_table = .;					\
> +	. = ALIGN(8);                                                   \
> +	__start___dynfunc_table = .;					\
> +	KEEP(*(__dynfunc_table))					\
> +	__stop___dynfunc_table = .;					\
>  	. = ALIGN(8);							\
>  	__start___verbose = .;						\
>  	KEEP(*(__verbose))                                              \
>

BAH, this is leftover from my first attempt. It's not needed and can be
nuked.

-- Steve