linux-kernel - Re: [PATCH RFC] ftrace: Clear hashes of saved init functions

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Message-ID: <CAJWu+orbq4R4aKHS_NJW7kqKZN4+yHJoceLxxaO91zV5LQpX4A@mail.gmail.com>
Date:   Mon, 9 Oct 2017 08:33:51 -0700
From:   Joel Fernandes <joelaf@...gle.com>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     LKML <linux-kernel@...r.kernel.org>, Jessica Yu <jeyu@...nel.org>
Subject: Re: [PATCH RFC] ftrace: Clear hashes of saved init functions

Hi Steve,

On Mon, Oct 9, 2017 at 8:09 AM, Steven Rostedt <rostedt@...dmis.org> wrote:
> On Sun,  8 Oct 2017 14:33:04 -0700
> Joel Fernandes <joelaf@...gle.com> wrote:
>
>>
>>  static void
>>  clear_mod_from_hash(struct ftrace_page *pg, struct ftrace_hash *hash)
>>  {
>> @@ -5771,12 +5807,24 @@ void ftrace_release_mod(struct module *mod)
>
> This is too late. This should be done by ftrace_free_mem().
>

Ok, I agree with you. Initially I started to do it this way but the
locking made it more complicated. I'll work on a patch that does it at
free_mem time and send it out today.

thanks,

- Joel