linux-kernel - Re: [PATCH v2 3/3] ftrace: Add sample with custom ops

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Date:   Tue, 7 Feb 2023 09:33:11 +0000
From:   Mark Rutland <mark.rutland@....com>
To:     Guenter Roeck <linux@...ck-us.net>
Cc:     linux-kernel@...r.kernel.org, mhiramat@...nel.org,
        revest@...omium.org, rostedt@...dmis.org,
        linux-trace-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/3] ftrace: Add sample with custom ops

On Mon, Feb 06, 2023 at 02:25:16PM -0800, Guenter Roeck wrote:
> On Tue, Jan 03, 2023 at 12:49:12PM +0000, Mark Rutland wrote:
> > +	pr_info("Attempted %u calls to %ps in %lluns (%lluns / call)\n",
> > +		nr_function_calls, tracee_relevant,
> > +		period, period / nr_function_calls);
>                         ^^^^^^^^^^^^^^^^^^^^^^^^^^
> 
> Building csky:allmodconfig ... failed
> --------------
> Error log:
> ERROR: modpost: "__udivdi3" [samples/ftrace/ftrace-ops.ko] undefined!

Arnd sent a fix for this a week ago:

  https://lore.kernel.org/lkml/20230130130246.247537-1-arnd@kernel.org/

I believe Steve has been travelling and hasn't had the chance to pick that up
yet.

Thanks,
Mark.