linux-kernel - Re: drivers/gpu/drm/i915/i915.prelink.o: warning: objtool: __intel_wait_for_register_fw.cold()+0xce: relocation to !ENDBR: vlv_allow_gt

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Date:   Tue, 5 Apr 2022 21:20:32 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     Josh Poimboeuf <jpoimboe@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        kernel test robot <lkp@...el.com>, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, mbenes@...e.cz, x86@...nel.org,
        Arnaldo Carvalho de Melo <acme@...nel.org>
Subject: Re: drivers/gpu/drm/i915/i915.prelink.o: warning: objtool:
 __intel_wait_for_register_fw.cold()+0xce: relocation to !ENDBR:
 vlv_allow_gt_wake.cold+0x0

On Wed, 06 Apr 2022 02:46:22 +0200
Thomas Gleixner <tglx@...utronix.de> wrote:

> This covers the trace_printk() case which uses do_trace_printk(), but
> the same problem exists in trace_puts() and ftrace_vprintk()...., no?

Hmm, I'm not even sure why ftrace_vprintk() is there. It seems redundant.

Arnaldo,

Was there a reason for it. The commit that added it isn't very descriptive.

commit 9011262a37cb438f0fa9394b5e83840db8f9680a
Author: Arnaldo Carvalho de Melo <acme@...hat.com>
Date:   Fri Jan 23 12:06:23 2009 -0200

    ftrace: add ftrace_vprintk
    
    Impact: new helper function
    
    Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
    Signed-off-by: Ingo Molnar <mingo@...e.hu>


-- Steve