linux-kernel - Re: [PATCH 5/8] x86,tracing: Mark debug_stack_{set

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Message-ID: <20200212101826.23d394eb@gandalf.local.home>
Date:   Wed, 12 Feb 2020 10:18:26 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        mingo@...nel.org, joel@...lfernandes.org,
        gregkh@...uxfoundation.org, gustavo@...eddedor.com,
        tglx@...utronix.de, paulmck@...nel.org, josh@...htriplett.org,
        mathieu.desnoyers@...icios.com, jiangshanlai@...il.com
Subject: Re: [PATCH 5/8] x86,tracing: Mark debug_stack_{set_zero,reset)()
 notrace

On Wed, 12 Feb 2020 16:04:40 +0100
Peter Zijlstra <peterz@...radead.org> wrote:

> > This entire file is notrace:
> > 
> >  arch/x86/kernel/cpu/Makefile:
> > 
> >    CFLAGS_REMOVE_common.o = -pg  
> 
> Urgh, I hate it that that annotation is so hard to find :/ Also, there
> seem to be various flavours of that Makefile magic around.
> 
>   CFLAGS_REMOVE_lockdep.o = $(CC_FLAGS_FTRACE)
> 
> is another variant I encountered.

Actually, that should be the only variant. That was added for various
archs, and should be used consistently throughout.

There's a clean up series for you ;-) (or whoever)

-- Steve