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Date:   Mon, 21 Mar 2022 12:54:19 -0400
From:   Steven Rostedt <rostedt@goodmis.org>
To:     Peter Zijlstra <peterz@infradead.org>
Cc:     Stephen Rothwell <sfr@canb.auug.org.au>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>,
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        Linux Next Mailing List <linux-next@vger.kernel.org>,
        mhiramat@kernel.org, ast@kernel.org, hjl.tools@gmail.com,
        rick.p.edgecombe@intel.com, rppt@kernel.org,
        linux-toolchains@vger.kernel.org, Andrew.Cooper3@citrix.com,
        ndesaulniers@google.com
Subject: Re: linux-next: build warnings after merge of the tip tree
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On Mon, 21 Mar 2022 17:50:50 +0100
Peter Zijlstra <peterz@infradead.org> wrote:

> > This also assumes that we need to trace everything that is marked. I
> > mentioned in another email, what do we do if we only trace funcA?  
> 
> Like I said later on; if we inhibit tail-calls to notrace, this goes
> away.

Please no. The number of "notrace" functions is increasing to the point
that it's starting to make function tracing useless in a lot of
circumstances. I've already lost my ability to see when user space goes
into the kernel (which I have to hack up custom coding to enable again).

-- Steve