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From: Nick Desaulniers <ndesaulniers@google.com>
To: Borislav Petkov <bp@alien8.de>
Cc: Peter Zijlstra <peterz@infradead.org>,
	"maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)"
	<x86@kernel.org>, Peter Oberparleiter <oberpar@linux.ibm.com>,
	LKML <linux-kernel@vger.kernel.org>,
	Johannes Berg <johannes.berg@intel.com>,
	Nathan Chancellor <nathan@kernel.org>,
	Kees Cook <keescook@chromium.org>, Marco Elver <elver@google.com>,
	Mark Rutland <mark.rutland@arm.com>
Subject: Re: [PATCH] gcov,x86: Mark GCOV broken for x86
Date: Mon, 14 Jun 2021 12:03:15 -0700	[thread overview]
Message-ID: <CAKwvOdkV8DLKJb7h_=6mUb_V=qdmBaCqNMU8scaBhpqF7yeeMQ@mail.gmail.com> (raw)
In-Reply-To: <YMeeBJKJhddzReGe@zn.tnic>

On Mon, Jun 14, 2021 at 11:21 AM Borislav Petkov <bp@alien8.de> wrote:
>
> On Mon, Jun 14, 2021 at 11:05:35AM -0700, Nick Desaulniers wrote:
> > __attribute__((no_instrument_function)) is already wired to not emit
> > calls to mcount()/fentry().  I think extending it to also apply to
> > coverage (-fprofile-arcs) and instrumentation based profiling
> > (-fprofile-generate) is reasonable.
>
> Is anyone going to ping the gcc folks so that they do it too or should
> we open a bug over there simply?

Yes, I will file a bug (or two) against GCC and then post the links on
the other thread (re: pgo) since that already has the toolchains
mailing list cc'ed.
-- 
Thanks,
~Nick Desaulniers

  reply	other threads:[~2021-06-14 19:04 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-14 10:17 Peter Zijlstra
2021-06-14 10:31 ` Marco Elver
2021-06-14 14:43 ` Peter Oberparleiter
2021-06-18 11:13   ` Peter Zijlstra
2021-06-21 13:53     ` Peter Oberparleiter
2021-06-14 16:05 ` Nick Desaulniers
2021-06-14 16:20   ` Peter Zijlstra
2021-06-14 18:05     ` Nick Desaulniers
2021-06-14 18:20       ` Borislav Petkov
2021-06-14 19:03         ` Nick Desaulniers [this message]
2021-06-14 19:28           ` Borislav Petkov
2021-06-14 18:31       ` Fangrui Song
2021-06-14 19:07         ` Peter Zijlstra

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