From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: Naveen N Rao <naveen@kernel.org>
Cc: linuxppc-dev@lists.ozlabs.org, Joel Stanley <joel@jms.id.au>,
Nicholas Piggin <npiggin@gmail.com>
Subject: Re: [PATCH v2] powerpc: Fail build if using recordmcount with binutils v2.37
Date: Mon, 03 Jul 2023 15:26:59 +1000 [thread overview]
Message-ID: <168836201907.50010.17773245679736568331.b4-ty@ellerman.id.au> (raw)
In-Reply-To: <20230530061436.56925-1-naveen@kernel.org>
On Tue, 30 May 2023 11:44:36 +0530, Naveen N Rao wrote:
> binutils v2.37 drops unused section symbols, which prevents recordmcount
> from capturing mcount locations in sections that have no non-weak
> symbols. This results in a build failure with a message such as:
> Cannot find symbol for section 12: .text.perf_callchain_kernel.
> kernel/events/callchain.o: failed
>
> The change to binutils was reverted for v2.38, so this behavior is
> specific to binutils v2.37:
> https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=c09c8b42021180eee9495bd50d8b35e683d3901b
>
> [...]
Applied to powerpc/next.
[1/1] powerpc: Fail build if using recordmcount with binutils v2.37
https://git.kernel.org/powerpc/c/25ea739ea1d4d3de41acc4f4eb2d1a97eee0eb75
cheers
prev parent reply other threads:[~2023-07-03 5:41 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-30 6:14 [PATCH v2] powerpc: Fail build if using recordmcount with binutils v2.37 Naveen N Rao
2023-07-03 5:26 ` Michael Ellerman [this message]
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