From: Nick Desaulniers <ndesaulniers@google.com>
To: Peter Oberparleiter <oberpar@linux.ibm.com>,
Andrew Morton <akpm@linux-foundation.org>
Cc: Nathan Chancellor <nathan@kernel.org>,
linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com,
Fangrui Song <maskray@google.com>,
Prasad Sodagudi <psodagud@quicinc.com>,
Nick Desaulniers <ndesaulniers@google.com>
Subject: [PATCH v2 0/2] gcov fixes for clang-11
Date: Fri, 12 Mar 2021 14:41:30 -0800 [thread overview]
Message-ID: <20210312224132.3413602-1-ndesaulniers@google.com> (raw)
In-Reply-To: <20210312220518.rz6cjh33bkwaumzz@archlinux-ax161>
LLVM changed the expected function signatures for llvm_gcda_start_file()
and llvm_gcda_emit_function() in the clang-11 release. Users of clang-11
or newer may have noticed their kernels failing to boot due to a panic
when enabling CONFIG_GCOV_KERNEL=y +CONFIG_GCOV_PROFILE_ALL=y. Fix up
the function signatures so calling these functions doesn't panic the
kernel.
The first patch should allow us to backport it to stable; the second
drops support for older toolchains.
Link: https://reviews.llvm.org/rGcdd683b516d147925212724b09ec6fb792a40041
Link: https://reviews.llvm.org/rG13a633b438b6500ecad9e4f936ebadf3411d0f44
Nick Desaulniers (2):
gcov: fix clang-11+ support
gcov: clang: drop support for clang-10 and older
kernel/gcov/Kconfig | 1 +
kernel/gcov/clang.c | 32 ++++++++------------------------
2 files changed, 9 insertions(+), 24 deletions(-)
base-commit: f78d76e72a4671ea52d12752d92077788b4f5d50
--
2.31.0.rc2.261.g7f71774620-goog
next prev parent reply other threads:[~2021-03-12 22:42 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-12 19:21 [PATCH] gcov: fix clang-11+ support Nick Desaulniers
2021-03-12 19:58 ` Nathan Chancellor
2021-03-12 20:14 ` Nick Desaulniers
2021-03-12 20:46 ` Nick Desaulniers
2021-03-12 20:51 ` Nathan Chancellor
2021-03-12 21:57 ` Nick Desaulniers
2021-03-12 22:05 ` Nathan Chancellor
2021-03-12 22:41 ` Nick Desaulniers [this message]
2021-03-12 22:41 ` [PATCH v2 1/2] " Nick Desaulniers
2021-03-15 13:51 ` Peter Oberparleiter
2021-03-15 18:13 ` Nathan Chancellor
2021-03-12 22:41 ` [PATCH v2 2/2] gcov: clang: drop support for clang-10 and older Nick Desaulniers
2021-03-15 13:54 ` Peter Oberparleiter
2021-03-15 18:14 ` Nathan Chancellor
2021-03-12 20:25 ` [PATCH] gcov: fix clang-11+ support Fangrui Song
2021-03-12 22:05 ` Nick Desaulniers
2021-03-12 22:24 ` Fangrui Song
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