From: Andrew Morton <akpm@linux-foundation.org>
To: akpm@linux-foundation.org, jarkko@kernel.org, linux-mm@kvack.org,
mm-commits@vger.kernel.org, natechancellor@gmail.com,
ndesaulniers@google.com, ojeda@kernel.org, songliubraving@fb.com,
torvalds@linux-foundation.org, yu.chen.surf@gmail.com
Subject: [patch 2/8] compiler-clang: remove version check for BPF Tracing
Date: Sat, 21 Nov 2020 22:17:01 -0800 [thread overview]
Message-ID: <20201122061701.Hak73b_uU%akpm@linux-foundation.org> (raw)
In-Reply-To: <20201121221631.948ae4655e913a319d61700a@linux-foundation.org>
From: Nick Desaulniers <ndesaulniers@google.com>
Subject: compiler-clang: remove version check for BPF Tracing
bpftrace parses the kernel headers and uses Clang under the hood. Remove
the version check when __BPF_TRACING__ is defined (as bpftrace does) so
that this tool can continue to parse kernel headers, even with older clang
sources.
Link: https://lkml.kernel.org/r/20201104191052.390657-1-ndesaulniers@google.com
Fixes: commit 1f7a44f63e6c ("compiler-clang: add build check for clang 10.0.1")
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Reported-by: Chen Yu <yu.chen.surf@gmail.com>
Reported-by: Jarkko Sakkinen <jarkko@kernel.org>
Acked-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
include/linux/compiler-clang.h | 2 ++
1 file changed, 2 insertions(+)
--- a/include/linux/compiler-clang.h~compiler-clang-remove-version-check-for-bpf-tracing
+++ a/include/linux/compiler-clang.h
@@ -8,8 +8,10 @@
+ __clang_patchlevel__)
#if CLANG_VERSION < 100001
+#ifndef __BPF_TRACING__
# error Sorry, your version of Clang is too old - please use 10.0.1 or newer.
#endif
+#endif
/* Compiler specific definitions for Clang compiler */
_
next prev parent reply other threads:[~2020-11-22 6:17 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-22 6:16 incoming Andrew Morton
2020-11-22 6:16 ` [patch 1/8] mm/madvise: fix memory leak from process_madvise Andrew Morton
2020-11-22 6:17 ` Andrew Morton [this message]
2020-11-22 6:17 ` [patch 3/8] mm: fix phys_to_target_node() and memory_add_physaddr_to_nid() exports Andrew Morton
2020-11-22 6:17 ` [patch 4/8] mm: fix readahead_page_batch for retry entries Andrew Morton
2020-11-22 6:17 ` [patch 5/8] mm: memcg/slab: fix root memcg vmstats Andrew Morton
2020-11-22 6:17 ` [patch 6/8] mm/userfaultfd: do not access vma->vm_mm after calling handle_userfault() Andrew Morton
2020-11-22 6:17 ` [patch 7/8] libfs: fix error cast of negative value in simple_attr_write() Andrew Morton
2020-11-22 6:17 ` [patch 8/8] mm: fix madvise WILLNEED performance problem Andrew Morton
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