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[2/8] compiler-clang: remove version check for BPF Tracing

Message ID 20201122061701.Hak73b_uU%akpm@linux-foundation.org (mailing list archive)
State New, archived
Headers show
Series [1/8] mm/madvise: fix memory leak from process_madvise | expand

Commit Message

Andrew Morton Nov. 22, 2020, 6:17 a.m. UTC 
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(+)
diff mbox series

Patch

--- 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 */