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authorDenis Nikitin <denik@chromium.org>2023-08-25 00:27:43 -0700
committerMasahiro Yamada <masahiroy@kernel.org>2023-09-01 15:58:17 +0900
commit1ef061a4e2648f23ab9bd996a7656675933f1c1f (patch)
treee08acd21b7639e2b26f77f814f3f8a525033c0e3
parent151aeca2179290fb9eb63bb3ee60c47fffd86c5e (diff)
modpost: Skip .llvm.call-graph-profile section check
.llvm.call-graph-profile section is added by clang when the kernel is built with profiles (e.g. -fprofile-sample-use= or -fprofile-use=). Note that .llvm.call-graph-profile intentionally uses REL relocations to decrease the object size, for more details see https://reviews.llvm.org/D104080. The section contains edge information derived from text sections, so .llvm.call-graph-profile itself doesn't need more analysis as the text sections have been analyzed. This change fixes the kernel build with clang and a sample profile which currently fails with: "FATAL: modpost: Please add code to calculate addend for this architecture" Signed-off-by: Denis Nikitin <denik@chromium.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Fangrui Song <maskray@google.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
-rw-r--r--scripts/mod/modpost.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 9761f9d0eec0..34a5386d444a 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -762,6 +762,7 @@ static const char *const section_white_list[] =
".fmt_slot*", /* EZchip */
".gnu.lto*",
".discard.*",
+ ".llvm.call-graph-profile", /* call graph */
NULL
};