[PATCH v2] modpost: Skip .llvm.call-graph-profile section check

From: Denis Nikitin
Date: Tue Aug 22 2023 - 13:49:07 EST


.llvm.call-graph-profile section is added by clang when the kernel is
built with profiles (e.g. -fprofile-sample-use= or -fprofile-use=).

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@xxxxxxxxxxxx>
Reviewed-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
---
scripts/mod/modpost.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index b29b29707f10..64bd13f7199c 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -761,6 +761,7 @@ static const char *const section_white_list[] =
".fmt_slot*", /* EZchip */
".gnu.lto*",
".discard.*",
+ ".llvm.call-graph-profile", /* call graph */
NULL
};

--
2.42.0.rc1.204.g551eb34607-goog