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authorAndrea Righi <andrea.righi@canonical.com>2023-07-04 08:21:36 +0300
committerMiguel Ojeda <ojeda@kernel.org>2023-08-10 23:28:04 +0300
commit41bdc6decda074afc4d8f8ba44c69b08d0e9aff6 (patch)
treec3c68b89f988058382d4d8917dd0ceebc1d9c83a /scripts
parent823d4737d4c226699f4378b71675822f5ebe78ba (diff)
downloadlinux-41bdc6decda074afc4d8f8ba44c69b08d0e9aff6.tar.xz
btf, scripts: rust: drop is_rust_module.sh
With commit c1177979af9c ("btf, scripts: Exclude Rust CUs with pahole") we are now able to use pahole directly to identify Rust compilation units (CUs) and exclude them from generating BTF debugging information (when DEBUG_INFO_BTF is enabled). And if pahole doesn't support the --lang-exclude flag, we can't enable both RUST and DEBUG_INFO_BTF at the same time. So, in any case, the script is_rust_module.sh is just redundant and we can drop it. NOTE: we may also be able to drop the "Rust loadable module" mark inside Rust modules, but it seems safer to keep it for now to make sure we are not breaking any external tool that may potentially rely on it. Signed-off-by: Andrea Righi <andrea.righi@canonical.com> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Tested-by: Eric Curtin <ecurtin@redhat.com> Reviewed-by: Eric Curtin <ecurtin@redhat.com> Reviewed-by: Neal Gompa <neal@gompa.dev> Reviewed-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Martin Rodriguez Reboredo <yakoyoku@gmail.com> Acked-by: Daniel Xu <dxu@dxuuu.xyz> Link: https://lore.kernel.org/r/20230704052136.155445-1-andrea.righi@canonical.com [ Picked the `Reviewed-by`s from the old patch too. ] Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Diffstat (limited to 'scripts')
-rw-r--r--scripts/Makefile.modfinal2
-rwxr-xr-xscripts/is_rust_module.sh16
2 files changed, 0 insertions, 18 deletions
diff --git a/scripts/Makefile.modfinal b/scripts/Makefile.modfinal
index fc19f67039bd..b3a6aa8fbe8c 100644
--- a/scripts/Makefile.modfinal
+++ b/scripts/Makefile.modfinal
@@ -41,8 +41,6 @@ quiet_cmd_btf_ko = BTF [M] $@
cmd_btf_ko = \
if [ ! -f vmlinux ]; then \
printf "Skipping BTF generation for %s due to unavailability of vmlinux\n" $@ 1>&2; \
- elif [ -n "$(CONFIG_RUST)" ] && $(srctree)/scripts/is_rust_module.sh $@; then \
- printf "Skipping BTF generation for %s because it's a Rust module\n" $@ 1>&2; \
else \
LLVM_OBJCOPY="$(OBJCOPY)" $(PAHOLE) -J $(PAHOLE_FLAGS) --btf_base vmlinux $@; \
$(RESOLVE_BTFIDS) -b vmlinux $@; \
diff --git a/scripts/is_rust_module.sh b/scripts/is_rust_module.sh
deleted file mode 100755
index 464761a7cf7f..000000000000
--- a/scripts/is_rust_module.sh
+++ /dev/null
@@ -1,16 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-#
-# is_rust_module.sh module.ko
-#
-# Returns `0` if `module.ko` is a Rust module, `1` otherwise.
-
-set -e
-
-# Using the `16_` prefix ensures other symbols with the same substring
-# are not picked up (even if it would be unlikely). The last part is
-# used just in case LLVM decides to use the `.` suffix.
-#
-# In the future, checking for the `.comment` section may be another
-# option, see https://github.com/rust-lang/rust/pull/97550.
-${NM} "$*" | grep -qE '^[0-9a-fA-F]+ [Rr] _R[^[:space:]]+16___IS_RUST_MODULE[^[:space:]]*$'