diff mbox series

[bpf-next,2/5] kbuild: Add CONFIG_PAHOLE_VERSION

Message ID 20220201205624.652313-3-nathan@kernel.org (mailing list archive)
State Accepted
Commit 613fe169237785a4bb1d06397b52606b2967da53
Delegated to: BPF
Headers show
Series Allow CONFIG_DEBUG_INFO_DWARF5=y + CONFIG_DEBUG_INFO_BTF=y | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for bpf-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers warning 1 maintainers not CCed: masahiroy@kernel.org
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 30 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
bpf/vmtest-bpf-next success VM_Test
bpf/vmtest-bpf-next-PR success PR summary

Commit Message

Nathan Chancellor Feb. 1, 2022, 8:56 p.m. UTC
There are a few different places where pahole's version is turned into a
three digit form with the exact same command. Move this command into
scripts/pahole-version.sh to reduce the amount of duplication across the
tree.

Create CONFIG_PAHOLE_VERSION so the version code can be used in Kconfig
to enable and disable configuration options based on the pahole version,
which is already done in a couple of places.

Signed-off-by: Nathan Chancellor <nathan@kernel.org>
---
 MAINTAINERS               |  1 +
 init/Kconfig              |  4 ++++
 scripts/pahole-version.sh | 13 +++++++++++++
 3 files changed, 18 insertions(+)
 create mode 100755 scripts/pahole-version.sh
diff mbox series

Patch

diff --git a/MAINTAINERS b/MAINTAINERS
index 0d422452c8ff..d8a66d50f224 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3524,6 +3524,7 @@  F:	net/sched/cls_bpf.c
 F:	samples/bpf/
 F:	scripts/bpf_doc.py
 F:	scripts/pahole-flags.sh
+F:	scripts/pahole-version.sh
 F:	tools/bpf/
 F:	tools/lib/bpf/
 F:	tools/testing/selftests/bpf/
diff --git a/init/Kconfig b/init/Kconfig
index e9119bf54b1f..7328d4f25370 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -86,6 +86,10 @@  config CC_HAS_ASM_INLINE
 config CC_HAS_NO_PROFILE_FN_ATTR
 	def_bool $(success,echo '__attribute__((no_profile_instrument_function)) int x();' | $(CC) -x c - -c -o /dev/null -Werror)
 
+config PAHOLE_VERSION
+	int
+	default $(shell,$(srctree)/scripts/pahole-version.sh $(PAHOLE))
+
 config CONSTRUCTORS
 	bool
 
diff --git a/scripts/pahole-version.sh b/scripts/pahole-version.sh
new file mode 100755
index 000000000000..f8a32ab93ad1
--- /dev/null
+++ b/scripts/pahole-version.sh
@@ -0,0 +1,13 @@ 
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+#
+# Usage: $ ./pahole-version.sh pahole
+#
+# Prints pahole's version in a 3-digit form, such as 119 for v1.19.
+
+if [ ! -x "$(command -v "$@")" ]; then
+	echo 0
+	exit 1
+fi
+
+"$@" --version | sed -E 's/v([0-9]+)\.([0-9]+)/\1\2/'