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authorMark Rutland <mark.rutland@arm.com>2018-09-04 11:48:29 +0100
committerIngo Molnar <mingo@kernel.org>2018-11-01 11:01:10 +0100
commit8d32588077bdc390420cfa6946f407033a20d7a8 (patch)
tree8826038ca127335c11514bb308179ad2d6e83d69 /scripts
parentaa525d063851a98e020b827fdd1d7776ae652301 (diff)
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locking/atomics: Check generated headers are up-to-date
Now that all the generated atomic headers are in place, it would be good to ensure that: a) the headers are up-to-date when scripting changes. b) developers don't directly modify the generated headers. To ensure both of these properties, let's add a Kbuild step to check that the generated headers are up-to-date. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: linux-arm-kernel@lists.infradead.org Cc: catalin.marinas@arm.com Cc: Will Deacon <will.deacon@arm.com> Cc: linuxdrivers@attotech.com Cc: dvyukov@google.com Cc: Boqun Feng <boqun.feng@gmail.com> Cc: arnd@arndb.de Cc: aryabinin@virtuozzo.com Cc: glider@google.com Link: http://lkml.kernel.org/r/20180904104830.2975-6-mark.rutland@arm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'scripts')
-rw-r--r--scripts/atomic/check-atomics.sh19
1 files changed, 19 insertions, 0 deletions
diff --git a/scripts/atomic/check-atomics.sh b/scripts/atomic/check-atomics.sh
new file mode 100644
index 000000000000..c30101cddf2d
--- /dev/null
+++ b/scripts/atomic/check-atomics.sh
@@ -0,0 +1,19 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+#
+# Check if atomic headers are up-to-date
+
+ATOMICDIR=$(dirname $0)
+ATOMICTBL=${ATOMICDIR}/atomics.tbl
+LINUXDIR=${ATOMICDIR}/../..
+
+cat <<EOF |
+gen-atomic-instrumented.sh asm-generic/atomic-instrumented.h
+gen-atomic-long.sh asm-generic/atomic-long.h
+gen-atomic-fallback.sh linux/atomic-fallback.h
+EOF
+while read script header; do
+ if ! (${ATOMICDIR}/${script} ${ATOMICTBL} | diff - ${LINUXDIR}/include/${header} > /dev/null); then
+ printf "warning: include/${header} is out-of-date.\n"
+ fi
+done