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authorMichael Forney <[email protected]>2019-06-17 22:33:06 -0700
committerIngo Molnar <[email protected]>2019-06-25 10:17:07 +0200
commitebf8d82bbb32720878a3867b28e655950ccee992 (patch)
treec9c99ac58cb352cff16a040e46cb165b8465e589
parent886532aee3cd42d95196601ed16d7c3d4679e9e5 (diff)
locking/atomics: Use sed(1) instead of non-standard head(1) option
POSIX says the -n option must be a positive decimal integer. Not all implementations of head(1) support negative numbers meaning offset from the end of the file. Instead, the sed expression '$d' has the same effect of removing the last line of the file. Signed-off-by: Michael Forney <[email protected]> Signed-off-by: Peter Zijlstra (Intel) <[email protected]> Acked-by: Will Deacon <[email protected]> Cc: Boqun Feng <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]>
-rwxr-xr-xscripts/atomic/check-atomics.sh2
1 files changed, 1 insertions, 1 deletions
diff --git a/scripts/atomic/check-atomics.sh b/scripts/atomic/check-atomics.sh
index cfa0c2f71c84..8378c63a1e09 100755
--- a/scripts/atomic/check-atomics.sh
+++ b/scripts/atomic/check-atomics.sh
@@ -22,7 +22,7 @@ while read header; do
OLDSUM="$(tail -n 1 ${LINUXDIR}/include/${header})"
OLDSUM="${OLDSUM#// }"
- NEWSUM="$(head -n -1 ${LINUXDIR}/include/${header} | sha1sum)"
+ NEWSUM="$(sed '$d' ${LINUXDIR}/include/${header} | sha1sum)"
NEWSUM="${NEWSUM%% *}"
if [ "${OLDSUM}" != "${NEWSUM}" ]; then