From: Jiri Olsa <jolsa@kernel.org>
Date: Wed, 21 Mar 2018 14:05:15 +0000 (+0100)
Subject: perf build: Fix check-headers.sh opts assignment
X-Git-Tag: v4.17-rc1~179^2~4^2~7
X-Git-Url: http://git.agner.ch/gitweb/?a=commitdiff_plain;h=b4c786e5aa69c5a75ac3932f81fdf8e8c120c03b;p=linux.git

perf build: Fix check-headers.sh opts assignment

Currently the "opts" variable is not zero-ed and we keep on adding to
it, ending up with:

  $ check-headers.sh 2>&1
  + opts=' "-B"'
  + opts=' "-B" "-B"'
  + opts=' "-B" "-B" "-B"'
  + opts=' "-B" "-B" "-B" "-B"'
  + opts=' "-B" "-B" "-B" "-B" "-B"'
  + opts=' "-B" "-B" "-B" "-B" "-B" "-B"'

Fix this by initializing it in the check() function, right before
starting the loop.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180321140515.2252-1-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---

diff --git a/tools/perf/check-headers.sh b/tools/perf/check-headers.sh
index bf206ffe5c45..9aff89bc7535 100755
--- a/tools/perf/check-headers.sh
+++ b/tools/perf/check-headers.sh
@@ -59,6 +59,7 @@ check () {
   file=$1
 
   shift
+  opts=
   while [ -n "$*" ]; do
     opts="$opts \"$1\""
     shift