From:   Diederik de Haas <didi.debian@cknow.org>
To:     Carsten Haitzler <carsten.haitzler@arm.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@redhat.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>
Cc:     Mark Rutland <mark.rutland@arm.com>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Jiri Olsa <jolsa@kernel.org>,
        Namhyung Kim <namhyung@kernel.org>,
        linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org,
        Diederik de Haas <didi.debian@cknow.org>
Subject: [PATCH 1/2] perf test: Replace 'grep | wc -l' with 'grep -c'
Date:   Wed,  1 Feb 2023 22:49:44 +0100
Message-Id: <20230201214945.127474-2-didi.debian@cknow.org>
In-Reply-To: <20230201214945.127474-1-didi.debian@cknow.org>
References: <20230201214945.127474-1-didi.debian@cknow.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

To count the number of results from grep, use the '-c' parameter
instead of piping it to 'wc'.
See also https://www.shellcheck.net/wiki/SC2126

Signed-off-by: Diederik de Haas <didi.debian@cknow.org>
---
 tools/perf/tests/shell/lib/coresight.sh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/perf/tests/shell/lib/coresight.sh b/tools/perf/tests/shell/lib/coresight.sh
index 45a1477256b6..7e27e5c5bc9c 100644
--- a/tools/perf/tests/shell/lib/coresight.sh
+++ b/tools/perf/tests/shell/lib/coresight.sh
@@ -58,9 +58,9 @@ perf_dump_aux_verify() {
 	# compiler may produce different code depending on the compiler and
 	# optimization options, so this is rough just to see if we're
 	# either missing almost all the data or all of it
-	ATOM_FX_NUM=`grep I_ATOM_F "$DUMP" | wc -l`
-	ASYNC_NUM=`grep I_ASYNC "$DUMP" | wc -l`
-	TRACE_INFO_NUM=`grep I_TRACE_INFO "$DUMP" | wc -l`
+	ATOM_FX_NUM=`grep -c I_ATOM_F "$DUMP"`
+	ASYNC_NUM=`grep -c I_ASYNC "$DUMP"`
+	TRACE_INFO_NUM=`grep -c I_TRACE_INFO "$DUMP"`
 	rm -f "$DUMP"
 
 	# Arguments provide minimums for a pass
-- 
2.39.1