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Subject: [PATCH v10 12/12] perf tests: implement Zstd comp/decomp integration
 test
From:   Alexey Budankov <alexey.budankov@linux.intel.com>
To:     Arnaldo Carvalho de Melo <acme@kernel.org>
Cc:     Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@redhat.com>,
        Andi Kleen <ak@linux.intel.com>,
        linux-kernel <linux-kernel@vger.kernel.org>
References: <12cce142-6238-475b-b9aa-236531c12c2b@linux.intel.com>
Organization: Intel Corp.
Message-ID: <dc007ae4-104a-2b7c-316e-275929025f0d@linux.intel.com>
Date:   Mon, 18 Mar 2019 20:46:17 +0300
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Implemented basic integration test for Zstd based trace
compression/decompression in record and report modes.

Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
---
 .../tests/shell/record+zstd_comp_decomp.sh    | 35 +++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100755 tools/perf/tests/shell/record+zstd_comp_decomp.sh

diff --git a/tools/perf/tests/shell/record+zstd_comp_decomp.sh b/tools/perf/tests/shell/record+zstd_comp_decomp.sh
new file mode 100755
index 000000000000..c0ff142bf66a
--- /dev/null
+++ b/tools/perf/tests/shell/record+zstd_comp_decomp.sh
@@ -0,0 +1,35 @@
+#!/bin/sh
+# record trace Zstd compression/decompression
+
+trace_file=$(mktemp /tmp/perf.data.XXX)
+perf_tool=perf
+output=/dev/null
+
+skip_if_no_z_record() {
+	$perf_tool record -h 2>&1 | grep '\-z, \-\-compression\-level'
+}
+
+collect_z_record() {
+	echo "Collecting compressed record trace file:"
+	$perf_tool record -o $trace_file -g -z -F 25000 -- \
+		dd count=1000 if=/dev/random of=/dev/null > $output 2>&1
+}
+
+check_compressed_stats() {
+	echo "Checking compressed events stats:"
+	$perf_tool report -i $trace_file --header --stats | \
+		grep -E "(# compressed : Zstd,)|(COMPRESSED events:)" > $output 2>&1
+}
+
+check_compressed_output() {
+	$perf_tool inject -i $trace_file -o $trace_file.decomp &&
+	$perf_tool report -i $trace_file --stdio | head -n -3 > $trace_file.comp.output &&
+	$perf_tool report -i $trace_file.decomp --stdio | head -n -3 > $trace_file.decomp.output &&
+	diff $trace_file.comp.output $trace_file.decomp.output > $output 2>&1
+}
+
+skip_if_no_z_record || exit 2
+collect_z_record && check_compressed_stats && check_compressed_output
+err=$?
+rm -f $trace_file*
+exit $err
-- 
2.20.1