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authorSimon Glass <sjg@chromium.org>2013-06-11 11:14:45 -0700
committerTom Rini <trini@ti.com>2013-06-26 10:16:41 -0400
commit37544a6dabdaf474726ed8374c58598f61e3fd71 (patch)
treed7b360c16c85d12e73d17e0a3541ff3793bd8406
parente2ee100fd81043da51fb5e301ba9555ae3522869 (diff)
downloadblackbird-obmc-uboot-37544a6dabdaf474726ed8374c58598f61e3fd71.tar.gz
blackbird-obmc-uboot-37544a6dabdaf474726ed8374c58598f61e3fd71.zip
Add a simple test for sandbox trace
It is difficult to automatically test tracing on most architectures, but with sandbox it is easy enough to do a simple sanity check. Signed-off-by: Simon Glass <sjg@chromium.org>
-rwxr-xr-xtest/trace/test-trace.sh89
1 files changed, 89 insertions, 0 deletions
diff --git a/test/trace/test-trace.sh b/test/trace/test-trace.sh
new file mode 100755
index 0000000000..696a39675b
--- /dev/null
+++ b/test/trace/test-trace.sh
@@ -0,0 +1,89 @@
+# Copyright (c) 2013 The Chromium OS Authors.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+# Simple test script for tracing with sandbox
+
+OUTPUT_DIR=sandbox
+TRACE_OPT="FTRACE=1"
+
+fail() {
+ echo "Test failed: $1"
+ if [ -n ${tmp} ]; then
+ rm ${tmp}
+ fi
+ exit 1
+}
+
+build_uboot() {
+ echo "Build sandbox"
+ OPTS="O=${OUTPUT_DIR} ${TRACE_OPT}"
+ NUM_CPUS=$(grep -c processor /proc/cpuinfo)
+ make ${OPTS} sandbox_config
+ make ${OPTS} -s -j${NUM_CPUS}
+}
+
+run_trace() {
+ echo "Run trace"
+ ./${OUTPUT_DIR}/u-boot <<END
+ trace stats
+ hash sha256 0 10000
+ trace pause
+ trace stats
+ hash sha256 0 10000
+ trace stats
+ trace resume
+ hash sha256 0 10000
+ trace pause
+ trace stats
+ reset
+END
+}
+
+check_results() {
+ echo "Check results"
+
+ # Expect sha256 to run 3 times, so we see the string 6 times
+ if [ $(grep -c sha256 ${tmp}) -ne 6 ]; then
+ fail "sha256 error"
+ fi
+
+ # 4 sets of results (output of 'trace stats')
+ if [ $(grep -c "traced function calls" ${tmp}) -ne 4 ]; then
+ fail "trace output error"
+ fi
+
+ # Check trace counts. We expect to see an increase in the number of
+ # traced function calls between each 'trace stats' command, except
+ # between calls 2 and 3, where tracing is paused.
+ # This code gets the sign of the difference between each number and
+ # its predecessor.
+ counts="$(tr -d , <${tmp} | awk '/traced function calls/ { diff = $1 - upto; upto = $1; printf "%d ", diff < 0 ? -1 : (diff > 0 ? 1 : 0)}')"
+
+ if [ "${counts}" != "1 1 0 1 " ]; then
+ fail "trace collection error: ${counts}"
+ fi
+}
+
+echo "Simple trace test / sanity check using sandbox"
+echo
+tmp="$(tempfile)"
+build_uboot
+run_trace >${tmp}
+check_results ${tmp}
+rm ${tmp}
+echo "Test passed"
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