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Diffstat (limited to '')
-rwxr-xr-x | tools/perf/tests/shell/record+script_probe_vfs_getname.sh | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/tools/perf/tests/shell/record+script_probe_vfs_getname.sh b/tools/perf/tests/shell/record+script_probe_vfs_getname.sh new file mode 100755 index 000000000..bf9e729b3 --- /dev/null +++ b/tools/perf/tests/shell/record+script_probe_vfs_getname.sh @@ -0,0 +1,43 @@ +#!/bin/sh +# Use vfs_getname probe to get syscall args filenames + +# Uses the 'perf test shell' library to add probe:vfs_getname to the system +# then use it with 'perf record' using 'touch' to write to a temp file, then +# checks that that was captured by the vfs_getname probe in the generated +# perf.data file, with the temp file name as the pathname argument. + +# SPDX-License-Identifier: GPL-2.0 +# Arnaldo Carvalho de Melo <acme@kernel.org>, 2017 + +. $(dirname $0)/lib/probe.sh + +skip_if_no_perf_probe || exit 2 + +. $(dirname $0)/lib/probe_vfs_getname.sh + +perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX) +file=$(mktemp /tmp/temporary_file.XXXXX) + +record_open_file() { + echo "Recording open file:" + perf record -o ${perfdata} -e probe:vfs_getname\* touch $file +} + +perf_script_filenames() { + echo "Looking at perf.data file for vfs_getname records for the file we touched:" + perf script -i ${perfdata} | \ + egrep " +touch +[0-9]+ +\[[0-9]+\] +[0-9]+\.[0-9]+: +probe:vfs_getname[_0-9]*: +\([[:xdigit:]]+\) +pathname=\"${file}\"" +} + +add_probe_vfs_getname || skip_if_no_debuginfo +err=$? +if [ $err -ne 0 ] ; then + exit $err +fi + +record_open_file && perf_script_filenames +err=$? +rm -f ${perfdata} +rm -f ${file} +cleanup_probe_vfs_getname +exit $err |