diff options
author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-08-03 16:54:53 -0300 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-08-11 16:06:28 -0300 |
commit | a3534842ddd04675abc67e80432aacc01670cca8 (patch) | |
tree | da730d57fbd8a7e0bd016a8ad3cc7a66f4cb2693 /tools/perf/tests/shell | |
parent | 6d02acc1918094de12f885b35db9477e579b6bd0 (diff) |
perf test shell: Add 'probe_vfs_getname' shell test
First perf shell test:
# perf test vfs_getname
60: Add vfs_getname probe to get syscall args filenames: Ok
#
In verbose mode:
# perf test -v vfs_getname
60: Add vfs_getname probe to get syscall args filenames:
--- start ---
test child forked, pid 19146
Added new event:
probe:vfs_getname (on getname_flags:72 with pathname=result->name:string)
You can now use it in all perf tools, such as:
perf record -e probe:vfs_getname -aR sleep 1
test child finished with 0
---- end ----
Add vfs_getname probe to get syscall args filenames: Ok
#
And if the vmlinux file is not found:
# mv ../build/v4.12.0-rc6+/vmlinux ../build/v4.12.0-rc6+/vmlinux.hidden
# perf test vfs_getname
60: Add vfs_getname probe to get syscall args filenames: Skip
#
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Thomas Richter <tmricht@linux.vnet.ibm.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-8f3n22c1yn516ev30s603ow2@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/tests/shell')
-rwxr-xr-x | tools/perf/tests/shell/probe_vfs_getname.sh | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/tools/perf/tests/shell/probe_vfs_getname.sh b/tools/perf/tests/shell/probe_vfs_getname.sh new file mode 100755 index 000000000000..d5f5248de927 --- /dev/null +++ b/tools/perf/tests/shell/probe_vfs_getname.sh @@ -0,0 +1,30 @@ +# Add vfs_getname probe to get syscall args filenames +# +# Arnaldo Carvalho de Melo <acme@kernel.org>, 2017 + +perf probe -l | grep -q probe:vfs_getname +had_vfs_getname=$? + +cleanup_probe_vfs_getname() { + if [ $had_vfs_getname -eq 1 ] ; then + perf probe -q -d probe:vfs_getname + fi +} + +add_probe_vfs_getname() { + local verbose=$1 + if [ $had_vfs_getname -eq 1 ] ; then + line=$(perf probe -L getname_flags | egrep 'result.*=.*filename;' | sed -r 's/[[:space:]]+([[:digit:]]+)[[:space:]]+result->uptr.*/\1/') + perf probe $verbose "vfs_getname=getname_flags:${line} pathname=result->name:string" + fi +} + +skip_if_no_debuginfo() { + add_probe_vfs_getname -v 2>&1 | grep -q "^Failed to find the path for kernel" && return 2 + return 1 +} + +add_probe_vfs_getname || skip_if_no_debuginfo +err=$? +cleanup_probe_vfs_getname +exit $err |