blob: d5f5248de927fcdaf59474c9d343af3a930e5636 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
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
|
