diff options
Diffstat (limited to 'tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc')
| -rw-r--r-- | tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc b/tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc new file mode 100644 index 000000000..312d23780 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc @@ -0,0 +1,33 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Register/unregister many kprobe events +# requires: kprobe_events + +# ftrace fentry skip size depends on the machine architecture. +# Currently HAVE_KPROBES_ON_FTRACE defined on x86 and powerpc64le +case `uname -m` in + x86_64|i[3456]86) OFFS=5;; + ppc64le) OFFS=8;; + *) OFFS=0;; +esac + +N=0 +echo "Setup up kprobes on first available 256 text symbols" +grep -i " t " /proc/kallsyms | cut -f3 -d" " | grep -v .*\\..* | \ +while read i; do + echo p ${i}+${OFFS} >> kprobe_events && N=$((N+1)) ||: + test $N -eq 256 && break +done + +L=`cat kprobe_events | wc -l` +if [ $L -ne 256 ]; then + echo "The number of kprobes events ($L) is not 256" + exit_fail +fi + +echo 1 > events/kprobes/enable +echo 0 > events/kprobes/enable +echo > kprobe_events +echo "Waiting for unoptimizing & freeing" +sleep 5 +echo "Done" |