44 lines
847 B
Bash
44 lines
847 B
Bash
#!/bin/sh
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
# description: ftrace - function trace with cpumask
|
|
# requires: function:tracer
|
|
|
|
if ! which nproc ; then
|
|
nproc() {
|
|
ls -d /sys/devices/system/cpu/cpu[0-9]* | wc -l
|
|
}
|
|
fi
|
|
|
|
NP=`nproc`
|
|
|
|
if [ $NP -eq 1 ] ;then
|
|
echo "We can not test cpumask on UP environment"
|
|
exit_unresolved
|
|
fi
|
|
|
|
ORIG_CPUMASK=`cat tracing_cpumask`
|
|
|
|
do_reset() {
|
|
echo $ORIG_CPUMASK > tracing_cpumask
|
|
}
|
|
|
|
echo 0 > tracing_on
|
|
echo > trace
|
|
: "Bitmask only record on CPU1"
|
|
echo 2 > tracing_cpumask
|
|
MASK=0x`cat tracing_cpumask`
|
|
test `printf "%d" $MASK` -eq 2 || do_reset
|
|
|
|
echo function > current_tracer
|
|
echo 1 > tracing_on
|
|
(echo "forked")
|
|
echo 0 > tracing_on
|
|
|
|
: "Check CPU1 events are recorded"
|
|
grep -q -e "\[001\]" trace || do_reset
|
|
|
|
: "There should be No other cpu events"
|
|
! grep -qv -e "\[001\]" -e "^#" trace || do_reset
|
|
|
|
do_reset
|