| #!/bin/sh |
| # SPDX-License-Identifier: GPL-2.0 |
| # description: Generic dynamic event - add/remove probes with BTF arguments |
| # requires: dynamic_events "<argname>":README |
| |
| KPROBES= |
| FPROBES= |
| FIELDS= |
| |
| if grep -qF "p[:[<group>/][<event>]] <place> [<args>]" README ; then |
| KPROBES=yes |
| fi |
| if grep -qF "f[:[<group>/][<event>]] <func-name>[%return] [<args>]" README ; then |
| FPROBES=yes |
| fi |
| if grep -qF "<argname>[->field[->field|.field...]]" README ; then |
| FIELDS=yes |
| fi |
| |
| if [ -z "$KPROBES" -a -z "$FPROBES" ] ; then |
| exit_unsupported |
| fi |
| |
| echo 0 > events/enable |
| echo > dynamic_events |
| |
| TP=kfree |
| TP2=kmem_cache_alloc |
| TP3=getname_flags |
| TP4=sched_wakeup |
| |
| if [ "$FPROBES" ] ; then |
| echo "f:fpevent $TP object" >> dynamic_events |
| echo "t:tpevent $TP ptr" >> dynamic_events |
| |
| grep -q "fpevent.*object=object" dynamic_events |
| grep -q "tpevent.*ptr=ptr" dynamic_events |
| |
| echo > dynamic_events |
| |
| echo "f:fpevent $TP "'$arg1' >> dynamic_events |
| grep -q "fpevent.*object=object" dynamic_events |
| |
| echo > dynamic_events |
| |
| echo "f:fpevent $TP "'$arg*' >> dynamic_events |
| echo "t:tpevent $TP "'$arg*' >> dynamic_events |
| |
| grep -q "fpevent.*object=object" dynamic_events |
| grep -q "tpevent.*ptr=ptr" dynamic_events |
| ! grep -q "tpevent.*_data" dynamic_events |
| fi |
| |
| echo > dynamic_events |
| |
| if [ "$FIELDS" ] ; then |
| echo "t:tpevent ${TP2} obj_size=s->object_size" >> dynamic_events |
| echo "f:fpevent ${TP3}%return path=\$retval->name:string" >> dynamic_events |
| echo "t:tpevent2 ${TP4} p->se.group_node.next->prev" >> dynamic_events |
| |
| grep -q "tpevent .*obj_size=s->object_size" dynamic_events |
| grep -q "fpevent.*path=\$retval->name:string" dynamic_events |
| grep -q 'tpevent2 .*p->se.group_node.next->prev' dynamic_events |
| |
| echo > dynamic_events |
| fi |
| |
| if [ "$KPROBES" ] ; then |
| echo "p:kpevent $TP object" >> dynamic_events |
| grep -q "kpevent.*object=object" dynamic_events |
| |
| echo > dynamic_events |
| |
| echo "p:kpevent $TP "'$arg*' >> dynamic_events |
| grep -q "kpevent.*object=object" dynamic_events |
| fi |
| |
| clear_trace |