fa73514d5e
Add a test to the tracing selftests that will catch if the .sym or .sym-offset modifiers break in the future. Link: https://lkml.kernel.org/r/20210707121451.101a1002@oasis.local.home Acked-by: Tom Zanussi <zanussi@kernel.org> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
76 lines
2.6 KiB
Bash
76 lines
2.6 KiB
Bash
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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# description: event trigger - test histogram trigger
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# requires: set_event events/sched/sched_process_fork/trigger events/sched/sched_process_fork/hist
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# flags: instance
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fail() { #msg
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echo $1
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exit_fail
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}
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echo "Test histogram basic trigger"
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echo 'hist:keys=parent_pid:vals=child_pid' > events/sched/sched_process_fork/trigger
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for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
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grep parent_pid events/sched/sched_process_fork/hist > /dev/null || \
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fail "hist trigger on sched_process_fork did not work"
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grep child events/sched/sched_process_fork/hist > /dev/null || \
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fail "hist trigger on sched_process_fork did not work"
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reset_trigger
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echo "Test histogram with compound keys"
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echo 'hist:keys=parent_pid,child_pid' > events/sched/sched_process_fork/trigger
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for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
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grep '^{ parent_pid:.*, child_pid:.*}' events/sched/sched_process_fork/hist > /dev/null || \
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fail "compound keys on sched_process_fork did not work"
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reset_trigger
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echo "Test histogram with string key"
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echo 'hist:keys=parent_comm' > events/sched/sched_process_fork/trigger
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for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
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COMM=`cat /proc/$$/comm`
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grep "parent_comm: $COMM" events/sched/sched_process_fork/hist > /dev/null || \
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fail "string key on sched_process_fork did not work"
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reset_trigger
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echo "Test histogram with sym modifier"
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echo 'hist:keys=call_site.sym' > events/kmem/kmalloc/trigger
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for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
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grep '{ call_site: \[[0-9a-f][0-9a-f]*\] [_a-zA-Z][_a-zA-Z]* *}' events/kmem/kmalloc/hist > /dev/null || \
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fail "sym modifier on kmalloc call_site did not work"
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reset_trigger
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echo "Test histogram with sym-offset modifier"
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echo 'hist:keys=call_site.sym-offset' > events/kmem/kmalloc/trigger
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for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
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grep '{ call_site: \[[0-9a-f][0-9a-f]*\] [_a-zA-Z][_a-zA-Z]*+0x[0-9a-f][0-9a-f]*' events/kmem/kmalloc/hist > /dev/null || \
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fail "sym-offset modifier on kmalloc call_site did not work"
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reset_trigger
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echo "Test histogram with sort key"
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echo 'hist:keys=parent_pid,child_pid:sort=child_pid.ascending' > events/sched/sched_process_fork/trigger
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for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
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check_inc() {
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while [ $# -gt 1 ]; do
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[ $1 -gt $2 ] && return 1
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shift 1
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done
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return 0
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}
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check_inc `grep -o "child_pid:[[:space:]]*[[:digit:]]*" \
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events/sched/sched_process_fork/hist | cut -d: -f2 ` ||
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fail "sort param on sched_process_fork did not work"
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exit 0
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