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The rv tool needs automated testing to catch regressions and verify correct functionality across different usage scenarios. Add selftests that validate monitor listing (including containers and nested monitors), monitor execution with different configurations (reactors, verbose output, tracing), and trace output format for both per-task and per-cpu monitors. Error handling paths are also tested. Tests use a shared engine for common patterns. Acked-by: Nam Cao <namcao@linutronix.de> Link: https://lore.kernel.org/r/20260723074534.43521-7-gmonaco@redhat.com Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>
96 lines
3.1 KiB
Bash
96 lines
3.1 KiB
Bash
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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source ../tests/engine.sh
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test_begin
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set_timeout 30s
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RVDIR=/sys/kernel/tracing/rv/
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# Help and basic tests
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check "verify mon subcommand help" \
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"$RV mon --help" 0 "run a monitor"
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# Error handling tests
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check "mon without monitor name" \
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"$RV mon" 1 "usage: rv mon"
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check "invalid monitor name" \
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"$RV mon invalid" 1 "monitor invalid does not exist"
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if [ -d $RVDIR/monitors/wwnr ]; then
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check "invalid reactor name" \
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"$RV mon wwnr -r invalid" 1 "failed to set invalid reactor, is it available?"
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check "monitor name is substring of another monitor" \
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"$RV mon nr" 1 "monitor nr does not exist"
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check "already enabled monitor returns error" \
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"echo 1 > $RVDIR/monitors/wwnr/enable; $RV mon wwnr" 1 \
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"monitor wwnr (in-kernel) is already enabled"
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echo 0 > $RVDIR/monitors/wwnr/enable
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fi
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# rv mon runs until terminated
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set_expected_timeout 2s
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# Run monitors with different configurations
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check_if_exists "run the monitor without parameters" \
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"$RV mon wwnr" "$RVDIR/monitors/wwnr" "" "."
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check_if_exists "run the monitor as verbose" \
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"$RV mon wwnr -v" "$RVDIR/monitors/wwnr" \
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"my pid is \$pid" "\(event\|error\)"
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check_if_exists "run the monitor with a reactor" \
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"$RV mon wwnr -r printk & sleep .5 && cat $RVDIR/monitors/wwnr/reactors && wait" \
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"$RVDIR/monitors/wwnr/reactors" "\[printk\]"
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check_if_exists "reactor is restored after exit" \
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"cat $RVDIR/monitors/wwnr/reactors" \
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"$RVDIR/monitors/wwnr/reactors" "\[nop\]"
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check_if_exists "run a nested monitor with a reactor" \
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"$RV mon snroc -r printk & sleep .5 && cat $RVDIR/monitors/sched/snroc/reactors && wait" \
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"$RVDIR/monitors/sched/snroc/reactors" "\[printk\]"
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check_if_exists "run an explicitly nested monitor with a reactor" \
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"$RV mon sched:sssw -r printk & sleep .5 && cat $RVDIR/monitors/sched/sssw/reactors && wait" \
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"$RVDIR/monitors/sched/sssw/reactors" "\[printk\]"
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check_if_exists "run container monitor" \
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"$RV mon sched & sleep .5 && cat $RVDIR/monitors/sched/{sssw,sco}/enable && wait" \
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"$RVDIR/monitors/sched" "1" "0" "^1$"
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# Regexes for the trace
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header="^[[:space:]]\+\(\([][A-Z_x<>-]\+\||\)[[:space:]]*\)\+$"
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type="\(event\|error\)[[:space:]]\+"
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genpid="[0-9]\+[[:space:]]\+"
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selfpid="\$pid[[:space:]]\+"
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cpu="\[[0-9]\{3\}\][[:space:]]\+"
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state="[a-z_]\+ "
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trace_task="${genpid}${cpu}${type}${genpid}${state}"
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trace_task_self="${genpid}${cpu}${type}${selfpid}${state}"
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trace_cpu="${genpid}${cpu}${type}${state}"
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trace_cpu_self="${selfpid}${cpu}${type}${state}"
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check_if_exists "run per-task monitor with tracing" \
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"$RV mon sssw -t" "$RVDIR/monitors/sched/sssw" \
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"$header" "$trace_task_self" "\($header\|$trace_task\)"
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check_if_exists "run per-task monitor tracing also self" \
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"$RV mon sched:sssw -t -s" "$RVDIR/monitors/sched/sssw" \
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"$trace_task_self" "" "\($header\|$trace_task\)"
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check_if_exists "run per-cpu monitor with tracing" \
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"$RV mon sched:sco -t" "$RVDIR/monitors/sched/sco" \
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"$header" "$trace_cpu_self" "\($header\|$trace_cpu\)"
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check_if_exists "run per-cpu monitor tracing also self" \
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"$RV mon sco -t -s" "$RVDIR/monitors/sched/sco" \
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"$trace_cpu_self" "" "\($header\|$trace_cpu\)"
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test_end
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