forked from Qortal/Brooklyn
36 lines
977 B
Bash
36 lines
977 B
Bash
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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# description: ftrace - Max stack tracer
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# requires: stack_trace stack_trace_filter
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# Test the basic function of max-stack usage tracing
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echo > stack_trace_filter
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echo 0 > stack_max_size
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echo 1 > /proc/sys/kernel/stack_tracer_enabled
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: "Fork and wait for the first entry become !lock"
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timeout=10
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while [ $timeout -ne 0 ]; do
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( echo "forked" )
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FL=`grep " 0)" stack_trace`
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echo $FL | grep -q "lock" || break;
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timeout=$((timeout - 1))
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done
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echo 0 > /proc/sys/kernel/stack_tracer_enabled
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echo '*lock*' > stack_trace_filter
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test `cat stack_trace_filter | wc -l` -eq `grep lock stack_trace_filter | wc -l`
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echo 0 > stack_max_size
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echo 1 > /proc/sys/kernel/stack_tracer_enabled
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: "Fork and always the first entry including lock"
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timeout=10
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while [ $timeout -ne 0 ]; do
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( echo "forked" )
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FL=`grep " 0)" stack_trace`
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echo $FL | grep -q "lock"
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timeout=$((timeout - 1))
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done
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echo 0 > /proc/sys/kernel/stack_tracer_enabled
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