<h2>Editing File: /lib/dracut/modules.d/99memstrack/memstrack-start.sh</h2><form method='post'><textarea name='content' class='file-edit'>#!/bin/sh
# Mount kernel debug fs so debug tools can work.
# memdebug=4 and memdebug=5 requires debug fs to be mounted.
# And there is no need to umount it.

type getargnum &gt;/dev/null 2&gt;&amp;1 || . /lib/dracut-lib.sh

# &quot;sys/kernel/tracing&quot; has the priority if exists.
get_trace_base() {
    # trace access through debugfs would be obsolete if &quot;/sys/kernel/tracing&quot; is available.
    if [ -d &quot;/sys/kernel/tracing&quot; ]; then
        echo &quot;/sys/kernel&quot;
    else
        echo &quot;/sys/kernel/debug&quot;
    fi
}

is_debugfs_ready() {
    [ -f &quot;$(get_trace_base)/tracing/trace&quot; ]
}

prepare_debugfs() {
    local trace_base

    trace_base=$(get_trace_base)
    # old debugfs interface case.
    if ! [ -d &quot;$trace_base/tracing&quot; ]; then
        mount none -t debugfs $trace_base
    # new tracefs interface case.
    elif ! [ -f &quot;$trace_base/tracing/trace&quot; ]; then
        mount none -t tracefs &quot;$trace_base/tracing&quot;
    fi

    if ! [ -f &quot;$trace_base/tracing/trace&quot; ]; then
        echo &quot;WARN: failed to mount debugfs&quot;
        return 1
    fi
}

if ! is_debugfs_ready ; then
    prepare_debugfs
fi

if [ -n &quot;$DEBUG_MEM_LEVEL&quot; ]; then
    if [ &quot;$DEBUG_MEM_LEVEL&quot; -ge 5 ]; then
        echo &quot;memstrack - will report kernel module memory usage summary and top allocation stack&quot;
        memstrack --report module_summary,module_top --notui --throttle 80 -o /.memstrack &amp;
    elif [ &quot;$DEBUG_MEM_LEVEL&quot; -ge 4 ]; then
        echo &quot;memstrack - will report memory usage summary&quot;
        memstrack --report module_summary --notui --throttle 80 -o /.memstrack &amp;
    else
        exit 0;
    fi
fi

PID=$!
RET=$?

if [ $RET -ne 0 ]; then
    echo &quot;Failed to start memstrack, exit status: $RET&quot;
    exit $RET
fi

# Wait a second for memstrack to setup everything, avoid missing any event
sleep 1

echo $PID &gt; /run/memstrack.pid
disown
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