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Edit File : memstrack-start.sh \| Size : 1.76 KB
#!/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 >/dev/null 2>&1 \|\| . /lib/dracut-lib.sh # "sys/kernel/tracing" has the priority if exists. get_trace_base() { # trace access through debugfs would be obsolete if "/sys/kernel/tracing" is available. if [ -d "/sys/kernel/tracing" ]; then echo "/sys/kernel" else echo "/sys/kernel/debug" fi } is_debugfs_ready() { [ -f "$(get_trace_base)/tracing/trace" ] } prepare_debugfs() { local trace_base trace_base=$(get_trace_base) # old debugfs interface case. if ! [ -d "$trace_base/tracing" ]; then mount none -t debugfs $trace_base # new tracefs interface case. elif ! [ -f "$trace_base/tracing/trace" ]; then mount none -t tracefs "$trace_base/tracing" fi if ! [ -f "$trace_base/tracing/trace" ]; then echo "WARN: failed to mount debugfs" return 1 fi } if ! is_debugfs_ready ; then prepare_debugfs fi if [ -n "$DEBUG_MEM_LEVEL" ]; then if [ "$DEBUG_MEM_LEVEL" -ge 5 ]; then echo "memstrack - will report kernel module memory usage summary and top allocation stack" memstrack --report module_summary,module_top --notui --throttle 80 -o /.memstrack & elif [ "$DEBUG_MEM_LEVEL" -ge 4 ]; then echo "memstrack - will report memory usage summary" memstrack --report module_summary --notui --throttle 80 -o /.memstrack & else exit 0; fi fi PID=$! RET=$? if [ $RET -ne 0 ]; then echo "Failed to start memstrack, exit status: $RET" exit $RET fi # Wait a second for memstrack to setup everything, avoid missing any event sleep 1 echo $PID > /run/memstrack.pid disown Back

Edit File : memstrack-start.sh | Size : 1.76 KB

#!/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 >/dev/null 2>&1 || . /lib/dracut-lib.sh

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

is_debugfs_ready() {
    [ -f "$(get_trace_base)/tracing/trace" ]
}

prepare_debugfs() {
    local trace_base

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

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

if ! is_debugfs_ready ; then
    prepare_debugfs
fi

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

PID=$!
RET=$?

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

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

echo $PID > /run/memstrack.pid
disown

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