_/run/initramfs/init.log_.
If "quiet" is set, it also logs to the console.
-**rd.memdebug=[0-3]**::
- Print memory usage info at various points, set the verbose level from 0 to 4.
+**rd.memdebug=[0-5]**::
+ Print memory usage info at various points, set the verbose level from 0 to 5.
+
Higher level means more debugging output:
+
1 - partial /proc/meminfo
2 - /proc/meminfo
3 - /proc/meminfo + /proc/slabinfo
- 4 - /proc/meminfo + /proc/slabinfo + tracekomem
- NOTE: tracekomem is a shell script utilizing kernel trace to track
- the rough total memory consumption of kernel modules during
- loading. It may override other trace configurations.
+ 4 - /proc/meminfo + /proc/slabinfo + memstrack summary
+ NOTE: memstrack is a memory tracing tool that tracks the total memory
+ consumption, and peak memory consumption of each kernel modules
+ and userspace progress during the whole initramfs runtime, report
+ is genereted and the end of initramsfs run.
+ 5 - /proc/meminfo + /proc/slabinfo + memstrack (with top memory stacktrace)
+ NOTE: memstrack (with top memory stacktrace) will print top memory
+ allocation stack traces during the whole initramfs runtime.
----
**rd.break**::
Requires: gzip
%if 0%{?fedora} || 0%{?rhel}
+Recommends: memstrack
Recommends: hardlink
Recommends: pigz
Recommends: kpartx
%{dracutlibdir}/modules.d/98syslog
%{dracutlibdir}/modules.d/98usrmount
%{dracutlibdir}/modules.d/99base
+%{dracutlibdir}/modules.d/99memstrack
%{dracutlibdir}/modules.d/99fs-lib
%{dracutlibdir}/modules.d/99shutdown
%attr(0644,root,root) %ghost %config(missingok,noreplace) %{_localstatedir}/log/dracut.log
setmemdebug() {
if [ -z "$DEBUG_MEM_LEVEL" ]; then
- export DEBUG_MEM_LEVEL=$(getargnum 0 0 3 rd.memdebug)
+ export DEBUG_MEM_LEVEL=$(getargnum 0 0 5 rd.memdebug)
fi
}
--- /dev/null
+#!/usr/bin/env bash
+. /lib/dracut-lib.sh
+
+if ! [ "$DEBUG_MEM_LEVEL" -ge 4 ]; then
+ exit 0
+fi
+
+if type -P systemctl >/dev/null; then
+ systemctl stop memstrack.service
+else
+ get_pid_of_tracer () {
+ local _user _pid _rest
+ read _user _pid _rest <<< $(ps aux | grep [m]emstrack | head -1)
+ echo $_pid
+ }
+
+ kill -s INT $(get_pid_of_tracer)
+ while [[ -n $(get_pid_of_tracer) ]]; do
+ sleep 1
+ done
+fi
+
+cat /.memstrack
--- /dev/null
+#!/bin/sh
+# Mount kernel debug fs so debug tools can work.
+# memdebug=4 and memdebug=5 requires debug fs to be mounted.
+# And there is no need to umount it.
+
+type getargnum >/dev/null 2>&1 || . /lib/dracut-lib.sh
+
+# "sys/kernel/tracing" has the priority if exists.
+get_trace_base() {
+ # trace access through debugfs would be obsolete if "/sys/kernel/tracing" is available.
+ if [ -d "/sys/kernel/tracing" ]; then
+ echo "/sys/kernel"
+ else
+ echo "/sys/kernel/debug"
+ fi
+}
+
+is_debugfs_ready() {
+ [ -f "$(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 $PID > /run/memstrack.pid
+disown
--- /dev/null
+[Unit]
+Description=Memstrack Anylazing Service
+DefaultDependencies=no
+Before=dracut-cmdline.service systemd-udevd.service local-fs-pre.target
+IgnoreOnIsolate=true
+
+[Service]
+Type=simple
+ExecStart=/bin/memstrack-start
+PIDFile=/run/memstrack.pid
+StandardInput=null
+StandardOutput=syslog+console
+StandardError=syslog+console
--- /dev/null
+#!/usr/bin/bash
+
+check() {
+ if type -P memstrack >/dev/null; then
+ dinfo "memstrack is available"
+ return 0
+ fi
+
+ dinfo "memstrack is not available"
+ dinfo "If you need to use rd.memdebug>=4, please install memstrack"
+
+ return 1
+}
+
+depends() {
+ return 0
+}
+
+install() {
+ inst "/bin/memstrack" "/bin/memstrack"
+
+ inst "$moddir/memstrack-start.sh" "/bin/memstrack-start"
+ inst_hook cleanup 99 "$moddir/memstrack-report.sh"
+
+ inst "$moddir/memstrack.service" "$systemdsystemunitdir/memstrack.service"
+ systemctl -q --root "$initdir" add-wants initrd.target memstrack.service
+}
projects / thirdparty / dracut.git / commitdiff
