SCRIPT_SH =
SCRIPT_SH += perf-archive.sh
-SCRIPT_SH += perf-with-kcore.sh
SCRIPT_SH += perf-iostat.sh
grep-libs = $(filter -l%,$(1))
endif
$(call QUIET_INSTALL, perf-archive) \
$(INSTALL) $(OUTPUT)perf-archive -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)'
- $(call QUIET_INSTALL, perf-with-kcore) \
- $(INSTALL) $(OUTPUT)perf-with-kcore -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)'
$(call QUIET_INSTALL, perf-iostat) \
$(INSTALL) $(OUTPUT)perf-iostat -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)'
ifndef NO_LIBAUDIT
$(call QUIET_CLEAN, bpf-skel) $(RM) -r $(SKEL_TMP_OUT) $(SKELETONS)
clean:: $(LIBTRACEEVENT)-clean $(LIBAPI)-clean $(LIBBPF)-clean $(LIBSUBCMD)-clean $(LIBPERF)-clean fixdep-clean python-clean bpf-skel-clean
- $(call QUIET_CLEAN, core-objs) $(RM) $(LIBPERF_A) $(OUTPUT)perf-archive $(OUTPUT)perf-with-kcore $(OUTPUT)perf-iostat $(LANG_BINDINGS)
+ $(call QUIET_CLEAN, core-objs) $(RM) $(LIBPERF_A) $(OUTPUT)perf-archive $(OUTPUT)perf-iostat $(LANG_BINDINGS)
$(Q)find $(or $(OUTPUT),.) -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete
$(Q)$(RM) $(OUTPUT).config-detected
$(call QUIET_CLEAN, core-progs) $(RM) $(ALL_PROGRAMS) perf perf-read-vdso32 perf-read-vdsox32 $(OUTPUT)pmu-events/jevents $(OUTPUT)$(LIBJVMTI).so
+++ /dev/null
-#!/bin/bash
-# SPDX-License-Identifier: GPL-2.0-only
-# perf-with-kcore: use perf with a copy of kcore
-# Copyright (c) 2014, Intel Corporation.
-#
-
-set -e
-
-usage()
-{
- echo "Usage: perf-with-kcore <perf sub-command> <perf.data directory> [<sub-command options> [ -- <workload>]]" >&2
- echo " <perf sub-command> can be record, script, report or inject" >&2
- echo " or: perf-with-kcore fix_buildid_cache_permissions" >&2
- exit 1
-}
-
-find_perf()
-{
- if [ -n "$PERF" ] ; then
- return
- fi
- PERF=`which perf || true`
- if [ -z "$PERF" ] ; then
- echo "Failed to find perf" >&2
- exit 1
- fi
- if [ ! -x "$PERF" ] ; then
- echo "Failed to find perf" >&2
- exit 1
- fi
- echo "Using $PERF"
- "$PERF" version
-}
-
-copy_kcore()
-{
- echo "Copying kcore"
-
- if [ $EUID -eq 0 ] ; then
- SUDO=""
- else
- SUDO="sudo"
- fi
-
- rm -f perf.data.junk
- ("$PERF" record -o perf.data.junk "${PERF_OPTIONS[@]}" -- sleep 60) >/dev/null 2>/dev/null &
- PERF_PID=$!
-
- # Need to make sure that perf has started
- sleep 1
-
- KCORE=$(($SUDO "$PERF" buildid-cache -v -f -k /proc/kcore >/dev/null) 2>&1)
- case "$KCORE" in
- "kcore added to build-id cache directory "*)
- KCORE_DIR=${KCORE#"kcore added to build-id cache directory "}
- ;;
- *)
- kill $PERF_PID
- wait >/dev/null 2>/dev/null || true
- rm perf.data.junk
- echo "$KCORE"
- echo "Failed to find kcore" >&2
- exit 1
- ;;
- esac
-
- kill $PERF_PID
- wait >/dev/null 2>/dev/null || true
- rm perf.data.junk
-
- $SUDO cp -a "$KCORE_DIR" "$(pwd)/$PERF_DATA_DIR"
- $SUDO rm -f "$KCORE_DIR/kcore"
- $SUDO rm -f "$KCORE_DIR/kallsyms"
- $SUDO rm -f "$KCORE_DIR/modules"
- $SUDO rmdir "$KCORE_DIR"
-
- KCORE_DIR_BASENAME=$(basename "$KCORE_DIR")
- KCORE_DIR="$(pwd)/$PERF_DATA_DIR/$KCORE_DIR_BASENAME"
-
- $SUDO chown $UID "$KCORE_DIR"
- $SUDO chown $UID "$KCORE_DIR/kcore"
- $SUDO chown $UID "$KCORE_DIR/kallsyms"
- $SUDO chown $UID "$KCORE_DIR/modules"
-
- $SUDO chgrp $GROUPS "$KCORE_DIR"
- $SUDO chgrp $GROUPS "$KCORE_DIR/kcore"
- $SUDO chgrp $GROUPS "$KCORE_DIR/kallsyms"
- $SUDO chgrp $GROUPS "$KCORE_DIR/modules"
-
- ln -s "$KCORE_DIR_BASENAME" "$PERF_DATA_DIR/kcore_dir"
-}
-
-fix_buildid_cache_permissions()
-{
- if [ $EUID -ne 0 ] ; then
- echo "This script must be run as root via sudo " >&2
- exit 1
- fi
-
- if [ -z "$SUDO_USER" ] ; then
- echo "This script must be run via sudo" >&2
- exit 1
- fi
-
- USER_HOME=$(bash <<< "echo ~$SUDO_USER")
-
- echo "Fixing buildid cache permissions"
-
- find "$USER_HOME/.debug" -xdev -type d ! -user "$SUDO_USER" -ls -exec chown "$SUDO_USER" \{\} \;
- find "$USER_HOME/.debug" -xdev -type f -links 1 ! -user "$SUDO_USER" -ls -exec chown "$SUDO_USER" \{\} \;
- find "$USER_HOME/.debug" -xdev -type l ! -user "$SUDO_USER" -ls -exec chown -h "$SUDO_USER" \{\} \;
-
- if [ -n "$SUDO_GID" ] ; then
- find "$USER_HOME/.debug" -xdev -type d ! -group "$SUDO_GID" -ls -exec chgrp "$SUDO_GID" \{\} \;
- find "$USER_HOME/.debug" -xdev -type f -links 1 ! -group "$SUDO_GID" -ls -exec chgrp "$SUDO_GID" \{\} \;
- find "$USER_HOME/.debug" -xdev -type l ! -group "$SUDO_GID" -ls -exec chgrp -h "$SUDO_GID" \{\} \;
- fi
-
- echo "Done"
-}
-
-check_buildid_cache_permissions()
-{
- if [ $EUID -eq 0 ] ; then
- return
- fi
-
- PERMISSIONS_OK+=$(find "$HOME/.debug" -xdev -type d ! -user "$USER" -print -quit)
- PERMISSIONS_OK+=$(find "$HOME/.debug" -xdev -type f -links 1 ! -user "$USER" -print -quit)
- PERMISSIONS_OK+=$(find "$HOME/.debug" -xdev -type l ! -user "$USER" -print -quit)
-
- PERMISSIONS_OK+=$(find "$HOME/.debug" -xdev -type d ! -group "$GROUPS" -print -quit)
- PERMISSIONS_OK+=$(find "$HOME/.debug" -xdev -type f -links 1 ! -group "$GROUPS" -print -quit)
- PERMISSIONS_OK+=$(find "$HOME/.debug" -xdev -type l ! -group "$GROUPS" -print -quit)
-
- if [ -n "$PERMISSIONS_OK" ] ; then
- echo "*** WARNING *** buildid cache permissions may need fixing" >&2
- fi
-}
-
-record()
-{
- echo "Recording"
-
- if [ $EUID -ne 0 ] ; then
-
- if [ "$(cat /proc/sys/kernel/kptr_restrict)" -ne 0 ] ; then
- echo "*** WARNING *** /proc/sys/kernel/kptr_restrict prevents access to kernel addresses" >&2
- fi
-
- if echo "${PERF_OPTIONS[@]}" | grep -q ' -a \|^-a \| -a$\|^-a$\| --all-cpus \|^--all-cpus \| --all-cpus$\|^--all-cpus$' ; then
- echo "*** WARNING *** system-wide tracing without root access will not be able to read all necessary information from /proc" >&2
- fi
-
- if echo "${PERF_OPTIONS[@]}" | grep -q 'intel_pt\|intel_bts\| -I\|^-I' ; then
- if [ "$(cat /proc/sys/kernel/perf_event_paranoid)" -gt -1 ] ; then
- echo "*** WARNING *** /proc/sys/kernel/perf_event_paranoid restricts buffer size and tracepoint (sched_switch) use" >&2
- fi
-
- if echo "${PERF_OPTIONS[@]}" | grep -q ' --per-thread \|^--per-thread \| --per-thread$\|^--per-thread$' ; then
- true
- elif echo "${PERF_OPTIONS[@]}" | grep -q ' -t \|^-t \| -t$\|^-t$' ; then
- true
- elif [ ! -r /sys/kernel/debug -o ! -x /sys/kernel/debug ] ; then
- echo "*** WARNING *** /sys/kernel/debug permissions prevent tracepoint (sched_switch) use" >&2
- fi
- fi
- fi
-
- if [ -z "$1" ] ; then
- echo "Workload is required for recording" >&2
- usage
- fi
-
- if [ -e "$PERF_DATA_DIR" ] ; then
- echo "'$PERF_DATA_DIR' exists" >&2
- exit 1
- fi
-
- find_perf
-
- mkdir "$PERF_DATA_DIR"
-
- echo "$PERF record -o $PERF_DATA_DIR/perf.data ${PERF_OPTIONS[@]} -- $@"
- "$PERF" record -o "$PERF_DATA_DIR/perf.data" "${PERF_OPTIONS[@]}" -- "$@" || true
-
- if rmdir "$PERF_DATA_DIR" > /dev/null 2>/dev/null ; then
- exit 1
- fi
-
- copy_kcore
-
- echo "Done"
-}
-
-subcommand()
-{
- find_perf
- check_buildid_cache_permissions
- echo "$PERF $PERF_SUB_COMMAND -i $PERF_DATA_DIR/perf.data --kallsyms=$PERF_DATA_DIR/kcore_dir/kallsyms $@"
- "$PERF" $PERF_SUB_COMMAND -i "$PERF_DATA_DIR/perf.data" "--kallsyms=$PERF_DATA_DIR/kcore_dir/kallsyms" "$@"
-}
-
-if [ "$1" = "fix_buildid_cache_permissions" ] ; then
- fix_buildid_cache_permissions
- exit 0
-fi
-
-PERF_SUB_COMMAND=$1
-PERF_DATA_DIR=$2
-shift || true
-shift || true
-
-if [ -z "$PERF_SUB_COMMAND" ] ; then
- usage
-fi
-
-if [ -z "$PERF_DATA_DIR" ] ; then
- usage
-fi
-
-case "$PERF_SUB_COMMAND" in
-"record")
- while [ "$1" != "--" ] ; do
- PERF_OPTIONS+=("$1")
- shift || break
- done
- if [ "$1" != "--" ] ; then
- echo "Options and workload are required for recording" >&2
- usage
- fi
- shift
- record "$@"
-;;
-"script")
- subcommand "$@"
-;;
-"report")
- subcommand "$@"
-;;
-"inject")
- subcommand "$@"
-;;
-*)
- usage
-;;
-esac
projects / linux.git / commitdiff