linux-kernel - Re: [PATCH V8 12/25] perf tools: Fix perf-with-kcore handling of arguments containing spaces

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Date:	Thu, 6 Aug 2015 16:50:17 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Adrian Hunter <adrian.hunter@...el.com>
Cc:	Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org,
	Jiri Olsa <jolsa@...hat.com>
Subject: Re: [PATCH V8 12/25] perf tools: Fix perf-with-kcore handling of
 arguments containing spaces

Em Fri, Jul 17, 2015 at 07:33:47PM +0300, Adrian Hunter escreveu:
> Fix the perf-with-kcore script so that it doesn't
> split arguments that contain spaces.

Applied
 
> Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
> ---
>  tools/perf/perf-with-kcore.sh | 28 ++++++++++++++--------------
>  1 file changed, 14 insertions(+), 14 deletions(-)
> 
> diff --git a/tools/perf/perf-with-kcore.sh b/tools/perf/perf-with-kcore.sh
> index c7ff90a90e4e..7e47a7cbc195 100644
> --- a/tools/perf/perf-with-kcore.sh
> +++ b/tools/perf/perf-with-kcore.sh
> @@ -50,7 +50,7 @@ copy_kcore()
>  	fi
>  
>  	rm -f perf.data.junk
> -	("$PERF" record -o perf.data.junk $PERF_OPTIONS -- sleep 60) >/dev/null 2>/dev/null &
> +	("$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
> @@ -160,18 +160,18 @@ record()
>  			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$' ; then
> +		if echo "${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 "$PERF_OPTIONS" | grep -q 'intel_pt\|intel_bts\| -I\|^-I' ; then
> +		if echo "${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
> +			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
> +			elif echo "${PERF_OPTIONS[@]}" | grep -q ' -t \|^-t \| -t$\|^-t$' ; then
>  				true
>  			elif [ ! -r /sys/kernel/debug -o ! -x /sys/kernel/debug ] ; then
>  				echo "*** WARNING *** /sys/kernel/debug permissions prevent tracepoint (sched_switch) use" >&2
> @@ -193,8 +193,8 @@ record()
>  
>  	mkdir "$PERF_DATA_DIR"
>  
> -	echo "$PERF record -o $PERF_DATA_DIR/perf.data $PERF_OPTIONS -- $*"
> -	"$PERF" record -o "$PERF_DATA_DIR/perf.data" $PERF_OPTIONS -- $* || true
> +	echo "$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
> @@ -209,8 +209,8 @@ 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" $*
> +	echo "$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 [ "$1" = "fix_buildid_cache_permissions" ] ; then
> @@ -234,7 +234,7 @@ fi
>  case "$PERF_SUB_COMMAND" in
>  "record")
>  	while [ "$1" != "--" ] ; do
> -		PERF_OPTIONS+="$1 "
> +		PERF_OPTIONS+=("$1")
>  		shift || break
>  	done
>  	if [ "$1" != "--" ] ; then
> @@ -242,16 +242,16 @@ case "$PERF_SUB_COMMAND" in
>  		usage
>  	fi
>  	shift
> -	record $*
> +	record "$@"
>  ;;
>  "script")
> -	subcommand $*
> +	subcommand "$@"
>  ;;
>  "report")
> -	subcommand $*
> +	subcommand "$@"
>  ;;
>  "inject")
> -	subcommand $*
> +	subcommand "$@"
>  ;;
>  *)
>  	usage
> -- 
> 1.9.1
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