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perf test: Replace legacy ... with $(...)

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As detailed in https://www.shellcheck.net/wiki/SC2006:

The use of `...` is legacy syntax with several issues:
1. It has a series of undefined behaviors related to quoting in POSIX.
2. It imposes a custom escaping mode with surprising results.
3. It's exceptionally hard to nest.

$(...) command substitution has none of these problems,
and is therefore strongly encouraged.

Signed-off-by: Diederik de Haas <didi.debian@cknow.org>
Acked-by: Carsten Haitzler <carsten.haitzler@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230201214945.127474-3-didi.debian@cknow.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Diederik de Haas 2023-02-01 22:49:45 +01:00 committed by Arnaldo Carvalho de Melo
parent 5b420cf003
commit a912f5975f
1 changed files with 9 additions and 9 deletions
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18
tools/perf/tests/shell/lib/coresight.sh
View file

@ -58,9 +58,9 @@ perf_dump_aux_verify() {
# compiler may produce different code depending on the compiler and
# optimization options, so this is rough just to see if we're
# either missing almost all the data or all of it
ATOM_FX_NUM=`grep -c I_ATOM_F "$DUMP"`
ASYNC_NUM=`grep -c I_ASYNC "$DUMP"`
TRACE_INFO_NUM=`grep -c I_TRACE_INFO "$DUMP"`
ATOM_FX_NUM=$(grep -c I_ATOM_F "$DUMP")
ASYNC_NUM=$(grep -c I_ASYNC "$DUMP")
TRACE_INFO_NUM=$(grep -c I_TRACE_INFO "$DUMP")
rm -f "$DUMP"
# Arguments provide minimums for a pass
@ -96,18 +96,18 @@ perf_dump_aux_tid_verify() {
# The TID test tools will print a TID per stdout line that are being
# tested
TIDS=`cat "$2"`
TIDS=$(cat "$2")
# Scan the perf report to find the TIDs that are actually CID in hex
# and build a list of the ones found
FOUND_TIDS=`perf report --stdio --dump -i "$1" | \
FOUND_TIDS=$(perf report --stdio --dump -i "$1" | \
grep -o "CID=0x[0-9a-z]\+" | sed 's/CID=//g' | \
uniq | sort | uniq`
uniq | sort | uniq)
# No CID=xxx found - maybe your kernel is reporting these as
# VMID=xxx so look there
if test -z "$FOUND_TIDS"; then
FOUND_TIDS=`perf report --stdio --dump -i "$1" | \
FOUND_TIDS=$(perf report --stdio --dump -i "$1" | \
grep -o "VMID=0x[0-9a-z]\+" | sed 's/VMID=//g' | \
uniq | sort | uniq`
uniq | sort | uniq)
fi
# Iterate over the list of TIDs that the test says it has and find
@ -116,7 +116,7 @@ perf_dump_aux_tid_verify() {
for TID2 in $TIDS; do
FOUND=""
for TIDHEX in $FOUND_TIDS; do
TID=`printf "%i" $TIDHEX`
TID=$(printf "%i" $TIDHEX)
if test "$TID" -eq "$TID2"; then
FOUND="y"
break