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perf test stat_bpf_counters_cgrp: Fix shellcheck issue about logical operators

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[ Upstream commit 0dd1f815545d7210150642741c364521cc5cf116 ]

Running shellcheck on lock_contention.sh generates below warning:

In stat_bpf_counters_cgrp.sh line 28:
	if [ -d /sys/fs/cgroup/system.slice -a -d /sys/fs/cgroup/user.slice ]; then
                                            ^-- SC2166 (warning): Prefer [ p ] && [ q ] as [ p -a q ] is not well defined.

In stat_bpf_counters_cgrp.sh line 34:
	local self_cgrp=$(grep perf_event /proc/self/cgroup | cut -d: -f3)
        ^-------------^ SC3043 (warning): In POSIX sh, 'local' is undefined.
              ^-------^ SC2155 (warning): Declare and assign separately to avoid masking return values.
                        ^-- SC2046 (warning): Quote this to prevent word splitting.

In stat_bpf_counters_cgrp.sh line 51:
	local output
        ^----------^ SC3043 (warning): In POSIX sh, 'local' is undefined.

In stat_bpf_counters_cgrp.sh line 65:
	local output
        ^----------^ SC3043 (warning): In POSIX sh, 'local' is undefined.

Fixed above warnings by:
- Changing the expression [p -a q] to [p] && [q].
- Fixing shellcheck warnings for local usage, by prefixing
  function name to the variable.

Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Disha Goel <disgoel@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: linuxppc-dev@lists.ozlabs.org
Link: https://lore.kernel.org/r/20230709182800.53002-6-atrajeev@linux.vnet.ibm.com
Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Stable-dep-of: a84260e31402 ("perf test stat_bpf_counters_cgrp: Enhance perf stat cgroup BPF counter test")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Kajol Jain 2023-07-09 23:57:39 +05:30 • committed by Greg Kroah-Hartman
parent 523f6268e8
commit 66b23e7b08
1 changed files with 12 additions and 16 deletions
Download patch file Download diff file Expand all files Collapse all files

28
tools/perf/tests/shell/stat_bpf_counters_cgrp.sh
View file

@ -25,22 +25,22 @@ check_bpf_counter()
find_cgroups()
{
# try usual systemd slices first
if [ -d /sys/fs/cgroup/system.slice -a -d /sys/fs/cgroup/user.slice ]; then
if [ -d /sys/fs/cgroup/system.slice ] && [ -d /sys/fs/cgroup/user.slice ]; then
test_cgroups="system.slice,user.slice"
return
fi
# try root and self cgroups
local self_cgrp=$(grep perf_event /proc/self/cgroup | cut -d: -f3)
if [ -z ${self_cgrp} ]; then
find_cgroups_self_cgrp=$(grep perf_event /proc/self/cgroup | cut -d: -f3)
if [ -z ${find_cgroups_self_cgrp} ]; then
# cgroup v2 doesn't specify perf_event
self_cgrp=$(grep ^0: /proc/self/cgroup | cut -d: -f3)
find_cgroups_self_cgrp=$(grep ^0: /proc/self/cgroup | cut -d: -f3)
fi
if [ -z ${self_cgrp} ]; then
if [ -z ${find_cgroups_self_cgrp} ]; then
test_cgroups="/"
else
test_cgroups="/,${self_cgrp}"
test_cgroups="/,${find_cgroups_self_cgrp}"
fi
}
@ -48,13 +48,11 @@ find_cgroups()
# Just check if it runs without failure and has non-zero results.
check_system_wide_counted()
{
local output
output=$(perf stat -a --bpf-counters --for-each-cgroup ${test_cgroups} -e cpu-clock -x, sleep 1 2>&1)
if echo ${output} | grep -q -F "<not "; then
check_system_wide_counted_output=$(perf stat -a --bpf-counters --for-each-cgroup ${test_cgroups} -e cpu-clock -x, sleep 1 2>&1)
if echo ${check_system_wide_counted_output} | grep -q -F "<not "; then
echo "Some system-wide events are not counted"
if [ "${verbose}" = "1" ]; then
echo ${output}
echo ${check_system_wide_counted_output}
fi
exit 1
fi
@ -62,13 +60,11 @@ check_system_wide_counted()
check_cpu_list_counted()
{
local output
output=$(perf stat -C 1 --bpf-counters --for-each-cgroup ${test_cgroups} -e cpu-clock -x, taskset -c 1 sleep 1 2>&1)
if echo ${output} | grep -q -F "<not "; then
check_cpu_list_counted_output=$(perf stat -C 1 --bpf-counters --for-each-cgroup ${test_cgroups} -e cpu-clock -x, taskset -c 1 sleep 1 2>&1)
if echo ${check_cpu_list_counted_output} | grep -q -F "<not "; then
echo "Some CPU events are not counted"
if [ "${verbose}" = "1" ]; then
echo ${output}
echo ${check_cpu_list_counted_output}
fi
exit 1
fi