3b3bf0d112
Fix all the POSIX sh warnings in perf shell test test_brstack.sh Warnings fixed : * In POSIX sh, using lower/mixed case for signal names is undefined. Correcting that in this script. * In POSIX sh, 'local' is undefined. local is supported in many shells, but it's not in POSIX. In POSIX sh, you can adopt some convention to avoid accidentally overwriting variables names, e.g. prefixing with the function name, that is what I have done here. Signed-off-by: Geetika <geetika@linux.ibm.com> Cc: Disha Goel <disgoel@linux.vnet.ibm.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: linuxppc-dev@lists.ozlabs.org Link: https://lore.kernel.org/r/20230613164145.50488-14-atrajeev@linux.vnet.ibm.com Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Signed-off-by: Kajol Jain <kjain@linux.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
76 lines
2.8 KiB
Bash
Executable file
76 lines
2.8 KiB
Bash
Executable file
#!/bin/sh
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# Check branch stack sampling
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# SPDX-License-Identifier: GPL-2.0
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# German Gomez <german.gomez@arm.com>, 2022
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# skip the test if the hardware doesn't support branch stack sampling
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# and if the architecture doesn't support filter types: any,save_type,u
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if ! perf record -o- --no-buildid --branch-filter any,save_type,u -- true > /dev/null 2>&1 ; then
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echo "skip: system doesn't support filter types: any,save_type,u"
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exit 2
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fi
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TMPDIR=$(mktemp -d /tmp/__perf_test.program.XXXXX)
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TESTPROG="perf test -w brstack"
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cleanup() {
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rm -rf $TMPDIR
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}
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trap cleanup EXIT TERM INT
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test_user_branches() {
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echo "Testing user branch stack sampling"
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perf record -o $TMPDIR/perf.data --branch-filter any,save_type,u -- ${TESTPROG} > /dev/null 2>&1
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perf script -i $TMPDIR/perf.data --fields brstacksym | xargs -n1 > $TMPDIR/perf.script
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# example of branch entries:
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# brstack_foo+0x14/brstack_bar+0x40/P/-/-/0/CALL
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set -x
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grep -E -m1 "^brstack_bench\+[^ ]*/brstack_foo\+[^ ]*/IND_CALL/.*$" $TMPDIR/perf.script
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grep -E -m1 "^brstack_foo\+[^ ]*/brstack_bar\+[^ ]*/CALL/.*$" $TMPDIR/perf.script
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grep -E -m1 "^brstack_bench\+[^ ]*/brstack_foo\+[^ ]*/CALL/.*$" $TMPDIR/perf.script
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grep -E -m1 "^brstack_bench\+[^ ]*/brstack_bar\+[^ ]*/CALL/.*$" $TMPDIR/perf.script
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grep -E -m1 "^brstack_bar\+[^ ]*/brstack_foo\+[^ ]*/RET/.*$" $TMPDIR/perf.script
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grep -E -m1 "^brstack_foo\+[^ ]*/brstack_bench\+[^ ]*/RET/.*$" $TMPDIR/perf.script
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grep -E -m1 "^brstack_bench\+[^ ]*/brstack_bench\+[^ ]*/COND/.*$" $TMPDIR/perf.script
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grep -E -m1 "^brstack\+[^ ]*/brstack\+[^ ]*/UNCOND/.*$" $TMPDIR/perf.script
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set +x
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# some branch types are still not being tested:
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# IND COND_CALL COND_RET SYSCALL SYSRET IRQ SERROR NO_TX
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}
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# first argument <arg0> is the argument passed to "--branch-stack <arg0>,save_type,u"
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# second argument are the expected branch types for the given filter
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test_filter() {
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test_filter_filter=$1
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test_filter_expect=$2
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echo "Testing branch stack filtering permutation ($test_filter_filter,$test_filter_expect)"
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perf record -o $TMPDIR/perf.data --branch-filter $test_filter_filter,save_type,u -- ${TESTPROG} > /dev/null 2>&1
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perf script -i $TMPDIR/perf.data --fields brstack | xargs -n1 > $TMPDIR/perf.script
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# fail if we find any branch type that doesn't match any of the expected ones
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# also consider UNKNOWN branch types (-)
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if grep -E -vm1 "^[^ ]*/($test_filter_expect|-|( *))/.*$" $TMPDIR/perf.script; then
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return 1
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fi
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}
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set -e
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test_user_branches
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test_filter "any_call" "CALL|IND_CALL|COND_CALL|SYSCALL|IRQ"
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test_filter "call" "CALL|SYSCALL"
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test_filter "cond" "COND"
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test_filter "any_ret" "RET|COND_RET|SYSRET|ERET"
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test_filter "call,cond" "CALL|SYSCALL|COND"
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test_filter "any_call,cond" "CALL|IND_CALL|COND_CALL|IRQ|SYSCALL|COND"
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test_filter "cond,any_call,any_ret" "COND|CALL|IND_CALL|COND_CALL|SYSCALL|IRQ|RET|COND_RET|SYSRET|ERET"
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