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[PATCH v9 2/6] selftests/ftrace: Add clear_dynamic_events() to test cases

by Steven Rostedt

From: "Steven Rostedt (VMware)" <rostedt(a)goodmis.org> Add a function to remove all dynamic events from the tracing directory. It requires a loop as some of the dynamic events may depend on others being removed first. Also add a safety that prevents it from looping infinitely due to a bug where an event never gets removed. Link: https://lkml.kernel.org/r/20210819152825.348941368@goodmis.org Cc: Shuah Khan <shuah(a)kernel.org> Cc: Shuah Khan <skhan(a)linuxfoundation.org> Cc: linux-kselftest(a)vger.kernel.org Acked-by: Masami Hiramatsu <mhiramat(a)kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt(a)goodmis.org> --- .../testing/selftests/ftrace/test.d/functions | 22 +++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/tools/testing/selftests/ftrace/test.d/functions b/tools/testing/selftests/ftrace/test.d/functions index a6fac927ee82..f68d336b961b 100644 --- a/tools/testing/selftests/ftrace/test.d/functions +++ b/tools/testing/selftests/ftrace/test.d/functions @@ -83,6 +83,27 @@ clear_synthetic_events() { # reset all current synthetic events done } +clear_dynamic_events() { # reset all current dynamic events + again=1 + stop=1 + # loop mulitple times as some events require other to be removed first + while [ $again -eq 1 ]; do + stop=$((stop+1)) + # Prevent infinite loops + if [ $stop -gt 10 ]; then + break; + fi + again=2 + grep -v '^#' dynamic_events| + while read line; do + del=`echo $line | sed -e 's/^.$[^ ]*$.*/-\1/'` + if ! echo "$del" >> dynamic_events; then + again=1 + fi + done + done +} + initialize_ftrace() { # Reset ftrace to initial-state # As the initial state, ftrace will be set to nop tracer, # no events, no triggers, no filters, no function filters, @@ -93,6 +114,7 @@ initialize_ftrace() { # Reset ftrace to initial-state reset_events_filter reset_ftrace_filter disable_events + clear_dynamic_events [ -f set_event_pid ] && echo > set_event_pid [ -f set_ftrace_pid ] && echo > set_ftrace_pid [ -f set_ftrace_notrace ] && echo > set_ftrace_notrace -- 2.30.2

3 years, 10 months

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[PATCH v3 0/2] add KSM performance tests

by Zhansaya Bagdauletkyzy

Extend KSM self tests with a performance benchmark. These tests are not part of regular regression testing, as they are mainly intended to be used by developers making changes to the memory management subsystem. This patchset is a respin of the previous series: v2: https://lkml.org/lkml/2021/8/6/422 v1: https://lkml.org/lkml/2021/8/1/130 Zhansaya Bagdauletkyzy (2): selftests: vm: add KSM merging time test selftests: vm: add COW time test for KSM pages v2 -> v3: - address COW test review comments v1 -> v2: - replace MB with MiB - address COW test review comments tools/testing/selftests/vm/ksm_tests.c | 154 ++++++++++++++++++++++++- 1 file changed, 150 insertions(+), 4 deletions(-) -- 2.25.1

3 years, 10 months

3
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[PATCH] kselftest/arm64: pac: Fix skipping of tests on systems without PAC

by Mark Brown

The PAC tests check to see if the system supports the relevant PAC features but instead of skipping the tests if they can't be executed they fail the tests which makes things look like they're not working when they are. Signed-off-by: Mark Brown <broonie(a)kernel.org> --- tools/testing/selftests/arm64/pauth/pac.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/arm64/pauth/pac.c b/tools/testing/selftests/arm64/pauth/pac.c index 592fe538506e..b743daa772f5 100644 --- a/tools/testing/selftests/arm64/pauth/pac.c +++ b/tools/testing/selftests/arm64/pauth/pac.c @@ -25,13 +25,15 @@ do { \ unsigned long hwcaps = getauxval(AT_HWCAP); \ /* data key instructions are not in NOP space. This prevents a SIGILL */ \ - ASSERT_NE(0, hwcaps & HWCAP_PACA) TH_LOG("PAUTH not enabled"); \ + if (!(hwcaps & HWCAP_PACA)) \ + SKIP(return, "PAUTH not enabled"); \ } while (0) #define ASSERT_GENERIC_PAUTH_ENABLED() \ do { \ unsigned long hwcaps = getauxval(AT_HWCAP); \ /* generic key instructions are not in NOP space. This prevents a SIGILL */ \ - ASSERT_NE(0, hwcaps & HWCAP_PACG) TH_LOG("Generic PAUTH not enabled"); \ + if (!(hwcaps & HWCAP_PACG)) \ + SKIP(return, "Generic PAUTH not enabled"); \ } while (0) void sign_specific(struct signatures *sign, size_t val) @@ -256,7 +258,7 @@ TEST(single_thread_different_keys) unsigned long hwcaps = getauxval(AT_HWCAP); /* generic and data key instructions are not in NOP space. This prevents a SIGILL */ - ASSERT_NE(0, hwcaps & HWCAP_PACA) TH_LOG("PAUTH not enabled"); + ASSERT_PAUTH_ENABLED(); if (!(hwcaps & HWCAP_PACG)) { TH_LOG("WARNING: Generic PAUTH not enabled. Skipping generic key checks"); nkeys = NKEYS - 1; @@ -299,7 +301,7 @@ TEST(exec_changed_keys) unsigned long hwcaps = getauxval(AT_HWCAP); /* generic and data key instructions are not in NOP space. This prevents a SIGILL */ - ASSERT_NE(0, hwcaps & HWCAP_PACA) TH_LOG("PAUTH not enabled"); + ASSERT_PAUTH_ENABLED(); if (!(hwcaps & HWCAP_PACG)) { TH_LOG("WARNING: Generic PAUTH not enabled. Skipping generic key checks"); nkeys = NKEYS - 1; -- 2.20.1

3 years, 10 months

3
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[PATCH v8 5/5] selftests/ftrace: Add selftest for testing duplicate eprobes and kprobes

by Steven Rostedt

From: "Steven Rostedt (VMware)" <rostedt(a)goodmis.org> Add a selftest that makes sure that eprobes and kprobes can not be created with the same group and name as existing events. Cc: Shuah Khan <shuah(a)kernel.org> Cc: Shuah Khan <skhan(a)linuxfoundation.org> Cc: linux-kselftest(a)vger.kernel.org Signed-off-by: Steven Rostedt (VMware) <rostedt(a)goodmis.org> --- .../ftrace/test.d/dynevent/test_duplicates.tc | 28 +++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/test_duplicates.tc diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/test_duplicates.tc b/tools/testing/selftests/ftrace/test.d/dynevent/test_duplicates.tc new file mode 100644 index 000000000000..022b569267ed --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/dynevent/test_duplicates.tc @@ -0,0 +1,28 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Generic dynamic event - check if duplicate events are caught +# requires: dynamic_events "e[:[<group>/]<event>] <attached-group>.<attached-event>o [<args>]":README + +echo 0 > events/enable + +clear_dynamic_events + +# first create dynamic events for eprobes and kprobes. + +echo 'e:egroup/eevent syscalls/sys_enter_openat file=+0($filename):ustring' >> dynamic_events +echo 'p:kgroup/kevent vfs_open file=+0($arg2)' >> dynamic_events + +# Test eprobe for same eprobe, existing kprobe and existing event +! echo 'e:egroup/eevent syscalls/sys_enter_openat file=+0($filename):ustring' >> dynamic_events +! echo 'e:kgroup/kevent syscalls/sys_enter_openat file=+0($filename):ustring' >> dynamic_events +! echo 'e:syscalls/sys_enter_open syscalls/sys_enter_openat file=+0($filename):ustring' >> dynamic_events + +# Test kprobe for same kprobe, existing eprobe and existing event +! echo 'p:kgroup/kevent vfs_open file=+0($arg2)' >> dynamic_events +! echo 'p:egroup/eevent vfs_open file=+0($arg2)' >> dynamic_events +! echo 'p:syscalls/sys_enter_open vfs_open file=+0($arg2)' >> dynamic_events + +echo '-:egroup/eevent' >> dynamic_events +echo '-:kgroup/kevent' >> dynamic_events + +clear_trace -- 2.30.2

3 years, 10 months

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[PATCH v8 4/5] selftests/ftrace: Add selftest for testing eprobe events

by Steven Rostedt

From: "Steven Rostedt (VMware)" <rostedt(a)goodmis.org> Add a test to test event probes, by creating a synthetic event across sys_enter_openat and sys_exit_openat that passes the filename pointer from the enter of the system call to the exit, and then add an event probe to the synthetic event to make sure that the file name is seen. Link: https://lkml.kernel.org/r/20210819041842.884828019@goodmis.org Cc: Shuah Khan <shuah(a)kernel.org> Cc: Shuah Khan <skhan(a)linuxfoundation.org> Cc: linux-kselftest(a)vger.kernel.org Signed-off-by: Steven Rostedt (VMware) <rostedt(a)goodmis.org> --- .../test.d/dynevent/add_remove_eprobe.tc | 53 +++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/add_remove_eprobe.tc diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_eprobe.tc b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_eprobe.tc new file mode 100644 index 000000000000..7b242f29b916 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_eprobe.tc @@ -0,0 +1,53 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Generic dynamic event - add/remove eprobe events +# requires: dynamic_events "e[:[<group>/]<event>] <attached-group>.<attached-event> [<args>]":README + +echo 0 > events/enable + +clear_dynamic_events + +SYSTEM="syscalls" +START="sys_enter_openat" +END="sys_exit_openat" +FIELD="filename" +SYNTH="synth_open" +EPROBE="eprobe_open" + +echo "$SYNTH u64 filename; s64 ret;" > synthetic_events +echo "hist:keys=common_pid:__arg__1=$FIELD" > events/$SYSTEM/$START/trigger +echo "hist:keys=common_pid:filename=\$__arg__1,ret=ret:onmatch($SYSTEM.$START).trace($SYNTH,\$filename,\$ret)" > events/$SYSTEM/$END/trigger + +echo "e:$EPROBE synthetic/$SYNTH file=+0(\$filename):ustring ret=\$ret:s64" >> dynamic_events + +grep -q "$SYNTH" dynamic_events +grep -q "$EPROBE" dynamic_events +test -d events/synthetic/$SYNTH +test -d events/eprobes/$EPROBE + +echo 1 > events/eprobes/$EPROBE/enable +ls +echo 0 > events/eprobes/$EPROBE/enable + +content=`grep '^ *ls-' trace | grep 'file='` +nocontent=`grep '^ *ls-' trace | grep 'file=' | grep -v -e '"/' -e '"."'` || true + +if [ -z "$content" ]; then + exit_fail +fi + +if [ ! -z "$nocontent" ]; then + exit_fail +fi + +echo "-:$EPROBE" >> dynamic_events +echo '!'"hist:keys=common_pid:filename=\$__arg__1,ret=ret:onmatch($SYSTEM.$START).trace($SYNTH,\$filename,\$ret)" > events/$SYSTEM/$END/trigger +echo '!'"hist:keys=common_pid:__arg__1=$FIELD" > events/$SYSTEM/$START/trigger +echo '!'"$SYNTH u64 filename; s64 ret;" >> synthetic_events + +! grep -q "$SYNTH" dynamic_events +! grep -q "$EPROBE" dynamic_events +! test -d events/synthetic/$SYNTH +! test -d events/eprobes/$EPROBE + +clear_trace -- 2.30.2

3 years, 10 months

2
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[PATCH linux-next] tools/net: Use bitwise instead of arithmetic operator for flags

by CGEL

From: jing yangyang <jing.yangyang(a)zte.com.cn> This silences the following coccinelle warning: "WARNING: sum of probable bitmasks, consider |" Reported-by: Zeal Robot <zealci(a)zte.com.cn> Signed-off-by: jing yangyang <jing.yangyang(a)zte.com.cn> --- tools/testing/selftests/net/psock_fanout.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/net/psock_fanout.c b/tools/testing/selftests/net/psock_fanout.c index db45213..3653d64 100644 --- a/tools/testing/selftests/net/psock_fanout.c +++ b/tools/testing/selftests/net/psock_fanout.c @@ -111,8 +111,8 @@ static int sock_fanout_open(uint16_t typeflags, uint16_t group_id) static void sock_fanout_set_cbpf(int fd) { struct sock_filter bpf_filter[] = { - BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 80), /* ldb [80] */ - BPF_STMT(BPF_RET+BPF_A, 0), /* ret A */ + BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 80), /* ldb [80] */ + BPF_STMT(BPF_RET | BPF_A, 0), /* ret A */ }; struct sock_fprog bpf_prog; -- 1.8.3.1

3 years, 10 months

2
1
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[PATCH] kselftest/arm64: mte: Fix misleading output when skipping tests

by Mark Brown

When skipping the tests due to a lack of system support for MTE we currently print a message saying FAIL which makes it look like the test failed even though the test did actually report KSFT_SKIP, creating some confusion. Change the error message to say SKIP instead so things are clearer. Signed-off-by: Mark Brown <broonie(a)kernel.org> --- tools/testing/selftests/arm64/mte/mte_common_util.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/arm64/mte/mte_common_util.c b/tools/testing/selftests/arm64/mte/mte_common_util.c index f50ac31920d1..0328a1e08f65 100644 --- a/tools/testing/selftests/arm64/mte/mte_common_util.c +++ b/tools/testing/selftests/arm64/mte/mte_common_util.c @@ -298,7 +298,7 @@ int mte_default_setup(void) int ret; if (!(hwcaps2 & HWCAP2_MTE)) { - ksft_print_msg("FAIL: MTE features unavailable\n"); + ksft_print_msg("SKIP: MTE features unavailable\n"); return KSFT_SKIP; } /* Get current mte mode */ -- 2.20.1

3 years, 10 months

2
1
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[PATCH v2 0/5] selftests/bpf: minor fixups

by Li Zhijian

Fix a few issues reported by 0Day/LKP during runing selftests/bpf. Changelog: V2: - folded previous similar standalone patch to [1/5], and add acked tag from Song Liu - add acked tag to [2/5], [3/5] from Song Liu - [4/5]: move test_bpftool.py to TEST_PROGS_EXTENDED, files in TEST_GEN_PROGS_EXTENDED are generated by make. Otherwise, it will break out-of-tree install: 'make O=/kselftest-build SKIP_TARGETS= V=1 -C tools/testing/selftests install INSTALL_PATH=/kselftest-install' - [5/5]: new patch Li Zhijian (5): selftests/bpf: enlarge select() timeout for test_maps selftests/bpf: make test_doc_build.sh work from script directory selftests/bpf: add default bpftool built by selftests to PATH selftests/bpf: add missing files required by test_bpftool.sh for installing selftests/bpf: exit with KSFT_SKIP if no Makefile found tools/testing/selftests/bpf/Makefile | 4 +++- tools/testing/selftests/bpf/test_bpftool.sh | 6 ++++++ tools/testing/selftests/bpf/test_bpftool_build.sh | 2 +- tools/testing/selftests/bpf/test_doc_build.sh | 10 ++++++++-- tools/testing/selftests/bpf/test_maps.c | 2 +- 5 files changed, 19 insertions(+), 5 deletions(-) -- 2.32.0

3 years, 10 months

1
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[PATCH 1/3] selftests/bpf: make test_doc_build.sh work from script directory

by Li Zhijian

Previously, it fails as below: ------------- root@lkp-skl-d01 /opt/rootfs/v5.14-rc4/tools/testing/selftests/bpf# ./test_doc_build.sh ++ realpath --relative-to=/opt/rootfs/v5.14-rc4/tools/testing/selftests/bpf ./test_doc_build.sh + SCRIPT_REL_PATH=test_doc_build.sh ++ dirname test_doc_build.sh + SCRIPT_REL_DIR=. ++ realpath /opt/rootfs/v5.14-rc4/tools/testing/selftests/bpf/./../../../../ + KDIR_ROOT_DIR=/opt/rootfs/v5.14-rc4 + cd /opt/rootfs/v5.14-rc4 + for tgt in docs docs-clean + make -s -C /opt/rootfs/v5.14-rc4/. docs make: *** No rule to make target 'docs'. Stop. + for tgt in docs docs-clean + make -s -C /opt/rootfs/v5.14-rc4/. docs-clean make: *** No rule to make target 'docs-clean'. Stop. ----------- Reported-by: kernel test robot <lkp(a)intel.com> Signed-off-by: Li Zhijian <lizhijian(a)cn.fujitsu.com> --- tools/testing/selftests/bpf/test_doc_build.sh | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/bpf/test_doc_build.sh b/tools/testing/selftests/bpf/test_doc_build.sh index ed12111cd2f0..d67ced95a6cf 100755 --- a/tools/testing/selftests/bpf/test_doc_build.sh +++ b/tools/testing/selftests/bpf/test_doc_build.sh @@ -4,9 +4,10 @@ set -e # Assume script is located under tools/testing/selftests/bpf/. We want to start # build attempts from the top of kernel repository. -SCRIPT_REL_PATH=$(realpath --relative-to=$PWD $0) +SCRIPT_REL_PATH=$(realpath $0) SCRIPT_REL_DIR=$(dirname $SCRIPT_REL_PATH) -KDIR_ROOT_DIR=$(realpath $PWD/$SCRIPT_REL_DIR/../../../../) +KDIR_ROOT_DIR=$(realpath $SCRIPT_REL_DIR/../../../../) +SCRIPT_REL_DIR=$(dirname $(realpath --relative-to=$KDIR_ROOT_DIR $SCRIPT_REL_PATH)) cd $KDIR_ROOT_DIR for tgt in docs docs-clean; do -- 2.32.0

3 years, 10 months

3
6
0 0

[PATCH v8 3/5] selftests/ftrace: Add clear_dynamic_events() to test cases

by Steven Rostedt

From: "Steven Rostedt (VMware)" <rostedt(a)goodmis.org> Add a function to remove all dynamic events from the tracing directory. It requires a loop as some of the dynamic events may depend on others being removed first. Also add a safety that prevents it from looping infinitely due to a bug where an event never gets removed. Link: https://lkml.kernel.org/r/20210819041842.696873153@goodmis.org Cc: Shuah Khan <shuah(a)kernel.org> Cc: Shuah Khan <skhan(a)linuxfoundation.org> Cc: linux-kselftest(a)vger.kernel.org Signed-off-by: Steven Rostedt (VMware) <rostedt(a)goodmis.org> --- .../testing/selftests/ftrace/test.d/functions | 22 +++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/tools/testing/selftests/ftrace/test.d/functions b/tools/testing/selftests/ftrace/test.d/functions index a6fac927ee82..f68d336b961b 100644 --- a/tools/testing/selftests/ftrace/test.d/functions +++ b/tools/testing/selftests/ftrace/test.d/functions @@ -83,6 +83,27 @@ clear_synthetic_events() { # reset all current synthetic events done } +clear_dynamic_events() { # reset all current dynamic events + again=1 + stop=1 + # loop mulitple times as some events require other to be removed first + while [ $again -eq 1 ]; do + stop=$((stop+1)) + # Prevent infinite loops + if [ $stop -gt 10 ]; then + break; + fi + again=2 + grep -v '^#' dynamic_events| + while read line; do + del=`echo $line | sed -e 's/^.$[^ ]*$.*/-\1/'` + if ! echo "$del" >> dynamic_events; then + again=1 + fi + done + done +} + initialize_ftrace() { # Reset ftrace to initial-state # As the initial state, ftrace will be set to nop tracer, # no events, no triggers, no filters, no function filters, @@ -93,6 +114,7 @@ initialize_ftrace() { # Reset ftrace to initial-state reset_events_filter reset_ftrace_filter disable_events + clear_dynamic_events [ -f set_event_pid ] && echo > set_event_pid [ -f set_ftrace_pid ] && echo > set_ftrace_pid [ -f set_ftrace_notrace ] && echo > set_ftrace_notrace -- 2.30.2

3 years, 10 months

2
1
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