September 2022 - Linux-kselftest-mirror

[PATCH -next v5 0/4] Optimize and bugfix for memory-hotplug

by Zhao Gongyi

1. Add checking after online or offline 2. Restore memory before exit 3. Adjust log info for maintainability 4. Correct test's name Changes in v5: - Adjust log info for maintainability Changes in v4: - Remove redundant log information Changes in v3: - Remove 2 obselute patches Zhao Gongyi (4): selftests/memory-hotplug: Add checking after online or offline selftests/memory-hotplug: Restore memory before exit selftests/memory-hotplug: Adjust log info for maintainability docs: notifier-error-inject: Correct test's name .../fault-injection/notifier-error-inject.rst | 4 +-- .../memory-hotplug/mem-on-off-test.sh | 34 +++++++++++++++---- 2 files changed, 29 insertions(+), 9 deletions(-) -- 2.17.1

1 year, 7 months

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[PATCH v2] Documentation: Kunit: Use full path to .kunitconfig

by Khalid Masum

The fourth list item on writing test cases instructs adding Kconfig fragments to .kunitconfig, which should have been full path to the file (.kunit/.kunitconfig). Cc: Sadiya Kazi <sadiyakazi(a)google.com> Cc: David Gow <davidgow(a)google.com> Suggested-by: Bagas Sanjaya <bagasdotme(a)gmail.com> Signed-off-by: Khalid Masum <khalid.masum.92(a)gmail.com> --- Changes since v1: - Update commit message - Make the instruction more descriptive Documentation/dev-tools/kunit/start.rst | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/dev-tools/kunit/start.rst b/Documentation/dev-tools/kunit/start.rst index 867a4bba6bf6..69361065cda6 100644 --- a/Documentation/dev-tools/kunit/start.rst +++ b/Documentation/dev-tools/kunit/start.rst @@ -217,7 +217,7 @@ Now we are ready to write the test cases. obj-$(CONFIG_MISC_EXAMPLE_TEST) += example_test.o -4. Add the following lines to ``.kunitconfig``: +4. Add following configuration fragments to ``.kunit/.kunitconfig``: .. code-block:: none -- 2.37.3

1 year, 7 months

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[PATCH v5 net-next 0/6] Extend locked port feature with FDB locked flag (MAC-Auth/MAB)

by Hans Schultz

This patch set extends the locked port feature for devices that are behind a locked port, but do not have the ability to authorize themselves as a supplicant using IEEE 802.1X. Such devices can be printers, meters or anything related to fixed installations. Instead of 802.1X authorization, devices can get access based on their MAC addresses being whitelisted. For an authorization daemon to detect that a device is trying to get access through a locked port, the bridge will add the MAC address of the device to the FDB with a locked flag to it. Thus the authorization daemon can catch the FDB add event and check if the MAC address is in the whitelist and if so replace the FDB entry without the locked flag enabled, and thus open the port for the device. This feature is known as MAC-Auth or MAC Authentication Bypass (MAB) in Cisco terminology, where the full MAB concept involves additional Cisco infrastructure for authorization. There is no real authentication process, as the MAC address of the device is the only input the authorization daemon, in the general case, has to base the decision if to unlock the port or not. With this patch set, an implementation of the offloaded case is supplied for the mv88e6xxx driver. When a packet ingresses on a locked port, an ATU miss violation event will occur. When handling such ATU miss violation interrupts, the MAC address of the device is added to the FDB with a zero destination port vector (DPV) and the MAC address is communicated through the switchdev layer to the bridge, so that a FDB entry with the locked flag enabled can be added. Log: v3: Added timers and lists in the driver (mv88e6xxx) to keep track of and remove locked entries. v4: Leave out enforcing a limit to the number of locked entries in the bridge. Removed the timers in the driver and use the worker only. Add locked FDB flag to all drivers using port_fdb_add() from the dsa api and let all drivers ignore entries with this flag set. Change how to get the ageing timeout of locked entries. See global1_atu.c and switchdev.c. Use struct mv88e6xxx_port for locked entries variables instead of struct dsa_port. v5: Added 'mab' flag to enable MAB/MacAuth feature, in a similar way to the locked feature flag. In these implementations for the mv88e6xxx, the switchport must be configured with learning on. To tell userspace about the behavior of the locked entries in the driver, a 'blackhole' FDB flag has been added, which locked FDB entries coming from the driver gets. Also the 'sticky' flag comes with those locked entries, as the drivers locked entries cannot roam. Fixed issues with taking mutex locks, and added a function to read the fid, that supports all versions of the chipset family. Hans Schultz (6): net: bridge: add locked entry fdb flag to extend locked port feature net: switchdev: add support for offloading of fdb locked flag drivers: net: dsa: add locked fdb entry flag to drivers net: dsa: mv88e6xxx: allow reading FID when handling ATU violations net: dsa: mv88e6xxx: MacAuth/MAB implementation selftests: forwarding: add test of MAC-Auth Bypass to locked port tests drivers/net/dsa/b53/b53_common.c | 5 + drivers/net/dsa/b53/b53_priv.h | 1 + drivers/net/dsa/hirschmann/hellcreek.c | 5 + drivers/net/dsa/lan9303-core.c | 5 + drivers/net/dsa/lantiq_gswip.c | 5 + drivers/net/dsa/microchip/ksz_common.c | 5 + drivers/net/dsa/mt7530.c | 5 + drivers/net/dsa/mv88e6xxx/Makefile | 1 + drivers/net/dsa/mv88e6xxx/chip.c | 81 ++++- drivers/net/dsa/mv88e6xxx/chip.h | 19 ++ drivers/net/dsa/mv88e6xxx/global1.h | 1 + drivers/net/dsa/mv88e6xxx/global1_atu.c | 76 ++++- drivers/net/dsa/mv88e6xxx/port.c | 15 +- drivers/net/dsa/mv88e6xxx/port.h | 6 + drivers/net/dsa/mv88e6xxx/switchdev.c | 285 ++++++++++++++++++ drivers/net/dsa/mv88e6xxx/switchdev.h | 37 +++ drivers/net/dsa/ocelot/felix.c | 5 + drivers/net/dsa/qca/qca8k-common.c | 5 + drivers/net/dsa/qca/qca8k.h | 1 + drivers/net/dsa/sja1105/sja1105_main.c | 7 +- include/linux/if_bridge.h | 1 + include/net/dsa.h | 1 + include/net/switchdev.h | 3 + include/uapi/linux/if_link.h | 1 + include/uapi/linux/neighbour.h | 4 +- net/bridge/br.c | 5 +- net/bridge/br_fdb.c | 43 ++- net/bridge/br_input.c | 16 +- net/bridge/br_netlink.c | 9 +- net/bridge/br_private.h | 7 +- net/bridge/br_switchdev.c | 5 +- net/dsa/dsa_priv.h | 4 +- net/dsa/port.c | 7 +- net/dsa/slave.c | 4 +- net/dsa/switch.c | 10 +- .../net/forwarding/bridge_locked_port.sh | 107 ++++++- .../net/forwarding/bridge_sticky_fdb.sh | 21 +- 37 files changed, 768 insertions(+), 50 deletions(-) create mode 100644 drivers/net/dsa/mv88e6xxx/switchdev.c create mode 100644 drivers/net/dsa/mv88e6xxx/switchdev.h -- 2.30.2

1 year, 7 months

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[PATCH v1 0/3] kselftest/arm64: fp-stress updates

by Mark Brown

A few small updates for fp-stress, improving the usability with signal handling a bit. Mark Brown (3): kselftest/arm64: Don't repeat termination handler for fp-stress kselftest/arm64: Flag fp-stress as exiting when we begin finishing up kselftest/arm64: Handle EINTR while reading data from children tools/testing/selftests/arm64/fp/fp-stress.c | 90 ++++++++++++-------- 1 file changed, 55 insertions(+), 35 deletions(-) base-commit: ea84edbf08025e592f58b0d9b282777a9ca9fb22 -- 2.30.2

1 year, 7 months

2
4
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[PATCH] kselftest/arm64: Don't enable v8.5 for MTE selftest builds

by Mark Brown

Currently we set -march=armv8.5+memtag when building the MTE selftests, allowing the compiler to emit v8.5 and MTE instructions for anything it generates. This means that we may get code that will generate SIGILLs when run on older systems rather than skipping on non-MTE systems as should be the case. Most toolchains don't select any incompatible instructions but I have seen some reports which suggest that some may be appearing which do so. This is also potentially problematic in that if the compiler chooses to emit any MTE instructions for the C code it may interfere with the MTE usage we are trying to test. Since the only reason we are specifying this option is to allow us to assemble MTE instructions in mte_helper.S we can avoid these issues by moving to using a .arch directive there and adding the -march explicitly to the toolchain support check instead of the generic CFLAGS. Signed-off-by: Mark Brown <broonie(a)kernel.org> --- tools/testing/selftests/arm64/mte/Makefile | 5 +---- tools/testing/selftests/arm64/mte/mte_helper.S | 2 ++ 2 files changed, 3 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/arm64/mte/Makefile b/tools/testing/selftests/arm64/mte/Makefile index a5a0744423d8..037046f5784e 100644 --- a/tools/testing/selftests/arm64/mte/Makefile +++ b/tools/testing/selftests/arm64/mte/Makefile @@ -11,11 +11,8 @@ LDFLAGS += -pthread SRCS := $(filter-out mte_common_util.c,$(wildcard *.c)) PROGS := $(patsubst %.c,%,$(SRCS)) -#Add mte compiler option -CFLAGS += -march=armv8.5-a+memtag - #check if the compiler works well -mte_cc_support := $(shell if ($(CC) $(CFLAGS) -E -x c /dev/null -o /dev/null 2>&1) then echo "1"; fi) +mte_cc_support := $(shell if ($(CC) $(CFLAGS) -march=armv8.5-a+memtag -E -x c /dev/null -o /dev/null 2>&1) then echo "1"; fi) ifeq ($(mte_cc_support),1) # Generated binaries to be installed by top KSFT script diff --git a/tools/testing/selftests/arm64/mte/mte_helper.S b/tools/testing/selftests/arm64/mte/mte_helper.S index a02c04cd0aac..a55dbbc56ed1 100644 --- a/tools/testing/selftests/arm64/mte/mte_helper.S +++ b/tools/testing/selftests/arm64/mte/mte_helper.S @@ -3,6 +3,8 @@ #include "mte_def.h" +.arch armv8.5-a+memtag + #define ENTRY(name) \ .globl name ;\ .p2align 2;\ -- 2.30.2

1 year, 7 months

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[PATCH v6 net-next 9/9] selftests: forwarding: add test of MAC-Auth Bypass to locked port tests

by Hans Schultz

From: "Hans J. Schultz" <netdev(a)kapio-technology.com> Verify that the MAC-Auth mechanism works by adding a FDB entry with the locked flag set, denying access until the FDB entry is replaced with a FDB entry without the locked flag set. Add test of blackhole fdb entries, verifying that there is no forwarding to a blackhole entry from any port, and that the blackhole entry can be replaced. Also add a test that verifies that sticky FDB entries cannot roam (this is not needed for now, but should in general be present anyhow for future applications). Signed-off-by: Hans J. Schultz <netdev(a)kapio-technology.com> --- .../net/forwarding/bridge_blackhole_fdb.sh | 102 +++++++++++++++++ .../net/forwarding/bridge_locked_port.sh | 106 +++++++++++++++++- .../net/forwarding/bridge_sticky_fdb.sh | 21 +++- tools/testing/selftests/net/forwarding/lib.sh | 18 +++ 4 files changed, 245 insertions(+), 2 deletions(-) create mode 100755 tools/testing/selftests/net/forwarding/bridge_blackhole_fdb.sh diff --git a/tools/testing/selftests/net/forwarding/bridge_blackhole_fdb.sh b/tools/testing/selftests/net/forwarding/bridge_blackhole_fdb.sh new file mode 100755 index 000000000000..54b1a51e1ed6 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/bridge_blackhole_fdb.sh @@ -0,0 +1,102 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +ALL_TESTS="blackhole_fdb" +NUM_NETIFS=4 +source lib.sh + +switch_create() +{ + ip link add dev br0 type bridge + + ip link set dev $swp1 master br0 + ip link set dev $swp2 master br0 + + ip link set dev br0 up + ip link set dev $h1 up + ip link set dev $swp1 up + ip link set dev $h2 up + ip link set dev $swp2 up + + tc qdisc add dev $swp2 clsact +} + +switch_destroy() +{ + tc qdisc del dev $swp2 clsact + + ip link set dev $swp2 down + ip link set dev $h2 down + ip link set dev $swp1 down + ip link set dev $h1 down + + ip link del dev br0 +} + +setup_prepare() +{ + h1=${NETIFS[p1]} + swp1=${NETIFS[p2]} + h2=${NETIFS[p3]} + swp2=${NETIFS[p4]} + + switch_create +} + +cleanup() +{ + pre_cleanup + switch_destroy +} + +# Check that there is no egress with blackhole entry and that blackhole entries can be replaced +blackhole_fdb() +{ + RET=0 + + check_blackhole_fdb_support || return 0 + + tc filter add dev $swp2 egress protocol ip pref 1 handle 1 flower \ + dst_ip 192.0.2.2 ip_proto udp dst_port 12345 action pass + + $MZ $h1 -c 1 -p 128 -t udp "sp=54321,dp=12345" \ + -a own -b `mac_get $h2` -A 192.0.2.1 -B 192.0.2.2 -q + + tc_check_packets "dev $swp2 egress" 1 1 + check_err $? "Packet not seen on egress before adding blackhole entry" + + bridge fdb add `mac_get $h2` dev br0 blackhole + bridge fdb get `mac_get $h2` br br0 | grep -q blackhole + check_err $? "Blackhole entry not found" + + $MZ $h1 -c 1 -p 128 -t udp "sp=54321,dp=12345" \ + -a own -b `mac_get $h2` -A 192.0.2.1 -B 192.0.2.2 -q + + tc_check_packets "dev $swp2 egress" 1 1 + check_err $? "Packet seen on egress after adding blackhole entry" + + # Check blackhole entries can be replaced. + bridge fdb replace `mac_get $h2` dev $swp2 master static + bridge fdb get `mac_get $h2` br br0 | grep -q blackhole + check_fail $? "Blackhole entry found after replacement" + + $MZ $h1 -c 1 -p 128 -t udp "sp=54321,dp=12345" \ + -a own -b `mac_get $h2` -A 192.0.2.1 -B 192.0.2.2 -q + + tc_check_packets "dev $swp2 egress" 1 2 + check_err $? "Packet not seen on egress after replacing blackhole entry" + + bridge fdb del `mac_get $h2` dev $swp2 master static + tc filter del dev $swp2 egress protocol ip pref 1 handle 1 flower + + log_test "Blackhole FDB entry" +} + +trap cleanup EXIT + +setup_prepare +setup_wait + +tests_run + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/net/forwarding/bridge_locked_port.sh b/tools/testing/selftests/net/forwarding/bridge_locked_port.sh index 5b02b6b60ce7..59b8b7666eab 100755 --- a/tools/testing/selftests/net/forwarding/bridge_locked_port.sh +++ b/tools/testing/selftests/net/forwarding/bridge_locked_port.sh @@ -1,7 +1,15 @@ #!/bin/bash # SPDX-License-Identifier: GPL-2.0 -ALL_TESTS="locked_port_ipv4 locked_port_ipv6 locked_port_vlan" +ALL_TESTS=" + locked_port_ipv4 + locked_port_ipv6 + locked_port_vlan + locked_port_mab + locked_port_station_move + locked_port_mab_station_move +" + NUM_NETIFS=4 CHECK_TC="no" source lib.sh @@ -166,6 +174,102 @@ locked_port_ipv6() log_test "Locked port ipv6" } +locked_port_mab() +{ + RET=0 + check_locked_port_support || return 0 + + ping_do $h1 192.0.2.2 + check_err $? "MAB: Ping did not work before locking port" + + bridge link set dev $swp1 locked on + check_port_mab_support $swp1 || return 0 + + ping_do $h1 192.0.2.2 + check_fail $? "MAB: Ping worked on locked port without FDB entry" + + bridge fdb show | grep `mac_get $h1` | grep -q "locked" + check_err $? "MAB: No locked fdb entry after ping on locked port" + + bridge fdb replace `mac_get $h1` dev $swp1 master static + + ping_do $h1 192.0.2.2 + check_err $? "MAB: Ping did not work with fdb entry without locked flag" + + bridge fdb del `mac_get $h1` dev $swp1 master + bridge link set dev $swp1 locked off mab off + + log_test "Locked port MAB" +} + +# No roaming allowed to a simple locked port +locked_port_station_move() +{ + local mac=a0:b0:c0:c0:b0:a0 + + RET=0 + check_locked_port_support || return 0 + + bridge link set dev $swp1 locked on + + $MZ $h1 -q -t udp -a $mac -b rand + bridge fdb show dev $swp1 | grep "$mac vlan 1" | grep -q "master br0" + check_fail $? "Locked port station move: FDB entry on first injection" + + $MZ $h2 -q -t udp -a $mac -b rand + bridge fdb show dev $swp2 | grep "$mac vlan 1" | grep -q "master br0" + check_err $? "Locked port station move: Entry not found on unlocked port" + + $MZ $h1 -q -t udp -a $mac -b rand + bridge fdb show dev $swp1 | grep "$mac vlan 1" | grep -q "master br0" + check_fail $? "Locked port station move: entry roamed to locked port" + + bridge link set dev $swp1 locked off + + log_test "Locked port station move" +} + +# Roaming to and from a MAB enabled port should work if sticky flag is not set +locked_port_mab_station_move() +{ + local mac=10:20:30:30:20:10 + + RET=0 + check_locked_port_support || return 0 + + bridge link set dev $swp1 locked on + + check_port_mab_support $swp1 || return 0 + + $MZ $h1 -q -t udp -a $mac -b rand + if bridge fdb show dev $swp1 | grep "$mac vlan 1" | grep -q "permanent"; then + echo "SKIP: Roaming not possible with local flag, skipping test..." + bridge link set dev $swp1 locked off mab off + return $ksft_skip + fi + + bridge fdb show dev $swp1 | grep "$mac vlan 1" | grep -q "locked" + check_err $? "MAB station move: no locked entry on first injection" + + $MZ $h2 -q -t udp -a $mac -b rand + bridge fdb show dev $swp1 | grep "$mac vlan 1" | grep -q "locked" + check_fail $? "MAB station move: locked entry did not move" + + bridge fdb show dev $swp2 | grep "$mac vlan 1" | grep -q "locked" + check_fail $? "MAB station move: roamed entry to unlocked port had locked flag on" + + bridge fdb show dev $swp2 | grep "$mac vlan 1" | grep -q "master br0" + check_err $? "MAB station move: roamed entry not found" + + $MZ $h1 -q -t udp -a $mac -b rand + bridge fdb show dev $swp1 | grep "$mac vlan 1" | grep "master br0" | grep -q "locked" + check_fail $? "MAB station move: entry roamed back to locked port" + + bridge link set dev $swp1 locked off mab off + + log_test "Locked port MAB station move" +} + trap cleanup EXIT setup_prepare diff --git a/tools/testing/selftests/net/forwarding/bridge_sticky_fdb.sh b/tools/testing/selftests/net/forwarding/bridge_sticky_fdb.sh index 1f8ef0eff862..bca77bc3fe09 100755 --- a/tools/testing/selftests/net/forwarding/bridge_sticky_fdb.sh +++ b/tools/testing/selftests/net/forwarding/bridge_sticky_fdb.sh @@ -1,7 +1,7 @@ #!/bin/bash # SPDX-License-Identifier: GPL-2.0 -ALL_TESTS="sticky" +ALL_TESTS="sticky sticky_no_roaming" NUM_NETIFS=4 TEST_MAC=de:ad:be:ef:13:37 source lib.sh @@ -59,6 +59,25 @@ sticky() log_test "Sticky fdb entry" } +# No roaming allowed with the sticky flag set +sticky_no_roaming() +{ + local mac=a8:b4:c2:c2:b4:a8 + + RET=0 + + bridge link set dev $swp2 learning on + bridge fdb add $mac dev $swp1 master static sticky + bridge fdb show dev $swp1 | grep "$mac master br0" | grep -q sticky + check_err $? "Sticky no roaming: No sticky FDB entry found after adding" + + $MZ $h2 -q -t udp -c 10 -d 100msec -a $mac -b rand + bridge fdb show dev $swp2 | grep "$mac master br0" | grep -q sticky + check_fail $? "Sticky no roaming: Sticky entry roamed" + + log_test "Sticky no roaming" +} + trap cleanup EXIT setup_prepare diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh index 3ffb9d6c0950..642fbf217c20 100755 --- a/tools/testing/selftests/net/forwarding/lib.sh +++ b/tools/testing/selftests/net/forwarding/lib.sh @@ -137,6 +137,24 @@ check_locked_port_support() fi } +check_port_mab_support() +{ + local dev=$1; + + if ! bridge link set dev $dev mab on 2>/dev/null; then + echo "SKIP: iproute2 too old; MacAuth feature not supported." + return $ksft_skip + fi +} + +check_blackhole_fdb_support() +{ + if ! bridge fdb help | grep -q "blackhole"; then + echo "SKIP: Blackhole fdb feature not supported." + return $ksft_skip + fi +} + if [[ "$(id -u)" -ne 0 ]]; then echo "SKIP: need root privileges" exit $ksft_skip -- 2.34.1

1 year, 7 months

3
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selftest: arm64: missing install files

by Naresh Kamboju

While running kselftest arm64 tests the following list of tests were missing which means those test binaries not installed on to the rootfs. Not a part of "make install" do we need to fix Makefiles ? or am I missing something on the build machine ? We are building on the one machine and testing on multiple arm64 target devices. Please refer to build log [1] and test log [2]. # selftests: arm64: fp-stress # Warning: file fp-stress is missing! # selftests: arm64: sve-ptrace # Warning: file sve-ptrace is missing! # selftests: arm64: vec-syscfg # Warning: file vec-syscfg is missing! # selftests: arm64: za-ptrace # Warning: file za-ptrace is missing! # selftests: arm64: hwcap # Warning: file hwcap is missing! # selftests: arm64: ptrace # Warning: file ptrace is missing! # selftests: arm64: syscall-abi # Warning: file syscall-abi is missing! Reported-by: Linux Kernel Functional Testing <lkft(a)linaro.org> [1] Build log: click on log.do_compile file link https://storage.lkft.org/rootfs-kselftest/oe-kirkstone/20220927-202538/juno/ [2] Test log: click on full log file link https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20220923/te… - Naresh

1 year, 7 months

2
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[PATCH 0/5] selftests/resctrl: Some improvements of resctrl selftest

by Shaopeng Tan

Hello, The aim of this patch series is to improve the resctrl selftest. The first three patches clear redundant code. The last two patches are bug fixes. Without the two fixes, some unnecessary processing will be executed and test results will be confusing. There is no behavior change in test themselves. [patch 1] Because the default schemata is 100% , in MBM test it is not necessary to reset schemata by write_schemata(). [patch 2] Delete CMT-related processing in write_schemata() which is not called by CMT. [patch 3] Before exiting each test CMT/CAT/MBM/MBA, clear test result files function cat/cmt/mbm/mba_test_cleanup() are called twice. Delete once. [patch 4] If there is an exception occurs after creating a child process with fork() in the CAT test, kill the child process before terminating the parent process. [patch 5] When a child process is created by fork(), the buffer of the parent process is also copied. Flush the buffer before executing fork(). This patch series is based on Linux v6.0-rc5 Shaopeng Tan (5): selftests/resctrl: Clear unused initalization code in MBM tests selftests/resctrl: Clear unused common codes called by CAT/MBA tests testing/selftests: Remove duplicate codes that clear each test result file selftests/resctrl: Kill the child process before exiting the parent process if an exception occurs selftests/resctrl: Flush stdout file buffer before executing fork() tools/testing/selftests/resctrl/cat_test.c | 17 +++++++++-------- tools/testing/selftests/resctrl/cmt_test.c | 2 -- tools/testing/selftests/resctrl/mba_test.c | 2 -- tools/testing/selftests/resctrl/mbm_test.c | 19 ++++++------------- tools/testing/selftests/resctrl/resctrl_val.c | 1 + tools/testing/selftests/resctrl/resctrlfs.c | 7 +++---- 6 files changed, 19 insertions(+), 29 deletions(-) -- 2.27.0

1 year, 7 months

3
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[PATCH] Documentation: kunit: rewrite writing first test instructions

by Bagas Sanjaya

The wordings of step-by-step instructions on writing the first Kunit test are instructing readers to write codes without knowing what these are about. Rewrite these instructions to include the purpose of written code. While at it, align the code blocks of these contents. Signed-off-by: Bagas Sanjaya <bagasdotme(a)gmail.com> --- This patch is based on Khalid's full path to .kunitconfig patch [1]. [1]: https://lore.kernel.org/linux-doc/20220929085332.4155-1-khalid.masum.92@gma… Documentation/dev-tools/kunit/start.rst | 40 ++++++++++++++----------- 1 file changed, 22 insertions(+), 18 deletions(-) diff --git a/Documentation/dev-tools/kunit/start.rst b/Documentation/dev-tools/kunit/start.rst index 7999874dc4ddb3..9628360947507b 100644 --- a/Documentation/dev-tools/kunit/start.rst +++ b/Documentation/dev-tools/kunit/start.rst @@ -131,17 +131,19 @@ are built-in. Otherwise the module will need to be loaded. Writing Your First Test ======================= -In your kernel repository, let's add some code that we can test. +In your kernel repository, let's add some code that we can test. For this +purpose, we are going to add simple addition driver. -1. Create a file ``drivers/misc/example.h``, which includes: +1. Write the feature that will be tested. First, write the declaration + for ``misc_example_add()`` in ``drivers/misc/example.h``: -.. code-block:: c + .. code-block:: c int misc_example_add(int left, int right); -2. Create a file ``drivers/misc/example.c``, which includes: + Then implement the function in ``drivers/misc/example.c``: -.. code-block:: c + .. code-block:: c #include <linux/errno.h> @@ -152,24 +154,25 @@ In your kernel repository, let's add some code that we can test. return left + right; } -3. Add the following lines to ``drivers/misc/Kconfig``: +3. Add Kconfig menu entry for the feature to ``drivers/misc/Kconfig``: -.. code-block:: kconfig + .. code-block:: kconfig config MISC_EXAMPLE bool "My example" -4. Add the following lines to ``drivers/misc/Makefile``: +4. Add the kbuild goal that will build the feature to + ``drivers/misc/Makefile``: -.. code-block:: make + .. code-block:: make obj-$(CONFIG_MISC_EXAMPLE) += example.o Now we are ready to write the test cases. -1. Add the below test case in ``drivers/misc/example_test.c``: +1. Write the test in ``drivers/misc/example_test.c``: -.. code-block:: c + .. code-block:: c #include <kunit/test.h> #include "example.h" @@ -202,31 +205,32 @@ Now we are ready to write the test cases. }; kunit_test_suite(misc_example_test_suite); -2. Add the following lines to ``drivers/misc/Kconfig``: +2. Add following Kconfig entry for the test to ``drivers/misc/Kconfig``: -.. code-block:: kconfig + .. code-block:: kconfig config MISC_EXAMPLE_TEST tristate "Test for my example" if !KUNIT_ALL_TESTS depends on MISC_EXAMPLE && KUNIT=y default KUNIT_ALL_TESTS -3. Add the following lines to ``drivers/misc/Makefile``: +3. Add kbuild goal of the test to ``drivers/misc/Makefile``: -.. code-block:: make + .. code-block:: make obj-$(CONFIG_MISC_EXAMPLE_TEST) += example_test.o -4. Add following configuration fragments to ``.kunit/.kunitconfig``: +4. Add following configuration fragments for the test to + ``.kunit/.kunitconfig``: -.. code-block:: none + .. code-block:: none CONFIG_MISC_EXAMPLE=y CONFIG_MISC_EXAMPLE_TEST=y 5. Run the test: -.. code-block:: bash + .. code-block:: bash ./tools/testing/kunit/kunit.py run -- An old man doll... just what I always wanted! - Clara

1 year, 7 months

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Re: [PATCH -next v4 1/3] selftests/memory-hotplug: Add checking after online or offline

by zhaogongyi

Hi! > > On 29.09.22 09:39, zhaogongyi wrote: > > Hi, > > > > We can not get the EBUSY from " echo 0 > > /sys/devices/system/memory/memoryxxx/online", maybe, redirect the error > ouput to /dev/null is suitable when calling offline_memory_expect_success(): > > > > # sh mem-on-off-test.sh -a > > mem-on-off-test.sh: illegal option -- a Test scope: 2% hotplug memory > > online all hot-pluggable memory in offline state: > > SKIPPED - no hot-pluggable memory in offline state > > offline 2% hot-pluggable memory in online state > > trying to offline 4 out of 192 memory block(s): > > online->offline memory0 > > online->offline memory10 > > online->offline memory100 > > online->offline memory101 > > online->offline memory102 > > online->offline memory103 > > online->offline memory104 > > online->offline memory105 > > online->offline memory106 > > online->offline memory107 > > online->offline memory108 > > online->offline memory109 > > online->offline memory11 > > online->offline memory110 > > online->offline memory111 > > online->offline memory112 > > online->offline memory113 > > online->offline memory114 > > online->offline memory115 > > online->offline memory116 > > online->offline memory117 > > online->offline memory118 > > online->offline memory119 > > online->offline memory12 > > online->offline memory120 > > online->offline memory121 > > online->offline memory122 > > online->offline memory123 > > online->offline memory124 > > Can we have here an output like > > online->offline memory0 > -> Failure > online->offline memory10 > -> Success > > That would make much more sense for debugging purposes and understanding > what is happening here. I was primarily concerned about the misleading error > message, that indicated that something is "unexpected" -- it's perfectly > reasonable here to *expect* that offlining a random memory blocks just fails. Yes, I will submit a new version of patches to implement it as your suggestiones: 1. Redirect misleading msg to /dev/null 2. Add an output for online->offline test Thanks! > > -- > Thanks, > > David / dhildenb

1 year, 7 months

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Linux-kselftest-mirror September 2022