From: SeongJae Park <sjpark(a)amazon.de>
When running a test program, 'run_one()' checks if the program has the
execution permission and fails if it doesn't. However, it's easy to
mistakenly missing the permission, as some common tools like 'diff'
don't support the permission change well. Compared to that, making
mistakes in the test program's path would only rare, as those are
explicitly listed in 'TEST_PROGS'. Therefore, it might make more sense
to resolve the situation on our own and run the program.
For the reason, this commit makes the test program runner function to
still print the warning message but try parsing the interpreter of the
program and explicitly run it with the interpreter, in the case.
Suggested-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
Signed-off-by: SeongJae Park <sjpark(a)amazon.de>
Changes from v1
- Parse and use the interpreter instead of changing the file
tools/testing/selftests/kselftest/runner.sh | 28 +++++++++++++--------
1 file changed, 18 insertions(+), 10 deletions(-)
diff --git a/tools/testing/selftests/kselftest/runner.sh b/tools/testing/selftests/kselftest/runner.sh
index cc9c846585f0..a9ba782d8ca0 100644
@@ -33,9 +33,9 @@ tap_timeout()
# Make sure tests will time out if utility is available.
if [ -x /usr/bin/timeout ] ; then
- /usr/bin/timeout --foreground "$kselftest_timeout" "$1"
+ /usr/bin/timeout --foreground "$kselftest_timeout" $1
@@ -65,17 +65,25 @@ run_one()
TEST_HDR_MSG="selftests: $DIR: $BASENAME_TEST"
echo "# $TEST_HDR_MSG"
- if [ ! -x "$TEST" ]; then
- echo -n "# Warning: file $TEST is "
- if [ ! -e "$TEST" ]; then
- echo "missing!"
- echo "not executable, correct this."
+ if [ ! -e "$TEST" ]; then
+ echo "# Warning: file $TEST is missing!"
echo "not ok $test_num $TEST_HDR_MSG"
+ if [ ! -x "$TEST" ]; then
+ echo "# Warning: file $TEST is not executable"
+ if [ $(head -n 1 "$TEST" | cut -c -2) = "#!" ]
+ interpreter=$(head -n 1 "$TEST" | cut -c 3-)
+ cmd="$interpreter ./$BASENAME_TEST"
+ echo "not ok $test_num $TEST_HDR_MSG"
cd `dirname $TEST` > /dev/null
- ((((( tap_timeout ./$BASENAME_TEST 2>&1; echo $? >&3) |
+ ((((( tap_timeout "$cmd" 2>&1; echo $? >&3) |
tap_prefix >&4) 3>&1) |
(read xs; exit $xs)) 4>>"$logfile" &&
echo "ok $test_num $TEST_HDR_MSG") ||
Real-time setups try hard to ensure proper isolation between time
critical applications and e.g. network processing performed by the
network stack in softirq and RPS is used to move the softirq
activity away from the isolated core.
If the network configuration is dynamic, with netns and devices
routinely created at run-time, enforcing the correct RPS setting
on each newly created device allowing to transient bad configuration
These series try to address the above, introducing a new
sysctl knob: rps_default_mask. The new sysctl entry allows
configuring a systemwide RPS mask, to be enforced since receive
queue creation time without any fourther per device configuration
Additionally, a simple self-test is introduced to check the
v1 -> v2:
- fix sparse warning in patch 2/3
Paolo Abeni (3):
net/sysctl: factor-out netdev_rx_queue_set_rps_mask() helper
net/core: introduce default_rps_mask netns attribute
self-tests: introduce self-tests for RPS default mask
Documentation/admin-guide/sysctl/net.rst | 6 ++
include/linux/netdevice.h | 1 +
net/core/net-sysfs.c | 73 +++++++++++--------
net/core/sysctl_net_core.c | 58 +++++++++++++++
tools/testing/selftests/net/Makefile | 1 +
tools/testing/selftests/net/config | 3 +
.../testing/selftests/net/rps_default_mask.sh | 57 +++++++++++++++
7 files changed, 169 insertions(+), 30 deletions(-)
create mode 100755 tools/testing/selftests/net/rps_default_mask.sh
From: Vincent Cheng <vincent.cheng.xh(a)renesas.com>
This series adds adjust phase to the PTP Hardware Clock device interface.
Some PTP hardware clocks have a write phase mode that has
a built-in hardware filtering capability. The write phase mode
utilizes a phase offset control word instead of a frequency offset
control word. Add adjust phase function to take advantage of this
Changes since v1:
- As suggested by Richard Cochran:
1. ops->adjphase is new so need to check for non-null function pointer.
2. Kernel coding style uses lower_case_underscores.
3. Use existing PTP clock API for delayed worker.
Vincent Cheng (3):
ptp: Add adjphase function to support phase offset control.
ptp: Add adjust_phase to ptp_clock_caps capability.
ptp: ptp_clockmatrix: Add adjphase() to support PHC write phase mode.
drivers/ptp/ptp_chardev.c | 1 +
drivers/ptp/ptp_clock.c | 3 ++
drivers/ptp/ptp_clockmatrix.c | 92 +++++++++++++++++++++++++++++++++++
drivers/ptp/ptp_clockmatrix.h | 8 ++-
include/linux/ptp_clock_kernel.h | 6 ++-
include/uapi/linux/ptp_clock.h | 4 +-
tools/testing/selftests/ptp/testptp.c | 6 ++-
7 files changed, 114 insertions(+), 6 deletions(-)
Since the RC1 of kernel 5.13, -smp 2 and -smp 4 don't work with a
virtual e5500 QEMU KVM-HV machine anymore. 
I see in the serial console, that the uImage doesn't load. I use the
following QEMU command for booting:
qemu-system-ppc64 -M ppce500 -cpu e5500 -enable-kvm -m 1024 -kernel
uImage -drive format=raw,file=MintPPC32-X5000.img,index=0,if=virtio
-netdev user,id=mynet0 -device virtio-net,netdev=mynet0 -append "rw
root=/dev/vda" -device virtio-vga -device virtio-mouse-pci -device
virtio-keyboard-pci -device pci-ohci,id=newusb -device
usb-audio,bus=newusb.0 -smp 4
The kernels boot without KVM-HV.
Summary for KVM-HV:
-smp 1 -> works
-smp 2 -> doesn't work
-smp 3 -> works
-smp 4 -> doesn't work
I used -smp 4 before the RC1 of kernel 5.13 because my FSL P5040 BookE
machine  has 4 cores.
Does this patch solve this issue? 
This series provides initial support for the ARMv9 Scalable Matrix
Extension (SME). SME takes the approach used for vectors in SVE and
extends this to provide architectural support for matrix operations. A
more detailed overview can be found in .
For the kernel SME can be thought of as a series of features which are
intended to be used together by applications but operate mostly
- The ZA matrix register.
- Streaming mode, in which ZA can be accessed and a subset of SVE
features are available.
- A second vector length, used for streaming mode SVE and ZA and
controlled using a similar interface to that for SVE.
- TPIDR2, a new userspace controllable system register intended for use
by the C library for storing context related to the ZA ABI.
A substantial part of the series is dedicated to refactoring the
existing SVE support so that we don't need to duplicate code for
handling vector lengths and the SVE registers, this involves creating an
array of vector types and making the users take the vector type as a
parameter. I'm not 100% happy with this but wasn't able to come up with
anything better, duplicating code definitely felt like a bad idea so
this felt like the least bad thing. If this approach makes sense to
people it might make sense to split this off into a separate series
and/or merge it while the rest is pending review to try to make things a
little more digestable, the series is very large so it'd probably make
things easier to digest if some of the preparatory refactoring could be
merged before the rest is ready.
One feature of the architecture of particular note is that switching
to and from streaming mode may change the size of and invalidate the
contents of the SVE registers, and when in streaming mode the FFR is not
accessible. This complicates aspects of the ABI like signal handling
This initial implementation is mainly intended to get the ABI in place,
there are several areas which will be worked on going forwards - some of
these will be blockers, others could be handled in followup serieses:
- SME is currently not supported for KVM guests, this will be done as a
followup series. A host system can use SME and run KVM guests but
SME is not available in the guests.
- The KVM host support is done in a very simplistic way, were anyone to
attempt to use it in production there would be performance impacts on
hosts with SME support. As part of this we also add enumeration of
fine grained traps.
- There is not currently ptrace or signal support TPIDR2, this will be
done as a followup series.
- No support is currently provided for scheduler control of SME or SME
applications, given the size of the SME register state the context
switch overhead may be noticable so this may be needed especially for
real time applications. Similar concerns already exist for larger
SVE vector lengths but are amplified for SME, particularly as the
vector length increases.
- There has been no work on optimising the performance of anything the
It is not expected that any systems will be encountered that support SME
but not SVE, SME is an ARMv9 feature and SVE is mandatory for ARMv9.
The code attempts to handle any such systems that are encountered but
this hasn't been tested extensively.
- Fix some typos in the ABI document.
- Print a message when we skip a vector length in the signal tests.
- Add note of earliest toolchain versions with SME to manual encodings
for future reference now that's landed.
- Drop reference to PCS in sme.rst, it's not referenced and one of the
links was broken.
- Encode smstop and smstart as sysregs in the kernel.
- Don't redundantly flush the SVE register state when loading FPSIMD
state with SME enabled for the task, the architecture will do this
- Introduce and use task_get_cur_vl() to get the vector length for the
currently active SVE registers.
- Fix support for !FA64 mode in signal and syscall tests.
- Simplify instruction sequence for ssve_regs signal test.
- Actually include the ZA signal test in the patch set.
- Rebase onto v5.17-rc3.
- Provide a sme-inst.h to collect manual encodings in kselftest.
- Actually do the rebase of fixups from the previous version into
- Remove defensive programming around IS_ENABLED() and FGT in KVM code.
- Fix naming of TPIDR2 FGT register bit.
- Add patches making handling of floating point register bits more
consistent (also sent as separate series).
- Drop now unused enumeration of fine grained traps.
- Rebase onto v5.17-rc1.
- Support interoperation with KVM, SME is disabled for KVM guests with
minimal handling for cleaning up SME state when entering and leaving
- Document and implement that signal handlers are invoked with ZA and
streaming mode disabled.
- Use the RDSVL instruction introduced in EAC2 of the architecture to
obtain the streaming mode vector length during enumeration, ZA state
loading/saving and in test programs.
- Store a pointer to SVCR in fpsimd_last_state and use it in fpsimd_save()
for interoperation with KVM.
- Add a test case sme_trap_no_sm checking that we generate a SIGILL
when using an instruction that requires streaming mode without
- Add basic ZA context form validation to testcases helper library.
- Move signal tests over to validating streaming VL from ZA information.
- Pulled in patch removing ARRAY_SIZE() so that kselftest builds
cleanly and to avoid trivial conflicts.
- Rebase onto v5.16-rc3.
- Reduce indentation when supporting custom triggers for signal tests
as suggested by Catalin.
- Change to specifying a width for all CPU features rather than adding
single bit specific infrastructure.
- Don't require zeroing of non-shared SVE state during syscalls.
- Rebase onto v5.16-rc1.
- Return to disabling TIF_SVE on kernel entry even if we have SME
state, this avoids the need for KVM to handle the case where TIF_SVE
is set on guest entry.
- Add syscall-abi.h to SME updates to syscall-abi, mistakenly omitted
- Rebase onto currently merged SVE and kselftest patches.
- Add support for the FA64 option, introduced in the recently published
EAC1 update to the specification.
- Pull in test program for the syscall ABI previously sent separately
with some revisions and add coverage for the SME ABI.
- Fix checking for options with 1 bit fields in ID_AA64SMFR0_EL1.
- Minor fixes and clarifications to the ABI documentation.
- Rebase onto merged patches.
- Remove an uneeded NULL check in vec_proc_do_default_vl().
- Include patch to factor out utility routines in kselftests written in
- Specify -ffreestanding when building TPIDR2 test.
- Skip FFR rather than predicate registers in sve_flush_live().
- Don't assume a bool is all zeros in sve_flush_live() as per AAPCS.
- Don't redundantly specify a zero index when clearing FFR.
- Fix several issues with !SME and !SVE configurations.
- Preserve TPIDR2 when creating a new thread/process unless
CLONE_SETTLS is set.
- Report traps due to using features in an invalid mode as SIGILL.
- Spell out streaming mode behaviour in SVE ABI documentation more
- Document TPIDR2 in the ABI document.
- Use SMSTART and SMSTOP rather than read/modify/write sequences.
- Rework logic for exiting streaming mode on syscall.
- Don't needlessly initialise SVCR on access trap.
- Always restore SME VL for userspace if SME traps are disabled.
- Only yield to encourage preemption every 128 iterations in za-test,
otherwise do a getpid(), and validate SVCR after syscall.
- Leave streaming mode disabled except when reading the vector length
in za-test, and disable ZA after detecting a mismatch.
- Add SME support to vlset.
- Clarifications and typo fixes in comments.
- Move sme_alloc() forward declaration back a patch.
Mark Brown (40):
arm64: Define CPACR_EL1_FPEN similarly to other floating point
arm64: Always use individual bits in CPACR floating point enables
arm64: cpufeature: Always specify and use a field width for
kselftest/arm64: Remove local ARRAY_SIZE() definitions
kselftest/arm64: signal: Allow tests to be incompatible with features
arm64/sme: Provide ABI documentation for SME
arm64/sme: System register and exception syndrome definitions
arm64/sme: Manually encode SME instructions
arm64/sme: Early CPU setup for SME
arm64/sme: Basic enumeration support
arm64/sme: Identify supported SME vector lengths at boot
arm64/sme: Implement sysctl to set the default vector length
arm64/sme: Implement vector length configuration prctl()s
arm64/sme: Implement support for TPIDR2
arm64/sme: Implement SVCR context switching
arm64/sme: Implement streaming SVE context switching
arm64/sme: Implement ZA context switching
arm64/sme: Implement traps and syscall handling for SME
arm64/sme: Disable ZA and streaming mode when handling signals
arm64/sme: Implement streaming SVE signal handling
arm64/sme: Implement ZA signal handling
arm64/sme: Implement ptrace support for streaming mode SVE registers
arm64/sme: Add ptrace support for ZA
arm64/sme: Disable streaming mode and ZA when flushing CPU state
arm64/sme: Save and restore streaming mode over EFI runtime calls
KVM: arm64: Hide SME system registers from guests
KVM: arm64: Trap SME usage in guest
KVM: arm64: Handle SME host state when running guests
arm64/sme: Provide Kconfig for SME
kselftest/arm64: Add manual encodings for SME instructions
kselftest/arm64: sme: Add SME support to vlset
kselftest/arm64: Add tests for TPIDR2
kselftest/arm64: Extend vector configuration API tests to cover SME
kselftest/arm64: sme: Provide streaming mode SVE stress test
kselftest/arm64: signal: Handle ZA signal context in core code
kselftest/arm64: Add stress test for SME ZA context switching
kselftest/arm64: signal: Add SME signal handling tests
kselftest/arm64: Add streaming SVE to SVE ptrace tests
kselftest/arm64: Add coverage for the ZA ptrace interface
kselftest/arm64: Add SME support to syscall ABI test
Documentation/arm64/elf_hwcaps.rst | 33 +
Documentation/arm64/index.rst | 1 +
Documentation/arm64/sme.rst | 427 +++++++++++++
Documentation/arm64/sve.rst | 70 ++-
arch/arm64/Kconfig | 11 +
arch/arm64/include/asm/cpu.h | 4 +
arch/arm64/include/asm/cpufeature.h | 25 +
arch/arm64/include/asm/el2_setup.h | 64 +-
arch/arm64/include/asm/esr.h | 13 +-
arch/arm64/include/asm/exception.h | 1 +
arch/arm64/include/asm/fpsimd.h | 110 +++-
arch/arm64/include/asm/fpsimdmacros.h | 87 +++
arch/arm64/include/asm/hwcap.h | 8 +
arch/arm64/include/asm/kvm_arm.h | 5 +-
arch/arm64/include/asm/kvm_host.h | 4 +
arch/arm64/include/asm/processor.h | 26 +-
arch/arm64/include/asm/sysreg.h | 71 ++-
arch/arm64/include/asm/thread_info.h | 2 +
arch/arm64/include/uapi/asm/hwcap.h | 8 +
arch/arm64/include/uapi/asm/ptrace.h | 69 ++-
arch/arm64/include/uapi/asm/sigcontext.h | 55 +-
arch/arm64/kernel/cpufeature.c | 273 +++++++--
arch/arm64/kernel/cpuinfo.c | 13 +
arch/arm64/kernel/entry-common.c | 11 +
arch/arm64/kernel/entry-fpsimd.S | 36 ++
arch/arm64/kernel/fpsimd.c | 565 ++++++++++++++++--
arch/arm64/kernel/process.c | 28 +-
arch/arm64/kernel/ptrace.c | 356 +++++++++--
arch/arm64/kernel/signal.c | 188 +++++-
arch/arm64/kernel/syscall.c | 29 +-
arch/arm64/kernel/traps.c | 1 +
arch/arm64/kvm/fpsimd.c | 43 +-
arch/arm64/kvm/hyp/include/hyp/switch.h | 4 +-
arch/arm64/kvm/hyp/nvhe/switch.c | 30 +
arch/arm64/kvm/hyp/vhe/switch.c | 15 +-
arch/arm64/kvm/sys_regs.c | 9 +-
arch/arm64/tools/cpucaps | 2 +
include/uapi/linux/elf.h | 2 +
include/uapi/linux/prctl.h | 9 +
kernel/sys.c | 12 +
tools/testing/selftests/arm64/abi/.gitignore | 1 +
tools/testing/selftests/arm64/abi/Makefile | 9 +-
.../selftests/arm64/abi/syscall-abi-asm.S | 79 ++-
.../testing/selftests/arm64/abi/syscall-abi.c | 205 ++++++-
.../testing/selftests/arm64/abi/syscall-abi.h | 15 +
tools/testing/selftests/arm64/abi/tpidr2.c | 298 +++++++++
tools/testing/selftests/arm64/fp/.gitignore | 4 +
tools/testing/selftests/arm64/fp/Makefile | 12 +-
tools/testing/selftests/arm64/fp/rdvl-sme.c | 14 +
tools/testing/selftests/arm64/fp/rdvl.S | 10 +
tools/testing/selftests/arm64/fp/rdvl.h | 1 +
tools/testing/selftests/arm64/fp/sme-inst.h | 51 ++
tools/testing/selftests/arm64/fp/ssve-stress | 59 ++
tools/testing/selftests/arm64/fp/sve-ptrace.c | 13 +-
tools/testing/selftests/arm64/fp/sve-test.S | 20 +
tools/testing/selftests/arm64/fp/vec-syscfg.c | 10 +
tools/testing/selftests/arm64/fp/vlset.c | 10 +-
tools/testing/selftests/arm64/fp/za-ptrace.c | 354 +++++++++++
tools/testing/selftests/arm64/fp/za-stress | 59 ++
tools/testing/selftests/arm64/fp/za-test.S | 388 ++++++++++++
.../testing/selftests/arm64/signal/.gitignore | 3 +
.../selftests/arm64/signal/test_signals.h | 5 +
.../arm64/signal/test_signals_utils.c | 40 +-
.../arm64/signal/test_signals_utils.h | 2 +
.../testcases/fake_sigreturn_sme_change_vl.c | 92 +++
.../arm64/signal/testcases/sme_trap_no_sm.c | 38 ++
.../signal/testcases/sme_trap_non_streaming.c | 45 ++
.../arm64/signal/testcases/sme_trap_za.c | 36 ++
.../selftests/arm64/signal/testcases/sme_vl.c | 68 +++
.../arm64/signal/testcases/ssve_regs.c | 133 +++++
.../arm64/signal/testcases/testcases.c | 36 ++
.../arm64/signal/testcases/testcases.h | 3 +-
.../arm64/signal/testcases/za_regs.c | 128 ++++
73 files changed, 4711 insertions(+), 250 deletions(-)
create mode 100644 Documentation/arm64/sme.rst
create mode 100644 tools/testing/selftests/arm64/abi/syscall-abi.h
create mode 100644 tools/testing/selftests/arm64/abi/tpidr2.c
create mode 100644 tools/testing/selftests/arm64/fp/rdvl-sme.c
create mode 100644 tools/testing/selftests/arm64/fp/sme-inst.h
create mode 100644 tools/testing/selftests/arm64/fp/ssve-stress
create mode 100644 tools/testing/selftests/arm64/fp/za-ptrace.c
create mode 100644 tools/testing/selftests/arm64/fp/za-stress
create mode 100644 tools/testing/selftests/arm64/fp/za-test.S
create mode 100644 tools/testing/selftests/arm64/signal/testcases/fake_sigreturn_sme_change_vl.c
create mode 100644 tools/testing/selftests/arm64/signal/testcases/sme_trap_no_sm.c
create mode 100644 tools/testing/selftests/arm64/signal/testcases/sme_trap_non_streaming.c
create mode 100644 tools/testing/selftests/arm64/signal/testcases/sme_trap_za.c
create mode 100644 tools/testing/selftests/arm64/signal/testcases/sme_vl.c
create mode 100644 tools/testing/selftests/arm64/signal/testcases/ssve_regs.c
create mode 100644 tools/testing/selftests/arm64/signal/testcases/za_regs.c
On this v9 I've dropped the generic sysfs deadlock fix given Ming Lei
has provided alternative fixes for the zram driver without incurring
a generic lock *and* we don't yet have full assessment of how wide
spread the deadlock case might be in the kernel. A full assessment
effort is still underway using Coccinelle with iteration support,
however that effort will take a bit more time to complete. We can
re-evaluate the value of a generic fix later after the assessment
This series now just adds the test_sysfs selftest and failure injection
support for it on kernfs. The most valuable tests are those which
confirm that once a kernfs active reference is obtained with
kernfs_get_active() the pointers used there are still valid, and so
using sysfs ops *are* safe if we race against module removal. Likewise
it also confirms how module removal will *wait* for these ops to
complete if a kernfs node is already active.
This v9 series also addresses feedback mostly provided by Kees Cook and Greg.
I also made a few changes to the test_sysfs driver to account for changes in
the block layer. I also improved the kernfs failure injection tests with
documentation of how they work and to account for the real expected return
value of a write before the kernfs active reference is obtained. Upstream
commit 8e141f9eb803e ("block: drain file system I/O on del_gendisk") has
revealed that small minor induced delays on del_gendisk() can make a few
writes succeed if the delays used are small. So we clarify the logic of why
writes could either fail or succeed before the kernfs active reference is taken.
These changes also availble on this tree:
* rebased onto linux-next tag next-20211029
* add Reviewed-by tags for the SPDX change, and the drivers which
get the tag for it
* drop the generic sysfs deadlock fix for now as the scope of how
wide spread the issue is still needs to be assessed
* drop the zram patches as they are replaced by Ming Lei's fixes
* drop already merged patches
* try_module_get() docs: enhanced using feedback from Kees Cook. I
extended the documention to make it clear that if proper care is not
taken the use of this routine could crash the kernel.
* kernfs: move failure injection knobs under /sys/kernel/debug/fail_kernfs
as suggested by Kees Cook
* kernfs: rename failure injection file to fault_inject.c as suggested
by Kees Cook
* kernfs: split up documentation of failure injection knobs as
suggested by Kees Cook
* kernfs: move the wait into debug call, and use a simple one liner
may_wait() calls to make the changes much less intrusive and more
readable as suggested by Kees Cook
* kernfs: drop __func__ uses as suggested by Kees Cook
* test_sysfs: use sizeof() instead of open coded 16 as suggested by
* test_sysfs: use sysfs_emit as suggested by Kees Cook
* test_sysfs: drop boiler place license as suggested by Greg KH
* test_sysfs: use depends instead of select as suggested by Kees Cook
* test_sysfs: drop #ifdefery as suggested by Kees Cook
* test_sysfs: clarified that the use of a lock on rmmod which causes
a deadlock is something drivers should avoid, and its why we leave
the test disabled.
* test_sysfs: now that device_add_disk() returns an error, use the
new error return code, otherwise this is going to prevent us from
eventually embracing __must_check() on that call on the block layer.
* test_syfs: testdev_submit_bio() needed to change data types as now
it returns void.
* test_sysfs: enhance kernfs failure injection tests with documenation
and correct the expected return value for writes
Luis Chamberlain (6):
LICENSES: Add the copyleft-next-0.3.1 license
testing: use the copyleft-next-0.3.1 SPDX tag
selftests: add tests_sysfs module
kernfs: add initial failure injection support
test_sysfs: add support to use kernfs failure injection
kernel/module: add documentation for try_module_get()
.../fault-injection/fault-injection.rst | 50 +
LICENSES/dual/copyleft-next-0.3.1 | 237 +++
MAINTAINERS | 9 +-
fs/kernfs/Makefile | 1 +
fs/kernfs/fault_inject.c | 93 ++
fs/kernfs/file.c | 9 +
fs/kernfs/kernfs-internal.h | 70 +
include/linux/kernfs.h | 5 +
include/linux/module.h | 37 +-
lib/Kconfig.debug | 23 +
lib/Makefile | 1 +
lib/test_kmod.c | 12 +-
lib/test_sysctl.c | 12 +-
lib/test_sysfs.c | 913 +++++++++++
tools/testing/selftests/kmod/kmod.sh | 13 +-
tools/testing/selftests/sysctl/sysctl.sh | 12 +-
tools/testing/selftests/sysfs/Makefile | 12 +
tools/testing/selftests/sysfs/config | 5 +
tools/testing/selftests/sysfs/settings | 1 +
tools/testing/selftests/sysfs/sysfs.sh | 1411 +++++++++++++++++
20 files changed, 2878 insertions(+), 48 deletions(-)
create mode 100644 LICENSES/dual/copyleft-next-0.3.1
create mode 100644 fs/kernfs/fault_inject.c
create mode 100644 lib/test_sysfs.c
create mode 100644 tools/testing/selftests/sysfs/Makefile
create mode 100644 tools/testing/selftests/sysfs/config
create mode 100644 tools/testing/selftests/sysfs/settings
create mode 100755 tools/testing/selftests/sysfs/sysfs.sh
Build of kselftests fail if kernel's top most Makefile is used for
running or building kselftests with separate output directory. The
absolute path is needed to reference other files during this kind of
build. Set KBUILD_ABS_SRCTREE to use absolute path during the build. It
fixes the following different types of errors:
make kselftest-all O=/linux_mainline/build
Makefile:1080: ../scripts/Makefile.extrawarn: No such file or directory
make kselftest-all O=build
Makefile:1080: ../scripts/Makefile.extrawarn: No such file or directory
Signed-off-by: Muhammad Usama Anjum <usama.anjum(a)collabora.com>
I've tested this patch on top of next-20220217. The latest next-20220222
have missing patches.
Makefile | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/Makefile b/Makefile
index 86f633c2809ea..62b3eb8a102ab 100644
@@ -1411,10 +1411,10 @@ tools/%: FORCE
PHONY += kselftest
- $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests run_tests
+ $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests KBUILD_ABS_SRCTREE=1 run_tests
- $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests $*
+ $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests KBUILD_ABS_SRCTREE=1 $*
PHONY += kselftest-merge
Commit ddbd60c779b4 ("kunit: use --build_dir=.kunit as default") changed
the default --build_dir, which had the side effect of making
`.kunitconfig` move to `.kunit/.kunitconfig`.
However, the first few lines of kunit/start.rst never got updated, oops.
Fix this by telling people to run kunit.py first, which will
automatically generate the .kunit directory and .kunitconfig file, and
then edit the file manually as desired.
Reported-by: Yifan Yuan <alpc_metic(a)live.com>
Signed-off-by: Daniel Latypov <dlatypov(a)google.com>
v1 -> v2: rebase onto 5.17 (had the kunit docs rewrite)
Documentation/dev-tools/kunit/start.rst | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/Documentation/dev-tools/kunit/start.rst b/Documentation/dev-tools/kunit/start.rst
index ad168d16968f..867a4bba6bf6 100644
@@ -41,13 +41,18 @@ or ``VFAT_FS``. To run ``FAT_KUNIT_TEST``, the ``.kunitconfig`` has:
-1. A good starting point for the ``.kunitconfig``, is the KUnit default
- config. Run the command:
+1. A good starting point for the ``.kunitconfig`` is the KUnit default config.
+ You can generate it by running:
.. code-block:: bash
- cp tools/testing/kunit/configs/default.config .kunitconfig
+ tools/testing/kunit/kunit.py config
+ cat .kunit/.kunitconfig
+.. note ::
+ ``.kunitconfig`` lives in the ``--build_dir`` used by kunit.py, which is
+ ``.kunit`` by default.
.. note ::
You may want to remove CONFIG_KUNIT_ALL_TESTS from the ``.kunitconfig`` as