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The test is only concerned with host MDB entries and not with MDB
entries as a whole. Rename the test to reflect that.
Subsequent patches will add a more general test that will contain the
test cases for host MDB entries and remove the current test.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Pablo Neira Ayuso says:
====================
Netfilter/IPVS updates for net-next
1) Incorrect error check in nft_expr_inner_parse(), from Dan Carpenter.
2) Add DATA_SENT state to SCTP connection tracking helper, from
Sriram Yagnaraman.
3) Consolidate nf_confirm for ipv4 and ipv6, from Florian Westphal.
4) Add bitmask support for ipset, from Vishwanath Pai.
5) Handle icmpv6 redirects as RELATED, from Florian Westphal.
6) Add WARN_ON_ONCE() to impossible case in flowtable datapath,
from Li Qiong.
7) A large batch of IPVS updates to replace timer-based estimators by
kthreads to scale up wrt. CPUs and workload (millions of estimators).
Julian Anastasov says:
This patchset implements stats estimation in kthread context.
It replaces the code that runs on single CPU in timer context every 2
seconds and causing latency splats as shown in reports [1], [2], [3].
The solution targets setups with thousands of IPVS services,
destinations and multi-CPU boxes.
Spread the estimation on multiple (configured) CPUs and multiple
time slots (timer ticks) by using multiple chains organized under RCU
rules. When stats are not needed, it is recommended to use
run_estimation=0 as already implemented before this change.
RCU Locking:
- As stats are now RCU-locked, tot_stats, svc and dest which
hold estimator structures are now always freed from RCU
callback. This ensures RCU grace period after the
ip_vs_stop_estimator() call.
Kthread data:
- every kthread works over its own data structure and all
such structures are attached to array. For now we limit
kthreads depending on the number of CPUs.
- even while there can be a kthread structure, its task
may not be running, eg. before first service is added or
while the sysctl var is set to an empty cpulist or
when run_estimation is set to 0 to disable the estimation.
- the allocated kthread context may grow from 1 to 50
allocated structures for timer ticks which saves memory for
setups with small number of estimators
- a task and its structure may be released if all
estimators are unlinked from its chains, leaving the
slot in the array empty
- every kthread data structure allows limited number
of estimators. Kthread 0 is also used to initially
calculate the max number of estimators to allow in every
chain considering a sub-100 microsecond cond_resched
rate. This number can be from 1 to hundreds.
- kthread 0 has an additional job of optimizing the
adding of estimators: they are first added in
temp list (est_temp_list) and later kthread 0
distributes them to other kthreads. The optimization
is based on the fact that newly added estimator
should be estimated after 2 seconds, so we have the
time to offload the adding to chain from controlling
process to kthread 0.
- to add new estimators we use the last added kthread
context (est_add_ktid). The new estimators are linked to
the chains just before the estimated one, based on add_row.
This ensures their estimation will start after 2 seconds.
If estimators are added in bursts, common case if all
services and dests are initially configured, we may
spread the estimators to more chains and as result,
reducing the initial delay below 2 seconds.
Many thanks to Jiri Wiesner for his valuable comments
and for spending a lot of time reviewing and testing
the changes on different platforms with 48-256 CPUs and
1-8 NUMA nodes under different cpufreq governors.
The new IPVS estimators do not use workqueue infrastructure
because:
- The estimation can take long time when using multiple IPVS rules (eg.
millions estimator structures) and especially when box has multiple
CPUs due to the for_each_possible_cpu usage that expects packets from
any CPU. With est_nice sysctl we have more control how to prioritize the
estimation kthreads compared to other processes/kthreads that have
latency requirements (such as servers). As a benefit, we can see these
kthreads in top and decide if we will need some further control to limit
their CPU usage (max number of structure to estimate per kthread).
- with kthreads we run code that is read-mostly, no write/lock
operations to process the estimators in 2-second intervals.
- work items are one-shot: as estimators are processed every
2 seconds, they need to be re-added every time. This again
loads the timers (add_timer) if we use delayed works, as there are
no kthreads to do the timings.
[1] Report from Yunhong Jiang:
https://lore.kernel.org/netdev/D25792C1-1B89-45DE-9F10-EC350DC04ADC@gmail.com/
[2] https://marc.info/?l=linux-virtual-server&m=159679809118027&w=2
[3] Report from Dust:
https://archive.linuxvirtualserver.org/html/lvs-devel/2020-12/msg00000.html
* git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next:
ipvs: run_estimation should control the kthread tasks
ipvs: add est_cpulist and est_nice sysctl vars
ipvs: use kthreads for stats estimation
ipvs: use u64_stats_t for the per-cpu counters
ipvs: use common functions for stats allocation
ipvs: add rcu protection to stats
netfilter: flowtable: add a 'default' case to flowtable datapath
netfilter: conntrack: set icmpv6 redirects as RELATED
netfilter: ipset: Add support for new bitmask parameter
netfilter: conntrack: merge ipv4+ipv6 confirm functions
netfilter: conntrack: add sctp DATA_SENT state
netfilter: nft_inner: fix IS_ERR() vs NULL check
====================
Link: https://lore.kernel.org/r/20221211101204.1751-1-pablo@netfilter.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fpu updates from Dave Hansen:
"There are two little fixes in here, one to give better XSAVE warnings
and another to address some undefined behavior in offsetof().
There is also a collection of patches to fix some issues with ptrace
and the protection keys register (PKRU). PKRU is a real oddity because
it is exposed in the XSAVE-related ABIs, but it is generally managed
without using XSAVE in the kernel. This fix thankfully came with a
selftest to ward off future regressions.
Summary:
- Clarify XSAVE consistency warnings
- Fix up ptrace interface to protection keys register (PKRU)
- Avoid undefined compiler behavior with TYPE_ALIGN"
* tag 'x86_fpu_for_6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/fpu: Use _Alignof to avoid undefined behavior in TYPE_ALIGN
selftests/vm/pkeys: Add a regression test for setting PKRU through ptrace
x86/fpu: Emulate XRSTOR's behavior if the xfeatures PKRU bit is not set
x86/fpu: Allow PKRU to be (once again) written by ptrace.
x86/fpu: Add a pkru argument to copy_uabi_to_xstate()
x86/fpu: Add a pkru argument to copy_uabi_from_kernel_to_xstate().
x86/fpu: Take task_struct* in copy_sigframe_from_user_to_xstate()
x86/fpu/xstate: Fix XSTATE_WARN_ON() to emit relevant diagnostics
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 tdx updates from Dave Hansen:
"This includes a single chunk of new functionality for TDX guests which
allows them to talk to the trusted TDX module software and obtain an
attestation report.
This report can then be used to prove the trustworthiness of the guest
to a third party and get access to things like storage encryption
keys"
* tag 'x86_tdx_for_6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
selftests/tdx: Test TDX attestation GetReport support
virt: Add TDX guest driver
x86/tdx: Add a wrapper to get TDREPORT0 from the TDX Module
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Pull cxl updates from Dan Williams:
"Compute Express Link (CXL) updates for 6.2.
While it may seem backwards, the CXL update this time around includes
some focus on CXL 1.x enabling where the work to date had been with
CXL 2.0 (VH topologies) in mind.
First generation CXL can mostly be supported via BIOS, similar to DDR,
however it became clear there are use cases for OS native CXL error
handling and some CXL 3.0 endpoint features can be deployed on CXL 1.x
hosts (Restricted CXL Host (RCH) topologies). So, this update brings
RCH topologies into the Linux CXL device model.
In support of the ongoing CXL 2.0+ enabling two new core kernel
facilities are added.
One is the ability for the kernel to flag collisions between userspace
access to PCI configuration registers and kernel accesses. This is
brought on by the PCIe Data-Object-Exchange (DOE) facility, a hardware
mailbox over config-cycles.
The other is a cpu_cache_invalidate_memregion() API that maps to
wbinvd_on_all_cpus() on x86. To prevent abuse it is disabled in guest
VMs and architectures that do not support it yet. The CXL paths that
need it, dynamic memory region creation and security commands (erase /
unlock), are disabled when it is not present.
As for the CXL 2.0+ this cycle the subsystem gains support Persistent
Memory Security commands, error handling in response to PCIe AER
notifications, and support for the "XOR" host bridge interleave
algorithm.
Summary:
- Add the cpu_cache_invalidate_memregion() API for cache flushing in
response to physical memory reconfiguration, or memory-side data
invalidation from operations like secure erase or memory-device
unlock.
- Add a facility for the kernel to warn about collisions between
kernel and userspace access to PCI configuration registers
- Add support for Restricted CXL Host (RCH) topologies (formerly CXL
1.1)
- Add handling and reporting of CXL errors reported via the PCIe AER
mechanism
- Add support for CXL Persistent Memory Security commands
- Add support for the "XOR" algorithm for CXL host bridge interleave
- Rework / simplify CXL to NVDIMM interactions
- Miscellaneous cleanups and fixes"
* tag 'cxl-for-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (71 commits)
cxl/region: Fix memdev reuse check
cxl/pci: Remove endian confusion
cxl/pci: Add some type-safety to the AER trace points
cxl/security: Drop security command ioctl uapi
cxl/mbox: Add variable output size validation for internal commands
cxl/mbox: Enable cxl_mbox_send_cmd() users to validate output size
cxl/security: Fix Get Security State output payload endian handling
cxl: update names for interleave ways conversion macros
cxl: update names for interleave granularity conversion macros
cxl/acpi: Warn about an invalid CHBCR in an existing CHBS entry
tools/testing/cxl: Require cache invalidation bypass
cxl/acpi: Fail decoder add if CXIMS for HBIG is missing
cxl/region: Fix spelling mistake "memergion" -> "memregion"
cxl/regs: Fix sparse warning
cxl/acpi: Set ACPI's CXL _OSC to indicate RCD mode support
tools/testing/cxl: Add an RCH topology
cxl/port: Add RCD endpoint port enumeration
cxl/mem: Move devm_cxl_add_endpoint() from cxl_core to cxl_mem
tools/testing/cxl: Add XOR Math support to cxl_test
cxl/acpi: Support CXL XOR Interleave Math (CXIMS)
...
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and PNP updates from Rafael Wysocki:
"These include new code (for instance, support for the FFH address
space type and support for new firmware data structures in ACPICA),
some new quirks (mostly related to backlight handling and I2C
enumeration), a number of fixes and a fair amount of cleanups all
over.
Specifics:
- Update the ACPICA code in the kernel to the 20221020 upstream
version and fix a couple of issues in it:
- Make acpi_ex_load_op() match upstream implementation (Rafael
Wysocki)
- Add support for loong_arch-specific APICs in MADT (Huacai Chen)
- Add support for fixed PCIe wake event (Huacai Chen)
- Add EBDA pointer sanity checks (Vit Kabele)
- Avoid accessing VGA memory when EBDA < 1KiB (Vit Kabele)
- Add CCEL table support to both compiler/disassembler (Kuppuswamy
Sathyanarayanan)
- Add a couple of new UUIDs to the known UUID list (Bob Moore)
- Add support for FFH Opregion special context data (Sudeep
Holla)
- Improve warning message for "invalid ACPI name" (Bob Moore)
- Add support for CXL 3.0 structures (CXIMS & RDPAS) in the CEDT
table (Alison Schofield)
- Prepare IORT support for revision E.e (Robin Murphy)
- Finish support for the CDAT table (Bob Moore)
- Fix error code path in acpi_ds_call_control_method() (Rafael
Wysocki)
- Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage() (Li
Zetao)
- Update the version of the ACPICA code in the kernel (Bob Moore)
- Use ZERO_PAGE(0) instead of empty_zero_page in the ACPI device
enumeration code (Giulio Benetti)
- Change the return type of the ACPI driver remove callback to void
and update its users accordingly (Dawei Li)
- Add general support for FFH address space type and implement the
low- level part of it for ARM64 (Sudeep Holla)
- Fix stale comments in the ACPI tables parsing code and make it
print more messages related to MADT (Hanjun Guo, Huacai Chen)
- Replace invocations of generic library functions with more kernel-
specific counterparts in the ACPI sysfs interface (Christophe
JAILLET, Xu Panda)
- Print full name paths of ACPI power resource objects during
enumeration (Kane Chen)
- Eliminate a compiler warning regarding a missing function prototype
in the ACPI power management code (Sudeep Holla)
- Fix and clean up the ACPI processor driver (Rafael Wysocki, Li
Zhong, Colin Ian King, Sudeep Holla)
- Add quirk for the HP Pavilion Gaming 15-cx0041ur to the ACPI EC
driver (Mia Kanashi)
- Add some mew ACPI backlight handling quirks and update some
existing ones (Hans de Goede)
- Make the ACPI backlight driver prefer the native backlight control
over vendor backlight control when possible (Hans de Goede)
- Drop unsetting ACPI APEI driver data on remove (Uwe Kleine-König)
- Use xchg_release() instead of cmpxchg() for updating new GHES cache
slots (Ard Biesheuvel)
- Clean up the ACPI APEI code (Sudeep Holla, Christophe JAILLET, Jay
Lu)
- Add new I2C device enumeration quirks for Medion Lifetab S10346 and
Lenovo Yoga Tab 3 Pro (YT3-X90F) (Hans de Goede)
- Make the ACPI battery driver notify user space about adding new
battery hooks and removing the existing ones (Armin Wolf)
- Modify the pfr_update and pfr_telemetry drivers to use ACPI_FREE()
for freeing acpi_object structures to help diagnostics (Wang
ShaoBo)
- Make the ACPI fan driver use sysfs_emit_at() in its sysfs interface
code (ye xingchen)
- Fix the _FIF package extraction failure handling in the ACPI fan
driver (Hanjun Guo)
- Fix the PCC mailbox handling error code path (Huisong Li)
- Avoid using PCC Opregions if there is no platform interrupt
allocated for this purpose (Huisong Li)
- Use sysfs_emit() instead of scnprintf() in the ACPI PAD driver and
CPPC library (ye xingchen)
- Fix some kernel-doc issues in the ACPI GSI processing code
(Xiongfeng Wang)
- Fix name memory leak in pnp_alloc_dev() (Yang Yingliang)
- Do not disable PNP devices on suspend when they cannot be
re-enabled on resume (Hans de Goede)
- Clean up the ACPI thermal driver a bit (Rafael Wysocki)"
* tag 'acpi-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (67 commits)
ACPI: x86: Add skip i2c clients quirk for Medion Lifetab S10346
ACPI: APEI: EINJ: Refactor available_error_type_show()
ACPI: APEI: EINJ: Fix formatting errors
ACPI: processor: perflib: Adjust acpi_processor_notify_smm() return value
ACPI: processor: perflib: Rearrange acpi_processor_notify_smm()
ACPI: processor: perflib: Rearrange unregistration routine
ACPI: processor: perflib: Drop redundant parentheses
ACPI: processor: perflib: Adjust white space
ACPI: processor: idle: Drop unnecessary statements and parens
ACPI: thermal: Adjust critical.flags.valid check
ACPI: fan: Convert to use sysfs_emit_at() API
ACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage()
ACPI: battery: Call power_supply_changed() when adding hooks
ACPI: use sysfs_emit() instead of scnprintf()
ACPI: x86: Add skip i2c clients quirk for Lenovo Yoga Tab 3 Pro (YT3-X90F)
ACPI: APEI: Remove a useless include
PNP: Do not disable devices on suspend when they cannot be re-enabled on resume
ACPI: processor: Silence missing prototype warnings
ACPI: processor_idle: Silence missing prototype warnings
ACPI: PM: Silence missing prototype warning
...
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"These include two new drivers (cpufreq driver for Apple SoC CPU
P-states and the SCMI Powercap based power capping driver), other new
hardware support and driver extensions (Qualcomm cpufreq driver and
its DT bindings, TI cpufreq driver, intel_pstate, intel-uncore-freq),
a bunch of fixes and cleanups all over and a cpupower utility update
including new features related to RAPL support.
Specifics:
- Fix nasty and hard to debug race condition introduced by mistake in
the runtime PM core code and clean up that code somewhat on top of
the fix (Rafael Wysocki)
- Generalize of_perf_domain_get_sharing_cpumask phandle format
(Hector Martin)
- Add new cpufreq driver for Apple SoC CPU P-states (Hector Martin)
- Update Qualcomm cpufreq driver (Manivannan Sadhasivam, Chen Hui):
- CPU clock provider support
- Generic cleanups or reorganization
- Potential memleak fix
- Fix of the return value of cpufreq_driver->get()
- Update Qualcomm cpufreq driver's DT bindings (Manivannan
Sadhasivam, Rob Herring, Melody Olvera):
- Support for CPU clock provider
- Missing cache-related properties fixes
- Support for QDU1000/QRU1000
- Add support for ti,am625 SoC and enable build of ti-cpufreq for
ARCH_K3 (Dave Gerlach, and Vibhore Vardhan)
- Use flexible array to simplify memory allocation in the tegra186
cpufreq driver (Christophe JAILLET)
- Convert cpufreq statistics code to use sysfs_emit_at() (ye
xingchen)
- Allow intel_pstate to use no-HWP mode on Sapphire Rapids (Giovanni
Gherdovich)
- Add missing pci_dev_put() to the amd_freq_sensitivity cpufreq
driver (Xiongfeng Wang)
- Initialize the kobj_unregister completion before calling
kobject_init_and_add() in the cpufreq core code (Yongqiang Liu)
- Defer setting boost MSRs in the ACPI cpufreq driver (Stuart Hayes,
Nathan Chancellor)
- Make intel_pstate accept initial EPP value of 0x80 (Srinivas
Pandruvada)
- Make read-only array sys_clk_src in the SPEAr cpufreq driver static
(Colin Ian King)
- Make array speeds in the longhaul cpufreq driver static (Colin Ian
King)
- Use str_enabled_disabled() helper in the ACPI cpufreq driver (Andy
Shevchenko)
- Drop a reference to CVS from cpufreq documentation (Conghui Wang)
- Improve kernel messages printed by the PSCI cpuidle driver (Ulf
Hansson)
- Make the DT cpuidle driver return the correct number of parsed idle
states, clean it up and clarify a comment in it (Ulf Hansson)
- Modify the tasks freezing code to avoid using pr_cont() and refine
an error message printed by it (Rafael Wysocki)
- Make the hibernation core code complain about memory map mismatches
during resume to help diagnostics (Xueqin Luo)
- Fix mistake in a kerneldoc comment in the hibernation code
(xiongxin)
- Reverse the order of performance and enabling operations in the
generic power domains code (Abel Vesa)
- Power off[on] domains in hibernate .freeze[thaw]_noirq hook of in
the generic power domains code (Abel Vesa)
- Consolidate genpd_restore_noirq() and genpd_resume_noirq() (Shawn
Guo)
- Pass generic PM noirq hooks to genpd_finish_suspend() (Shawn Guo)
- Drop generic power domain status manipulation during hibernate
restore (Shawn Guo)
- Fix compiler warnings with make W=1 in the idle_inject power
capping driver (Srinivas Pandruvada)
- Use kstrtobool() instead of strtobool() in the power capping sysfs
interface (Christophe JAILLET)
- Add SCMI Powercap based power capping driver (Cristian Marussi)
- Add Emerald Rapids support to the intel-uncore-freq driver (Artem
Bityutskiy)
- Repair slips in kernel-doc comments in the generic notifier code
(Lukas Bulwahn)
- Fix several DT issues in the OPP library reorganize code around
opp-microvolt-<named> DT property (Viresh Kumar)
- Allow any of opp-microvolt, opp-microamp, or opp-microwatt
properties to be present without the others present (James
Calligeros)
- Fix clock-latency-ns property in DT example (Serge Semin)
- Add a private governor_data for devfreq governors (Kant Fan)
- Reorganize devfreq code to use device_match_of_node() and
devm_platform_get_and_ioremap_resource() instead of open coding
them (ye xingchen, Minghao Chi)
- Make cpupower choose base_cpu to display default cpupower details
instead of picking CPU 0 (Saket Kumar Bhaskar)
- Add Georgian translation to cpupower documentation (Zurab
Kargareteli)
- Introduce powercap intel-rapl library, powercap-info command, and
RAPL monitor into cpupower (Thomas Renninger)"
* tag 'pm-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (64 commits)
PM: runtime: Adjust white space in the core code
cpufreq: Remove CVS version control contents from documentation
cpufreq: stats: Convert to use sysfs_emit_at() API
cpufreq: ACPI: Only set boost MSRs on supported CPUs
PM: sleep: Refine error message in try_to_freeze_tasks()
PM: sleep: Avoid using pr_cont() in the tasks freezing code
PM: runtime: Relocate rpm_callback() right after __rpm_callback()
PM: runtime: Do not call __rpm_callback() from rpm_idle()
PM / devfreq: event: use devm_platform_get_and_ioremap_resource()
PM / devfreq: event: Use device_match_of_node()
PM / devfreq: Use device_match_of_node()
powercap: idle_inject: Fix warnings with make W=1
PM: hibernate: Complain about memory map mismatches during resume
dt-bindings: cpufreq: cpufreq-qcom-hw: Add QDU1000/QRU1000 cpufreq
cpufreq: tegra186: Use flexible array to simplify memory allocation
cpupower: rapl monitor - shows the used power consumption in uj for each rapl domain
cpupower: Introduce powercap intel-rapl library and powercap-info command
cpupower: Add Georgian translation
cpufreq: intel_pstate: Add Sapphire Rapids support in no-HWP mode
cpufreq: amd_freq_sensitivity: Add missing pci_dev_put()
...
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Currently, kunit_parser.py is stripping all leading whitespace to make
parsing easier. But this means we can't accurately show kernel output
for failing tests or when the kernel crashes.
Embarassingly, this affects even KUnit's own output, e.g.
[13:40:46] Expected 2 + 1 == 2, but
[13:40:46] 2 + 1 == 3 (0x3)
[13:40:46] not ok 1 example_simple_test
[13:40:46] [FAILED] example_simple_test
After this change, here's what the output in context would look like
[13:40:46] =================== example (4 subtests) ===================
[13:40:46] # example_simple_test: initializing
[13:40:46] # example_simple_test: EXPECTATION FAILED at lib/kunit/kunit-example-test.c:29
[13:40:46] Expected 2 + 1 == 2, but
[13:40:46] 2 + 1 == 3 (0x3)
[13:40:46] [FAILED] example_simple_test
[13:40:46] [SKIPPED] example_skip_test
[13:40:46] [SKIPPED] example_mark_skipped_test
[13:40:46] [PASSED] example_all_expect_macros_test
[13:40:46] # example: initializing suite
[13:40:46] # example: pass:1 fail:1 skip:2 total:4
[13:40:46] # Totals: pass:1 fail:1 skip:2 total:4
[13:40:46] ===================== [FAILED] example =====================
This example shows one minor cosmetic defect this approach has.
The test counts lines prevent us from dedenting the suite-level output.
But at the same time, any form of non-KUnit output would do the same
unless it happened to be indented as well.
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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We print the "test log" on failure.
This is meant to be all the kernel output that happened during the test.
But we also include the special KTAP lines in it, which are often
redundant.
E.g. we include the "not ok" line in the log, right before we print
that the test case failed...
[13:51:48] Expected 2 + 1 == 2, but
[13:51:48] 2 + 1 == 3 (0x3)
[13:51:48] not ok 1 example_simple_test
[13:51:48] [FAILED] example_simple_test
More full example after this patch:
[13:51:48] =================== example (4 subtests) ===================
[13:51:48] # example_simple_test: initializing
[13:51:48] # example_simple_test: EXPECTATION FAILED at lib/kunit/kunit-example-test.c:29
[13:51:48] Expected 2 + 1 == 2, but
[13:51:48] 2 + 1 == 3 (0x3)
[13:51:48] [FAILED] example_simple_test
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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Change the KUnit parser to be able to parse test output that complies with
the KTAP version 1 specification format found here:
https://kernel.org/doc/html/latest/dev-tools/ktap.html. Ensure the parser
is able to parse tests with the original KUnit test output format as
well.
KUnit parser now accepts any of the following test output formats:
Original KUnit test output format:
TAP version 14
1..1
# Subtest: kunit-test-suite
1..3
ok 1 - kunit_test_1
ok 2 - kunit_test_2
ok 3 - kunit_test_3
# kunit-test-suite: pass:3 fail:0 skip:0 total:3
# Totals: pass:3 fail:0 skip:0 total:3
ok 1 - kunit-test-suite
KTAP version 1 test output format:
KTAP version 1
1..1
KTAP version 1
1..3
ok 1 kunit_test_1
ok 2 kunit_test_2
ok 3 kunit_test_3
ok 1 kunit-test-suite
New KUnit test output format (changes made in the next patch of
this series):
KTAP version 1
1..1
KTAP version 1
# Subtest: kunit-test-suite
1..3
ok 1 kunit_test_1
ok 2 kunit_test_2
ok 3 kunit_test_3
# kunit-test-suite: pass:3 fail:0 skip:0 total:3
# Totals: pass:3 fail:0 skip:0 total:3
ok 1 kunit-test-suite
Signed-off-by: Rae Moar <rmoar@google.com>
Reviewed-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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When --raw_output is set (to any value), we don't actually parse the
test results. So asking to print the test results as json doesn't make
sense.
We internally create a fake test with one passing subtest, so --json
would actually print out something misleading.
This patch:
* Rewords the flag descriptions so hopefully this is more obvious.
* Also updates --raw_output's description to note the default behavior
is to print out only "KUnit" results (actually any KTAP results)
* also renames and refactors some related logic for clarity (e.g.
test_result => test, it's a kunit_parser.Test object).
Notably, this patch does not make it an error to specify --json and
--raw_output together. This is an edge case, but I know of at least one
wrapper around kunit.py that always sets --json. You'd never be able to
use --raw_output with that wrapper.
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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We currently tell people we "couldn't find any KTAP output" with no
indication as to what this might mean.
After this patch, we get:
$ ./tools/testing/kunit/kunit.py parse /dev/null
============================================================
[ERROR] Test: <missing>: Could not find any KTAP output. Did any KUnit tests run?
============================================================
Testing complete. Ran 0 tests: errors: 1
Note: we could try and generate a more verbose message like
> Please check .kunit/test.log to see the raw kernel output.
or the like, but we'd need to know what the build dir was to know where
test.log actually lives.
This patch tries to make a more minimal improvement.
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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We're using a `with` block above, so the file object is already closed.
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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Let's verify that the parser isn't reporting any errors for valid
inputs.
This change also
* does result.status checking on one line
* makes sure we consistently do it outside of the `with` block
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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Since we're using Python 3.7+, we can use dataclasses to tersen the
code.
It also lets us create pre-populated TestCounts() objects and compare
them in our unit test. (Before, you could only create empty ones).
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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x86 Xen-for-KVM:
* Allow the Xen runstate information to cross a page boundary
* Allow XEN_RUNSTATE_UPDATE flag behaviour to be configured
* add support for 32-bit guests in SCHEDOP_poll
x86 fixes:
* One-off fixes for various emulation flows (SGX, VMXON, NRIPS=0).
* Reinstate IBPB on emulated VM-Exit that was incorrectly dropped a few
years back when eliminating unnecessary barriers when switching between
vmcs01 and vmcs02.
* Clean up the MSR filter docs.
* Clean up vmread_error_trampoline() to make it more obvious that params
must be passed on the stack, even for x86-64.
* Let userspace set all supported bits in MSR_IA32_FEAT_CTL irrespective
of the current guest CPUID.
* Fudge around a race with TSC refinement that results in KVM incorrectly
thinking a guest needs TSC scaling when running on a CPU with a
constant TSC, but no hardware-enumerated TSC frequency.
* Advertise (on AMD) that the SMM_CTL MSR is not supported
* Remove unnecessary exports
Selftests:
* Fix an inverted check in the access tracking perf test, and restore
support for asserting that there aren't too many idle pages when
running on bare metal.
* Fix an ordering issue in the AMX test introduced by recent conversions
to use kvm_cpu_has(), and harden the code to guard against similar bugs
in the future. Anything that tiggers caching of KVM's supported CPUID,
kvm_cpu_has() in this case, effectively hides opt-in XSAVE features if
the caching occurs before the test opts in via prctl().
* Fix build errors that occur in certain setups (unsure exactly what is
unique about the problematic setup) due to glibc overriding
static_assert() to a variant that requires a custom message.
* Introduce actual atomics for clear/set_bit() in selftests
Documentation:
* Remove deleted ioctls from documentation
* Various fixes
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https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Alexei Starovoitov says:
====================
pull-request: bpf-next 2022-12-11
We've added 74 non-merge commits during the last 11 day(s) which contain
a total of 88 files changed, 3362 insertions(+), 789 deletions(-).
The main changes are:
1) Decouple prune and jump points handling in the verifier, from Andrii.
2) Do not rely on ALLOW_ERROR_INJECTION for fmod_ret, from Benjamin.
Merged from hid tree.
3) Do not zero-extend kfunc return values. Necessary fix for 32-bit archs,
from Björn.
4) Don't use rcu_users to refcount in task kfuncs, from David.
5) Three reg_state->id fixes in the verifier, from Eduard.
6) Optimize bpf_mem_alloc by reusing elements from free_by_rcu, from Hou.
7) Refactor dynptr handling in the verifier, from Kumar.
8) Remove the "/sys" mount and umount dance in {open,close}_netns
in bpf selftests, from Martin.
9) Enable sleepable support for cgrp local storage, from Yonghong.
* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (74 commits)
selftests/bpf: test case for relaxed prunning of active_lock.id
selftests/bpf: Add pruning test case for bpf_spin_lock
bpf: use check_ids() for active_lock comparison
selftests/bpf: verify states_equal() maintains idmap across all frames
bpf: states_equal() must build idmap for all function frames
selftests/bpf: test cases for regsafe() bug skipping check_id()
bpf: regsafe() must not skip check_ids()
docs/bpf: Add documentation for BPF_MAP_TYPE_SK_STORAGE
selftests/bpf: Add test for dynptr reinit in user_ringbuf callback
bpf: Use memmove for bpf_dynptr_{read,write}
bpf: Move PTR_TO_STACK alignment check to process_dynptr_func
bpf: Rework check_func_arg_reg_off
bpf: Rework process_dynptr_func
bpf: Propagate errors from process_* checks in check_func_arg
bpf: Refactor ARG_PTR_TO_DYNPTR checks into process_dynptr_func
bpf: Skip rcu_barrier() if rcu_trace_implies_rcu_gp() is true
bpf: Reuse freed element in free_by_rcu during allocation
selftests/bpf: Bring test_offload.py back to life
bpf: Fix comment error in fixup_kfunc_call function
bpf: Do not zero-extend kfunc return values
...
====================
Link: https://lore.kernel.org/r/20221212024701.73809-1-alexei.starovoitov@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver updates from Hans de Goede:
- Intel:
- PMC: Add support for Meteor Lake
- Intel On Demand: various updates
- Ideapad-laptop:
- Add support for various Fn keys on new models
- Fix touchpad on/off handling in a generic way to avoid having to
add more and more quirks
- Android x86 tablets:
- Add support for two more X86 Android tablet models
- New Dell WMI DDV driver
- Miscellaneous cleanups and small bugfixes
* tag 'platform-drivers-x86-v6.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (52 commits)
platform/mellanox: mlxbf-pmc: Fix event typo
platform/x86: intel_scu_ipc: fix possible name leak in __intel_scu_ipc_register()
platform/x86: sony-laptop: Convert to use sysfs_emit_at() API
platform/x86/dell: alienware-wmi: Use sysfs_emit() instead of scnprintf()
platform/x86: uv_sysfs: Use sysfs_emit() instead of scnprintf()
platform/x86: mxm-wmi: fix memleak in mxm_wmi_call_mx[ds|mx]()
platform/x86: x86-android-tablets: Add Advantech MICA-071 extra button
platform/x86: x86-android-tablets: Add Lenovo Yoga Tab 3 (YT3-X90F) charger + fuel-gauge data
platform/x86: x86-android-tablets: Add Medion Lifetab S10346 data
platform/x86: wireless-hotkey: use ACPI HID as phys
platform/x86/intel/hid: Add module-params for 5 button array + SW_TABLET_MODE reporting
platform/x86: ideapad-laptop: Make touchpad_ctrl_via_ec a module option
platform/x86: ideapad-laptop: Stop writing VPCCMD_W_TOUCHPAD at probe time
platform/x86: ideapad-laptop: Send KEY_TOUCHPAD_TOGGLE on some models
platform/x86: ideapad-laptop: Only toggle ps2 aux port on/off on select models
platform/x86: ideapad-laptop: Do not send KEY_TOUCHPAD* events on probe / resume
platform/x86: ideapad-laptop: Refactor ideapad_sync_touchpad_state()
tools/arch/x86: intel_sdsi: Add support for reading meter certificates
tools/arch/x86: intel_sdsi: Add support for new GUID
tools/arch/x86: intel_sdsi: Read more On Demand registers
...
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon:
"The highlights this time are support for dynamically enabling and
disabling Clang's Shadow Call Stack at boot and a long-awaited
optimisation to the way in which we handle the SVE register state on
system call entry to avoid taking unnecessary traps from userspace.
Summary:
ACPI:
- Enable FPDT support for boot-time profiling
- Fix CPU PMU probing to work better with PREEMPT_RT
- Update SMMUv3 MSI DeviceID parsing to latest IORT spec
- APMT support for probing Arm CoreSight PMU devices
CPU features:
- Advertise new SVE instructions (v2.1)
- Advertise range prefetch instruction
- Advertise CSSC ("Common Short Sequence Compression") scalar
instructions, adding things like min, max, abs, popcount
- Enable DIT (Data Independent Timing) when running in the kernel
- More conversion of system register fields over to the generated
header
CPU misfeatures:
- Workaround for Cortex-A715 erratum #2645198
Dynamic SCS:
- Support for dynamic shadow call stacks to allow switching at
runtime between Clang's SCS implementation and the CPU's pointer
authentication feature when it is supported (complete with scary
DWARF parser!)
Tracing and debug:
- Remove static ftrace in favour of, err, dynamic ftrace!
- Seperate 'struct ftrace_regs' from 'struct pt_regs' in core ftrace
and existing arch code
- Introduce and implement FTRACE_WITH_ARGS on arm64 to replace the
old FTRACE_WITH_REGS
- Extend 'crashkernel=' parameter with default value and fallback to
placement above 4G physical if initial (low) allocation fails
SVE:
- Optimisation to avoid disabling SVE unconditionally on syscall
entry and just zeroing the non-shared state on return instead
Exceptions:
- Rework of undefined instruction handling to avoid serialisation on
global lock (this includes emulation of user accesses to the ID
registers)
Perf and PMU:
- Support for TLP filters in Hisilicon's PCIe PMU device
- Support for the DDR PMU present in Amlogic Meson G12 SoCs
- Support for the terribly-named "CoreSight PMU" architecture from
Arm (and Nvidia's implementation of said architecture)
Misc:
- Tighten up our boot protocol for systems with memory above 52 bits
physical
- Const-ify static keys to satisty jump label asm constraints
- Trivial FFA driver cleanups in preparation for v1.1 support
- Export the kernel_neon_* APIs as GPL symbols
- Harden our instruction generation routines against instrumentation
- A bunch of robustness improvements to our arch-specific selftests
- Minor cleanups and fixes all over (kbuild, kprobes, kfence, PMU, ...)"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (151 commits)
arm64: kprobes: Return DBG_HOOK_ERROR if kprobes can not handle a BRK
arm64: kprobes: Let arch do_page_fault() fix up page fault in user handler
arm64: Prohibit instrumentation on arch_stack_walk()
arm64:uprobe fix the uprobe SWBP_INSN in big-endian
arm64: alternatives: add __init/__initconst to some functions/variables
arm_pmu: Drop redundant armpmu->map_event() in armpmu_event_init()
kselftest/arm64: Allow epoll_wait() to return more than one result
kselftest/arm64: Don't drain output while spawning children
kselftest/arm64: Hold fp-stress children until they're all spawned
arm64/sysreg: Remove duplicate definitions from asm/sysreg.h
arm64/sysreg: Convert ID_DFR1_EL1 to automatic generation
arm64/sysreg: Convert ID_DFR0_EL1 to automatic generation
arm64/sysreg: Convert ID_AFR0_EL1 to automatic generation
arm64/sysreg: Convert ID_MMFR5_EL1 to automatic generation
arm64/sysreg: Convert MVFR2_EL1 to automatic generation
arm64/sysreg: Convert MVFR1_EL1 to automatic generation
arm64/sysreg: Convert MVFR0_EL1 to automatic generation
arm64/sysreg: Convert ID_PFR2_EL1 to automatic generation
arm64/sysreg: Convert ID_PFR1_EL1 to automatic generation
arm64/sysreg: Convert ID_PFR0_EL1 to automatic generation
...
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git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab
Pull slab updates from Vlastimil Babka:
- SLOB deprecation and SLUB_TINY
The SLOB allocator adds maintenance burden and stands in the way of
API improvements [1]. Deprecate it by renaming the config option (to
make users notice) to CONFIG_SLOB_DEPRECATED with updated help text.
SLUB should be used instead as SLAB will be the next on the removal
list.
Based on reports from a riscv k210 board with 8MB RAM, add a
CONFIG_SLUB_TINY option to minimize SLUB's memory usage at the
expense of scalability. This has resolved the k210 regression [2] so
in case there are no others (that wouldn't be resolvable by further
tweaks to SLUB_TINY) plan is to remove SLOB in a few cycles.
Existing defconfigs with CONFIG_SLOB are converted to
CONFIG_SLUB_TINY.
- kmalloc() slub_debug redzone improvements
A series from Feng Tang that builds on the tracking or requested size
for kmalloc() allocations (for caches with debugging enabled) added
in 6.1, to make redzone checks consider the requested size and not
the rounded up one, in order to catch more subtle buffer overruns.
Includes new slub_kunit test.
- struct slab fields reordering to accomodate larger rcu_head
RCU folks would like to grow rcu_head with debugging options, which
breaks current struct slab layout's assumptions, so reorganize it to
make this possible.
- Miscellaneous improvements/fixes:
- __alloc_size checking compiler workaround (Kees Cook)
- Optimize and cleanup SLUB's sysfs init (Rasmus Villemoes)
- Make SLAB compatible with PROVE_RAW_LOCK_NESTING (Jiri Kosina)
- Correct SLUB's percpu allocation estimates (Baoquan He)
- Re-enableS LUB's run-time failslab sysfs control (Alexander Atanasov)
- Make tools/vm/slabinfo more user friendly when not run as root (Rong Tao)
- Dead code removal in SLUB (Hyeonggon Yoo)
* tag 'slab-for-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab: (31 commits)
mm, slob: rename CONFIG_SLOB to CONFIG_SLOB_DEPRECATED
mm, slub: don't aggressively inline with CONFIG_SLUB_TINY
mm, slub: remove percpu slabs with CONFIG_SLUB_TINY
mm, slub: split out allocations from pre/post hooks
mm/slub, kunit: Add a test case for kmalloc redzone check
mm/slub, kunit: add SLAB_SKIP_KFENCE flag for cache creation
mm, slub: refactor free debug processing
mm, slab: ignore SLAB_RECLAIM_ACCOUNT with CONFIG_SLUB_TINY
mm, slub: don't create kmalloc-rcl caches with CONFIG_SLUB_TINY
mm, slub: lower the default slub_max_order with CONFIG_SLUB_TINY
mm, slub: retain no free slabs on partial list with CONFIG_SLUB_TINY
mm, slub: disable SYSFS support with CONFIG_SLUB_TINY
mm, slub: add CONFIG_SLUB_TINY
mm, slab: ignore hardened usercopy parameters when disabled
slab: Remove special-casing of const 0 size allocations
slab: Clean up SLOB vs kmalloc() definition
mm/sl[au]b: rearrange struct slab fields to allow larger rcu_head
mm/migrate: make isolate_movable_page() skip slab pages
mm/slab: move and adjust kernel-doc for kmem_cache_alloc
mm/slub, percpu: correct the calculation of early percpu allocation size
...
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull execve updates from Kees Cook:
"Most are small refactorings and bug fixes, but three things stand out:
switching timens (which got reverted before) looks solid now,
FOLL_FORCE has been removed (no failures seen yet across several weeks
in -next), and some whitespace cleanups (which are long overdue).
- Add timens support (when switching mm). This version has survived
in -next for the entire cycle (Andrei Vagin)
- Various small bug fixes, refactoring, and readability improvements
(Bernd Edlinger, Rolf Eike Beer, Bo Liu, Li Zetao Liu Shixin)
- Remove FOLL_FORCE for stack setup (Kees Cook)
- Whitespace cleanups (Rolf Eike Beer, Kees Cook)"
* tag 'execve-v6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
binfmt_misc: fix shift-out-of-bounds in check_special_flags
binfmt: Fix error return code in load_elf_fdpic_binary()
exec: Remove FOLL_FORCE for stack setup
binfmt_elf: replace IS_ERR() with IS_ERR_VALUE()
binfmt_elf: simplify error handling in load_elf_phdrs()
binfmt_elf: fix documented return value for load_elf_phdrs()
exec: simplify initial stack size expansion
binfmt: Fix whitespace issues
exec: Add comments on check_unsafe_exec() fs counting
ELF uapi: add spaces before '{'
selftests/timens: add a test for vfork+exit
fs/exec: switch timens when a task gets a new mm
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull seccomp updates from Kees Cook:
- Add missing kerndoc parameter (Randy Dunlap)
- Improve seccomp selftest to check CAP_SYS_ADMIN (Gautam Menghani)
- Fix allocation leak when cloned thread immediately dies (Kuniyuki
Iwashima)
* tag 'seccomp-v6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
seccomp: document the "filter_count" field
seccomp: Move copy_seccomp() to no failure path.
selftests/seccomp: Check CAP_SYS_ADMIN capability in the test mode_filter_without_nnp
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git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu
Pull nolibc updates from Paul McKenney:
- Further improvements to nolibc testing
* tag 'nolibc.2022.12.02a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
selftests/nolibc: Always rebuild the sysroot when running a test
selftests/nolibc: Add 7 tests for memcmp()
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git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu
Pull KCSAN updates from Paul McKenney:
- Add instrumentation for memcpy(), memset(), and memmove() for Clang
v16+'s new function names that are used when the -fsanitize=thread
argument is given
- Fix objtool warnings from KCSAN's volatile instrumentation, and typos
in a pair of Kconfig options' help clauses
* tag 'kcsan.2022.12.02a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
kcsan: Fix trivial typo in Kconfig help comments
objtool, kcsan: Add volatile read/write instrumentation to whitelist
kcsan: Instrument memcpy/memset/memmove with newer Clang
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git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu
Pull kernel memory model documentation updates from Paul McKenney:
- Update the LKMM documentation, both in English and in Korean
* tag 'lkmm.2022.12.02a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
docs/memory-barriers.txt/kokr: Fix confusing name of 'data dependency barrier'
docs/memory-barriers.txt/kokr: Add memory barrier dma_mb()
docs/memory-barriers.txt/kokr: introduce io_stop_wc() and add implementation for ARM64
docs/memory-barriers.txt: Add a missed closing parenthesis
tools/memory-model: Weaken ctrl dependency definition in explanation.txt
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git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu
Pull RCU updates from Paul McKenney:
- Documentation updates. This is the second in a series from an ongoing
review of the RCU documentation.
- Miscellaneous fixes.
- Introduce a default-off Kconfig option that depends on RCU_NOCB_CPU
that, on CPUs mentioned in the nohz_full or rcu_nocbs boot-argument
CPU lists, causes call_rcu() to introduce delays.
These delays result in significant power savings on nearly idle
Android and ChromeOS systems. These savings range from a few percent
to more than ten percent.
This series also includes several commits that change call_rcu() to a
new call_rcu_hurry() function that avoids these delays in a few
cases, for example, where timely wakeups are required. Several of
these are outside of RCU and thus have acks and reviews from the
relevant maintainers.
- Create an srcu_read_lock_nmisafe() and an srcu_read_unlock_nmisafe()
for architectures that support NMIs, but which do not provide
NMI-safe this_cpu_inc(). These NMI-safe SRCU functions are required
by the upcoming lockless printk() work by John Ogness et al.
- Changes providing minor but important increases in torture test
coverage for the new RCU polled-grace-period APIs.
- Changes to torturescript that avoid redundant kernel builds, thus
providing about a 30% speedup for the torture.sh acceptance test.
* tag 'rcu.2022.12.02a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: (49 commits)
net: devinet: Reduce refcount before grace period
net: Use call_rcu_hurry() for dst_release()
workqueue: Make queue_rcu_work() use call_rcu_hurry()
percpu-refcount: Use call_rcu_hurry() for atomic switch
scsi/scsi_error: Use call_rcu_hurry() instead of call_rcu()
rcu/rcutorture: Use call_rcu_hurry() where needed
rcu/rcuscale: Use call_rcu_hurry() for async reader test
rcu/sync: Use call_rcu_hurry() instead of call_rcu
rcuscale: Add laziness and kfree tests
rcu: Shrinker for lazy rcu
rcu: Refactor code a bit in rcu_nocb_do_flush_bypass()
rcu: Make call_rcu() lazy to save power
rcu: Implement lockdep_rcu_enabled for !CONFIG_DEBUG_LOCK_ALLOC
srcu: Debug NMI safety even on archs that don't require it
srcu: Explain the reason behind the read side critical section on GP start
srcu: Warn when NMI-unsafe API is used in NMI
arch/s390: Add ARCH_HAS_NMI_SAFE_THIS_CPU_OPS Kconfig option
arch/loongarch: Add ARCH_HAS_NMI_SAFE_THIS_CPU_OPS Kconfig option
rcu: Fix __this_cpu_read() lockdep warning in rcu_force_quiescent_state()
rcu-tasks: Make grace-period-age message human-readable
...
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Merge devfreq updates and cpupower utility updates for 6.2-rc1:
- Add a private governor_data for devfreq governors (Kant Fan).
- Reorganize devfreq code to use device_match_of_node() and
devm_platform_get_and_ioremap_resource() instead of open coding
them (ye xingchen, Minghao Chi).
- Make cpupower choose base_cpu to display default cpupower details
instead of picking CPU 0 (Saket Kumar Bhaskar).
- Add Georgian translation to cpupower documentation (Zurab
Kargareteli).
- Introduce powercap intel-rapl library, powercap-info command, and
RAPL monitor into cpupower (Thomas Renninger).
* pm-devfreq:
PM / devfreq: event: use devm_platform_get_and_ioremap_resource()
PM / devfreq: event: Use device_match_of_node()
PM / devfreq: Use device_match_of_node()
PM/devfreq: governor: Add a private governor_data for governor
* pm-tools:
cpupower: rapl monitor - shows the used power consumption in uj for each rapl domain
cpupower: Introduce powercap intel-rapl library and powercap-info command
cpupower: Add Georgian translation
tools/cpupower: Choose base_cpu to display default cpupower details
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Merge cpuidle changes, updates related to system sleep amd generic power
domains code fixes for 6.2-rc1:
- Improve kernel messages printed by the cpuidle PCI driver (Ulf
Hansson).
- Make the DT cpuidle driver return the correct number of parsed idle
states, clean it up and clarify a comment in it (Ulf Hansson).
- Modify the tasks freezing code to avoid using pr_cont() and refine an
error message printed by it (Rafael Wysocki).
- Make the hibernation core code complain about memory map mismatches
during resume to help diagnostics (Xueqin Luo).
- Fix mistake in a kerneldoc comment in the hibernation code (xiongxin).
- Reverse the order of performance and enabling operations in the
generic power domains code (Abel Vesa).
- Power off[on] domains in hibernate .freeze[thaw]_noirq hook of in the
generic power domains code (Abel Vesa).
- Consolidate genpd_restore_noirq() and genpd_resume_noirq() (Shawn
Guo).
- Pass generic PM noirq hooks to genpd_finish_suspend() (Shawn Guo).
- Drop generic power domain status manipulation during hibernate
restore (Shawn Guo).
* pm-cpuidle:
cpuidle: dt: Clarify a comment and simplify code in dt_init_idle_driver()
cpuidle: dt: Return the correct numbers of parsed idle states
cpuidle: psci: Extend information in log about OSI/PC mode
* pm-sleep:
PM: sleep: Refine error message in try_to_freeze_tasks()
PM: sleep: Avoid using pr_cont() in the tasks freezing code
PM: hibernate: Complain about memory map mismatches during resume
PM: hibernate: Fix mistake in kerneldoc comment
* pm-domains:
PM: domains: Reverse the order of performance and enabling ops
PM: domains: Power off[on] domain in hibernate .freeze[thaw]_noirq hook
PM: domains: Consolidate genpd_restore_noirq() and genpd_resume_noirq()
PM: domains: Pass generic PM noirq hooks to genpd_finish_suspend()
PM: domains: Drop genpd status manipulation for hibernate restore
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Merge ACPICA changes, including bug fixes and cleanups as well as support
for some recently defined data structures, for 6.2-rc1:
- Make acpi_ex_load_op() match upstream implementation (Rafael Wysocki).
- Add support for loong_arch-specific APICs in MADT (Huacai Chen).
- Add support for fixed PCIe wake event (Huacai Chen).
- Add EBDA pointer sanity checks (Vit Kabele).
- Avoid accessing VGA memory when EBDA < 1KiB (Vit Kabele).
- Add CCEL table support to both compiler/disassembler (Kuppuswamy
Sathyanarayanan).
- Add a couple of new UUIDs to the known UUID list (Bob Moore).
- Add support for FFH Opregion special context data (Sudeep Holla).
- Improve warning message for "invalid ACPI name" (Bob Moore).
- Add support for CXL 3.0 structures (CXIMS & RDPAS) in the CEDT table
(Alison Schofield).
- Prepare IORT support for revision E.e (Robin Murphy).
- Finish support for the CDAT table (Bob Moore).
- Fix error code path in acpi_ds_call_control_method() (Rafael Wysocki).
- Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage() (Li Zetao).
- Update the version of the ACPICA code in the kernel (Bob Moore).
* acpica:
ACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage()
ACPICA: Fix error code path in acpi_ds_call_control_method()
ACPICA: Update version to 20221020
ACPICA: Add utcksum.o to the acpidump Makefile
Revert "LoongArch: Provisionally add ACPICA data structures"
ACPICA: Finish support for the CDAT table
ACPICA: IORT: Update for revision E.e
ACPICA: Add CXL 3.0 structures (CXIMS & RDPAS) to the CEDT table
ACPICA: Improve warning message for "invalid ACPI name"
ACPICA: Add support for FFH Opregion special context data
ACPICA: Add a couple of new UUIDs to the known UUID list
ACPICA: iASL: Add CCEL table to both compiler/disassembler
ACPICA: Do not touch VGA memory when EBDA < 1ki_b
ACPICA: Check that EBDA pointer is in valid memory
ACPICA: Events: Support fixed PCIe wake event
ACPICA: MADT: Add loong_arch-specific APICs support
ACPICA: Make acpi_ex_load_op() match upstream
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The test currently fails on 32bit. Fixing the "-1ull" vs. "-1ul" seems
to make the test pass and the compiler happy.
Note: This test is not in mm-stable yet. This fix should be squashed into
"selftests/vm: add KSM unmerge tests".
Link: https://lkml.kernel.org/r/20221205193716.276024-5-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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The compiler complains about the conversion of a pointer to an int of
different width.
Link: https://lkml.kernel.org/r/20221205193716.276024-4-david@redhat.com
Fixes: 6f1405efc61b ("selftests/vm: anon_cow: add R/O longterm tests via gup_test")
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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The tests fail to compile in some environments (e.g., Debian 11.5 on x86).
Let's simply conditionally define MADV_POPULATE_(READ|WRITE) if not
already defined, similar to how the khugepaged.c test handles it.
Link: https://lkml.kernel.org/r/20221205193716.276024-3-david@redhat.com
Fixes: 39b2e5cae43d ("selftests/vm: make MADV_POPULATE_(READ|WRITE) use in-tree headers")
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Make sure that we ignore protection of a memcg that is the target of memcg
reclaim.
Link: https://lkml.kernel.org/r/20221202031512.1365483-4-yosryahmed@google.com
Signed-off-by: Yosry Ahmed <yosryahmed@google.com>
Reviewed-by: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Chris Down <chris@chrisdown.name>
Cc: David Rientjes <rientjes@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Vasily Averin <vasily.averin@linux.dev>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Refactor the code that drives writing to memory.reclaim (retrying, error
handling, etc) from test_memcg_reclaim() to a helper called
reclaim_until(), which proactively reclaims from a memcg until its usage
reaches a certain value.
While we are at it, refactor and simplify the reclaim loop.
This will be used in a following patch in another test.
Link: https://lkml.kernel.org/r/20221202031512.1365483-3-yosryahmed@google.com
Signed-off-by: Yosry Ahmed <yosryahmed@google.com>
Suggested-by: Roman Gushchin <roman.gushchin@linux.dev>
Reviewed-by: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Chris Down <chris@chrisdown.name>
Cc: David Rientjes <rientjes@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Vasily Averin <vasily.averin@linux.dev>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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A DAMON sysfs user could start DAMON with a scheme, remove the sysfs
directory for the scheme, and then ask stats or schemes tried regions
update. The related logic were not aware of the already removed directory
situation, so it was able to results in invalid memory accesses. The fix
has made with commit 8468b486612c ("mm/damon/sysfs-schemes: skip stats
update if the scheme directory is removed"), though. Add a selftest to
prevent such kinds of bugs from being introduced again.
Link: https://lkml.kernel.org/r/20221201170834.62823-1-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Let's add a test to measure performance of KSM breaking not triggered via
COW, but triggered by disabling KSM on an area filled with KSM pages via
MADV_UNMERGEABLE.
Link: https://lkml.kernel.org/r/20221021101141.84170-2-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Acked-by: Peter Xu <peterx@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Patch series "mm/ksm: break_ksm() cleanups and fixes", v2.
This series cleans up and fixes break_ksm(). In summary, we no longer use
fake write faults to break COW but instead FAULT_FLAG_UNSHARE. Further,
we move away from using follow_page() --- that we can hopefully remove
completely at one point --- and use new walk_page_range_vma() instead.
Fortunately, we can get rid of VM_FAULT_WRITE and FOLL_MIGRATION in common
code now.
Extend the existing ksm tests by an unmerge benchmark, and a some new
unmerge tests.
Also, add a selftest to measure MADV_UNMERGEABLE performance. In my setup
(AMD Ryzen 9 3900X), running the KSM selftest to test unmerge performance
on 2 GiB (taskset 0x8 ./ksm_tests -D -s 2048), this results in a
performance degradation of ~6% -- 7% (old: ~5250 MiB/s, new: ~4900 MiB/s).
I don't think we particularly care for now, but it's good to be aware of
the implication.
This patch (of 9):
Let's add three unmerge tests (MADV_UNMERGEABLE unmerging all pages in the
range).
test_unmerge(): basic unmerge tests
test_unmerge_discarded(): have some pte_none() entries in the range
test_unmerge_uffd_wp(): protect the merged pages using uffd-wp
ksm_tests.c currently contains a mixture of benchmarks and tests, whereby
each test is carried out by executing the ksm_tests binary with specific
parameters. Let's add new ksm_functional_tests.c that performs multiple,
smaller functional tests all at once.
Link: https://lkml.kernel.org/r/20221021101141.84170-1-david@redhat.com
Link: https://lkml.kernel.org/r/20221021101141.84170-5-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Peter Xu <peterx@redhat.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Our memory management kernel CI testing at Red Hat uses the VM
selftests and we have run into two problems:
First, our LTP tests overlap with the VM selftests.
We want to avoid unhelpful redundancy in our testing practices.
Second, we have observed the current run_vmtests.sh to report overall
failure/ambiguous results in the case that a machine lacks the necessary
hardware to perform one or more of the tests. E.g. ksm tests that
require more than one numa node.
We want to be able to run the vm selftests suitable to particular hardware.
Add the ability to run one or more groups of vm tests via run_vmtests.sh
instead of simply all-or-none in order to solve these problems.
Preserve existing default behavior of running all tests when the script
is invoked with no arguments.
Documentation of test groups is included in the patch as follows:
# ./run_vmtests.sh [ -h || --help ]
usage: ./tools/testing/selftests/vm/run_vmtests.sh [ -h | -t "<categories>"]
-t: specify specific categories to tests to run
-h: display this message
The default behavior is to run all tests.
Alternatively, specific groups tests can be run by passing a string
to the -t argument containing one or more of the following categories
separated by spaces:
- mmap
tests for mmap(2)
- gup_test
tests for gup using gup_test interface
- userfaultfd
tests for userfaultfd(2)
- compaction
a test for the patch "Allow compaction of unevictable pages"
- mlock
tests for mlock(2)
- mremap
tests for mremap(2)
- hugevm
tests for very large virtual address space
- vmalloc
vmalloc smoke tests
- hmm
hmm smoke tests
- madv_populate
test memadvise(2) MADV_POPULATE_{READ,WRITE} options
- memfd_secret
test memfd_secret(2)
- process_mrelease
test process_mrelease(2)
- ksm
ksm tests that do not require >=2 NUMA nodes
- ksm_numa
ksm tests that require >=2 NUMA nodes
- pkey
memory protection key tests
- soft_dirty
test soft dirty page bit semantics
- anon_cow
test anonymous copy-on-write semantics
example: ./run_vmtests.sh -t "hmm mmap ksm"
Link: https://lkml.kernel.org/r/20221018231222.1884715-1-jsavitz@redhat.com
Signed-off-by: Joel Savitz <jsavitz@redhat.com>
Cc: Joel Savitz <jsavitz@redhat.com>
Cc: Nico Pache <npache@redhat.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
"Nine hotfixes.
Six for MM, three for other areas. Four of these patches address
post-6.0 issues"
* tag 'mm-hotfixes-stable-2022-12-10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
memcg: fix possible use-after-free in memcg_write_event_control()
MAINTAINERS: update Muchun Song's email
mm/gup: fix gup_pud_range() for dax
mmap: fix do_brk_flags() modifying obviously incorrect VMAs
mm/swap: fix SWP_PFN_BITS with CONFIG_PHYS_ADDR_T_64BIT on 32bit
tmpfs: fix data loss from failed fallocate
kselftests: cgroup: update kmem test precision tolerance
mm: do not BUG_ON missing brk mapping, because userspace can unmap it
mailmap: update Matti Vaittinen's email address
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Check that verifier.c:states_equal() uses check_ids() to match
consistent active_lock/map_value configurations. This allows to prune
states with active spin locks even if numerical values of
active_lock ids do not match across compared states.
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20221209135733.28851-8-eddyz87@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Test that when reg->id is not same for the same register of type
PTR_TO_MAP_VALUE between current and old explored state, we currently
return false from regsafe and continue exploring.
Without the fix in prior commit, the test case fails.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20221209135733.28851-7-eddyz87@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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A test case that would erroneously pass verification if
verifier.c:states_equal() maintains separate register ID mappings for
call frames.
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20221209135733.28851-5-eddyz87@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Under certain conditions it was possible for verifier.c:regsafe() to
skip check_id() call. This commit adds negative test cases previously
errorneously accepted as safe.
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20221209135733.28851-3-eddyz87@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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1813e51eece0 ("memcg: increase MEMCG_CHARGE_BATCH to 64") has changed
the batch size while this test case has been left behind. This has led
to a test failure reported by test bot:
not ok 2 selftests: cgroup: test_kmem # exit=1
Update the tolerance for the pcp charges to reflect the
MEMCG_CHARGE_BATCH change to fix this.
[akpm@linux-foundation.org: update comments, per Roman]
Link: https://lkml.kernel.org/r/Y4m8Unt6FhWKC6IH@dhcp22.suse.cz
Fixes: 1813e51eece0a ("memcg: increase MEMCG_CHARGE_BATCH to 64")
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reported-by: kernel test robot <yujie.liu@intel.com>
Link: https://lore.kernel.org/oe-lkp/202212010958.c1053bd3-yujie.liu@intel.com
Acked-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Roman Gushchin <roman.gushchin@linux.dev>
Tested-by: Yujie Liu <yujie.liu@intel.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Feng Tang <feng.tang@intel.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: "Michal Koutný" <mkoutny@suse.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Add man pages for the rv command line, using the same scheme we used
in rtla.
Link: https://lkml.kernel.org/r/e841d7cfbdfc3ebdaf7cbd40278571940145d829.1668180100.git.bristot@kernel.org
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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Add the ability to control and trace in-kernel monitors. This is
a generic interface, it will check for existing monitors and enable
standard setup, like enabling reactors.
For example:
# rv list
wip wakeup in preemptive per-cpu testing monitor. [OFF]
wwnr wakeup while not running per-task testing model. [OFF]
# rv mon wwnr --help
rv version 6.1.0-rc4: help
usage: rv mon wwnr [-h] [-q] [-r reactor] [-s] [-v]
-h/--help: print this menu and the reactor list
-r/--reactor 'reactor': enables the 'reactor'
-s/--self: when tracing (-t), also trace rv command
-t/--trace: trace monitor's event
-v/--verbose: print debug messages
available reactors: nop printk panic
# rv mon wwnr --trace
<TASK>-PID [CPU] TYPE ID STATE x EVENT -> NEXT_STATE FINAL
| | | | | | | | |
rv-3613 [001] event 3613 running x switch_out -> not_running Y
sshd-1248 [005] event 1248 running x switch_out -> not_running Y
<idle>-0 [005] event 71 not_running x wakeup -> not_running Y
<idle>-0 [005] event 71 not_running x switch_in -> running N
kcompactd0-71 [005] event 71 running x switch_out -> not_running Y
<idle>-0 [000] event 860 not_running x wakeup -> not_running Y
<idle>-0 [000] event 860 not_running x switch_in -> running N
systemd-oomd-860 [000] event 860 running x switch_out -> not_running Y
<idle>-0 [000] event 860 not_running x wakeup -> not_running Y
<idle>-0 [000] event 860 not_running x switch_in -> running N
systemd-oomd-860 [000] event 860 running x switch_out -> not_running Y
<idle>-0 [005] event 71 not_running x wakeup -> not_running Y
<idle>-0 [005] event 71 not_running x switch_in -> running N
kcompactd0-71 [005] event 71 running x switch_out -> not_running Y
<idle>-0 [000] event 860 not_running x wakeup -> not_running Y
<idle>-0 [000] event 860 not_running x switch_in -> running N
systemd-oomd-860 [000] event 860 running x switch_out -> not_running Y
<idle>-0 [001] event 3613 not_running x wakeup -> not_running Y
Link: https://lkml.kernel.org/r/1e57547e3acadda6e23949b2672c89e76ec2ec42.1668180100.git.bristot@kernel.org
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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This is the (user-space) runtime verification tool, named rv.
This tool aims to be the interface for in-kernel rv monitors, as
well as the home for monitors in user-space (online asynchronous),
and in *eBPF.
The tool receives a command as the first argument, the current
commands are:
list - list all available monitors
mon - run a given monitor
Each monitor is an independent piece of software inside the
tool and can have their own arguments.
There is no monitor implemented in this patch, it only
adds the basic structure of the tool, based on rtla.
# rv --help
rv version 6.1.0-rc4: help
usage: rv command [-h] [command_options]
-h/--help: print this menu
command: run one of the following command:
list: list all available monitors
mon: run a monitor
[command options]: each command has its own set of options
run rv command -h for further information
*dot2bpf is the next patch set, depends on this, doing cleanups.
Link: https://lkml.kernel.org/r/fb51184f3b95aea0d7bfdc33ec09f4153aee84fa.1668180100.git.bristot@kernel.org
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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rtla_usage(), osnoise_usage() and timerlat_usage() all exit with an
error status.
However when these are called from help, they should exit with a
non-error status.
Fix this by passing the exit status to the functions.
Note, although we remove the subsequent call to exit after calling
usage, we leave it in at the end of a function to suppress the compiler
warning "control reaches end of a non-void function".
Link: https://lkml.kernel.org/r/20221107144313.22470-1-jkacur@redhat.com
Signed-off-by: John Kacur <jkacur@redhat.com>
Acked-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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MEM_REGION_TEST_DATA is meant to hold data explicitly used by a
selftest, not implicit allocations due to the selftests infrastructure.
Allocate the ucall pool from MEM_REGION_DATA much like the rest of the
selftests library allocations.
Fixes: 426729b2cf2e ("KVM: selftests: Add ucall pool based implementation")
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Message-Id: <20221207214809.489070-5-oliver.upton@linux.dev>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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