mirror of
https://github.com/torvalds/linux
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2a52ca7c98
Add two simple example BPF schedulers - simple and qmap.
* simple: In terms of scheduling, it behaves identical to not having any
operation implemented at all. The two operations it implements are only to
improve visibility and exit handling. On certain homogeneous
configurations, this actually can perform pretty well.
* qmap: A fixed five level priority scheduler to demonstrate queueing PIDs
on BPF maps for scheduling. While not very practical, this is useful as a
simple example and will be used to demonstrate different features.
v7: - Compat helpers stripped out in prepartion of upstreaming as the
upstreamed patchset will be the baselinfe. Utility macros that can be
used to implement compat features are kept.
- Explicitly disable map autoattach on struct_ops to avoid trying to
attach twice while maintaining compatbility with older libbpf.
v6: - Common header files reorganized and cleaned up. Compat helpers are
added to demonstrate how schedulers can maintain backward
compatibility with older kernels while making use of newly added
features.
- simple_select_cpu() added to keep track of the number of local
dispatches. This is needed because the default ops.select_cpu()
implementation is updated to dispatch directly and won't call
ops.enqueue().
- Updated to reflect the sched_ext API changes. Switching all tasks is
the default behavior now and scx_qmap supports partial switching when
`-p` is specified.
- tools/sched_ext/Kconfig dropped. This will be included in the doc
instead.
v5: - Improve Makefile. Build artifects are now collected into a separate
dir which change be changed. Install and help targets are added and
clean actually cleans everything.
- MEMBER_VPTR() improved to improve access to structs. ARRAY_ELEM_PTR()
and RESIZEABLE_ARRAY() are added to support resizable arrays in .bss.
- Add scx_common.h which provides common utilities to user code such as
SCX_BUG[_ON]() and RESIZE_ARRAY().
- Use SCX_BUG[_ON]() to simplify error handling.
v4: - Dropped _example prefix from scheduler names.
v3: - Rename scx_example_dummy to scx_example_simple and restructure a bit
to ease later additions. Comment updates.
- Added declarations for BPF inline iterators. In the future, hopefully,
these will be consolidated into a generic BPF header so that they
don't need to be replicated here.
v2: - Updated with the generic BPF cpumask helpers.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: David Vernet <dvernet@meta.com>
Acked-by: Josh Don <joshdon@google.com>
Acked-by: Hao Luo <haoluo@google.com>
Acked-by: Barret Rhoden <brho@google.com>
227 lines
7.1 KiB
Makefile
227 lines
7.1 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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# Some of the tools (perf) use same make variables
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# as in kernel build.
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export srctree=
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export objtree=
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include scripts/Makefile.include
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help:
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@echo 'Possible targets:'
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@echo ''
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@echo ' acpi - ACPI tools'
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@echo ' bpf - misc BPF tools'
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@echo ' counter - counter tools'
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@echo ' cpupower - a tool for all things x86 CPU power'
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@echo ' debugging - tools for debugging'
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@echo ' firewire - the userspace part of nosy, an IEEE-1394 traffic sniffer'
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@echo ' firmware - Firmware tools'
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@echo ' freefall - laptop accelerometer program for disk protection'
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@echo ' gpio - GPIO tools'
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@echo ' hv - tools used when in Hyper-V clients'
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@echo ' iio - IIO tools'
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@echo ' intel-speed-select - Intel Speed Select tool'
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@echo ' kvm_stat - top-like utility for displaying kvm statistics'
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@echo ' leds - LEDs tools'
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@echo ' nolibc - nolibc headers testing and installation'
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@echo ' objtool - an ELF object analysis tool'
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@echo ' pci - PCI tools'
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@echo ' perf - Linux performance measurement and analysis tool'
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@echo ' selftests - various kernel selftests'
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@echo ' sched_ext - sched_ext example schedulers'
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@echo ' bootconfig - boot config tool'
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@echo ' spi - spi tools'
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@echo ' tmon - thermal monitoring and tuning tool'
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@echo ' thermometer - temperature capture tool'
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@echo ' thermal-engine - thermal monitoring tool'
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@echo ' thermal - thermal library'
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@echo ' tracing - misc tracing tools'
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@echo ' turbostat - Intel CPU idle stats and freq reporting tool'
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@echo ' usb - USB testing tools'
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@echo ' virtio - vhost test module'
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@echo ' mm - misc mm tools'
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@echo ' wmi - WMI interface examples'
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@echo ' x86_energy_perf_policy - Intel energy policy tool'
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@echo ''
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@echo 'You can do:'
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@echo ' $$ make -C tools/ <tool>_install'
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@echo ''
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@echo ' from the kernel command line to build and install one of'
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@echo ' the tools above'
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@echo ''
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@echo ' $$ make tools/all'
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@echo ''
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@echo ' builds all tools.'
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@echo ''
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@echo ' $$ make tools/install'
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@echo ''
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@echo ' installs all tools.'
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@echo ''
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@echo 'Cleaning targets:'
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@echo ''
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@echo ' all of the above with the "_clean" string appended cleans'
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@echo ' the respective build directory.'
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@echo ' clean: a summary clean target to clean _all_ folders'
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acpi: FORCE
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$(call descend,power/$@)
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cpupower: FORCE
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$(call descend,power/$@)
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counter firewire hv guest bootconfig spi usb virtio mm bpf iio gpio objtool leds wmi pci firmware debugging tracing: FORCE
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$(call descend,$@)
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bpf/%: FORCE
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$(call descend,$@)
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libapi: FORCE
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$(call descend,lib/api)
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nolibc: FORCE
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$(call descend,include/nolibc)
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nolibc_%: FORCE
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$(call descend,include/nolibc,$(patsubst nolibc_%,%,$@))
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# The perf build does not follow the descend function setup,
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# invoking it via it's own make rule.
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PERF_O = $(if $(O),$(O)/tools/perf,)
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perf: FORCE
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$(Q)mkdir -p $(PERF_O) .
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$(Q)$(MAKE) --no-print-directory -C perf O=$(PERF_O) subdir=
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sched_ext: FORCE
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$(call descend,sched_ext)
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selftests: FORCE
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$(call descend,testing/$@)
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thermal: FORCE
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$(call descend,lib/$@)
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turbostat x86_energy_perf_policy intel-speed-select: FORCE
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$(call descend,power/x86/$@)
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tmon: FORCE
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$(call descend,thermal/$@)
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thermometer: FORCE
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$(call descend,thermal/$@)
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thermal-engine: FORCE thermal
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$(call descend,thermal/$@)
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freefall: FORCE
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$(call descend,laptop/$@)
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kvm_stat: FORCE
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$(call descend,kvm/$@)
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all: acpi counter cpupower gpio hv firewire \
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perf selftests bootconfig spi turbostat usb \
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virtio mm bpf x86_energy_perf_policy \
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tmon freefall iio objtool kvm_stat wmi \
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pci debugging tracing thermal thermometer thermal-engine
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acpi_install:
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$(call descend,power/$(@:_install=),install)
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cpupower_install:
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$(call descend,power/$(@:_install=),install)
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counter_install firewire_install gpio_install hv_install iio_install perf_install bootconfig_install spi_install usb_install virtio_install mm_install bpf_install objtool_install wmi_install pci_install debugging_install tracing_install:
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$(call descend,$(@:_install=),install)
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selftests_install:
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$(call descend,testing/$(@:_install=),install)
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thermal_install:
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$(call descend,lib/$(@:_install=),install)
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turbostat_install x86_energy_perf_policy_install intel-speed-select_install:
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$(call descend,power/x86/$(@:_install=),install)
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tmon_install:
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$(call descend,thermal/$(@:_install=),install)
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thermometer_install:
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$(call descend,thermal/$(@:_install=),install)
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thermal-engine_install:
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$(call descend,thermal/$(@:_install=),install)
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freefall_install:
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$(call descend,laptop/$(@:_install=),install)
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kvm_stat_install:
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$(call descend,kvm/$(@:_install=),install)
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install: acpi_install counter_install cpupower_install gpio_install \
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hv_install firewire_install iio_install \
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perf_install selftests_install turbostat_install usb_install \
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virtio_install mm_install bpf_install x86_energy_perf_policy_install \
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tmon_install freefall_install objtool_install kvm_stat_install \
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wmi_install pci_install debugging_install intel-speed-select_install \
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tracing_install thermometer_install thermal-engine_install
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acpi_clean:
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$(call descend,power/acpi,clean)
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cpupower_clean:
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$(call descend,power/cpupower,clean)
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counter_clean hv_clean firewire_clean bootconfig_clean spi_clean usb_clean virtio_clean mm_clean wmi_clean bpf_clean iio_clean gpio_clean objtool_clean leds_clean pci_clean firmware_clean debugging_clean tracing_clean:
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$(call descend,$(@:_clean=),clean)
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libapi_clean:
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$(call descend,lib/api,clean)
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libbpf_clean:
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$(call descend,lib/bpf,clean)
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libsubcmd_clean:
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$(call descend,lib/subcmd,clean)
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perf_clean:
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$(Q)mkdir -p $(PERF_O) .
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$(Q)$(MAKE) --no-print-directory -C perf O=$(PERF_O) subdir= clean
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sched_ext_clean:
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$(call descend,sched_ext,clean)
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selftests_clean:
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$(call descend,testing/$(@:_clean=),clean)
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thermal_clean:
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$(call descend,lib/thermal,clean)
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turbostat_clean x86_energy_perf_policy_clean intel-speed-select_clean:
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$(call descend,power/x86/$(@:_clean=),clean)
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thermometer_clean:
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$(call descend,thermal/thermometer,clean)
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thermal-engine_clean:
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$(call descend,thermal/thermal-engine,clean)
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tmon_clean:
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$(call descend,thermal/tmon,clean)
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freefall_clean:
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$(call descend,laptop/freefall,clean)
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build_clean:
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$(call descend,build,clean)
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clean: acpi_clean counter_clean cpupower_clean hv_clean firewire_clean \
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perf_clean selftests_clean turbostat_clean bootconfig_clean spi_clean usb_clean virtio_clean \
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mm_clean bpf_clean iio_clean x86_energy_perf_policy_clean tmon_clean \
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freefall_clean build_clean libbpf_clean libsubcmd_clean \
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gpio_clean objtool_clean leds_clean wmi_clean pci_clean firmware_clean debugging_clean \
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intel-speed-select_clean tracing_clean thermal_clean thermometer_clean thermal-engine_clean \
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sched_ext_clean
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.PHONY: FORCE
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