linux/tools
Mark Brown 1e2c449927 selftests/cpufreq: Don't enable generic lock debugging options
Currently the the config fragment for cpufreq enables a lot of generic
lock debugging.  While these options are useful when testing cpufreq
they aren't actually required to run the tests and are therefore out of
scope for the cpufreq fragement, they are more of a thing that it's good
to enable while doing testing than an actual requirement for cpufreq
testing specifically.  Having these debugging options enabled,
especially the mutex and spinlock instrumentation, mean that any build
that includes the cpufreq fragment is both very much larger than a
standard defconfig (eg, I'm seeing 35% on x86_64) and also slower at
runtime.

This is causing real problems for CI systems.  In order to avoid
building large numbers of kernels they try to group kselftest fragments
together, frequently just grouping all the kselftest fragments into a
single block.  The increased size is an issue for memory constrained
systems and is also problematic for systems with fixed storage
allocations for kernel images (eg, typical u-boot systems) where it
frequently causes the kernel to overflow the storage space allocated for
kernels.  The reduced performance isn't too bad with real hardware but
can be disruptive on emulated platforms.

In order to avoid these issues remove these generic instrumentation
options from the cpufreq fragment, bringing the cpufreq fragment into
line with other fragments which generally set requirements for testing
rather than nice to haves.

Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2023-06-12 16:39:11 -06:00
..
accounting delayacct: track delays from IRQ/SOFTIRQ 2023-04-18 16:39:34 -07:00
arch perf bench syscall: Fix __NR_execve undeclared build error 2023-05-19 12:08:00 -03:00
bootconfig
bpf Mainly singleton patches all over the place. Series of note are: 2023-04-27 19:57:00 -07:00
build
certs
cgroup
counter
debugging
edid
firewire
firmware
gpio tools: gpio: fix debounce_period_us output of lsgpio 2023-05-11 10:56:24 +02:00
hv
iio
include bpf-for-netdev 2023-06-07 21:47:11 -07:00
io_uring
kvm/kvm_stat
laptop
leds
lib bpf: netfilter: Add BPF_NETFILTER bpf_attach_type 2023-06-05 15:01:43 -07:00
memory-model LKMM scripting updates for v6.4 2023-04-24 12:02:25 -07:00
mm slab changes for 6.4 2023-04-25 13:00:41 -07:00
net/ynl tools: ynl: avoid dict errors on older Python versions 2023-05-25 21:02:43 -07:00
objtool Objtool changes for v6.4: 2023-04-28 14:02:54 -07:00
pci
pcmcia
perf perf evsel: Separate bpf_counter_list and bpf_filters, can be used at the same time 2023-05-26 16:03:43 -03:00
power cpupower: Make TSC read per CPU for Mperf monitor 2023-05-08 10:46:49 -06:00
rcu
scripts sh updates for v6.4 2023-04-27 17:41:23 -07:00
spi
testing selftests/cpufreq: Don't enable generic lock debugging options 2023-06-12 16:39:11 -06:00
thermal
time
tracing rtla/timerlat: Fix "Previous IRQ" auto analysis' line 2023-04-25 19:26:59 -04:00
usb
verification rv: Fix addition on an uninitialized variable 'run' 2023-04-25 17:02:13 -04:00
virtio tools/virtio: use canonical ftrace path 2023-06-09 12:08:08 -04:00
wmi
Makefile tools/Makefile: do missed s/vm/mm/ 2023-04-18 14:22:12 -07:00