Wyes Karny 912a6cff0d cpupower: Make TSC read per CPU for Mperf monitor ... [ Upstream commit c2adb1877b ] System-wide TSC read could cause a drift in C0 percentage calculation. Because if first TSC is read and then one by one mperf is read for all cpus, this introduces drift between mperf reading of later CPUs and TSC reading. To lower this drift read TSC per CPU and also just after mperf read. This technique improves C0 percentage calculation in Mperf monitor. Before fix: (System 100% busy) | Mperf || RAPL || Idle_Stats PKG|CORE| CPU| C0 | Cx | Freq || pack | core || POLL | C1 | C2 0| 0| 0| 87.15| 12.85| 2695||168659003|3970468|| 0.00| 0.00| 0.00 0| 0| 256| 84.62| 15.38| 2695||168659003|3970468|| 0.00| 0.00| 0.00 0| 1| 1| 87.15| 12.85| 2695||168659003|3970468|| 0.00| 0.00| 0.00 0| 1| 257| 84.08| 15.92| 2695||168659003|3970468|| 0.00| 0.00| 0.00 0| 2| 2| 86.61| 13.39| 2695||168659003|3970468|| 0.00| 0.00| 0.00 0| 2| 258| 83.26| 16.74| 2695||168659003|3970468|| 0.00| 0.00| 0.00 0| 3| 3| 86.61| 13.39| 2695||168659003|3970468|| 0.00| 0.00| 0.00 0| 3| 259| 83.60| 16.40| 2695||168659003|3970468|| 0.00| 0.00| 0.00 0| 4| 4| 86.33| 13.67| 2695||168659003|3970468|| 0.00| 0.00| 0.00 0| 4| 260| 83.33| 16.67| 2695||168659003|3970468|| 0.00| 0.00| 0.00 0| 5| 5| 86.06| 13.94| 2695||168659003|3970468|| 0.00| 0.00| 0.00 0| 5| 261| 83.05| 16.95| 2695||168659003|3970468|| 0.00| 0.00| 0.00 0| 6| 6| 85.51| 14.49| 2695||168659003|3970468|| 0.00| 0.00| 0.00 After fix: (System 100% busy) | Mperf || RAPL || Idle_Stats PKG|CORE| CPU| C0 | Cx | Freq || pack | core || POLL | C1 | C2 0| 0| 0| 98.03| 1.97| 2415||163295480|3811189|| 0.00| 0.00| 0.00 0| 0| 256| 98.50| 1.50| 2394||163295480|3811189|| 0.00| 0.00| 0.00 0| 1| 1| 99.99| 0.01| 2401||163295480|3811189|| 0.00| 0.00| 0.00 0| 1| 257| 99.99| 0.01| 2375||163295480|3811189|| 0.00| 0.00| 0.00 0| 2| 2| 99.99| 0.01| 2401||163295480|3811189|| 0.00| 0.00| 0.00 0| 2| 258|100.00| 0.00| 2401||163295480|3811189|| 0.00| 0.00| 0.00 0| 3| 3|100.00| 0.00| 2401||163295480|3811189|| 0.00| 0.00| 0.00 0| 3| 259| 99.99| 0.01| 2435||163295480|3811189|| 0.00| 0.00| 0.00 0| 4| 4|100.00| 0.00| 2401||163295480|3811189|| 0.00| 0.00| 0.00 0| 4| 260|100.00| 0.00| 2435||163295480|3811189|| 0.00| 0.00| 0.00 0| 5| 5| 99.99| 0.01| 2401||163295480|3811189|| 0.00| 0.00| 0.00 0| 5| 261|100.00| 0.00| 2435||163295480|3811189|| 0.00| 0.00| 0.00 0| 6| 6|100.00| 0.00| 2401||163295480|3811189|| 0.00| 0.00| 0.00 0| 6| 262|100.00| 0.00| 2435||163295480|3811189|| 0.00| 0.00| 0.00 Cc: Thomas Renninger <trenn@suse.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Fixes: 7fe2f6399a ("cpupowerutils - cpufrequtils extended with quite some features") Signed-off-by: Wyes Karny <wyes.karny@amd.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-05-30 12:44:04 +01:00
..
accounting	tools/accounting/getdelays.c: fix netlink attribute length	2020-04-13 10:48:08 +02:00
arch	parisc: Align parisc MADV_XXX constants with all other architectures	2023-01-18 11:42:00 +01:00
bpf	bpftool: Fix bug for long instructions in program CFG dumps	2023-05-17 11:35:42 +02:00
build	tools build: Switch to new openssl API for test-libcrypto	2022-08-25 11:18:25 +02:00
cgroup	iocost_monitor: drop string wrap around numbers when outputting json	2020-06-22 09:31:01 +02:00
debugging	…
firewire	…
firmware	…
gpio	tools: gpio-hammer: Avoid potential overflow in main	2020-10-01 13:17:47 +02:00
hv	…
iio	tools/iio/iio_utils:fix memory leak	2023-03-11 16:44:14 +01:00
include	tools/nolibc/string: Fix memcmp() implementation	2022-11-10 17:57:55 +01:00
io_uring	tools/io_uring: fix compile breakage	2020-10-07 08:01:27 +02:00
kvm/kvm_stat	tools/kvm_stat: Fix kvm_exit filter name	2020-02-11 04:35:36 -08:00
laptop	…
leds	…
lib	libbpf: Fix alen calculation in libbpf_nla_dump_errormsg()	2023-03-11 16:43:41 +01:00
memory-model	tools/memory-model: Fix data race detection for unordered store and load	2019-12-31 16:43:40 +01:00
nfsd	…
objtool	objtool: Add a missing comma to avoid string concatenation	2023-02-06 07:52:49 +01:00
pci	tools: PCI: Fix fd leakage	2020-01-17 19:48:54 +01:00
pcmcia	…
perf	perf symbols: Fix return incorrect build_id size in elf_read_build_id()	2023-05-17 11:36:00 +02:00
power	cpupower: Make TSC read per CPU for Mperf monitor	2023-05-30 12:44:04 +01:00
scripts	tools: Allow proper CC/CXX/... override with LLVM=1 in Makefile.include	2021-07-31 08:19:37 +02:00
spi	…
testing	selftests: sigaltstack: fix -Wuninitialized	2023-04-26 11:24:03 +02:00
thermal/tmon	tools/thermal: Fix possible path truncations	2022-08-25 11:18:09 +02:00
time	…
usb	usb: testusb: Fix for showing the connection speed	2021-10-09 14:39:49 +02:00
virtio	tools/virtio: fix the vringh test for virtio ring changes	2023-02-22 12:50:34 +01:00
vm	tools/vm/slabinfo-gnuplot: use "grep -E" instead of "egrep"	2022-12-08 11:23:04 +01:00
wmi	…
Makefile	…