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538b0188da
linux/drivers/cpufreq
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Rafael J. Wysocki 538b0188da cpufreq: ACPI: Set cpuinfo.max_freq directly if max boost is known 
Commit 3c55e94c0a ("cpufreq: ACPI: Extend frequency tables to cover
boost frequencies") attempted to address a performance issue involving
acpi-cpufreq, the schedutil governor and scale-invariance on x86 by
extending the frequency tables created by acpi-cpufreq to cover the
entire range of "turbo" (or "boost") frequencies, but that caused
frequencies reported via /proc/cpuinfo and the scaling_cur_freq
attribute in sysfs to change which may confuse users and monitoring
tools.

For this reason, revert the part of commit 3c55e94c0a adding the
extra entry to the frequency table and use the observation that
in principle cpuinfo.max_freq need not be equal to the maximum
frequency listed in the frequency table for the given policy.

Namely, modify cpufreq_frequency_table_cpuinfo() to allow cpufreq
drivers to set their own cpuinfo.max_freq above that frequency and
change  acpi-cpufreq to set cpuinfo.max_freq to the maximum boost
frequency found via CPPC.

This should be sufficient to let all of the cpufreq subsystem know
the real maximum frequency of the CPU without changing frequency
reporting.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=211305
Fixes: 3c55e94c0a ("cpufreq: ACPI: Extend frequency tables to cover boost frequencies")
Reported-by: Matt McDonald <gardotd426@gmail.com>
Tested-by: Matt McDonald <gardotd426@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Giovanni Gherdovich <ggherdovich@suse.cz>
Tested-by: Michael Larabel <Michael@phoronix.com>
Cc: 5.11+ <stable@vger.kernel.org> # 5.11+
2021-02-18 18:34:56 +01:00
..
acpi-cpufreq.c cpufreq: ACPI: Set cpuinfo.max_freq directly if max boost is known 2021-02-18 18:34:56 +01:00
amd_freq_sensitivity.c cpufreq: amd_freq_sensitivity: Mark sometimes used ID structs as __maybe_unused 2020-07-15 15:17:06 +02:00
armada-8k-cpufreq.c cpufreq: ap806: Add missing MODULE_DEVICE_TABLE 2020-12-07 13:02:37 +05:30
armada-37xx-cpufreq.c cpufreq: armada-37xx: Add missing MODULE_DEVICE_TABLE 2020-09-16 14:12:18 +05:30
bmips-cpufreq.c cpufreq: Make cpufreq_generic_init() return void 2019-07-16 10:20:11 +02:00
brcmstb-avs-cpufreq.c cpufreq: brcmstb-avs-cpufreq: Fix resource leaks in ->remove() 2021-01-18 12:23:43 +05:30
cppc_cpufreq.c cppc_cpufreq: replace per-cpu data array with a list 2020-12-15 19:19:32 +01:00
cpufreq_conservative.c cpufreq: Register governors at core_initcall 2020-07-02 13:03:30 +02:00
cpufreq_governor_attr_set.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cpufreq_governor.c cpufreq: cpufreq_governor: Demote store_sampling_rate() header to standard comment block 2020-07-15 15:17:06 +02:00
cpufreq_governor.h cpufreq: Introduce governor flags 2020-11-10 18:31:17 +01:00
cpufreq_ondemand.c cpufreq: Register governors at core_initcall 2020-07-02 13:03:30 +02:00
cpufreq_ondemand.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cpufreq_performance.c cpufreq: Introduce CPUFREQ_GOV_STRICT_TARGET 2020-11-10 18:31:17 +01:00
cpufreq_powersave.c cpufreq: Introduce CPUFREQ_GOV_STRICT_TARGET 2020-11-10 18:31:17 +01:00
cpufreq_stats.c cpufreq: stats: Use local_clock() instead of jiffies 2020-12-11 19:53:58 +01:00
cpufreq_userspace.c cpufreq: Register governors at core_initcall 2020-07-02 13:03:30 +02:00
cpufreq-dt-platdev.c cpufreq: remove tango driver 2021-01-21 09:34:46 +05:30
cpufreq-dt.c cpufreq: Remove CPUFREQ_STICKY flag 2021-02-04 19:23:20 +01:00
cpufreq-dt.h cpufreq: dt: Allow platform specific intermediate callbacks 2020-03-12 15:43:52 +05:30
cpufreq-nforce2.c cpufreq: Avoid creating excessively large stack frames 2020-01-27 10:33:33 +01:00
cpufreq.c cpufreq: Remove CPUFREQ_STICKY flag 2021-02-04 19:23:20 +01:00
davinci-cpufreq.c cpufreq: Remove CPUFREQ_STICKY flag 2021-02-04 19:23:20 +01:00
e_powersaver.c cpufreq: e_powersaver: remove unreachable break 2020-10-27 18:42:54 +01:00
elanfreq.c cpufreq: Convert to new X86 CPU match macros 2020-03-24 21:31:27 +01:00
freq_table.c cpufreq: ACPI: Set cpuinfo.max_freq directly if max boost is known 2021-02-18 18:34:56 +01:00
gx-suspmod.c cpufreq: Avoid creating excessively large stack frames 2020-01-27 10:33:33 +01:00
highbank-cpufreq.c cpufreq: highbank: Add missing MODULE_DEVICE_TABLE 2020-12-07 13:02:37 +05:30
ia64-acpi-cpufreq.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
imx6q-cpufreq.c cpufreq: imx6q: Unconditionally call dev_pm_opp_of_remove_table() 2020-09-10 16:36:09 +05:30
imx-cpufreq-dt.c cpufreq: imx-cpufreq-dt: support i.MX7ULP 2020-04-28 14:26:20 +05:30
intel_pstate.c cpufreq: intel_pstate: Remove repeated word 2021-01-22 17:04:56 +01:00
Kconfig cpufreq: Avoid configuring old governors as default with intel_pstate 2020-10-27 18:45:34 +01:00
Kconfig.arm cpufreq: remove tango driver 2021-01-21 09:34:46 +05:30
Kconfig.powerpc cpufreq: Fix Kconfig indentation 2019-11-29 11:52:02 +01:00
Kconfig.x86 treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
kirkwood-cpufreq.c cpufreq: kirkwood: convert to devm_platform_ioremap_resource 2020-01-07 13:29:58 +05:30
longhaul.c cpufreq: e_powersaver: remove unreachable break 2020-10-27 18:42:54 +01:00
longhaul.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
longrun.c cpufreq: Convert to new X86 CPU match macros 2020-03-24 21:31:27 +01:00
loongson1-cpufreq.c cpufreq: Remove CPUFREQ_STICKY flag 2021-02-04 19:23:20 +01:00
loongson2_cpufreq.c mips: loongsoon2ef: remove private clk api 2020-04-16 17:34:23 +02:00
Makefile cpufreq: remove tango driver 2021-01-21 09:34:46 +05:30
maple-cpufreq.c Merge branch 'pm-cpufreq' 2019-07-18 09:49:30 +02:00
mediatek-cpufreq.c cpufreq: Remove CPUFREQ_STICKY flag 2021-02-04 19:23:20 +01:00
mvebu-cpufreq.c cpufreq: mvebu: Remove OPPs using dev_pm_opp_remove() 2018-09-19 14:56:44 -07:00
omap-cpufreq.c cpufreq: Remove CPUFREQ_STICKY flag 2021-02-04 19:23:20 +01:00
p4-clockmod.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
pasemi-cpufreq.c cpufreq: pasemi: Include header file for {check,restore}_astate prototypes 2020-07-15 15:17:06 +02:00
pcc-cpufreq.c cpufreq: pcc-cpufreq: Mark sometimes used ID structs as __maybe_unused 2020-07-15 15:17:06 +02:00
pmac32-cpufreq.c cpufreq: Remove unused flag CPUFREQ_PM_NO_WARN 2021-02-04 19:25:47 +01:00
pmac64-cpufreq.c Merge branch 'pm-cpufreq' 2019-07-18 09:49:30 +02:00
powernow-k6.c cpufreq: Convert to new X86 CPU match macros 2020-03-24 21:31:27 +01:00
powernow-k7.c cpufreq: Convert to new X86 CPU match macros 2020-03-24 21:31:27 +01:00
powernow-k7.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
powernow-k8.c cpufreq: powernow-k8: pass policy rather than use cpufreq_cpu_get() 2021-01-07 17:37:33 +01:00
powernow-k8.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 347 2019-06-05 17:37:08 +02:00
powernv-cpufreq.c cpufreq: powernv: Fix frame-size-overflow in powernv_cpufreq_reboot_notifier 2020-10-08 21:17:16 +11:00
ppc_cbe_cpufreq_pervasive.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 153 2019-05-30 11:26:32 -07:00
ppc_cbe_cpufreq_pmi.c cpufreq: Use per-policy frequency QoS 2019-10-21 02:05:21 +02:00
ppc_cbe_cpufreq.c cpufreq: powerpc_cbe: Switch to QoS requests for freq limits 2019-08-26 10:02:01 +02:00
ppc_cbe_cpufreq.h cpufreq: powerpc_cbe: Switch to QoS requests for freq limits 2019-08-26 10:02:01 +02:00
pxa2xx-cpufreq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
pxa3xx-cpufreq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
qcom-cpufreq-hw.c Merge branch 'cpufreq/arm/linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm 2021-02-08 13:54:58 +01:00
qcom-cpufreq-nvmem.c Merge branch 'pm-cpufreq' 2020-12-15 15:24:52 +01:00
qoriq-cpufreq.c cpufreq: qoriq: convert to a platform driver 2020-05-07 10:47:27 +05:30
raspberrypi-cpufreq.c cpufreq: add driver for Raspberry Pi 2019-06-13 08:58:22 +05:30
s3c24xx-cpufreq-debugfs.c ARM: s3c: remove cpufreq header dependencies 2020-08-20 17:52:05 +02:00
s3c24xx-cpufreq.c cpufreq: Remove CPUFREQ_STICKY flag 2021-02-04 19:23:20 +01:00
s3c64xx-cpufreq.c cpufreq: s3c64xx: Remove pointless NULL check in s3c64xx_cpufreq_driver_init 2019-10-23 08:53:23 +05:30
s3c2410-cpufreq.c cpufreq: s3c24xx: move low-level clk reg access into platform code 2020-08-20 17:53:22 +02:00
s3c2412-cpufreq.c cpufreq: s3c24xx: move low-level clk reg access into platform code 2020-08-20 17:53:22 +02:00
s3c2416-cpufreq.c cpufreq: s3c: fix unbalances of cpufreq policy refcount 2020-01-07 13:31:01 +05:30
s3c2440-cpufreq.c cpufreq: s3c24xx: move low-level clk reg access into platform code 2020-08-20 17:53:22 +02:00
s5pv210-cpufreq.c cpufreq: Remove CPUFREQ_STICKY flag 2021-02-04 19:23:20 +01:00
sa1100-cpufreq.c cpufreq: Remove CPUFREQ_STICKY flag 2021-02-04 19:23:20 +01:00
sa1110-cpufreq.c cpufreq: Remove CPUFREQ_STICKY flag 2021-02-04 19:23:20 +01:00
sc520_freq.c cpufreq: Convert to new X86 CPU match macros 2020-03-24 21:31:27 +01:00
scmi-cpufreq.c cpufreq: Remove CPUFREQ_STICKY flag 2021-02-04 19:23:20 +01:00
scpi-cpufreq.c cpufreq: Remove CPUFREQ_STICKY flag 2021-02-04 19:23:20 +01:00
sfi-cpufreq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 235 2019-06-19 17:09:07 +02:00
sh-cpufreq.c cpufreq: Avoid creating excessively large stack frames 2020-01-27 10:33:33 +01:00
sparc-us2e-cpufreq.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
sparc-us3-cpufreq.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
spear-cpufreq.c cpufreq: Remove CPUFREQ_STICKY flag 2021-02-04 19:23:20 +01:00
speedstep-centrino.c cpufreq: Convert to new X86 CPU match macros 2020-03-24 21:31:27 +01:00
speedstep-ich.c cpufreq: Convert to new X86 CPU match macros 2020-03-24 21:31:27 +01:00
speedstep-lib.c cpufreq: speedstep: remove unneeded semicolon 2020-10-28 18:04:07 +01:00
speedstep-lib.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
speedstep-smi.c cpufreq: Convert to new X86 CPU match macros 2020-03-24 21:31:27 +01:00
sti-cpufreq.c cpufreq: st: Add missing MODULE_DEVICE_TABLE 2020-12-07 13:02:37 +05:30
sun50i-cpufreq-nvmem.c cpufreq: sun50i: Add missing MODULE_DEVICE_TABLE 2020-12-07 13:02:37 +05:30
tegra20-cpufreq.c cpufreq: tegra20: Use resource-managed API 2021-01-18 12:02:53 +05:30
tegra124-cpufreq.c cpufreq: tegra124: Add suspend and resume support 2019-10-29 13:25:29 +01:00
tegra186-cpufreq.c cpufreq: Remove CPUFREQ_STICKY flag 2021-02-04 19:23:20 +01:00
tegra194-cpufreq.c cpufreq: Remove CPUFREQ_STICKY flag 2021-02-04 19:23:20 +01:00
ti-cpufreq.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
vexpress-spc-cpufreq.c cpufreq: Remove CPUFREQ_STICKY flag 2021-02-04 19:23:20 +01:00