leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity
49a474c7ba
linux/drivers/platform/x86
History
Srinivas Pandruvada 49a474c7ba platform/x86: Add support for Uncore frequency control 
Some server users set limits on the uncore frequency using MSR 620H, while
running latency sensitive workloads. Here uncore frequency controls
RING/LLC(last-level cache) clocks.

But MSR control is not always possible from the user space, so this driver
provides a sysfs interface to set max and min frequency limits. This MSR
620H is a die scoped in multi-die system or package scoped in non multi-die
systems.

When this driver is loaded, a new directory is created under
 /sys/devices/system/cpu.

For example on a two package Skylake server:
$cd /sys/devices/system/cpu/intel_uncore_frequency

$ls
package_00_die_00 package_01_die_00

$ls package_00_die_00
max_freq_khz  min_freq_khz  initial_max_freq_khz
initial_min_freq_khz

$grep . *
    max_freq_khz:2400000
    min_freq_khz:1200000
    initial_max_freq_khz:2400000
    initial_min_freq_khz:1200000

Here, initial_max_freq_khz and initial_min_freq_khz are read only
attributes to show power up or initial values of max and min frequencies
respectively. Other attributes are read-write, so that users can modify.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2020-01-13 21:02:36 +02:00
..
intel_speed_select_if platform/x86: ISST: Allow additional TRL MSRs 2019-09-09 13:19:35 +03:00
acer-wireless.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
acer-wmi.c platform/x86: acer-wmi: Switch to acpi_dev_get_first_match_dev() 2019-07-30 14:12:51 +03:00
acerhdf.c treewide: Rename Peter Feuerer to Peter Kaestle 2019-10-21 12:17:23 +03:00
alienware-wmi.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
amilo-rfkill.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
apple-gmux.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
asus-laptop.c platform-drivers-x86 for v5.5-1 2019-12-01 18:24:25 -08:00
asus-nb-wmi.c platform/x86: asus-nb-wmi: Support ALS on the Zenbook UX430UNR 2019-08-16 12:38:48 +03:00
asus-wireless.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
asus-wmi.c platform/x86: asus-wmi: Fix keyboard brightness cannot be set to 0 2020-01-13 11:51:27 +02:00
asus-wmi.h platform/x86: asus-wmi: Only Tell EC the OS will handle display hotkeys from asus_nb_wmi 2019-06-12 11:54:16 +03:00
classmate-laptop.c platform/x86: classmate-laptop: remove unused variable 2019-10-15 10:55:10 +03:00
compal-laptop.c platform/x86: compal-laptop: Initialize "value" in ec_read_u8() 2019-09-07 21:16:09 +03:00
dcdbas.c docs: driver-api: add a series of orphaned documents 2019-07-15 11:03:02 -03:00
dcdbas.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 287 2019-06-05 17:36:37 +02:00
dell_rbu.c docs: admin-guide: Move Dell RBU document from driver-api 2019-10-15 12:35:39 -06:00
dell-laptop.c platform/x86: dell-laptop: disable kbd backlight on Inspiron 10xx 2019-10-15 10:55:09 +03:00
dell-rbtn.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
dell-rbtn.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
dell-smbios-base.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
dell-smbios-smm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
dell-smbios-wmi.c platform-drivers-x86 for v5.3-1 2019-07-14 16:51:47 -07:00
dell-smbios.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
dell-smo8800.c Merge branch 'i2c/for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2019-07-15 21:10:39 -07:00
dell-wmi-aio.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
dell-wmi-descriptor.c platform-drivers-x86 for v5.3-1 2019-07-14 16:51:47 -07:00
dell-wmi-descriptor.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
dell-wmi-led.c platform/x86: dell-wmi-led: Adjust instance of wmi_evaluate_method calls to 0 2017-06-28 09:01:36 -07:00
dell-wmi.c platform/x86: dell-wmi: Use existing defined KBD_LED_* magic values 2019-07-30 14:12:51 +03:00
eeepc-laptop.c platform/x86: eeepc-laptop: Use pr_warn instead of pr_warning 2019-10-18 15:00:48 +02:00
eeepc-wmi.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
fujitsu-laptop.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1 2019-05-21 11:28:39 +02:00
fujitsu-tablet.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 414 2019-06-05 17:37:14 +02:00
gpd-pocket-fan.c platform/x86: GPD pocket fan: Allow somewhat lower/higher temperature limits 2020-01-10 11:57:22 +02:00
hdaps.c platform/x86: hdaps: switch to using polled mode of input devices 2019-10-15 10:55:09 +03:00
hp_accel.c platform/x86: hp_accel: Add support for HP ZBook 17 G5 2019-07-29 18:31:48 +03:00
hp-wireless.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1 2019-05-21 11:28:39 +02:00
hp-wmi.c platform/x86: hp-wmi: Make buffer for HPWMI_FEATURE2_QUERY 128 bytes 2019-12-20 19:00:50 +02:00
huawei-wmi.c platform/x86: huawei-wmi: Remove unnecessary battery mutex 2019-10-21 12:17:30 +03:00
i2c-multi-instantiate.c platform/x86: i2c-multi-instantiate: Fail the probe if no IRQ provided 2019-10-15 10:55:10 +03:00
ibm_rtl.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
ideapad-laptop.c platform-drivers-x86 for v5.3-1 2019-07-14 16:51:47 -07:00
intel_atomisp2_pm.c platform/x86: intel_atomisp2_pm: Spelling fixes 2020-01-10 11:57:22 +02:00
intel_bxtwc_tmu.c platform/x86: intel_bxtwc_tmu: Remove dev_err() usage after platform_get_irq() 2019-08-01 18:03:02 +03:00
intel_cht_int33fe_common.c platform/x86: intel_cht_int33fe: Split code to Micro-B and Type-C 2019-10-15 10:55:10 +03:00
intel_cht_int33fe_common.h platform/x86: intel_cht_int33fe: Split code to Micro-B and Type-C 2019-10-15 10:55:10 +03:00
intel_cht_int33fe_microb.c platform/x86: intel_cht_int33fe: Split code to Micro-B and Type-C 2019-10-15 10:55:10 +03:00
intel_cht_int33fe_typec.c platform/x86: intel_cht_int33fe: Split code to Micro-B and Type-C 2019-10-15 10:55:10 +03:00
intel_chtdc_ti_pwrbtn.c platform/x86: intel_chtdc_ti_pwrbtn: Add SPDX identifier 2018-09-27 12:18:16 +03:00
intel_int0002_vgpio.c platform/x86: intel_int0002_vgpio: Pass irqchip when adding gpiochip 2019-10-27 02:10:58 +03:00
intel_ips.c platform/x86: intel_ips: Convert to use DEFINE_SHOW_ATTRIBUTE macro 2018-12-03 21:40:03 +02:00
intel_ips.h platform/x86: intel-ips: Use the correct style for SPDX License Identifier 2020-01-10 11:57:21 +02:00
intel_menlow.c platform/x86: intel_menlow: avoid null pointer deference error 2019-06-12 12:42:27 +03:00
intel_mid_powerbtn.c platform-drivers-x86 for v4.20-1 2018-11-01 08:42:21 -07:00
intel_mid_thermal.c platform/x86: intel_mid_thermal: Convert to use SPDX identifier 2018-09-27 12:18:17 +03:00
intel_mrfld_pwrbtn.c platform/x86: Add support for Basin Cove power button 2019-05-09 00:33:03 +03:00
intel_oaktrail.c platform/x86: intel_oaktrail: Use pr_warn instead of pr_warning 2019-10-18 15:01:35 +02:00
intel_pmc_core_pltdrv.c platform/x86: intel_pmc_core: update Comet Lake platform driver 2020-01-10 11:57:22 +02:00
intel_pmc_core.c platform/x86: intel_pmc_core: Fix spelling of MHz unit 2020-01-10 11:50:32 +02:00
intel_pmc_core.h platform/x86: intel-ips: Use the correct style for SPDX License Identifier 2020-01-10 11:57:21 +02:00
intel_pmc_ipc.c platform/x86: intel_pmc_ipc: Remove dev_err() usage after platform_get_irq() 2019-08-01 18:03:02 +03:00
intel_punit_ipc.c platform/x86: intel_punit_ipc: Drop useless label 2019-10-27 02:10:57 +03:00
intel_scu_ipc.c platform/x86: intel_scu_ipc: Convert to use SPDX identifier 2018-09-27 12:18:19 +03:00
intel_scu_ipcutil.c platform/x86: intel_scu_ipc: Convert to use SPDX identifier 2018-09-27 12:18:19 +03:00
intel_telemetry_core.c platform/x86: intel_telemetry: Convert to use SPDX identifier 2018-09-27 12:18:20 +03:00
intel_telemetry_debugfs.c platform/x86: intel_telemetry_debugfs: Respect error code of kstrtou32_from_user() 2020-01-10 11:50:32 +02:00
intel_telemetry_pltdrv.c platform/x86: intel_telemetry_pltdrv: use devm_platform_ioremap_resource() 2020-01-10 11:50:32 +02:00
intel_turbo_max_3.c platform/x86: intel_turbo_max_3: Convert to use SPDX identifier 2018-09-27 12:18:20 +03:00
intel-hid.c ACPI: PM: s2idle: Always set up EC GPE for system wakeup 2019-08-21 23:56:05 +02:00
intel-rst.c platform/x86: intel-rst: Convert to use SPDX identifier 2018-09-27 12:18:19 +03:00
intel-smartconnect.c platform/x86: intel-smartconnect: Convert to use SPDX identifier 2018-09-27 12:18:19 +03:00
intel-uncore-frequency.c platform/x86: Add support for Uncore frequency control 2020-01-13 21:02:36 +02:00
intel-vbtn.c ACPI: PM: s2idle: Always set up EC GPE for system wakeup 2019-08-21 23:56:05 +02:00
intel-wmi-thunderbolt.c platform/x86: wmi: add context argument to the probe function 2019-06-17 15:22:47 +03:00
Kconfig platform/x86: Add support for Uncore frequency control 2020-01-13 21:02:36 +02:00
lg-laptop.c platform/x86: Add LG Gram laptop special features driver 2018-10-19 19:21:57 +03:00
Makefile platform/x86: Add support for Uncore frequency control 2020-01-13 21:02:36 +02:00
mlx-platform.c platform/x86: mlx-platform: Fix error handling in mlxplat_init() 2019-07-12 16:00:38 +03:00
msi-laptop.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1 2019-05-21 11:28:39 +02:00
msi-wmi.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
mxm-wmi.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
panasonic-laptop.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 392 2019-06-05 17:37:11 +02:00
pcengines-apuv2.c platform/x86: pcengines-apuv2: Spelling fixes in the driver 2019-12-20 19:01:59 +02:00
peaq-wmi.c platform/x86: peaq-wmi: switch to using polled mode of input devices 2019-10-15 10:55:09 +03:00
pmc_atom.c platform/x86: pmc_atom: Add Siemens CONNECT X300 to critclk_systems DMI table 2019-12-20 19:00:50 +02:00
samsung-laptop.c platform-drivers-x86 for v5.3-1 2019-07-14 16:51:47 -07:00
samsung-q10.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
sony-laptop.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
surface3_button.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
surface3-wmi.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
surfacepro3_button.c platform/x86: surfacepro3_button: Fix device check 2019-07-28 12:58:40 +03:00
system76_acpi.c platform/x86: Add System76 ACPI driver 2019-10-15 10:55:11 +03:00
tc1100-wmi.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
thinkpad_acpi.c platform/x86: thinkpad_acpi: Add ThinkPad PrivacyGuard 2019-09-07 21:16:09 +03:00
topstar-laptop.c platform/x86: topstar-laptop: replace licence text with SPDX tag 2018-02-23 18:43:42 +02:00
toshiba_acpi.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 7 2019-05-21 11:28:40 +02:00
toshiba_bluetooth.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
toshiba_haps.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
toshiba-wmi.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
touchscreen_dmi.c platform/x86: touchscreen_dmi: Fix indentation in several places 2020-01-10 11:57:22 +02:00
wmi-bmof.c platform-drivers-x86 for v5.3-1 2019-07-14 16:51:47 -07:00
wmi.c compat_ioctl: move more drivers to compat_ptr_ioctl 2019-10-23 17:23:44 +02:00
xiaomi-wmi.c platform/x86: wmi: add Xiaomi WMI key driver 2019-06-29 15:56:36 +03:00
xo1-rfkill.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
xo15-ebook.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00