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linux/drivers/cpufreq
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Wyes Karny 919f455769 cpufreq: amd-pstate: cpufreq: amd-pstate: reset MSR_AMD_PERF_CTL register at init 
MSR_AMD_PERF_CTL is guaranteed to be 0 on a cold boot. However, on a
kexec boot, for instance, it may have a non-zero value (if the cpu was
in a non-P0 Pstate).  In such cases, the cores with non-P0 Pstates at
boot will never be pushed to P0, let alone boost frequencies.

Kexec is a common workflow for reboot on Linux and this creates a
regression in performance. Fix it by explicitly setting the
MSR_AMD_PERF_CTL to 0 during amd_pstate driver init.

Cc: All applicable <stable@vger.kernel.org>
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Tested-by: Wyes Karny <wyes.karny@amd.com>
Signed-off-by: Wyes Karny <wyes.karny@amd.com>
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-11-22 19:57:14 +01:00
..
acpi-cpufreq.c
cpufreq: ACPI: Add Zhaoxin/Centaur turbo boost control interface support
2022-06-29 20:14:39 +02:00
amd_freq_sensitivity.c
cpufreq: Introducing CPUFREQ_RELATION_E
2021-10-05 16:33:05 +02:00
amd-pstate-trace.c
cpufreq: amd-pstate: Add trace for AMD P-State module
2021-12-30 18:51:39 +01:00
amd-pstate-trace.h
cpufreq: amd-pstate: Add more tracepoint for AMD P-State module
2022-03-09 19:53:01 +01:00
amd-pstate-ut.c
cpufreq: amd-pstate: modify type in argument 2 for filp_open
2022-10-05 11:05:18 -06:00
amd-pstate.c
cpufreq: amd-pstate: cpufreq: amd-pstate: reset MSR_AMD_PERF_CTL register at init
2022-11-22 19:57:14 +01:00
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: forbid cpufreq for 1.2 GHz variant
2021-08-09 09:31:22 +05:30
bmips-cpufreq.c
cpufreq: bmips-cpufreq: Use module_init and add module_exit
2022-08-30 13:49:23 +05:30
brcmstb-avs-cpufreq.c
cpufreq: brcmstb-avs-cpufreq: Fix resource leaks in ->remove()
2021-01-18 12:23:43 +05:30
cppc_cpufreq.c
ACPI: CPPC: Disable FIE if registers in PCC regions
2022-09-24 18:43:46 +02:00
cpufreq_conservative.c
cpufreq: unify show() and store() naming and use __ATTR_XX
2022-03-10 19:55:05 +01:00
cpufreq_governor_attr_set.c
cpufreq: Move to_gov_attr_set() to cpufreq.h
2022-02-04 19:22:34 +01:00
cpufreq_governor.c
cpufreq: governor: Use kobject release() method to free dbs_data
2022-04-13 15:22:41 +02:00
cpufreq_governor.h
cpufreq: governor: Use kobject release() method to free dbs_data
2022-04-13 15:22:41 +02:00
cpufreq_ondemand.c
cpufreq: ondemand: Use cpumask_var_t for on-stack cpu mask
2022-07-25 20:38:01 +02:00
cpufreq_ondemand.h
…
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: Clean up local variable in cpufreq_stats_create_table()
2021-06-07 13:47:57 +02:00
cpufreq_userspace.c
cpufreq: Register governors at core_initcall
2020-07-02 13:03:30 +02:00
cpufreq-dt-platdev.c
cpufreq: Add SM6115 to cpufreq-dt-platdev blocklist
2022-08-16 10:50:49 +05:30
cpufreq-dt.c
cpufreq: dt: Switch to use dev_err_probe() helper
2022-10-18 16:22:25 +05:30
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: check only freq_table in __resolve_freq()
2022-08-23 20:00:52 +02:00
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: Fix scaling_{available,boost}_frequencies_show() comments
2021-03-26 17:43:48 +01:00
gx-suspmod.c
cpufreq: Avoid creating excessively large stack frames
2020-01-27 10:33:33 +01:00
highbank-cpufreq.c
cpufreq: Add __init annotation to module init funcs
2022-09-26 11:15:04 +05:30
ia64-acpi-cpufreq.c
ia64: fix format string for ia64-acpi-cpu-freq
2021-03-19 17:26:20 +01:00
imx6q-cpufreq.c
cpufreq: imx6q: Switch to use dev_err_probe() helper
2022-10-18 16:22:25 +05:30
imx-cpufreq-dt.c
OPP: Migrate set-supported-hw API to use set-config helpers
2022-07-08 11:27:48 +05:30
intel_pstate.c
cpufreq: intel_pstate: hybrid: Use known scaling factor for P-cores
2022-10-25 15:09:23 +02:00
Kconfig
cpufreq: loongson2: fix Kconfig "its" grammar
2022-07-25 20:34:56 +02:00
Kconfig.arm
nvmem: prefix all symbols with NVMEM_
2022-09-24 14:54:38 +02:00
Kconfig.powerpc
cpufreq: Fix Kconfig indentation
2019-11-29 11:52:02 +01:00
Kconfig.x86
cpufreq: amd-pstate: Add explanation for X86_AMD_PSTATE_UT
2022-10-05 11:05:18 -06:00
kirkwood-cpufreq.c
cpufreq: kirkwood: convert to devm_platform_ioremap_resource
2020-01-07 13:29:58 +05:30
longhaul.c
cpufreq: longhaul: Replace acpi_bus_get_device()
2022-02-04 19:31:49 +01:00
longhaul.h
…
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
cpufreq: loongson2: Remove unused linux/sched.h headers
2021-06-07 17:43:52 +02:00
Makefile
cpufreq: amd-pstate: Add test module for amd-pstate driver
2022-10-05 11:05:17 -06:00
maple-cpufreq.c
Merge branch 'pm-cpufreq'
2019-07-18 09:49:30 +02:00
mediatek-cpufreq-hw.c
PM: EM: convert power field to micro-Watts precision and align drivers
2022-07-15 19:17:30 +02:00
mediatek-cpufreq.c
cpufreq: mediatek: fix error return code in mtk_cpu_dvfs_info_init()
2022-07-13 16:53:00 +05:30
mvebu-cpufreq.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_56.RULE (part 2)
2022-06-10 14:51:35 +02:00
omap-cpufreq.c
cpufreq: omap: Use .register_em() to register with energy model
2021-08-12 09:54:07 +05:30
p4-clockmod.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
pasemi-cpufreq.c
cpufreq: Prepare cleanup of powerpc's asm/prom.h
2022-04-13 17:18:45 +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: pmac32-cpufreq: Fix refcount leak bug
2022-06-28 13:34:51 +05:30
pmac64-cpufreq.c
cpufreq: Prepare cleanup of powerpc's asm/prom.h
2022-04-13 17:18:45 +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
…
powernow-k8.c
cpufreq: powernow-k8: Re-order the init checks
2022-03-17 14:54:11 +01:00
powernow-k8.h
…
powernv-cpufreq.c
cpufreq: Introducing CPUFREQ_RELATION_E
2021-10-05 16:33:05 +02:00
ppc_cbe_cpufreq_pervasive.c
…
ppc_cbe_cpufreq_pmi.c
cpufreq: Prepare cleanup of powerpc's asm/prom.h
2022-04-13 17:18:45 +02:00
ppc_cbe_cpufreq.c
cpufreq: Prepare cleanup of powerpc's asm/prom.h
2022-04-13 17:18:45 +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
cpufreq: pxa3: move clk register access to clk driver
2022-05-07 22:55:49 +02:00
pxa3xx-cpufreq.c
cpufreq: pxa3: move clk register access to clk driver
2022-05-07 22:55:49 +02:00
qcom-cpufreq-hw.c
cpufreq: qcom-cpufreq-hw: Add cpufreq qos for LMh
2022-09-26 14:05:45 +05:30
qcom-cpufreq-nvmem.c
cpufreq: qcom-nvmem: Switch to use dev_err_probe() helper
2022-10-18 16:22:26 +05:30
qoriq-cpufreq.c
drivers: cpufreq: Add missing of_node_put() in qoriq-cpufreq.c
2022-06-28 13:34:45 +05:30
raspberrypi-cpufreq.c
…
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: s3c244x: add fallthrough comments for switch
2021-10-04 11:43:14 +05:30
s5pv210-cpufreq.c
cpufreq: Introducing CPUFREQ_RELATION_E
2021-10-05 16:33:05 +02:00
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: sc520_freq: add 'fallthrough' to one case
2021-05-21 18:52:13 +02:00
scmi-cpufreq.c
cpufreq: scmi: Support the power scale in micro-Watts in SCMI v3.1
2022-07-15 19:17:30 +02:00
scpi-cpufreq.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_320.RULE
2022-06-10 14:51:36 +02:00
sh-cpufreq.c
cpufreq: sh: Remove sh_cpufreq_cpu_ready()
2021-09-02 18:04:17 +02:00
sparc-us2e-cpufreq.c
…
sparc-us3-cpufreq.c
…
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
…
speedstep-smi.c
cpufreq: Convert to new X86 CPU match macros
2020-03-24 21:31:27 +01:00
sti-cpufreq.c
cpufreq: Add __init annotation to module init funcs
2022-09-26 11:15:04 +05:30
sun50i-cpufreq-nvmem.c
cpufreq: sun50i: Switch to use dev_err_probe() helper
2022-10-18 16:22:26 +05:30
tegra20-cpufreq.c
OPP: Migrate set-supported-hw API to use set-config helpers
2022-07-08 11:27:48 +05:30
tegra124-cpufreq.c
cpufreq: tegra124: Add suspend and resume support
2019-10-29 13:25:29 +01:00
tegra186-cpufreq.c
cpufreq: tegra186/tegra194: Handle errors in BPMP response
2021-10-04 12:31:36 +05:30
tegra194-cpufreq.c
cpufreq: tegra194: Fix module loading
2022-10-18 16:22:25 +05:30
ti-cpufreq.c
cpufreq: Add __init annotation to module init funcs
2022-09-26 11:15:04 +05:30
vexpress-spc-cpufreq.c
cpufreq: vexpress: Drop unused variable
2021-10-04 11:25:21 +05:30