linux-imx/include
Meng Li 1ec40a175a cpufreq: amd-pstate: Enable amd-pstate preferred core support
commit f3a0523918 upstream.

amd-pstate driver utilizes the functions and data structures
provided by the ITMT architecture to enable the scheduler to
favor scheduling on cores which can be get a higher frequency
with lower voltage. We call it amd-pstate preferrred core.

Here sched_set_itmt_core_prio() is called to set priorities and
sched_set_itmt_support() is called to enable ITMT feature.
amd-pstate driver uses the highest performance value to indicate
the priority of CPU. The higher value has a higher priority.

The initial core rankings are set up by amd-pstate when the
system boots.

Add a variable hw_prefcore in cpudata structure. It will check
if the processor and power firmware support preferred core
feature.

Add one new early parameter `disable` to allow user to disable
the preferred core.

Only when hardware supports preferred core and user set `enabled`
in early parameter, amd pstate driver supports preferred core featue.

Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Wyes Karny <wyes.karny@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Co-developed-by: Perry Yuan <Perry.Yuan@amd.com>
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
Signed-off-by: Meng Li <li.meng@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-09-12 11:11:40 +02:00
..
acpi ACPI: CPPC: Add helper to get the highest performance value 2024-09-12 11:11:40 +02:00
asm-generic vmlinux.lds.h: catch .bss..L* sections into BSS") 2024-08-03 08:53:35 +02:00
clocksource pwm: xilinx: Fix u32 overflow issue in 32-bit width PWM mode. 2024-09-08 07:54:44 +02:00
crypto
drm drm/mipi-dsi: Fix theoretical int overflow in mipi_dsi_generic_write_seq() 2024-08-03 08:53:45 +02:00
dt-bindings
keys
kunit
kvm
linux cpufreq: amd-pstate: Enable amd-pstate preferred core support 2024-09-12 11:11:40 +02:00
math-emu
media media: cec: core: avoid recursive cec_claim_log_addrs 2024-06-12 11:12:43 +02:00
memory
misc
net net/socket: Break down __sys_getsockopt 2024-09-12 11:11:34 +02:00
pcmcia
ras
rdma
rv
scsi scsi: core: Fix the return value of scsi_logical_block_count() 2024-08-29 17:33:52 +02:00
soc net: mscc: ocelot: serialize access to the injection/extraction groups 2024-08-29 17:33:45 +02:00
sound ALSA: ump: Transmit RPN/NRPN message at each MSB/LSB data reception 2024-09-08 07:54:30 +02:00
target
trace platform/x86/intel/ifs: Gen2 Scan test support 2024-08-14 13:58:37 +02:00
uapi Revert "misc: fastrpc: Restrict untrusted app to attach to privileged PD" 2024-08-29 17:33:10 +02:00
ufs scsi: ufs: core: Check LSDBS cap when !mcq 2024-09-08 07:54:29 +02:00
vdso
video
xen