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From: Perry Yuan <perry.yuan@amd.com>
To: <Mario.Limonciello@amd.com>, <gautham.shenoy@amd.com>,
	<Borislav.Petkov@amd.com>
CC: <rafael.j.wysocki@intel.com>, <viresh.kumar@linaro.org>,
	<Alexander.Deucher@amd.com>, <Xinmei.Huang@amd.com>, <Xiaojian.Du@amd.com>,
	<Li.Meng@amd.com>, <linux-pm@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH v11 0/9] AMD Pstate Driver Core Performance Boost
Date: Thu, 13 Jun 2024 15:25:12 +0800
Message-ID: <cover.1718262992.git.perry.yuan@amd.com>
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Hi all,
The patchset series implement CPB(core performance boost) feature for AMD pstate
driver including passisve ,guide and active mode support.

User can change global core frequency boost control with a new sysfs entry:

"/sys/devices/system/cpu/amd_pstate/cpb_boost"

Now it also support to update indivial CPU boost state in sysfs boost file. 
"/sys/devices/system/cpu/cpuX/cpufreq/boost"

And global control will override the indivial CPU boost state by default.

1) globally disable core boost:
$ sudo bash -c "echo 0 > /sys/devices/system/cpu/amd_pstate/cpb_boost"
$ lscpu -ae
CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE    MAXMHZ   MINMHZ      MHZ
  0    0      0    0 0:0:0:0          yes 4201.0000 400.0000 2983.578
  1    0      0    1 1:1:1:0          yes 4201.0000 400.0000 2983.578
  2    0      0    2 2:2:2:0          yes 4201.0000 400.0000 2583.855
  3    0      0    3 3:3:3:0          yes 4201.0000 400.0000 2983.578
  4    0      0    4 4:4:4:0          yes 4201.0000 400.0000 2983.578

2) globally enable core boost:
$ sudo bash -c "echo 1 > /sys/devices/system/cpu/amd_pstate/cpb_boost"
$ lscpu -ae
   0    0      0    0 0:0:0:0          yes 5759.0000 400.0000 2983.578
  1    0      0    1 1:1:1:0          yes 5759.0000 400.0000 2983.578
  2    0      0    2 2:2:2:0          yes 5759.0000 400.0000 2983.578
  3    0      0    3 3:3:3:0          yes 5759.0000 400.0000 2983.578
  4    0      0    4 4:4:4:0          yes 5759.0000 400.0000 2983.578


============================================================================
The V9 patches add per CPU boost control, user can enable/disable CPUs boost
as the below command tested on a laptop system.
# before
  CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE    MAXMHZ   MINMHZ       MHZ
  0    0      0    0 0:0:0:0          yes 4208.0000 400.0000 1666.7740
  1    0      0    0 0:0:0:0          yes 4208.0000 400.0000  400.0000
  2    0      0    1 1:1:1:0          yes 4208.0000 400.0000 3386.1260
  3    0      0    1 1:1:1:0          yes 4208.0000 400.0000  400.0000
$ sudo rdmsr 0xc00102b3 -p 0
10a6

$ sudo bash -c "echo 1 > /sys/devices/system/cpu/cpu0/cpufreq/boost"
# after
  CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE    MAXMHZ   MINMHZ       MHZ
    0    0      0    0 0:0:0:0          yes 3501.0000 400.0000  400.0000
    1    0      0    0 0:0:0:0          yes 4208.0000 400.0000 1391.0690
    2    0      0    1 1:1:1:0          yes 4208.0000 400.0000 3654.4541
    3    0      0    1 1:1:1:0          yes 4208.0000 400.0000  400.0000
$ sudo rdmsr 0xc00102b3 -p 0
108a

rebasd to keep syncing to Mario kernel tree: bleeding-edge
https://git.kernel.org/pub/scm/linux/kernel/git/superm1/linux.git 

Tested result:

CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE    MAXMHZ   MINMHZ       MHZ
  0    0      0    0 0:0:0:0          yes 4354.0000 400.0000 1110.7140
  1    0      0    0 0:0:0:0          yes 4354.0000 400.0000 1110.7140
  2    0      0    1 1:1:1:0          yes 4354.0000 400.0000 1110.7140
  3    0      0    1 1:1:1:0          yes 4354.0000 400.0000 3110.0000
  4    0      0    2 2:2:2:0          yes 4354.0000 400.0000 2732.3569
  5    0      0    2 2:2:2:0          yes 4354.0000 400.0000 1110.7140
  6    0      0    3 3:3:3:0          yes 4354.0000 400.0000 1110.7140
  7    0      0    3 3:3:3:0          yes 4354.0000 400.0000 1110.7140
  8    0      0    4 4:4:4:0          yes 4354.0000 400.0000 2312.2109
  9    0      0    4 4:4:4:0          yes 4354.0000 400.0000 1110.7140
 10    0      0    5 5:5:5:0          yes 4354.0000 400.0000 2310.1011
 11    0      0    5 5:5:5:0          yes 4354.0000 400.0000 1110.7140

sudo bash -c "echo 0 > /sys/devices/system/cpu/cpu11/cpufreq/boost"
sudo bash -c "echo 0 > /sys/devices/system/cpu/cpu10/cpufreq/boost"
sudo bash -c "echo 0 > /sys/devices/system/cpu/cpu9/cpufreq/boost"

CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE    MAXMHZ   MINMHZ       MHZ
  0    0      0    0 0:0:0:0          yes 4354.0000 400.0000 1242.7240
  1    0      0    0 0:0:0:0          yes 4354.0000 400.0000 1110.7140
  2    0      0    1 1:1:1:0          yes 4354.0000 400.0000 2754.5710
  3    0      0    1 1:1:1:0          yes 4354.0000 400.0000 2659.8159
  4    0      0    2 2:2:2:0          yes 4354.0000 400.0000 2308.9929
  5    0      0    2 2:2:2:0          yes 4354.0000 400.0000 1110.7140
  6    0      0    3 3:3:3:0          yes 4354.0000 400.0000 1110.7140
  7    0      0    3 3:3:3:0          yes 4354.0000 400.0000 1110.7140
  8    0      0    4 4:4:4:0          yes 4354.0000 400.0000 1110.7140
  9    0      0    4 4:4:4:0          yes 2801.0000 400.0000 1110.7140
 10    0      0    5 5:5:5:0          yes 2801.0000 400.0000 1110.7140
 11    0      0    5 5:5:5:0          yes 2801.0000 400.0000 1110.7140

sudo bash -c "echo 0 > /sys/devices/system/cpu/amd_pstate/cpb_boost"

CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE    MAXMHZ   MINMHZ       MHZ
  0    0      0    0 0:0:0:0          yes 2801.0000 400.0000 1233.8630
  1    0      0    0 0:0:0:0          yes 2801.0000 400.0000 1110.7140
  2    0      0    1 1:1:1:0          yes 2801.0000 400.0000 2714.4851
  3    0      0    1 1:1:1:0          yes 2801.0000 400.0000 2732.3569
  4    0      0    2 2:2:2:0          yes 2801.0000 400.0000 2564.2639
  5    0      0    2 2:2:2:0          yes 2801.0000 400.0000 1110.7140
  6    0      0    3 3:3:3:0          yes 2801.0000 400.0000 2732.3569
  7    0      0    3 3:3:3:0          yes 2801.0000 400.0000 1110.7140
  8    0      0    4 4:4:4:0          yes 2801.0000 400.0000 1233.8660
  9    0      0    4 4:4:4:0          yes 2801.0000 400.0000 1110.7140
 10    0      0    5 5:5:5:0          yes 2801.0000 400.0000 1233.6630
 11    0      0    5 5:5:5:0          yes 2801.0000 400.0000 1233.5050

sudo bash -c "echo 1 > /sys/devices/system/cpu/amd_pstate/cpb_boost"

CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE    MAXMHZ   MINMHZ       MHZ
  0    0      0    0 0:0:0:0          yes 4354.0000 400.0000 1234.0200
  1    0      0    0 0:0:0:0          yes 4354.0000 400.0000 1110.7140
  2    0      0    1 1:1:1:0          yes 4354.0000 400.0000 1110.7140
  3    0      0    1 1:1:1:0          yes 4354.0000 400.0000 1110.7140
  4    0      0    2 2:2:2:0          yes 4354.0000 400.0000 1110.7140
  5    0      0    2 2:2:2:0          yes 4354.0000 400.0000 1110.7140
  6    0      0    3 3:3:3:0          yes 4354.0000 400.0000 2278.8491
  7    0      0    3 3:3:3:0          yes 4354.0000 400.0000 2732.3569
  8    0      0    4 4:4:4:0          yes 4354.0000 400.0000 1110.7140
  9    0      0    4 4:4:4:0          yes 4354.0000 400.0000 1110.7140
 10    0      0    5 5:5:5:0          yes 4354.0000 400.0000 2353.0449
 11    0      0    5 5:5:5:0          yes 4354.0000 400.0000 1110.7140


Perry.

Changes from v10:
 * rework the boost interface with cpufreq core boost control, align the sysfs file 
  created from cpufreq.c and allow indivial CPU boost control (Mario)
 * fix the pr_warn code format with %zd (Oleksandr Natalenko)
 * replace sscanf with kstrtobool for cpufreq.c (new)
 * drop the boost sysfs file creation from amd pstate patch #6
 * add init_boost for cpufreq.c to unify the boost file creation(Mario)
 * add set_boost callback for EPP driver mode
 * fix syncronization issue for indivial boost control and global CPB control, now the
   two control way will keep syncronization after anyone CPU boost state changed.
 * rebased to Mario kernel tree: bleeding-edge
 * run testing on local system, no regression issue found so far.

Changes from v9:
 * change per CPU boost sysfs file name to `boost` (Mario)
 * rebased to latest linux-pm/bleeding-edge

Changes from v8:
 * pick RB flag for patch 4 (Mario)
 * change boot_cpu_has to cpu_feature_enabled for patch 2 (Boris)
 * merge patch 6 into patch 3 (Mario)
 * add two patch for per CPU boost control patch 6 & 7(Mario)
 * rebased to latest linux-pm/bleeding-edge

Changes from v7:
 * fix the mutext locking issue in the sysfs file update(Ray, Mario)
 * pick ack flag from Ray
 * use X86_FEATURE_CPB to verify the CPB function in Patch #2(Ray)
 * rerun the testing to check function works well
 * rebased to linux-pm/bleeding-edge latest

Changes from v6:
 * reword patch 2 commit log (Gautham)
 * update cover letter description(Gautham)
 * rebase to kernel v6.9-rc5

Changes from v4:
 * drop the legacy boost remove patch, let us keep the legacy interface
   in case some applications break.
 * rebase to linux-pm/bleeding-edge branch
 * rework the patchset base on [PATCH v8 0/8] AMD Pstate Fixes And
   Enhancements which has some intial work done there.

Changes from v4:
 * move MSR_K7_HWCR_CPB_DIS_BIT into msr-index.h
 * pick RB flag from Gautham R. Shenoy
 * add Cc Oleksandr Natalenko <oleksandr@natalenko.name>
 * rebase to latest linux-pm/bleeding-edge branch
 * rebase the patch set on top of [PATCH v7 0/6] AMD Pstate Fixes And Enhancements
 * update  [PATCH v7 2/6] to use MSR_K7_HWCR_CPB_DIS_BIT

Changes from v3:
 * rebased to linux-pm/bleeding-edge v6.8
 * rename global to amd_pstate_global_params(Oleksandr Natalenko)
 * remove comments for boot_supported in amd_pstate.h
 * fix the compiler warning for amd-pstate-ut.ko
 * use for_each_online_cpu in cpb_boost_store which fix the null pointer
   error during testing
 * fix the max frequency value to be KHz when cpb boost disabled(Gautham R. Shenoy)

Changes from v2:
 * move global struct to amd-pstate.h
 * fix the amd-pstate-ut with new cpb control interface

Changes from v1:
 * drop suspend/resume fix patch 6/7 because of the fix should be in
   another fix series instead of CPB feature
 * move the set_boost remove patch to the last(Mario)
 * Fix commit info with "Closes:" (Mario)
 * simplified global.cpb_supported initialization(Mario)
 * Add guide mode support for CPB control
 * Fixed some Doc typos and add guide mode info to Doc as well.

v1: https://lore.kernel.org/all/cover.1706255676.git.perry.yuan@amd.com/
v2: https://lore.kernel.org/lkml/cover.1707047943.git.perry.yuan@amd.com/
v3: https://lore.kernel.org/lkml/cover.1707297581.git.perry.yuan@amd.com/
v4: https://lore.kernel.org/lkml/cover.1710322310.git.perry.yuan@amd.com/
v5: https://lore.kernel.org/lkml/cover.1710473712.git.perry.yuan@amd.com/
v6: https://lore.kernel.org/lkml/cover.1710754236.git.perry.yuan@amd.com/
v7: https://lore.kernel.org/lkml/cover.1713861200.git.perry.yuan@amd.com/
v8: https://lore.kernel.org/lkml/cover.1714112854.git.perry.yuan@amd.com/
v9: https://lore.kernel.org/lkml/cover.1714989803.git.perry.yuan@amd.com/
v10: https://lore.kernel.org/lkml/cover.1715152592.git.perry.yuan@amd.com/

Perry Yuan (9):
  cpufreq: acpi: move MSR_K7_HWCR_CPB_DIS_BIT into msr-index.h
  cpufreq: simplify boolean parsing with kstrtobool in store function
  cpufreq: introduce init_boost callback to initialize boost state for
    pstate drivers
  cpufreq: amd-pstate: initialize new core precision boost state
  cpufreq: amd-pstate: implement cpb_boost sysfs entry for boost control
  cpufreq: amd-pstate: Add set_boost callback for active mode
  cpufreq: amd-pstate: fix the MSR highest perf will be reset issue
    while cpb boost off
  Documentation: cpufreq: amd-pstate: introduce the new cpu boost
    control method
  Documentation: cpufreq: amd-pstate: update doc for Per CPU boost
    control method

 Documentation/admin-guide/pm/amd-pstate.rst |  30 +++
 arch/x86/include/asm/msr-index.h            |   2 +
 drivers/cpufreq/acpi-cpufreq.c              |   2 -
 drivers/cpufreq/amd-pstate-ut.c             |   2 +-
 drivers/cpufreq/amd-pstate.c                | 197 +++++++++++++++++---
 drivers/cpufreq/amd-pstate.h                |  14 ++
 drivers/cpufreq/cpufreq.c                   |  23 ++-
 include/linux/cpufreq.h                     |   2 +
 8 files changed, 237 insertions(+), 35 deletions(-)

-- 
2.34.1