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f96d92fcbb
A lot of code optimization to avoid cases where call paths will end up calling the same writes multiple times and needlessly caching variables. To accomplish this some of the writes are now made into an atomically written "perf" variable. Locking has been overhauled to ensure it only applies to the necessary functions. Tracing has been adjusted to ensure trace events only are used right before writing out to the hardware. NOTE: This is a redo of amd-pstate-v6.15-2025-03-03 with a fixed Fixes tag. -----BEGIN PGP SIGNATURE----- iQJOBAABCgA4FiEECwtuSU6dXvs5GA2aLRkspiR3AnYFAmfJ8w8aHG1hcmlvLmxp bW9uY2llbGxvQGFtZC5jb20ACgkQLRkspiR3AnaugQ/9GvheK3/lWweGF3f4ixdl xS0XTj3DYQBxDvP2H35QRBHaUQQADJnJLjpl1HHy0x9Hem6m3oLZH3QpqKDLb1xX QWzI2JJZ9+KPZRKRwlBnzENcHtBraKX4M/+vvhTo6LSbLfSz47cdZhX6r+9siwPR ofWfusfBlEVPPLaul2Q+oOaQzvwy9Or2q2y3xICzo+Vo3QilSk3pekN8bd2CVd9y L1t1sAeN1StiOLBRbdbh8B2oyJfCCmSI85P8+sEKKR58G1q42Dv4NRl7fgzuJAfO 4ATgX0RjNZcI9yLPmLr5PFmHJYvpHr29MAWKAo5a8VwMu1cBTv0FFkEboRvUgiXl 3+hjQJGkyCZJTxIWhnvKl6Ci00N5apmwc1iMeoa1A1xvvTVkXLmn8RrYIJm2xMCH 27SPJAQx+7e2cRcgjb3orz2Ymj+I9WoGy68/wdmnWM+ZxF1QaKguhM0lrIKFbu7K 6CzVnndVgtYt9kFi/SQ4m1e8zr6RnvPWTxqQxTCVQZBNahe3b7DgnrrNrB/NBU86 QotiTBIxQed6oqHAtL2mFRb9SdTGh9PE5xGcR94qlEGqVtu9KZIFqCDG1OgZKkR5 9yLLai7sUGfMCLuEsdM5hXvf4fOHaGSQ0Cxx2qYWC3DDnS651fMNKh/taBo8RmS3 r18loH2dKvBvOi2beCA5sMk= =VkdW -----END PGP SIGNATURE----- Merge tag 'amd-pstate-v6.15-2025-03-06' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/superm1/linux Merge amd-pstate updates for 6.15 (3/6/25) from Mario Limonciello: "A lot of code optimization to avoid cases where call paths will end up calling the same writes multiple times and needlessly caching variables. To accomplish this some of the writes are now made into an atomically written "perf" variable. Locking has been overhauled to ensure it only applies to the necessary functions. Tracing has been adjusted to ensure trace events only are used right before writing out to the hardware." NOTE: This is a redo of amd-pstate-v6.15-2025-03-03 with a fixed Fixes tag. * tag 'amd-pstate-v6.15-2025-03-06' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/superm1/linux: (29 commits) cpufreq/amd-pstate: Drop actions in amd_pstate_epp_cpu_offline() cpufreq/amd-pstate: Stop caching EPP cpufreq/amd-pstate: Rework CPPC enabling cpufreq/amd-pstate: Drop debug statements for policy setting cpufreq/amd-pstate: Update cppc_req_cached for shared mem EPP writes cpufreq/amd-pstate: Move all EPP tracing into *_update_perf and *_set_epp functions cpufreq/amd-pstate: Cache CPPC request in shared mem case too cpufreq/amd-pstate: Replace all AMD_CPPC_* macros with masks cpufreq/amd-pstate-ut: Adjust variable scope cpufreq/amd-pstate-ut: Run on all of the correct CPUs cpufreq/amd-pstate-ut: Drop SUCCESS and FAIL enums cpufreq/amd-pstate-ut: Allow lowest nonlinear and lowest to be the same cpufreq/amd-pstate-ut: Use _free macro to free put policy cpufreq/amd-pstate: Drop `cppc_cap1_cached` cpufreq/amd-pstate: Overhaul locking cpufreq/amd-pstate: Move perf values into a union cpufreq/amd-pstate: Drop min and max cached frequencies cpufreq/amd-pstate: Show a warning when a CPU fails to setup cpufreq/amd-pstate: Invalidate cppc_req_cached during suspend cpufreq/amd-pstate: Fix the clamping of perf values ... |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.