| Message ID | 20221207154648.233759-3-wyes.karny@amd.com (mailing list archive) |
|---|---|
| State | Deferred, archived |
| Headers | show |
| Series | amd_pstate: Add guided autonomous mode support | expand |
On Wed, Dec 07, 2022 at 03:46:46PM +0000, Wyes Karny wrote: > + amd_pstate= [X86] > + disable > + Do not enable amd_pstate as the default > + scaling driver for the supported processors > + passive > + Use amd_pstate as a scaling driver, driver requests a > + desired performance on this abstract scale and the power > + management firmware translates the requests into actual > + hardware states (core frequency, data fabric and memory > + clocks etc.) Device drivers request certain performance level? > + guided > + Activate guided autonomous mode. Driver requests minimum > + performance and maximum performance and the PMFW autonomously > + selects frequencies in this range. Same here. Thanks.
Hi Bagas Sanjaya, On 12/8/2022 8:12 AM, Bagas Sanjaya wrote: > On Wed, Dec 07, 2022 at 03:46:46PM +0000, Wyes Karny wrote: >> + amd_pstate= [X86] >> + disable >> + Do not enable amd_pstate as the default >> + scaling driver for the supported processors >> + passive >> + Use amd_pstate as a scaling driver, driver requests a >> + desired performance on this abstract scale and the power >> + management firmware translates the requests into actual >> + hardware states (core frequency, data fabric and memory >> + clocks etc.) > > Device drivers request certain performance level? What about the below wording? "" passive Use amd_pstate with passive mode as a scaling driver. In this mode autonomous selection is disabled. Driver requests a desired performance level and PMFW tires to match the same performance level (if it is satisfied by guaranteed performance level). "" Perry, let me know if it looks fine to you? > >> + guided >> + Activate guided autonomous mode. Driver requests minimum >> + performance and maximum performance and the PMFW autonomously >> + selects frequencies in this range. > > Same here. I'll rewrite this as: guided Activate guided autonomous mode. Driver requests minimum and maximum performance level and the PMFW autonomously selects a performance level in this range and appropriate to the current workload. > > Thanks. >
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 75e57afba77e..143a38ce27e5 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -339,6 +339,21 @@ This mode requires kvm-amd.avic=1. (Default when IOMMU HW support is present.) + amd_pstate= [X86] + disable + Do not enable amd_pstate as the default + scaling driver for the supported processors + passive + Use amd_pstate as a scaling driver, driver requests a + desired performance on this abstract scale and the power + management firmware translates the requests into actual + hardware states (core frequency, data fabric and memory + clocks etc.) + guided + Activate guided autonomous mode. Driver requests minimum + performance and maximum performance and the PMFW autonomously + selects frequencies in this range. + amijoy.map= [HW,JOY] Amiga joystick support Map of devices attached to JOY0DAT and JOY1DAT Format: <a>,<b> @@ -6959,18 +6974,3 @@ memory, and other data can't be written using xmon commands. off xmon is disabled. - - amd_pstate= [X86] - disable - Do not enable amd_pstate as the default - scaling driver for the supported processors - passive - Use amd_pstate as a scaling driver, driver requests a - desired performance on this abstract scale and the power - management firmware translates the requests into actual - hardware states (core frequency, data fabric and memory - clocks etc.) - guided - Activate guided autonomous mode. Driver requests minimum - performance and maximum performance and the PMFW autonomously - selects frequencies in this range.
Move amd_pstate command line param description to correct alphabetical order. Signed-off-by: Wyes Karny <wyes.karny@amd.com> --- .../admin-guide/kernel-parameters.txt | 30 +++++++++---------- 1 file changed, 15 insertions(+), 15 deletions(-)