From: Wyes Karny <wyes.karny@amd.com>
To: Perry Yuan <perry.yuan@amd.com>,
rafael.j.wysocki@intel.com, Mario.Limonciello@amd.com,
ray.huang@amd.com, viresh.kumar@linaro.org
Cc: Deepak.Sharma@amd.com, Nathan.Fontenot@amd.com,
Alexander.Deucher@amd.com, Shimmer.Huang@amd.com,
Xiaojian.Du@amd.com, Li.Meng@amd.com, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v9 06/13] cpufreq: amd-pstate: implement Pstate EPP support for the AMD processors
Date: Fri, 6 Jan 2023 10:52:12 +0530 [thread overview]
Message-ID: <c8e15651-d4d3-bdb1-f9d3-b5efb93fcd5b@amd.com> (raw)
In-Reply-To: <20221225163442.2205660-7-perry.yuan@amd.com>
Hi Perry,
On 12/25/2022 10:04 PM, Perry Yuan wrote:
----------------------------------->8-------------------------------
> +static struct cpufreq_driver amd_pstate_epp_driver = {
> + .flags = CPUFREQ_CONST_LOOPS,
> + .verify = amd_pstate_epp_verify_policy,
> + .setpolicy = amd_pstate_epp_set_policy,
> + .init = amd_pstate_epp_cpu_init,
> + .exit = amd_pstate_epp_cpu_exit,
> + .name = "amd_pstate_epp",
Small nit, amd_pstate_driver name is "amd-pstate", whereas here for
amd_pstate_epp_driver name "amd_pstate_epp" is used.
Should amd_pstate_driver renamed "amd_pstate"?
> + .attr = amd_pstate_epp_attr,
> +};
> +
> static int __init amd_pstate_init(void)
> {
> int ret;
> @@ -656,7 +1012,8 @@ static int __init amd_pstate_init(void)
> /* capability check */
> if (boot_cpu_has(X86_FEATURE_CPPC)) {
> pr_debug("AMD CPPC MSR based functionality is supported\n");
> - amd_pstate_driver.adjust_perf = amd_pstate_adjust_perf;
> + if (cppc_state == AMD_PSTATE_PASSIVE)
> + default_pstate_driver->adjust_perf = amd_pstate_adjust_perf;
> } else {
> pr_debug("AMD CPPC shared memory based functionality is supported\n");
> static_call_update(amd_pstate_enable, cppc_enable);
> @@ -667,14 +1024,13 @@ static int __init amd_pstate_init(void)
> /* enable amd pstate feature */
> ret = amd_pstate_enable(true);
> if (ret) {
> - pr_err("failed to enable amd-pstate with return %d\n", ret);
> + pr_err("failed to enable with return %d\n", ret);
> return ret;
> }
>
> - ret = cpufreq_register_driver(&amd_pstate_driver);
> + ret = cpufreq_register_driver(default_pstate_driver);
> if (ret)
> - pr_err("failed to register amd_pstate_driver with return %d\n",
> - ret);
> + pr_err("failed to register with return %d\n", ret);
>
> return ret;
> }
> @@ -696,6 +1052,12 @@ static int __init amd_pstate_param(char *str)
> if (cppc_state == AMD_PSTATE_DISABLE)
> pr_info("driver is explicitly disabled\n");
>
> + if (cppc_state == AMD_PSTATE_ACTIVE)
> + default_pstate_driver = &amd_pstate_epp_driver;
> +
> + if (cppc_state == AMD_PSTATE_PASSIVE)
> + default_pstate_driver = &amd_pstate_driver;
> +
> return 0;
> }
>
> diff --git a/include/linux/amd-pstate.h b/include/linux/amd-pstate.h
> index dae2ce0f6735..8341a2a2948a 100644
> --- a/include/linux/amd-pstate.h
> +++ b/include/linux/amd-pstate.h
> @@ -47,6 +47,10 @@ struct amd_aperf_mperf {
> * @prev: Last Aperf/Mperf/tsc count value read from register
> * @freq: current cpu frequency value
> * @boost_supported: check whether the Processor or SBIOS supports boost mode
> + * @epp_policy: Last saved policy used to set energy-performance preference
> + * @epp_cached: Cached CPPC energy-performance preference value
> + * @policy: Cpufreq policy value
> + * @cppc_cap1_cached Cached MSR_AMD_CPPC_CAP1 register value
> *
> * The amd_cpudata is key private data for each CPU thread in AMD P-State, and
> * represents all the attributes and goals that AMD P-State requests at runtime.
> @@ -72,6 +76,12 @@ struct amd_cpudata {
>
> u64 freq;
> bool boost_supported;
> +
> + /* EPP feature related attributes*/
> + s16 epp_policy;
> + s16 epp_cached;
> + u32 policy;
> + u64 cppc_cap1_cached;
> };
>
> /*
--
Thanks & Regards,
Wyes
next prev parent reply other threads:[~2023-01-06 5:22 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-25 16:34 [PATCH v9 00/13] Implement AMD Pstate EPP Driver Perry Yuan
2022-12-25 16:34 ` [PATCH v9 01/13] ACPI: CPPC: Add AMD pstate energy performance preference cppc control Perry Yuan
2023-01-05 5:31 ` Wyes Karny
2023-01-05 6:02 ` Yuan, Perry
2022-12-25 16:34 ` [PATCH v9 02/13] Documentation: amd-pstate: add EPP profiles introduction Perry Yuan
2023-01-04 0:29 ` Limonciello, Mario
2023-01-05 3:18 ` Yuan, Perry
2022-12-25 16:34 ` [PATCH v9 03/13] cpufreq: intel_pstate: use common macro definition for Energy Preference Performance(EPP) Perry Yuan
2023-01-04 0:31 ` Limonciello, Mario
2023-01-05 5:49 ` Yuan, Perry
2023-01-05 5:56 ` Mario Limonciello
2023-01-05 6:14 ` Yuan, Perry
2022-12-25 16:34 ` [PATCH v9 04/13] cpufreq: amd-pstate: fix kernel hang issue while amd-pstate unregistering Perry Yuan
2022-12-27 2:53 ` Viresh Kumar
2022-12-27 6:32 ` Yuan, Perry
2022-12-25 16:34 ` [PATCH v9 05/13] cpufreq: amd-pstate: optimize driver working mode selection in amd_pstate_param() Perry Yuan
2023-01-04 0:32 ` Limonciello, Mario
2022-12-25 16:34 ` [PATCH v9 06/13] cpufreq: amd-pstate: implement Pstate EPP support for the AMD processors Perry Yuan
2023-01-04 1:05 ` Limonciello, Mario
2023-01-05 6:20 ` Yuan, Perry
2023-01-06 5:22 ` Wyes Karny [this message]
2023-01-06 5:58 ` Yuan, Perry
2022-12-25 16:34 ` [PATCH v9 07/13] cpufreq: amd-pstate: implement amd pstate cpu online and offline callback Perry Yuan
2022-12-25 16:34 ` [PATCH v9 08/13] cpufreq: amd-pstate: implement suspend and resume callbacks Perry Yuan
2022-12-27 2:52 ` Viresh Kumar
2023-01-05 15:08 ` Yuan, Perry
2022-12-25 16:34 ` [PATCH v9 09/13] cpufreq: amd-pstate: add driver working mode switch support Perry Yuan
2023-01-04 1:06 ` Limonciello, Mario
2023-01-05 6:02 ` Wyes Karny
2023-01-05 6:57 ` Yuan, Perry
2023-01-05 7:29 ` Wyes Karny
2023-01-05 16:03 ` Wyes Karny
2023-01-06 2:52 ` Yuan, Perry
2023-01-06 3:46 ` Wyes Karny
2022-12-25 16:34 ` [PATCH v9 10/13] Documentation: amd-pstate: add amd pstate driver mode introduction Perry Yuan
2022-12-25 16:34 ` [PATCH v9 11/13] Documentation: introduce amd pstate active mode kernel command line options Perry Yuan
2022-12-25 16:34 ` [PATCH v9 12/13] cpufreq: amd-pstate: convert sprintf with sysfs_emit() Perry Yuan
2022-12-25 16:34 ` [PATCH v9 13/13] Documentation: amd-pstate: introduce new global sysfs attributes Perry Yuan
2023-01-04 0:35 ` Limonciello, Mario
2023-01-05 6:21 ` Yuan, Perry
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=c8e15651-d4d3-bdb1-f9d3-b5efb93fcd5b@amd.com \
--to=wyes.karny@amd.com \
--cc=Alexander.Deucher@amd.com \
--cc=Deepak.Sharma@amd.com \
--cc=Li.Meng@amd.com \
--cc=Mario.Limonciello@amd.com \
--cc=Nathan.Fontenot@amd.com \
--cc=Shimmer.Huang@amd.com \
--cc=Xiaojian.Du@amd.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=perry.yuan@amd.com \
--cc=rafael.j.wysocki@intel.com \
--cc=ray.huang@amd.com \
--cc=viresh.kumar@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).