From: Viresh Kumar <viresh.kumar@linaro.org>
To: Ionela Voinescu <ionela.voinescu@arm.com>
Cc: rjw@rjwysocki.net, lenb@kernel.org, sudeep.holla@arm.com,
morten.rasmussen@arm.com, jeremy.linton@arm.com,
linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 5/8] cppc_cpufreq: use policy->cpu as driver of frequency setting
Date: Mon, 9 Nov 2020 12:35:31 +0530 [thread overview]
Message-ID: <20201109070531.jqoury5vniu3phdo@vireshk-i7> (raw)
In-Reply-To: <20201105125524.4409-6-ionela.voinescu@arm.com>
On 05-11-20, 12:55, Ionela Voinescu wrote:
> Considering only the currently supported coordination types (ANY, HW,
> NONE), this change only makes a difference for the ANY type, when
> policy->cpu is hotplugged out. In that case the new policy->cpu will
> be different from ((struct cppc_cpudata *)policy->driver_data)->cpu.
>
> While in this case the controls of *ANY* CPU could be used to drive
> frequency changes, it's more consistent to use policy->cpu as the
> leading CPU, as used in all other cppc_cpufreq functions. Additionally,
> the debug prints in cppc_set_perf() would no longer create confusion
> when referring to a CPU that is hotplugged out.
>
> Signed-off-by: Ionela Voinescu <ionela.voinescu@arm.com>
> Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
> Cc: Viresh Kumar <viresh.kumar@linaro.org>
> ---
> drivers/cpufreq/cppc_cpufreq.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/cpufreq/cppc_cpufreq.c b/drivers/cpufreq/cppc_cpufreq.c
> index ac95b4424a2e..fd2daeb59b49 100644
> --- a/drivers/cpufreq/cppc_cpufreq.c
> +++ b/drivers/cpufreq/cppc_cpufreq.c
> @@ -150,6 +150,7 @@ static int cppc_cpufreq_set_target(struct cpufreq_policy *policy,
>
> {
> struct cppc_cpudata *cpu_data = policy->driver_data;
> + unsigned int cpu = policy->cpu;
> struct cpufreq_freqs freqs;
> u32 desired_perf;
> int ret = 0;
> @@ -164,12 +165,12 @@ static int cppc_cpufreq_set_target(struct cpufreq_policy *policy,
> freqs.new = target_freq;
>
> cpufreq_freq_transition_begin(policy, &freqs);
> - ret = cppc_set_perf(cpu_data->cpu, &cpu_data->perf_ctrls);
> + ret = cppc_set_perf(cpu, &cpu_data->perf_ctrls);
> cpufreq_freq_transition_end(policy, &freqs, ret != 0);
>
> if (ret)
> pr_debug("Failed to set target on CPU:%d. ret:%d\n",
> - cpu_data->cpu, ret);
> + cpu, ret);
>
> return ret;
> }
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
--
viresh
next prev parent reply other threads:[~2020-11-09 7:05 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-05 12:55 [PATCH 0/8] cppc_cpufreq: fix, clarify and improve support Ionela Voinescu
2020-11-05 12:55 ` [PATCH 1/8] cppc_cpufreq: fix misspelling, code style and readability issues Ionela Voinescu
2020-11-09 6:58 ` Viresh Kumar
2020-11-05 12:55 ` [PATCH 2/8] cppc_cpufreq: clean up cpu, cpu_num and cpunum variable use Ionela Voinescu
2020-11-09 6:59 ` Viresh Kumar
2020-11-05 12:55 ` [PATCH 3/8] cppc_cpufreq: simplify use of performance capabilities Ionela Voinescu
2020-11-09 7:01 ` Viresh Kumar
2020-11-05 12:55 ` [PATCH 4/8] cppc_cpufreq: replace per-cpu structures with lists Ionela Voinescu
2020-11-05 15:50 ` Jeremy Linton
2020-11-05 17:00 ` Ionela Voinescu
2020-11-05 12:55 ` [PATCH 5/8] cppc_cpufreq: use policy->cpu as driver of frequency setting Ionela Voinescu
2020-11-09 7:05 ` Viresh Kumar [this message]
2020-11-05 12:55 ` [PATCH 6/8] cppc_cpufreq: clarify support for coordination types Ionela Voinescu
2020-11-09 7:07 ` Viresh Kumar
2020-11-05 12:55 ` [PATCH 7/8] cppc_cpufreq: expose information on frequency domains Ionela Voinescu
2020-11-09 7:09 ` Viresh Kumar
2020-11-05 12:55 ` [PATCH 8/8] acpi: fix NONE coordination for domain mapping failure Ionela Voinescu
2020-11-05 13:05 ` Rafael J. Wysocki
2020-11-05 14:02 ` Ionela Voinescu
2020-11-05 14:47 ` Rafael J. Wysocki
2020-11-09 7:10 ` Viresh Kumar
2020-11-17 14:59 ` [PATCH 0/8] cppc_cpufreq: fix, clarify and improve support Rafael J. Wysocki
2020-11-17 15:32 ` Ionela Voinescu
2020-11-17 16:30 ` Rafael J. Wysocki
2020-11-17 19:04 ` Ionela Voinescu
2020-11-17 18:49 ` [PATCH] cppc_cpufreq: optimise memory allocation for HW and NONE coordination Ionela Voinescu
2020-11-23 17:32 ` Rafael J. Wysocki
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