linux-kernel - Re: [PATCH v2 7/7] ACPI / processor: Introduce invalid_phys

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Date:	Tue, 05 May 2015 12:25:57 +0100
From:	Sudeep Holla <sudeep.holla@....com>
To:	Hanjun Guo <hanjun.guo@...aro.org>
CC:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Sudeep Holla <sudeep.holla@....com>,
	Will Deacon <Will.Deacon@....com>,
	Catalin Marinas <Catalin.Marinas@....com>,
	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	Stefano Stabellini <stefano.stabellini@...citrix.com>,
	Lorenzo Pieralisi <Lorenzo.Pieralisi@....com>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linaro-acpi@...ts.linaro.org" <linaro-acpi@...ts.linaro.org>
Subject: Re: [PATCH v2 7/7] ACPI / processor: Introduce invalid_phys_cpuid()



On 05/05/15 03:46, Hanjun Guo wrote:
> Introduce invalid_phys_cpuid() to identify cpu with invalid
> physical ID, then used it as replacement of the direct comparisons
> with PHYS_CPUID_INVALID.
>
> Signed-off-by: Hanjun Guo <hanjun.guo@...aro.org>
> ---
>   drivers/acpi/acpi_processor.c | 4 ++--
>   drivers/acpi/processor_core.c | 4 ++--
>   include/linux/acpi.h          | 5 +++++
>   3 files changed, 9 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c
> index 62c846b..92a5f73 100644
> --- a/drivers/acpi/acpi_processor.c

[...]

> diff --git a/include/linux/acpi.h b/include/linux/acpi.h
> index 913b49f..cc82ff3 100644
> --- a/include/linux/acpi.h
> +++ b/include/linux/acpi.h
> @@ -163,6 +163,11 @@ static inline bool invalid_logical_cpuid(u32 cpuid)
>   	return (int)cpuid < 0;
>   }
>
> +static inline bool invalid_phys_cpuid(phys_cpuid_t phys_id)
> +{
> +	return (int)phys_id < 0;

Should this be phys_id == PHYS_CPUID_INVALID ? else I don't see why we
need to even define PHYS_CPUID_INVALID

Regards,
Sudeep
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