lkml.org 
[lkml]   [2015]   [Nov]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH] acpi: add support for extended IRQ to PCI link
From
Date
On 2015/11/9 13:45, Sinan Kaya wrote:
>
>
> On 11/9/2015 12:24 AM, Jiang Liu wrote:
>>> + u32 possible[ACPI_PCI_LINK_MAX_POSSIBLE];
>>> > u8 initialized:1;
>>> > u8 reserved:7;
>>> > };
>> Hi Sinan,
>> This data structure become some sort of big, any idea to reduce
>> memory consumption?
>> Thanks,
>> Gerry
>>
> Hi Gerry,
>
> There are two constants in the code.
>
> #define ACPI_PCI_LINK_MAX_POSSIBLE 16
>
> I changed the data type above. Previously it was consuming 16 bytes now
> 64 bytes.
Aha, I made a mistake. ACPI_PCI_LINK_MAX_POSSIBLE hasn't been changed,
so the space increasing is not so big:)

>
> The second one is this.
>
> #define ACPI_MAX_IRQS 256
>
> I changed ACPI_MAX_IRQS to 1020 from 256. Let's assume 1024.
>
> I'm concerned about this though since you warned. This used to consume
> 1024 bytes now 4096 bytes.
>
> static int acpi_irq_penalty[ACPI_MAX_IRQS] = {
> PIRQ_PENALTY_ISA_ALWAYS, /* IRQ0 timer */
> ...
> }
>
> Sinan
>


\
 
 \ /
  Last update: 2015-11-09 10:01    [W:1.540 / U:0.112 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site