Re: [PATCH] acpi: add support for extended IRQ to PCI link

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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.

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

--
Sinan Kaya
Qualcomm Technologies, Inc. on behalf of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project
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