linux-kernel - Re: Regression: 20 ACPI interrupts per second on EEEPC 4G

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Message-ID: <49DFE345.3010109@gmail.com>
Date:	Sat, 11 Apr 2009 04:24:37 +0400
From:	Alexey Starikovskiy <aystarik@...il.com>
To:	Alan Jenkins <alan-jenkins@...fmail.co.uk>
CC:	linux-acpi@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>
Subject: Re: Regression: 20 ACPI interrupts per second on EEEPC 4G

Hi Alan,

This patch looks to be a suspect: 34ff4dbccccce54c83b1234d39b7ad9e548a75dd,
Please check if reversing it helps

Regards,
Alex.

Alan Jenkins wrote:
> On latest git, powertop shows 20 ACPI interrupts per second.  
> Previously, this was closer to 1 per second.  See attached output (a 
> vs b, "a" is from 2.6.29-rc8).
>
> This is from a pretty sparse KDE desktop.  Normally I run 
> gnome-power-manager, but I killed it to make sure that wasn't causing 
> any problems.
>
> alan@...n-eeepc:/sys/firmware/acpi/interrupts$ grep -v "invalid" *
> error:       0
> ff_gbl_lock:       0    enabled
> ff_pwr_btn:       0     enabled
> ff_rt_clk:       0      disabled
> gpe03:       0  disabled
> gpe04:       0  disabled
> gpe05:       0  disabled
> gpe09:       0  disabled
> gpe0B:       0  disabled
> gpe0C:       0  disabled
> gpe0D:       0  disabled
> gpe0E:       0  disabled
> gpe18:   60975  enabled
> gpe_all:   60975
> sci:   60975
>
> which I presume means lots of EC interrupts.
>
> [    0.134068] ACPI: EC: GPE = 0x18, I/O: command/status = 0x66, data 
> = 0x62
>
> Any ideas?
>
> Thanks
> Alan

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