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

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Message-ID: <49DF6835.9040501@tuffmail.co.uk>
Date:	Fri, 10 Apr 2009 16:39:33 +0100
From:	Alan Jenkins <alan-jenkins@...fmail.co.uk>
To:	linux-acpi@...r.kernel.org
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>
Subject: Regression: 20 ACPI interrupts per second on EEEPC 4G

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

View attachment "a" of type "text/plain" (3622 bytes)

View attachment "b" of type "text/plain" (3612 bytes)