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Message-ID: <20070730025412.GA22888@dth.net>
Date: Mon, 30 Jul 2007 04:54:12 +0200
From: Danny ter Haar <dth@....net>
To: Gabriel C <nix.or.die@...glemail.com>
Cc: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
linux-kernel@...r.kernel.org, len.brown@...el.com,
linux-acpi@...r.kernel.org
Subject: Re: Update: ide problems: 2.6.22-git17 working, 2.6.23-rc1* is not:
Quoting Gabriel C (nix.or.die@...glemail.com):
> Now while we think is ACPI this should be easy for you to bisect.
> This commit http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=39804b20f62532fa05c2a8c3e2d1ae551fd0327b
> merged ACPI so this one should be your first bad one.
> Maybe Len has some idea and you don't need to bisect :)
Thanks to personal coaching of Gabriel i bisected the last few days.
It looked like this was the cullprit:
22aadf8a07067644e101267ed5003043f2ad05bf is first bad commit
2.6.23-rc1-git[1-6] all lockup solid after either direct or
within a couple of minutes (less than 2) after reboot.
They all run fine with "acpi=off" as boot argument.
However, i'm currently running 2.6.23-rc1-git6 with this reverted:
diff --git a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
index 18c8b67..6f846be 100644 (file)
--- a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ b/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -665,8 +665,8 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
data->max_freq = perf->states[0].core_frequency * 1000;
/* table init */
for (i=0; i<perf->state_count; i++) {
- if (i>0 && perf->states[i].core_frequency ==
- perf->states[i-1].core_frequency)
+ if (i>0 && perf->states[i].core_frequency >=
+ data->freq_table[valid_states-1].frequency / 1000)
continue;
-----------
I could hardly believe this could be the cause.
And indeed after about 16 minutes the kernel froze again, though longer
uptime than other kernels :-(
This hardware is a via epia 5000 with latest bios available (2.07)
It's remarkable that with acpi=off the machine is rocksolid.
As is with 2.6.22* kernels _with_ acpi enabled!
weeks of uptime before i wanted to upgrade to a new kernel ;-)
I'm thinking of redoing the git disect but this time really powercycle
the unit between kernels since it "seems/feels" like a timer which
really counts to 0 and then locks the machine.
After a lockup/freeze i cant boot the kernel another time with acpi
enabled: it will simply hang after booting init.
And again nobody home: no keyboard activity whatsoever.
I've put the dmesg of 2.6.23-rc1-git6 with and without acpi=off online:
http://www.dth.net/kernel/via_output_2.6.23-rc1-git6-acpi_off
http://www.dth.net/kernel/via_output_2.6.23-rc1-git6-acpi_on
I would like to hear if someone has an idea how to tackle this problem.
Danny
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