Subject: cpufreq: powenow-k7 up-machine with smp-kernel
From: Thomas Meyer <thomas.mey@web.de>
To: linux-kernel@vger.kernel.org
Cc: bcollins@ubuntu.com
Content-Type: text/plain
Date: Mon, 30 Jan 2006 22:36:05 +0100
Message-Id: <1138656965.14867.8.camel@hotzenplotz.treehouse>
Mime-Version: 1.0
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 916
Lines: 26

Hi.

The patch in mm-tree
"powernow-k7-work-when-kernel-is-compiled-for-smp.patch" doesn't work
with current linus git-tree. The real problem is the function
"recalibrate_cpu_khz" which is parted of timers/timer_tsc.c (an
impilicit dependency! is this timer always available?).
for an smp kernel this function always returns -ENODEV.
The other changes in the patch are not needed, as fas as i understand.

Without the recalibrate_cpu_khz call the driver works on an up-machine
with an smp-kernel.

Why is the powernow-k7 driver the only driver which does this call to
recalibrate_cpu_khz, which corrects the jiffies for the new cpu
frequency)?


with kind regards
Thomas

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/