16 Jul
2008
16 Jul
'08
5:15 a.m.
On Tue, July 15, 2008 20:02, Ken Restivo wrote:
On Mon, Jul 14, 2008 at 11:48:18PM +0100, Rui Nuno
Capela wrote:
strange.
Florian Schmidt wrote:
On my laptop, CONFIG_PREEMPT_RT is set, but no "RT" appears in the uname
-a line.
Hi Ken,
On Monday 14 July 2008, Ken Restivo wrote:
i'm afraid you're betting on the wrong horse :)
you could have patched it alright (no doubt about that) and also set
EXTRAVERSION with the "-rt1-1" suffix, but, unless you've set
CONFIG_PREEMPT_RT=y you're not running a full-preeept RT kernel, that's
for sure.
afaict, when one talks about a RT linux kernel, he/she's meaning that
CONFIG_PREEMPT_RT=y and then, trust me, the "RT" will appear in the
`uname -a` line output.
Linux version 2.6.21-rt1-1 (root@asus) (gcc
version 4.1.2 20061115
^^^^^The version string shows it though :)
(prerelease) (Debian 4.1.1-21)) #1 SMP PREEMPT
Thu May 3 00:41:41
PDT 2007
No "RT" there, but I definitely know it is an RT kernel, because I
patched it myself.
It's definitely a RT kernel. I've been running
it for a year now.
dunno when that "RT" got in the uname -a line, but one other way for you
to check that your kernel is _actually_ a full real-time preempt kernel is
for seeing the existence of the irq service handler threads like this (as
root)
ps -ef | grep -i IRQ
check that out, not that it makes a difference other than a point
--
rncbc aka Rui Nuno Capela
rncbc(a)rncbc.org