From: Jan Kiszka <jan.kiszka@domain.hid>
To: Philippe Gerum <rpm@xenomai.org>
Cc: Xenomai-core@domain.hid
Subject: Re: [Xenomai-core] [PATCH] fix hw-timer setup/cleanup for i386
Date: Fri, 12 Oct 2007 11:00:56 +0200 [thread overview]
Message-ID: <470F37C8.4090301@domain.hid> (raw)
In-Reply-To: <470E8BFE.4070804@domain.hid>
Philippe,
Jan Kiszka wrote:
> This patch for SVN trunk fixes most of the current bugs around hardware
> timer takeover and release from/to Linux. Tested and found working here
> (including SMP):
> - 2.6.22, APIC, highres=off, nohz=off
> - 2.6.22, APIC, highres=on, nohz=on
> - 2.6.20, APIC
>
> Tests to be done:
> - 2.6.22, PIT (currently building...)
> - 2.6.20, PIT
To close this topic: Also the tests with APIC switched off were
successfully completed yesterday. So the logic should be fine now, ...
>
> Things became quite complex in i386/hal.c now. Some of this complexity
> might be avoidable if RTHAL_APIC_TIMER_VECTOR equalled
> LOCAL_TIMER_VECTOR. What's the reason for this? Is it something related
> to pre-highres times of Linux (ie. 2.6.20 and earlier)? Can we overcome
> it, at least for recent kernels?
>
> So, while this patch may work correctly, my feeling is it needs yet
> another round of polishing, also looking for now possibly outdated comments.
>
...just this aspect needs to be addressed.
Jan
--
Siemens AG, Corporate Technology, CT SE 2
Corporate Competence Center Embedded Linux
next prev parent reply other threads:[~2007-10-12 9:00 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-11 20:47 [Xenomai-core] [PATCH] fix hw-timer setup/cleanup for i386 Jan Kiszka
2007-10-12 8:58 ` Stelian Pop
2007-10-12 9:14 ` Jan Kiszka
2007-10-12 11:00 ` Stelian Pop
2007-10-12 11:15 ` Jan Kiszka
2007-10-12 13:19 ` Stelian Pop
2007-10-12 13:39 ` Jan Kiszka
2007-10-12 13:41 ` Philippe Gerum
2007-10-12 14:26 ` Stelian Pop
2007-10-12 19:53 ` Jan Kiszka
2007-10-12 20:22 ` Stelian Pop
2007-10-12 21:51 ` Stelian Pop
2007-10-12 21:58 ` Philippe Gerum
2007-10-13 14:28 ` Stelian Pop
2007-10-13 14:42 ` Jan Kiszka
2007-10-13 16:12 ` Stelian Pop
2007-10-13 16:35 ` Philippe Gerum
2007-10-13 16:38 ` Jan Kiszka
2007-10-13 20:55 ` Stelian Pop
2007-10-13 14:32 ` Stelian Pop
2007-10-12 9:00 ` Jan Kiszka [this message]
2007-10-12 9:16 ` Philippe Gerum
2007-10-12 9:47 ` Jan Kiszka
2007-10-12 12:48 ` Philippe Gerum
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