From: Jan Kiszka <kiszka@domain.hid>
To: xenomai-core <xenomai@xenomai.org>
Subject: [Xenomai-core] [RFC] latency tracing
Date: Mon, 28 Nov 2005 21:57:39 +0100 [thread overview]
Message-ID: <438B6F43.4060104@domain.hid> (raw)
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Hi,
as I'm lazy, er busy, I'm pushing this idea into public instead of
hacking a patch on my own: wouldn't it be nice to have something like
the latency backtrace of PREEMPT_RT also in Xenomai? Even when the core
is once optimised ;), there can still be drivers with long IRQ locks
nuking the WCET.
I saw that there is already something for SMP spinlock debugging. Is it
a lot of work to extend this to UP and maybe even all IRQ-off locks? Did
someone already look at the backtrace implementation of PREEMPT_RT in
details? Is is complicated to port? Does it require some changes at
ADEOS level?
Jan
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next reply other threads:[~2005-11-28 20:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-28 20:57 Jan Kiszka [this message]
2005-11-28 22:28 ` [Xenomai-core] [RFC] latency tracing Philippe Gerum
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