From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Wed, 18 Oct 2006 23:48:52 +0200
From: Jan Kiszka <jan.kiszka@domain.hid>
MIME-Version: 1.0
Subject: Re: [Xenomai-core] [PATCH 2/3] Migrate and enhance IRQ statistics
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To: Dmitry Adamushko <dmitry.adamushko@domain.hid>, xenomai-core <xenomai@xenomai.org>

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Jan Kiszka wrote:
> This patch migrates the xnintr hits statistics to the new xnstat
> subsystem and introduces per-CPU runtime statistics to xnintr entities.=

> The latter allows to differentiate between ISR and thread activity unde=
r
> /proc/xenomai/stat.
>=20
> For querying the xnintr statistics, a scalable service based on IRQ lis=
t
> revisions is introduced (xnintr_query), just like it already exists for=

> threads.
>=20
> Accounting model:
>  - hits are only counted if the ISR returns XN_ISR_HANDLED
>  - runtime is accounted over each ISR invocation, independent of its
>    return value
>=20
> As a hopefully not critical side effect, the native intr services now
> only reports non-zero hit counters if XENO_OPT_STATS in enabled. This
> fact is documented in the rt_intr_info structure.
>=20

This patch causes an oops on process cleanup here - I'm still
investigating (likely an outdated xnstat_runtime reference)...

Jan



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