Date: Mon, 23 Aug 2004 22:43:53 +0200 From: Willem Jan Withagen <wjw@withagen.nl> To: Julian Elischer <julian@elischer.org> Cc: "Simon L. Nielsen" <simon@freebsd.org> Subject: Re: PLEASE TEST: IPI deadlock avoidance patch Message-ID: <412A5709.2070704@withagen.nl> In-Reply-To: <412A2CCF.4050809@elischer.org> References: <20040822115345.Y94593@carver.gumbysoft.com> <20040823111304.GA767@zaphod.nitro.dk> <412A2CCF.4050809@elischer.org>
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Julian Elischer wrote:
> Now to start work on the preemption hangs..
>
Well my dual AMD64 system seemed to be rather stable since I went with a
Tyan board.
So I though lets be brave, and see how far we get with PREEMPTION....
I did not get anywhere.....
Right at boot time:
start_init: trying /sbin/init
panic: runq_choose: no proc on busy queue
cpuid = 0;
KDB: stack backtrace:
kdb_backtrace() at kdb_backtrace+0x37
panic() at panic+0x1e2
runq_choose() at runq_choose+0x6f
kseq_choose() at kseq_choose+0xc8
sched_choose() at sched_choose+0x5b
choosethread() at choosethread+0x47
sched_switch() at sched_switch+0x185
mi_switch() at mi_switch+0x28d
sleepq_switch() at sleepq_switch+0x123
sleepq_timedwait() at sleepq_timedwait+0xe
msleep() at msleep+0x425
g_io_schedule_down() at g_io_schedule_down+0x95
g_down_procbody() at g_down_procbody+0x40
fork_exit() at fork_exit+0xe9
fork_trampoline() at fork_trampoline+0xe
Dumping not possible since the system did not grow any kbd input.
Probably way to early to try this, but I was just curious.
Question:
Is this patch going into 6.0-CURRENT or in 5.3????
--WjW
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