Date: Mon, 23 Apr 2001 09:33:43 -0700 From: Peter Wemm <peter@wemm.org> To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: John Baldwin <jhb@FreeBSD.ORG>, alpha@FreeBSD.ORG Subject: Re: SMP is stable now. Whee! :) Message-ID: <20010423163343.8E38638FC@overcee.netplex.com.au> In-Reply-To: <15076.11793.428586.604450@grasshopper.cs.duke.edu>
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Andrew Gallatin wrote: > > Peter Wemm writes: > > I just fired it up on a UP2000+ w/ dual 833MHz cpus (4MB DDR L2 cache each ) > > and it was rather uneventful. > > > > That is.. it was until I typed 'make -j4 world': > > lock order reversal > > 1st clk last acquired @ ../../alpha/alpha/clock.c:569 > > 2nd 0xfffffc00006ce728 smp rendezvous @ ../../alpha/alpha/mp_machdep.c:60 5 > > 3rd 0xfffffc00006d9870 clk @ ../../alpha/alpha/clock.c:390 > > [hang] > > > > This is with alpha.smp.patch, plus the stuff recent commits. I had to cha nge > > some #idef's into #ifdefs in alpha/trap.c though. > > Huh? idef? Where? > > Can you build with WITNESS_DDB and KTR, with the KTR_MASK set to > something like -1 and dump the ktr buffer when this happens? > > Drew In John's alpha.smp.patch: @@ -704,11 +714,22 @@ u_quad_t sticks; u_int64_t args[10]; /* XXX */ u_int hidden = 0, nargs; +#idef SMP + critical_t s; +#endif /* * Find our per-cpu globals. */ +#idef SMP + s = critical_enter(); +#endif globalp = (struct globaldata *) alpha_pal_rdval(); + p = curproc; +#idef SMP + p->p_md.md_kernnest++; + critical_exit(s); +#endif mtx_lock(&Giant); framep->tf_regs[FRAME_TRAPARG_A0] = 0; I'm not sure how John compiled that... Cheers, -Peter -- Peter Wemm - peter@FreeBSD.org; peter@yahoo-inc.com; peter@netplex.com.au "All of this is for nothing if we don't go to the stars" - JMS/B5 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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