Date: Thu, 2 Dec 2004 15:33:44 -0500 From: John Baldwin <jhb@FreeBSD.org> To: Pawel Jakub Dawidek <pjd@FreeBSD.org> Cc: cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/dev/acpica acpi_pci_link.c Message-ID: <200412021533.44254.jhb@FreeBSD.org> In-Reply-To: <20041201231730.GB813@darkness.comp.waw.pl> References: <200412012105.iB1L52xX017823@repoman.freebsd.org> <20041201231730.GB813@darkness.comp.waw.pl>
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On Wednesday 01 December 2004 06:17 pm, Pawel Jakub Dawidek wrote: > On Wed, Dec 01, 2004 at 09:05:02PM +0000, John Baldwin wrote: > +> jhb 2004-12-01 21:05:02 UTC > +> > +> FreeBSD src repository > +> > +> Modified files: > +> sys/dev/acpica acpi_pci_link.c > +> Log: > +> - Do a better job of handling any Dependent Functions (aka DPFs) that > appear +> in the _PRS or _CRS of link devices. If faced with multiple > DPFs in a +> _PRS, we just use the first one. We assume that if _CRS > has DPF tags they +> only contain a single set since multiple DPFs > wouldn't make any sense. In +> practice, the only DPFs I've seen so > far for link devices are that the one +> IRQ resource is surrounded by > a DPF tag pair for no apparent reason, and +> this should handle that > case fine now. > +> - Only allocate link structures for IRQ resources for link devices > rather +> than allocating a link structure for every resource. > > On my box things looks much worse (not sure if this is related): > > Timecounter "i8254" frequency 1193182 Hz quality 0 > CPU: Intel(R) XEON(TM) CPU 1.80GHz (1799.75-MHz 686-class CPU) > Origin = "GenuineIntel" Id = 0xf24 Stepping = 4 > > Features=0x3febfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MC >A,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM> > Hyperthreading: 2 logical CPUs > real memory = 1073741824 (1024 MB) > avail memory = 1046126592 (997 MB) > ACPI APIC Table: <INTEL APIC > > FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs > cpu0 (BSP): APIC ID: 0 > cpu1 (AP): APIC ID: 1 > cpu2 (AP): APIC ID: 6 > cpu3 (AP): APIC ID: 7 > kernel trap 12 with interrupts disabled > > > Fatal trap 12: page fault while in kernel mode > cpuid = 0; apic id = 00 > fault virtual address = 0x9 > fault code = supervisor write, page not present > instruction pointer = 0x8:0xc05ac7c9 > stack pointer = 0x10:0xc0820cb4 > frame pointer = 0x10:0xc0820cd0 > code segment = base 0x0, limit 0xfffff, type 0x1b > = DPL 0, pres 1, def32 1, gran 1 > processor eflags = resume, IOPL = 0 > current process = 0 (swapper) > [thread pid 0 tid 0 ] > Stopped at cpu_fork+0x1a1: incl 0x8(%eax) > db> tr > Tracing pid 0 tid 0 td 0xc0617e20 > cpu_fork(c0617e20,c1e8b000,c1e83300,60034,c1e8b068,0,c05cd0e1,287,c0619fe0, >c05cd0e1,283) at cpu_fork+0x1a1 > fork1(c0617e20,60034,0,c0820d4c) at fork1+0xbe5 > kthread_create(c0488eac,0,0,40000,0) at kthread_create+0x33 > ktrace_init(0,c1e70f70,81ec00,81e000,828000) at ktrace_init+0xac > mi_startup() at mi_startup+0xb3 > begin() at begin+0x2c > db> This is well before the link code. Can you use gdb to find the file/line for cpu_fork+0x1a1? -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org
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