Re: [ckrm-tech] CKRM CPU E15

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The previous scheduler patch wasn't fully tested on SMP machines. I am 
now working on the issue you reported. I will send out another patch 
once I get it solved.

Guillaume Thouvenin wrote:

> Selon Haoqiang Zheng <hz...@cs...>:
>
> > >-----Original Message-----
> > >This is the patch for CKRM CPU  scheduler based on core e15.  It's
> > >stable (I think) for uniprocessor systems. It hasn't been tested on a
> > >SMP system so I can't say anything about that.
>
>   I tested your patch on SMP system as I am very interested by 
> statistics that can be gathered for a class about CPU usage. 
> Compilation was fine except that CKRM CPU Scheduler and CKRM CPU 
> Monitor must be selected in the config as reported in previous mail 
> (it doesn't work as a module). A problem occured when booting the 
> system. It blocked after ACPI started. I copy boot message at the end 
> of this email. The kernel works fine if the patch is not applied (just 
> with e15).
>
>   If it can help I can perform some other tests on the SMP system.
>
> Best,
> Guillaume
>
>
> ---------------[ CUT HERE ]-------------------------------------------
>  Filesystem type is ext2fs, partition type 0x83
> kernel /vmlinuz-2.6.7-e15+cpu root=/dev/sdb3 console=ttyS0
>    [Linux-bzImage, setup=0x1400, size=0x1ac1b6]
>
> Linux version 2.6.7e15+cpu (guill@account) (gcc version 3.2.2 20030222 
> (Red Hat Linux 3.2
> 2-5)) #6 SMP Mon Jul 19 13:38:46 CEST 2004
> BIOS-provided physical RAM map:
>  BIOS-e820: 0000000000000000 - 000000000009f400 (usable)
>  BIOS-e820: 000000000009f400 - 00000000000a0000 (reserved)
>  BIOS-e820: 00000000000e8000 - 0000000000100000 (reserved)
>  BIOS-e820: 0000000000100000 - 000000007fff0000 (usable)
>  BIOS-e820: 000000007fff0000 - 000000007ffff000 (ACPI data)
>  BIOS-e820: 000000007ffff000 - 0000000080000000 (ACPI NVS)
>  BIOS-e820: 00000000fec00000 - 00000000fed00000 (reserved)
>  BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
>  BIOS-e820: 00000000fff00000 - 0000000100000000 (reserved)
> 1151MB HIGHMEM available.
> 896MB LOWMEM available.
> found SMP MP-table at 000ff780
> On node 0 totalpages: 524272
>   DMA zone: 4096 pages, LIFO batch:1
>   Normal zone: 225280 pages, LIFO batch:16
>   HighMem zone: 294896 pages, LIFO batch:16
> DMI 2.3 present.
> ACPI: RSDP (v000 NEC                                       ) @ 0x000ff9b0
> ACPI: RSDT (v001 NEC    EXP5800  0x00000001 MSFT 0x01000000) @ 0x7fff0000
> ACPI: FADT (v001 NEC    EXP5800  0x00000001 MSFT 0x01000000) @ 0x7fff0030
> ACPI: MADT (v001 NEC    EXP5800  0x00000001 MSFT 0x01000000) @ 0x7fff00b0
> ACPI: OEMR (v001 NEC    EXP5800  0x00000001 MSFT 0x01000000) @ 0x7fff0140
> ACPI: DSDT (v001    NEC  EXP5800 0x00000100 INTL 0x20020918) @ 0x00000000
> ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
> Processor #0 15:2 APIC version 20
> ACPI: LAPIC (acpi_id[0x01] lapic_id[0x06] enabled)
> Processor #6 15:2 APIC version 20
> ACPI: LAPIC (acpi_id[0x02] lapic_id[0x00] disabled)
> ACPI: LAPIC (acpi_id[0x03] lapic_id[0x00] disabled)
> ACPI: LAPIC_NMI (acpi_id[0x00] high level lint[0x1])
> ACPI: LAPIC_NMI (acpi_id[0x01] high level lint[0x1])
> ACPI: IOAPIC (id[0x08] address[0xfec00000] global_irq_base[0x0])
> IOAPIC[0]: Assigned apic_id 8
> IOAPIC[0]: apic_id 8, version 32, address 0xfec00000, GSI 0-23
> ACPI: IOAPIC (id[0x09] address[0xfec81000] global_irq_base[0x18])
> IOAPIC[1]: Assigned apic_id 9
> IOAPIC[1]: apic_id 9, version 32, address 0xfec81000, GSI 24-47
> ACPI: IOAPIC (id[0x0a] address[0xfec81400] global_irq_base[0x30])
> IOAPIC[2]: Assigned apic_id 10
> IOAPIC[2]: apic_id 10, version 32, address 0xfec81400, GSI 48-71
> ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
> ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
> Enabling APIC mode:  Flat.  Using 3 I/O APICs
> Using ACPI (MADT) for SMP configuration information
> Built 1 zonelists
> Kernel command line: root=/dev/sdb3 console=ttyS0
> Initializing CPU#0
> PID hash table entries: 4096 (order 12: 32768 bytes)
> CKRM Initialization
> ...... Initializing ClassType<taskclass> ........
> ...... Initializing ClassType<socket_class> ........
> CKRM Initialization done
> Detected 2791.374 MHz processor.
> Using tsc for high-res timesource
> Console: colour VGA+ 80x25
> Memory: 2074312k/2097088k available (2475k kernel code, 21644k 
> reserved, 1003k data, 276k
> init, 1179584k highmem)
> Checking if this processor honours the WP bit even in supervisor 
> mode... Ok.
> Calibrating delay loop... 5505.02 BogoMIPS
> Dentry cache hash table entries: 262144 (order: 8, 1048576 bytes)
> Inode-cache hash table entries: 131072 (order: 7, 524288 bytes)
> Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
> CPU: Trace cache: 12K uops, L1 D cache: 8K
> CPU: L2 cache: 512K
> CPU: Physical Processor ID: 0
> Intel machine check architecture supported.
> Intel machine check reporting enabled on CPU#0.
> CPU0: Intel P4/Xeon Extended MCE MSRs (12) available
> Enabling fast FPU save and restore... done.
> Enabling unmasked SIMD FPU exception support... done.
> Checking 'hlt' instruction... OK.
> CPU0: Intel(R) Xeon(TM) CPU 2.80GHz stepping 09
> per-CPU timeslice cutoff: 1462.54 usecs.
> task migration cache decay timeout: 2 msecs.
> enabled ExtINT on CPU#0
> ESR value before enabling vector: 00000000
> ESR value after enabling vector: 00000000
> Booting processor 1/6 eip 3000
> Initializing CPU#1
> masked ExtINT on CPU#1
> ESR value before enabling vector: 00000000
> ESR value after enabling vector: 00000000
> Calibrating delay loop... 5570.56 BogoMIPS
> CPU: Trace cache: 12K uops, L1 D cache: 8K
> CPU: L2 cache: 512K
> CPU: Physical Processor ID: 3
> Intel machine check architecture supported.
> Intel machine check reporting enabled on CPU#1.
> CPU1: Intel P4/Xeon Extended MCE MSRs (12) available
> CPU1: Intel(R) Xeon(TM) CPU 2.80GHz stepping 09
> Total of 2 processors activated (11075.58 BogoMIPS).
> WARNING: 1 siblings found for CPU0, should be 2
> WARNING: 1 siblings found for CPU1, should be 2
> ENABLING IO-APIC IRQs
> ..TIMER: vector=0x31 pin1=2 pin2=-1
> Using local APIC timer interrupts.
> calibrating APIC timer ...
> ..... CPU clock speed is 2790.0601 MHz.
> ..... host bus clock speed is 132.0885 MHz.
> checking TSC synchronization across 2 CPUs: passed.
> Brought up 2 CPUs
> NET: Registered protocol family 16
> EISA bus registered
> PCI: PCI BIOS revision 2.10 entry at 0xfdb55, last bus=4
> PCI: Using configuration type 1
> mtrr: v2.0 (20020519)
> ACPI: Subsystem revision 20040326
> Unable to handle kernel NULL pointer dereference
>
>
>
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