Did you add a printk to your schedule() function to see if it's getting called?
schedule() is called from within the SCHEDULE_SOFTIRQ. Look at
xen/common/sched_credit.c. When is SCHEDULE_SOFTIRQ getting raised?
Are you doing that in your scheduler?
-George
On Tue, Feb 16, 2010 at 6:29 PM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
> On Tue, Feb 16, 2010 at 07:18:00PM +0100, michele.paolino wrote:
>> Thanks for the istructions,
>> I have read that thread but is not useful for me. I have compiled and
>> installed the round robin scheduler of that thread. Both schedulers have
>> the same behavior. Following your advice I have set up a serial console. I
>> have attached serial console's log along with this mail. As I supposed,
>> dom0 doesn't start.
>>
>
> Please paste your grub.conf.
>
> It could be that your dom0 kernel is not configured to use the serial console.
>
> -- Pasi
>
>> Michele
>>
>> On Mon, Feb 15, 2010 at 7:54 PM, Pasi Kärkkäinen <[1]pasik@xxxxxx> wrote:
>>
>> On Mon, Feb 15, 2010 at 01:59:06PM +0000, George Dunlap wrote:
>> > Do you have a serial console set up?
>> >
>>
>> If not, instructions here:
>> [2]http://wiki.xensource.com/xenwiki/XenSerialConsole
>> -- Pasi
>> > You may want to skim this thread:
>> >
>>
>> [3]http://lists.xensource.com/archives/html/xen-devel/2009-04/msg01086.html
>> > to see if any of the advice given there is useful.
>> >
>> > -George
>> >
>> > On Mon, Feb 15, 2010 at 1:19 PM, michele.paolino
>> > <[4]michele.paolino@xxxxxxxxxxxxxxx> wrote:
>> > > Hi! I'm writing a simple scheduler to study the xen scheduler
>> interfaces.
>> > > I am able to compile and install it. After reboot when I try to
>> select
>> > > sched=simple, the system gets ready to boot and then everything goes
>> blank.
>> > > I think that dom0 don't start. I can't be able to solve this
>> problem, can
>> > > anybody help me?
>> > > I have attached my simple scheduler code along with this mail.
>> > >
>> > > Thanks,
>> > > Michele
>> > >
>> > > _______________________________________________
>> > > Xen-devel mailing list
>> > > [5]Xen-devel@xxxxxxxxxxxxxxxxxxx
>> > > [6]http://lists.xensource.com/xen-devel
>> > >
>> > >
>> >
>> > _______________________________________________
>> > Xen-devel mailing list
>> > [7]Xen-devel@xxxxxxxxxxxxxxxxxxx
>> > [8]http://lists.xensource.com/xen-devel
>>
>> References
>>
>> Visible links
>> 1. mailto:pasik@xxxxxx
>> 2. http://wiki.xensource.com/xenwiki/XenSerialConsole
>> 3.
>> http://lists.xensource.com/archives/html/xen-devel/2009-04/msg01086.html
>> 4. mailto:michele.paolino@xxxxxxxxxxxxxxx
>> 5. mailto:Xen-devel@xxxxxxxxxxxxxxxxxxx
>> 6. http://lists.xensource.com/xen-devel
>> 7. mailto:Xen-devel@xxxxxxxxxxxxxxxxxxx
>> 8. http://lists.xensource.com/xen-devel
>
>> __ __ _____ _ _ ____
>> \ \/ /___ _ __ |___ /| || | |___ \
>> \ // _ \ '_ \ |_ \| || |_ __) |
>> / \ __/ | | | ___) |__ _| / __/
>> /_/\_\___|_| |_| |____(_) |_|(_)_____|
>>
>> (XEN) Xen version 3.4.2 (root@) (gcc version 4.2.4 (Ubuntu 4.2.4-1ubuntu4))
>> Mon Feb 15 15:12:25 CET 2010
>> (XEN) Latest ChangeSet: unavailable
>> (XEN) Command line: dom0_mem=262144 sched=simple loglvl=all guest_loglvl=all
>> com1=115200,8n1 console=com1
>> (XEN) Video information:
>> (XEN) VGA is text mode 80x25, font 8x16
>> (XEN) Disc information:
>> (XEN) Found 1 MBR signatures
>> (XEN) Found 1 EDD information structures
>> (XEN) Xen-e820 RAM map:
>> (XEN) 0000000000000000 - 000000000009f000 (usable)
>> (XEN) 000000000009f000 - 00000000000a0000 (reserved)
>> (XEN) 00000000000e8000 - 0000000000100000 (reserved)
>> (XEN) 0000000000100000 - 000000003fff0000 (usable)
>> (XEN) 000000003fff0000 - 0000000040000000 (ACPI data)
>> (XEN) 00000000fffbc000 - 0000000100000000 (reserved)
>> (XEN) System RAM: 1023MB (1048124kB)
>> (XEN) ACPI: RSDP 000FBDB0, 0014 (r0 QEMU )
>> (XEN) ACPI: RSDT 3FFF0000, 0034 (r1 QEMU QEMURSDT 1 QEMU 1)
>> (XEN) ACPI: FACP 3FFF01B4, 0074 (r1 QEMU QEMUFACP 1 QEMU 1)
>> (XEN) ACPI: DSDT 3FFF0280, 1DD4 (r1 BXPC BXDSDT 1 INTL 20090521)
>> (XEN) ACPI: FACS 3FFF0240, 0040
>> (XEN) ACPI: SSDT 3FFF2054, 09E3 (r1 BXPC BXSSDT 1 INTL 20090521)
>> (XEN) ACPI: APIC 3FFF2A38, 00EA (r1 QEMU QEMUAPIC 1 QEMU 1)
>> (XEN) ACPI: HPET 3FFF2B90, 0038 (r1 QEMU QEMUHPET 1 QEMU 1)
>> (XEN) NUMA turned off
>> (XEN) Faking a node at 0000000000000000-000000003fff0000
>> (XEN) Xen heap: 9MB (9808kB)
>> (XEN) Domain heap initialised
>> (XEN) found SMP MP-table at 000fbc90
>> (XEN) DMI 2.4 present.
>> (XEN) Using APIC driver default
>> (XEN) ACPI: PM-Timer IO Port: 0xb008
>> (XEN) ACPI: ACPI SLEEP INFO: pm1x_cnt[b004,0], pm1x_evt[b000,0]
>> (XEN) ACPI: wakeup_vec[3fff024c], vec_size[20]
>> (XEN) ACPI: Local APIC address 0xfee00000
>> (XEN) ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
>> (XEN) Processor #0 6:2 APIC version 20
>> (XEN) ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] disabled)
>> (XEN) ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] disabled)
>> (XEN) ACPI: LAPIC (acpi_id[0x03] lapic_id[0x03] disabled)
>> (XEN) ACPI: LAPIC (acpi_id[0x04] lapic_id[0x04] disabled)
>> (XEN) ACPI: LAPIC (acpi_id[0x05] lapic_id[0x05] disabled)
>> (XEN) ACPI: LAPIC (acpi_id[0x06] lapic_id[0x06] disabled)
>> (XEN) ACPI: LAPIC (acpi_id[0x07] lapic_id[0x07] disabled)
>> (XEN) ACPI: LAPIC (acpi_id[0x08] lapic_id[0x08] disabled)
>> (XEN) ACPI: LAPIC (acpi_id[0x09] lapic_id[0x09] disabled)
>> (XEN) ACPI: LAPIC (acpi_id[0x0a] lapic_id[0x0a] disabled)
>> (XEN) ACPI: LAPIC (acpi_id[0x0b] lapic_id[0x0b] disabled)
>> (XEN) ACPI: LAPIC (acpi_id[0x0c] lapic_id[0x0c] disabled)
>> (XEN) ACPI: LAPIC (acpi_id[0x0d] lapic_id[0x0d] disabled)
>> (XEN) ACPI: LAPIC (acpi_id[0x0e] lapic_id[0x0e] disabled)
>> (XEN) ACPI: LAPIC (acpi_id[0x0f] lapic_id[0x0f] disabled)
>> (XEN) ACPI: IOAPIC (id[0x01] address[0xfec00000] gsi_base[0])
>> (XEN) IOAPIC[0]: apic_id 1, version 17, address 0xfec00000, GSI 0-23
>> (XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
>> (XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
>> (XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
>> (XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
>> (XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
>> (XEN) ACPI: IRQ0 used by override.
>> (XEN) ACPI: IRQ2 used by override.
>> (XEN) ACPI: IRQ5 used by override.
>> (XEN) ACPI: IRQ9 used by override.
>> (XEN) ACPI: IRQ10 used by override.
>> (XEN) ACPI: IRQ11 used by override.
>> (XEN) Enabling APIC mode: Flat. Using 1 I/O APICs
>> (XEN) ACPI: HPET id: 0x8086a201 base: 0xfed00000
>> (XEN) Using ACPI (MADT) for SMP configuration information
>> (XEN) Using scheduler: Very simple Scheduler (simple)
>> (XEN)
>> (XEN)
>> (XEN) add VCPU 0
>> (XEN)
>> (XEN) Initializing CPU#0
>> (XEN) Detected 2533.353 MHz processor.
>> (XEN) CPU: L1 I cache: 32K, L1 D cache: 32K
>> (XEN) CPU: L2 cache: 2048K
>> (XEN) Intel machine check reporting enabled on CPU#0.
>> (XEN) CMCI: CPU0 has no CMCI support
>> (XEN) CPU0: Intel QEMU Virtual CPU version 0.11.0 stepping 03
>> (XEN) Total of 1 processors activated.
>> (XEN) ENABLING IO-APIC IRQs
>> (XEN) -> Using new ACK method
>> (XEN) ..TIMER: vector=0xF0 apic1=0 pin1=2 apic2=-1 pin2=-1
>> (XEN) BAD HPET revision id.
>> (XEN) Platform timer is 3.579MHz ACPI PM Timer
>> (XEN) Brought up 1 CPUs
>> (XEN) I/O virtualisation disabled
>> (XEN) CPUIDLE: disabled due to no HPET. Force enable with 'cpuidle'.
>> (XEN) ACPI sleep modes: S3
>> (XEN) mcheck_poll: Machine check polling timer started.
>> (XEN) *** LOADING DOMAIN 0 ***
>> (XEN) Xen kernel: 32-bit, PAE, lsb
>> (XEN) Dom0 kernel: 32-bit, PAE, lsb, paddr 0xc0100000 -> 0xc048d33c
>> (XEN) PHYSICAL MEMORY ARRANGEMENT:
>> (XEN) Dom0 alloc.: 000000003c000000->000000003e000000 (57344 pages to be
>> allocated)
>> (XEN) VIRTUAL MEMORY ARRANGEMENT:
>> (XEN) Loaded kernel: c0100000->c048d33c
>> (XEN) Init. ramdisk: c048e000->c1380c00
>> (XEN) Phys-Mach map: c1381000->c13c1000
>> (XEN) Start info: c13c1000->c13c147c
>> (XEN) Page tables: c13c2000->c13d3000
>> (XEN) Boot stack: c13d3000->c13d4000
>> (XEN) TOTAL: c0000000->c1800000
>> (XEN) ENTRY ADDRESS: c0100000
>> (XEN) Dom0 has maximum 1 VCPUs
>> (XEN) Scrubbing Free RAM: .......done.
>> (XEN) Xen trace buffers: disabled
>> (XEN) Std. Loglevel: All
>> (XEN) Guest Loglevel: All
>> (XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch input to
>> Xen)
>> (XEN) Freed 116kB init memory.
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel
>
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