Re: [Xen-devel] simple scheduler

["michele.paolino" <michele.paolino@xxxxxxxxxxxxxxx>]

Thanks George, now it works! In my code SCHEDULE_SOFTIRQ is never getting
raised. Now I raise it in add_vcpu function. Is this the best place to raise
SCHEDULE_SOFTIRQ?
Michele

On Wed, Feb 17, 2010 at 12:43 PM, George Dunlap <George.Dunlap@xxxxxxxxxxxxx
> wrote:

> 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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