- 16 Oct, 2008 40 commits
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Thomas Gleixner authored
This code is not ready yet. Signed-off-by:Thomas Gleixner <tglx@linutronix.de>
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Thomas Gleixner authored
Revert the sparse irq changes in m68k/s390/sparc and just define nr_irqs as NR_IRQS for those architectures. Signed-off-by: -
Cyrill Gorcunov authored
Use APIC_DIVISOR being set to 16 for both 32/64bit mode. To escape APIC timer underflow during calibration set it to the maximum possible value. Also typo error (CONFG instead of proper CONFIG) fixed. The error was caught by Venkatesh Pallipadi, thanks a lot Venkatesh! See details on http://lkml.org/lkml/2008/10/9/425Reported-by:
Venkatesh Pallipad <venkatesh.pallipadi@intel.com> Signed-off-by:
Cyrill Gorcunov <gorcunov@gmail.com> Acked-by:
"Maciej W. Rozycki" <macro@linux-mips.org> Signed-off-by:
Ingo Molnar <mingo@elte.hu>
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Yinghai Lu authored
Signed-off-by:
Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by:
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Russ Anderson authored
Create /sys/firmware/sgi_uv sysfs entries for partition_id and coherence_id. Signed-off-by:
Russ Anderson <rja@sgi.com> Signed-off-by:
H. Peter Anvin <hpa@zytor.com> Signed-off-by:
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Russ Anderson authored
Add a bios call to return partitioning related info. Signed-off-by:
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Russ Anderson authored
Add the EFI callback function and associated wrapper code. Initialize SAL system table entry info at boot time. Signed-off-by:
Paul Jackson <pj@sgi.com> Acked-by:
Huang Ying <ying.huang@intel.com> Signed-off-by:
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Russ Anderson authored
Look for a UV entry in the EFI tables. Signed-off-by:
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Ingo Molnar authored
fix: arch/x86/kernel/uv_irq.c: In function 'uv_ack_apic': arch/x86/kernel/uv_irq.c:26: error: implicit declaration of function 'ack_APIC_irq' Signed-off-by: -
Dean Nelson authored
Provide a means for UV interrupt MMRs to be setup with the message to be sent when an MSI is raised. Signed-off-by:
Dean Nelson <dcn@sgi.com> Signed-off-by:
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Venki Pallipadi authored
Fix the below compile warnings due to recent HPET MSI changes arch/x86/kernel/hpet.c:48: warning: 'hpet_devs' defined but not used arch/x86/kernel/hpet.c:50: warning: 'per_cpu__cpu_hpet_dev' defined but not used Reported-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Yinghai Lu authored
v2: fix hpet compiling error v3: Bjorn want to use dev_printk instead Signed-off-by:
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Cyrill Gorcunov authored
Clean up obscure for() cycle with straight while() form Signed-off-by:
Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by:
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Yinghai Lu authored
Arjan van de Ven noticed that we changed IRQ numbers from decimal to hex in /proc/interrupts - that can break user-space utilities like irqbalanced. Reported-by:
Arjan van de Ven <arjan@linux.intel.com> Signed-off-by:
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Yinghai Lu authored
when SPARSE_IRQ is not used, should still use irq_desc->lock Signed-off-by:
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Jack Steiner authored
Fix problem caused by reordering of the calls to uv_cpu_init() & uv_system_init. Originally, uv_cpu_init() was called AFTER uv_system_init. This order was recently broken as a side-effect of other patches. With this patch, initialization of cpu 0 is now done by the system_init call. Signed-off-by:
Jack Steiner <steiner@sgi.com> Signed-off-by:
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Cyrill Gorcunov authored
Interrupt remapping could lead to NULL dereference in case of kzalloc failed and memory leak in other way. So fix the both cases. Signed-off-by:
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Andrew Morton authored
caused by commit a532e19680ada3b8579b81e67e76d3ebd19c340f Author: Yinghai Lu <yhlu.kernel@gmail.com> Date: Wed Aug 20 20:46:25 2008 -0700 x86: sparse_irq needs spin_lock in allocations Signed-off-by: -
Yinghai Lu authored
Signed-off-by:
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Yinghai Lu authored
Steven Noonan reported a boot hang when using irqpoll and CONFIG_HAVE_SPARSE_IRQ=y. The irqpoll loop needs to be updated to not iterate from 1 to nr_irqs but to iterate via for_each_irq_desc(). (in the former case desc can be NULL which crashes the box) Reported-by:
Steven Noonan <steven@uplinklabs.net> Tested-by:
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Cyrill Gorcunov authored
Yinghai Lu reported: | > 0 add_pin_to_irq: irq 15 --> apic 0 pin 15 | > IOAPIC[0]: Set routing entry (8-15 -> 0x3f -> IRQ 15 Mode:0 Active:0) | > 8-16 8-17 8-18 8-19 8-20 8-21 8-22 8-23 (apicid-pin) not connected | > 9-0 9-1 9-2 9-3 9-4 9-5 9-6 9-7 9-8 9-9 9-10 9-11 9-12 9-13 9-14 9-15 | > 9-16 9-17 9-18 9-19 9-20 9-21 9-22 9-23 (apicid-pin) not connected | > | | only first one not connected at first, and ... here is a quick fix for this. Signed-off-by:
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Cyrill Gorcunov authored
If we don't have CONFIG_X86_PM_TIMER=y compiler warns about unused variables. Move PM timer based calibration into a separate function and make the code cleaner and the compiler happy as well. Signed-off-by:
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Cyrill Gorcunov authored
On 82489DX we don't have ESR register so we should not write it. Signed-off-by:
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Cyrill Gorcunov authored
lapic_setup_esr doesn't handle esr_disable inquire. The error brought in during unification process. Fix it. Signed-off-by:
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Yinghai Lu authored
... and tidy up the printouts. Suggested by Andrew Morton. Signed-off-by:
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Yinghai Lu authored
Signed-off-by:
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Cyrill Gorcunov authored
Replace __DO_ACTION macro with io_apic_modify_irq function. This allow us to 'grep' definitions being hided by __DO_ACTION macro: __unmask_IO_APIC_irq __mask_IO_APIC_irq __mask_and_edge_IO_APIC_irq __unmask_and_level_IO_APIC_irq Signed-off-by:
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Steven Noonan authored
Added dummy function for hpet_setup_msi_irq(). Signed-off-by:
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Venki Pallipadi authored
On Sat, Sep 06, 2008 at 06:03:53AM -0700, Ingo Molnar wrote: > > it crashes two testsystems, the fault on a NULL pointer in hpet init, > with: > > initcall print_all_ICs+0x0/0x520 returned 0 after 26 msecs > calling hpet_late_init+0x0/0x1c0 > BUG: unable to handle kernel NULL pointer dereference at 000000000000008c > IP: [<ffffffff80d228be>] hpet_late_init+0xfe/0x1c0 > PGD 0 > Oops: 0000 [1] SMP > CPU 0 > Modules linked in: > Pid: 1, comm: swapper Not tainted 2.6.27-rc5 #29725 > RIP: 0010:[<ffffffff80d228be>] [<ffffffff80d228be>] hpet_late_init+0xfe/0x1c0 > RSP: 0018:ffff88003fa07dd0 EFLAGS: 00010246 > RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 > RDX: ffffc20000000160 RSI: 0000000000000000 RDI: 0000000000000003 > RBP: ffff88003fa07e90 R08: 0000000000000000 R09: ffff88003fa07dd0 > R10: 0000000000000001 R11: 0000000000000000 R12: ffff88003fa07dd0 > R13: 0000000000000002 R14: ffffc20000000000 R15: 000000006f57e511 > FS: 0000000000000000(0000) GS:ffffffff80cf6a80(0000) knlGS:0000000000000000 > CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b > CR2: 000000000000008c CR3: 0000000000201000 CR4: 00000000000006e0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > Process swapper (pid: 1, threadinfo ffff88003fa06000, task ffff88003fa08000) > Stack: 00000000fed00000 ffffc20000000000 0000000100000003 0000000800000002 > 0000000000000000 0000000000000000 0000000000000000 0000000000000000 > 0000000000000000 0000000000000000 0000000000000000 0000000000000000 > Call Trace: > [<ffffffff80d227c0>] ? hpet_late_init+0x0/0x1c0 > [<ffffffff80209045>] do_one_initcall+0x45/0x190 > [<ffffffff80296f39>] ? register_irq_proc+0x19/0xe0 > [<ffffffff80d0d140>] ? early_idt_handler+0x0/0x73 > [<ffffffff80d0dabc>] kernel_init+0x14c/0x1b0 > [<ffffffff80942ac1>] ? trace_hardirqs_on_thunk+0x3a/0x3f > [<ffffffff8020dbd9>] child_rip+0xa/0x11 > [<ffffffff8020ceee>] ? restore_args+0x0/0x30 > [<ffffffff80d0d970>] ? kernel_init+0x0/0x1b0 > [<ffffffff8020dbcf>] ? child_rip+0x0/0x11 > Code: 20 48 83 c1 01 48 39 f1 75 e3 44 89 e8 4c 8b 05 29 29 22 00 31 f6 48 8d 78 01 66 66 90 89 f0 48 8d 04 80 48 c1 e0 05 4a 8d 0c 00 <f6> 81 8c 00 00 00 08 74 26 8b 81 80 00 00 00 8b 91 88 00 00 00 > RIP [<ffffffff80d228be>] hpet_late_init+0xfe/0x1c0 > RSP <ffff88003fa07dd0> > CR2: 000000000000008c > Kernel panic - not syncing: Fatal exception There was one code path, with CONFIG_PCI_MSI disabled, where we were accessing hpet_devs without initialization. That resulted in the above crash. The change below adds a check for hpet_devs. Signed-off-by:
Shaohua Li <shaohua.li@intel.com> Signed-off-by:
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Cyrill Gorcunov authored
Do not use KERN_DEBUG several times on the same line being printed. Introduced by mine previous patch, sorry. Reported-by:
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Yinghai Lu authored
Signed-off-by:
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Yinghai Lu authored
Andrew said, we don't need duplicated panic. because __alloc_bootmem already have that. Signed-off-by:
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Cyrill Gorcunov authored
By changing printout form we are able to shrink (and clean up) code a bit. Former printout example: init IO_APIC IRQs IO-APIC (apicid-pin) 1-1, 1-2, 1-3 not connected. IO-APIC (apicid-pin) 2-1, 2-2, 2-3 not connected. New printout example: init IO_APIC IRQs 1-1 1-2 1-3 (apicid-pin) not connected 2-1 2-2 2-3 (apicid-pin) not connected Signed-off-by:
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venkatesh.pallipadi@intel.com authored
Initialize a per CPU HPET MSI timer when possible. We retain the HPET timer 0 (IRQ 0) and timer 1 (IRQ 8) as is when legacy mode is being used. We setup the remaining HPET timers as per CPU MSI based timers. This per CPU timer will eliminate the need for timer broadcasting with IRQ 0 when there is non-functional LAPIC timer across CPU deep C-states. If there are more CPUs than number of available timers, CPUs that do not find any timer to use will continue using LAPIC and IRQ 0 broadcast. Signed-off-by:
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Ingo Molnar authored
small style cleanups. Signed-off-by: -
venkatesh.pallipadi@intel.com authored
Basic HPET MSI setup code. Routines to perform basic MSI read write in HPET memory map and setting up irq_chip for HPET MSI. Signed-off-by:
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venkatesh.pallipadi@intel.com authored
Preparatory patch before the actual HPET MSI changes. Sets up hpet_set_mode and hpet_next_event for the MSI related changes. Just the code refactoring and should be zero functional change. Signed-off-by:
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venkatesh.pallipadi@intel.com authored
Change the IRQ affinity in the process context when the IRQ is disabled. Signed-off-by:
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Yinghai Lu authored
need to change irq to int too Signed-off-by: -
Dean Nelson authored
Extraneous call to irq_to_desc(). Signed-off-by:
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