Re: spinlock problem

[Marco Stornelli <marco.stornelli@coritel.it>]

Oops, I meant soft lockup...

Marco Stornelli ha scritto:
> But does the test work? Maybe the kernel is configured with softlook
> check (see the kernel menu under kernel hacking), try to disable it and
> recompile. However there's something strange...
> 
> Caner Altinbasak ha scritto:
>> Hi!
>> I am using a Curtiss Wright DY4-183 board with PPC7447 CPU. I've a pci
>> graphics card with a M9 GPU on it. There is a transparent bridge between the
>> GPU and my PCI bus. My problem a trouble with radeon_dri driver. I want to
>> run a miniglx application to see how the graphics performance is but I am
>> having the following error. I think there is a problem with unhandled
>> interrupts! Have an idea?
>>
>> -bash-3.2# ./sample_server &
>> [1] 1082
>> -bash-3.2# [miniglx] probed chipset 0x4c66
>> got MMIOAddress 0x1801e000 offset 67108864
>> shared virtual width is 1024
>> [drm] added 8192 byte SAREA at 0x61036000
>> [drm] mapped SAREA 0x61036000 to 0x18026000, size 8192
>> [drm] framebuffer handle = 0x80000000
>> [drm] register handle = 0x70000000
>> [pci] 8192 kB allocated with handle 0x62187000
>> [pci] ring handle = 0x62187000
>> [pci] ring read ptr handle = 0x62288000
>> [pci] vertex/indirect buffers handle = 0x62289000
>> [pci] GART texture map handle = 0x62489000
>> Using 8 MB AGP aperture
>> Using 1 MB for the ring buffhStart = 1040, hEnd = 1136, hTotal = 1312
>> vStart = 769, vEnd = 772, vTotal = 800
>> h_total_disp = 0x7f00a3    hsync_strt_wid = 0x8c040d
>> v_total_disp = 0x2ff031f           vsync_strt_wid = 0x830300
>> pixclock = 12699
>> freq = 7874
>> freq = 7874, PLL min = 12000, PLL max = 35000
>> ref_div = 5, ref_clk = 2700, output_freq = 15748
>> ref_div = 5, ref_clk = 2700, output_freq = 15748
>> post div = 0x1
>> fb_div = 0x1d
>> ppll_div_3 = 0x1001d
>> er
>> Using 2 MB for BUG: soft lockup detected on CPU#0!
>> NIP: 40042044 LR: 40042140 CTR: 400185B4
>> REGS: 5e25bbb0 TRAP: 0901   Not tainted  (2.6.16.13.CWCEC.K)
>> MSR: 00009032 <EE,ME,IR,DR>  CR: 2490C142  XER: 20000000
>> TASK = 40aa78b0[1082] 'sample_server' THREAD: 5e25a000
>> NIP [40042044] handle_IRQ_event+0x34/0xb8
>> LR [40042140] __do_IRQ+0x78/0x1a0
>> Call Trace:
>> [5E25BC60] [400188A8] cw_pic_unmask_irq_183+0x118/0x138 (unreliable)
>> [5E25BC80] [40042140] __do_IRQ+0x78/0x1a0
>> [5E25BCB0] [4000B1E4] do_IRQ+0x44/0x88
>> [5E25BCD0] [40004F1C] ret_from_except+0x0/0x14
>> [5E25BD90] [40049DDC] __alloc_pages+0x70/0x2a4
>> [5E25BDA0] [40042074] handle_IRQ_event+0x64/0xb8
>> [5E25BDC0] [40042140] __do_IRQ+0x78/0x1a0
>> [5E25BDF0] [4000B1E4] do_IRQ+0x44/0x88
>> [5E25BE10] [40004F1C] ret_from_except+0x0/0x14
>> [5E25BED0] [400244CC] __do_softirq+0x50/0x120
>> [5E25BF00] [40024614] do_softirq+0x78/0x80
>> [5E25BF10] [4002478C] irq_exit+0x60/0x78
>> [5E25BF20] [4000B1E8] do_IRQ+0x48/0x88
>> [5E25BF40] [40004F1C] ret_from_except+0x0/0x14
>> Instruction dump:
>> 9421ffe0 bf61000c 7cbf2b78 7c7b1b78 7c9d2378 90010024 80050004 74092000
>> 40820010 7c0000a6 60008000 7c000124 <3bc00000> 3b800000 48000010 83ff0014
>> vertex/indirect buffers
>> Using 1 MB for AGP textures
>> Will use back buffer at offset 0x300000
>> Will use depth buffer at offset 0x600000
>> Will use 56320 kb for textures at offset 0x900000
>> [drm] Added 32 65536 byte vertex/indirect buffers
>> [drm] dma control initialized, using IRQ 16
>> [drm] Initialized kernel gart heap manager, 5111808
>> color tiling disabled
>> page flipping disabled
>> [miniglx] Setting mode: visible 1024x768 virtual 1024x768x32
>> [miniglx] Readback mode: visible 1024x768 virtual 1024x768x32
>> RADEONEngineRestore
>>
>>
>>
>> ------------------------------------------------------------------------
>>
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>> https://ozlabs.org/mailman/listinfo/linuxppc-embedded
> 

-- 
Marco Stornelli
Embedded Software Engineer
CoRiTeL - Consorzio di Ricerca sulle Telecomunicazioni
http://www.coritel.it

marco.stornelli@coritel.it
+39 06 72582838