Re: question about cpufreq

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* Re: question about cpufreq
       [not found] <da0ff0cb-535e-112f-3f9c-471c9653c898@rock-chips.com>
@ 2016-07-11 18:39 ` Viresh Kumar
  0 siblings, 0 replies; only message in thread
From: Viresh Kumar @ 2016-07-11 18:39 UTC (permalink / raw)
  To: Finley Xiao, rjw
  Cc: Heiko Stuebner, 黄涛, 谢修鑫,
	陈亮(底层平台),
	许剑群, linux-pm

+Rafael and the list.

On 07-07-16, 16:13, Finley Xiao wrote:
> Hi Viresh,
> 
> If up and down the cpus, the system will reports errors.
> I think it has nothing to do with the platform, So could you help analyse
> this case?
> 
> software:
>     Linux 4.4

A lot of development happened after that on the OPP core to making things
better/stable.

> hardware:
>     cluster0: cpu0 cpu1 cpu2 cpu3
>     cluster1: cpu4 cpu5

It would be helpful to look at your DT files to see how are you setting your OPP
bindings.

> 
> *cpu down:*
> root@xxxx:/ # echo 0 > /sys/devices/system/cpu/cpu4/online
> [  128.895183] CPU3: update max cpu_capacity 421
> [  128.899148] CPU5: update max cpu_capacity 683
> [  128.908644] CPU4: shutdown
> [  128.908929] psci: CPU4 killed.
> root@xxxx:/ # echo 0 > /sys/devices/system/cpu/cpu5/online
> [  131.711079] CPU3: update max cpu_capacity 421
> [  131.724705] CPU5: shutdown
> [  131.738999] psci: Retrying again to check for CPU kill
> [  131.739465] psci: CPU5 killed.
> [  131.756457] cpu cpu4: Failed to find opp_table: -19

I am not sure why this should happen, now that you have offlined both CPUs of
this cluster.

Also I don't see this error in v4.4 at all.

> 
> *cpu up:*
> root@xxxx:/ # echo 1 > /sys/devices/system/cpu/cpu4/online
> [  140.433942] Detected PIPT I-cache on CPU4
> [  140.434409] CPU4: found redistributor 100 region 0:0x00000000fef80000
> [  140.435050] CPU4: update cpu_capacity 683
> [  140.435415] CPU4: Booted secondary processor [410fd082]
> [  140.438396] cpu cpu4: opp_list_debug_create_link: Failed to create link

This code wasn't there in 4.4 for sure. What have you based your stuff on ?

> [  140.439080] CPU3: update max cpu_capacity 421
> [  140.440056] cpu cpu4: _add_opp_dev: Failed to register opp debugfs (-12)
> [  140.440689] cpu cpu5: opp_list_debug_create_link: Failed to create link
> [  140.441285] cpu cpu5: _add_opp_dev: Failed to register opp debugfs (-12)
> 
> root@xxxx:/ # echo 1 > /sys/devices/system/cpu/cpu5/online
> [  143.906417] Detected PIPT I-cache on CPU5
> [  143.906820] CPU5: found redistributor 101 region 0:0x00000000fefa0000
> [  143.907456] CPU5: update cpu_capacity 683
> [  143.907819] CPU5: Booted secondary processor [410fd082]
> [  143.911006] CPU5: update max cpu_capacity 683
> [  143.911253] ------------[ cut here ]------------
> [  143.911264] WARNING: at drivers/base/power/opp/core.c:1452
> [  143.911268]
> [  143.911285] CPU: 0 PID: 1384 Comm: sh Not tainted 4.4.14 #1107
> [  143.911290] Hardware name: Rockchip RK3399 Evaluation Board v1 (Android)
> (DT)
> [  143.911300] task: ffffffc0bdad5400 ti: ffffffc0b07e0000 task.ti:
> ffffffc0b07e0000
> [  143.911327] PC is at dev_pm_opp_set_regulator+0x64/0x100
> [  143.911336] LR is at dev_pm_opp_set_regulator+0x38/0x100
> [  143.911344] pc : [<ffffff8008448b74>] lr : [<ffffff8008448b48>] pstate:
> 80000145
> [  143.911348] sp : ffffffc0b07e3ac0
> [  143.911362] x29: ffffffc0b07e3ac0 x28: ffffffc0b07e0000
> [  143.911372] x27: ffffff8008f1d720 x26: ffffff8008d52ed8
> [  143.911383] x25: ffffff8008d54000 x24: ffffff8008b9ecc6
> [  143.911393] x23: ffffff8008b9ecc6 x22: ffffffc0f7f7c4d8
> [  143.911410] x21: ffffffc0e64cbc00 x20: ffffff8008db4000
> [  143.911420] x19: ffffff8008db4540 x18: 0000000000000000
> [  143.911430] x17: 0000000000000000 x16: 0000000000000000
> [  143.911440] x15: 0000000000000000 x14: 0000000000000000
> [  143.911451] x13: ffff000000000000 x12: 0000000000000030
> [  143.911461] x11: 0000000000000028 x10: 0101010101010101
> [  143.911470] x9 : 0000000000000001 x8 : 7f7f7f7f7f7f7f7f
> [  143.911480] x7 : 686aff786b6f6f74 x6 : 0000000000800f19
> [  143.911490] x5 : ffffffc0f7f7c4d8 x4 : ffffffc0e64cbd28
> [  143.911500] x3 : ffffff8008db4530 x2 : ffffffc0e603c100
> [  143.911510] x1 : ffffffc0e64cbd38 x0 : ffffffc0e6038d00
> [  143.911516]
> [  143.911516] PC: 0xffffff8008448af4:
> [  143.911544] 8af4  97fffb87 9114c280 91004000 9413c527 a94153f3 a8c37bfd
> d65f03c0 a9bc7bfd
> [  143.911568] 8b14  910003fd a90153f3 90004b74 f9001bf7 9114c293 aa0103f7
> 91004273 a9025bf5
> [  143.911592] 8b34  aa0003f6 aa1303e0 9413c5af aa1603e0 97fffe6b aa0003f5
> b40004e0 f9409ea1
> [  143.911615] 8b54  9104e000 eb00003f 54000060 d4210000 14000005 f940c6a0
> b140041f 54000088
> [  143.911639] 8b74  d4210000 128001f3 14000018 aa1603e0 aa1703e1 97fd5e0f
> b140041f aa0003e4
> [  143.911663] 8b94  540001a9 3108141f 2a0003f3 540001e0 d0002b62 d0003d41
> 91370042 aa1603e0
> [  143.911687] 8bb4  9139f821 91090042 aa1703e3 97ffb45c 14000006 f900c6a0
> aa1303e0 9413c4f3
> [  143.911710] 8bd4  52800000 14000009 aa1503e0 97fffb4c 14000002 12800173
> 9114c280 91004000
> [  143.911716]
> [  143.911716] LR: 0xffffff8008448ac8:
> [  143.911740] 8ac8  91370042 aa1303e0 91398021 91088042 97ffb496 14000007
> f90017a2 97f5057e
> [  143.911763] 8ae8  f94017a2 aa0203e0 f900bc5f 97fffb87 9114c280 91004000
> 9413c527 a94153f3
> [  143.911787] 8b08  a8c37bfd d65f03c0 a9bc7bfd 910003fd a90153f3 90004b74
> f9001bf7 9114c293
> [  143.911817] 8b28  aa0103f7 91004273 a9025bf5 aa0003f6 aa1303e0 9413c5af
> aa1603e0 97fffe6b
> [  143.911841] 8b48  aa0003f5 b40004e0 f9409ea1 9104e000 eb00003f 54000060
> d4210000 14000005
> [  143.911864] 8b68  f940c6a0 b140041f 54000088 d4210000 128001f3 14000018
> aa1603e0 aa1703e1
> [  143.911888] 8b88  97fd5e0f b140041f aa0003e4 540001a9 3108141f 2a0003f3
> 540001e0 d0002b62
> [  143.911912] 8ba8  d0003d41 91370042 aa1603e0 9139f821 91090042 aa1703e3
> 97ffb45c 14000006
> [  143.911917]
> [  143.911917] SP: 0xffffffc0b07e3a40:
> [  143.911941] 3a40  08db4000 ffffff80 e64cbc00 ffffffc0 f7f7c4d8 ffffffc0
> 08b9ecc6 ffffff80
> [  143.911965] 3a60  08b9ecc6 ffffff80 08d54000 ffffff80 08d52ed8 ffffff80
> 08f1d720 ffffff80
> [  143.911988] 3a80  b07e0000 ffffffc0 b07e3ac0 ffffffc0 08448b48 ffffff80
> b07e3ac0 ffffffc0
> [  143.912013] 3aa0  08448b74 ffffff80 80000145 00000000 08db4540 ffffff80
> f7f7c4d8 ffffffc0
> [  143.912036] 3ac0  b07e3b00 ffffffc0 08633178 ffffff80 00000000 00000000
> f7f7c4d8 ffffffc0
> [  143.912060] 3ae0  f7be8e00 ffffffc0 da7cca80 ffffffc0 00000000 00000000
> 08d52ed8 ffffff80
> [  143.912083] 3b00  b07e3b50 ffffffc0 0862c3c8 ffffff80 f7be8e00 ffffffc0
> 08f1d850 ffffff80
> [  143.912106] 3b20  08f1d000 ffffff80 08d2d000 ffffff80 00000001 00000000
> 00000005 00000000
> [  143.912112]
> [  143.912112] X0: 0xffffffc0e6038c80:
> [  143.912136] 8c80  75676572 6f74616c 2d362e72 50505553 0000594c 00000000
> 00000000 00000000
> [  143.912158] 8ca0  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.912181] 8cc0  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.912204] 8ce0  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.912228] 8d00  f7f694d8 ffffffc0 e602a828 ffffffc0 e602a828 ffffffc0
> 00000001 00000000
> [  143.912251] 8d20  000c3500 000c3500 e6038d80 ffffffc0 00000000 00000000
> 00000000 00000000
> [  143.912276] 8d40  00000000 00000000 00000000 00000000 e602a800 ffffffc0
> e8c336c0 ffffffc0
> [  143.912302] 8d60  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.912308]
> [  143.912308] X1: 0xffffffc0e64cbcb8:
> [  143.912333] bcb8  00000000 00000000 ffff5bb4 00000000 080ae3b4 ffffff80
> e64cbc90 ffffffc0
> [  143.912356] bcd8  00200001 ffffffff ffffffff 00000000 00000000 00000000
> 00000000 00000000
> [  143.912379] bcf8  00000000 00000000 e904dc00 ffffffc0 00000008 00000000
> 00000000 00000000
> [  143.912403] bd18  00000000 00000000 00000000 00000000 c07a2680 ffffffc0
> e603c100 ffffffc0
> [  143.912427] bd38  e64cbd38 ffffffc0 e64cbd38 ffffffc0 f7f947b8 ffffffc0
> 00009c40 00000000
> [  143.912454] bd58  00000000 00000001 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.912478] bd78  00000000 00000000 e6038b00 ffffffc0 e6038d00 ffffffc0
> e8c33300 ffffffc0
> [  143.912501] bd98  35757063 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.912506]
> [  143.912506] X2: 0xffffffc0e603c080:
> [  143.912531] c080  31757063 ffffff00 e603c088 ffffffc0 e603c088 ffffffc0
> 00000000 00000000
> [  143.912554] c0a0  00000000 00000000 b077ba00 ffffffc0 00000028 00000000
> 00000000 00000000
> [  143.912578] c0c0  00000000 00000000 e64cbc00 ffffffc0 00000000 00000000
> 00000050 00000000
> [  143.912601] c0e0  f7f95310 ffffffc0 e8c35b40 ffffffc0 00000000 00000000
> 00000000 00000000
> [  143.912625] c100  e64cbd28 ffffffc0 c07a2680 ffffffc0 f7f7c4d8 ffffffc0
> 00000000 00000000
> [  143.912648] c120  00000000 00000000 e8c33300 ffffffc0 00000000 00000000
> 00000000 00000000
> [  143.912671] c140  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.912693] c160  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.912699]
> [  143.912699] X3: 0xffffff8008db44b0:
> [  143.912722] 44b0  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.912744] 44d0  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.912767] 44f0  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.912790] 4510  00000000 00000000 00010001 00000000 da76fc50 ffffffc0
> da76fc50 ffffffc0
> [  143.912815] 4530  e9392400 ffffffc0 e65c1400 ffffffc0 00000000 00000000
> 08db4548 ffffff80
> [  143.912837] 4550  08db4548 ffffff80 bdad5400 ffffffc0 00000000 00000000
> 00000001 00000000
> [  143.912862] 4570  08db4570 ffffff80 08db4570 ffffff80 00000000 00000000
> 00000000 00000000
> [  143.912886] 4590  e925e4f0 ffffffc0 e93640f0 ffffffc0 00000001 00000000
> 08db45a8 ffffff80
> [  143.912892]
> [  143.912892] X4: 0xffffffc0e64cbca8:
> [  143.912916] bca8  080eb718 ffffff80 00000200 dead0000 00000000 00000000
> ffff5bb4 00000000
> [  143.912939] bcc8  080ae3b4 ffffff80 e64cbc90 ffffffc0 00200001 ffffffff
> ffffffff 00000000
> [  143.912967] bce8  00000000 00000000 00000000 00000000 00000000 00000000
> e904dc00 ffffffc0
> [  143.912991] bd08  00000008 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.913014] bd28  c07a2680 ffffffc0 e603c100 ffffffc0 e64cbd38 ffffffc0
> e64cbd38 ffffffc0
> [  143.913037] bd48  f7f947b8 ffffffc0 00009c40 00000000 00000000 00000001
> 00000000 00000000
> [  143.913060] bd68  00000000 00000000 00000000 00000000 00000000 00000000
> e6038b00 ffffffc0
> [  143.913084] bd88  e6038d00 ffffffc0 e8c33300 ffffffc0 35757063 00000000
> 00000000 00000000
> [  143.913089]
> [  143.913089] X5: 0xffffffc0f7f7c458:
> [  143.913112] c458  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.913135] c478  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.913157] c498  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.913179] c4b8  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000001
> [  143.913203] c4d8  00000000 00000000 e8940400 ffffffc0 e8942380 ffffffc0
> e89cc020 ffffffc0
> [  143.913227] c4f8  f7f694f0 ffffffc0 e9284010 ffffffc0 e91ba980 ffffffc0
> 08db3130 ffffff80
> [  143.913250] c518  e8943d20 ffffffc0 00000003 00000007 00000000 00000000
> 00000000 00000000
> [  143.913273] c538  00000000 00000000 f7f7c540 ffffffc0 f7f7c540 ffffffc0
> bdad5400 ffffffc0
> [  143.913293]
> [  143.913293] X19: 0xffffff8008db44c0:
> [  143.913315] 44c0  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.913337] 44e0  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.913360] 4500  00000000 00000000 00000000 00000000 00000000 00000000
> 00010001 00000000
> [  143.913384] 4520  da76fc50 ffffffc0 da76fc50 ffffffc0 e9392400 ffffffc0
> e65c1400 ffffffc0
> [  143.913408] 4540  00000000 00000000 08db4548 ffffff80 08db4548 ffffff80
> bdad5400 ffffffc0
> [  143.913431] 4560  00000000 00000000 00000001 00000000 08db4570 ffffff80
> 08db4570 ffffff80
> [  143.913454] 4580  00000000 00000000 00000000 00000000 e925e4f0 ffffffc0
> e93640f0 ffffffc0
> [  143.913477] 45a0  00000001 00000000 08db45a8 ffffff80 08db45a8 ffffff80
> 00000000 00000000
> [  143.913483]
> [  143.913483] X20: 0xffffff8008db3f80:
> [  143.913509] 3f80  08db42f0 ffffff80 08db42b0 ffffff80 08db42d0 ffffff80
> 08db4270 ffffff80
> [  143.913533] 3fa0  00000000 00000000 08db41d0 ffffff80 08db41b0 ffffff80
> 08db4190 ffffff80
> [  143.913557] 3fc0  08db4170 ffffff80 08db4150 ffffff80 08db4130 ffffff80
> 08db4110 ffffff80
> [  143.913586] 3fe0  08db40f0 ffffff80 08db40d0 ffffff80 08db40b0 ffffff80
> 00000000 00000000
> [  143.913611] 4000  08db4030 ffffff80 08db4290 ffffff80 08db4090 ffffff80
> 08db4070 ffffff80
> [  143.913635] 4020  08db4050 ffffff80 00000000 00000000 08bf26cb ffffff80
> 000001a4 00000000
> [  143.913658] 4040  0843e9c8 ffffff80 0843ef98 ffffff80 08bf2348 ffffff80
> 00000124 00000000
> [  143.913682] 4060  0843e700 ffffff80 00000000 00000000 08bf2358 ffffff80
> 00000124 00000000
> [  143.913688]
> [  143.913688] X21: 0xffffffc0e64cbb80:
> [  143.913712] bb80  00000000 00000000 00000000 00000000 ffffffff ffffffff
> ffffffff ffffffff
> [  143.913735] bba0  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.913758] bbc0  00000001 00000000 e64cbbc8 ffffffc0 e64cbbc8 ffffffc0
> 00000000 00000000
> [  143.913781] bbe0  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.913805] bc00  e65c1400 ffffffc0 e9392400 ffffffc0 00000001 00000000
> e64cbc18 ffffffc0
> [  143.913827] bc20  e64cbc18 ffffffc0 00000000 00000000 00000000 00000000
> 00000005 00000000
> [  143.913852] bc40  08d36bb0 ffffff80 00100010 00000000 00000000 00000000
> e64cbc50 ffffffc0
> [  143.913875] bc60  00000000 00000000 e64cbc60 ffffffc0 00000000 00000000
> e64cbc70 ffffffc0
> [  143.913881]
> [  143.913881] X22: 0xffffffc0f7f7c458:
> [  143.913903] c458  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.913926] c478  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.913948] c498  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.913970] c4b8  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000001
> [  143.913994] c4d8  00000000 00000000 e8940400 ffffffc0 e8942380 ffffffc0
> e89cc020 ffffffc0
> [  143.914017] c4f8  f7f694f0 ffffffc0 e9284010 ffffffc0 e91ba980 ffffffc0
> 08db3130 ffffff80
> [  143.914040] c518  e8943d20 ffffffc0 00000003 00000007 00000000 00000000
> 00000000 00000000
> [  143.914064] c538  00000000 00000000 f7f7c540 ffffffc0 f7f7c540 ffffffc0
> bdad5400 ffffffc0
> [  143.914070]
> [  143.914070] X23: 0xffffff8008b9ec46:
> [  143.914094] ec44  65686373 696c7564 7720676e 656c6968 6f746120 3a63696d
> 2f732520 302f6425
> [  143.914118] ec64  38302578 01000a78 616e5534 20656c62 73206f74 72207465
> 78616c65 6d6f645f
> [  143.914142] ec84  5f6e6961 6576656c 61000a6c 63656666 5f646574 00757063
> 656c6966 656d616e
> [  143.914167] eca4  646c6f00 6469705f 696f7600 63002a64 656c6c61 6f690072
> 6961775f 72730074
> [  143.914190] ecc4  70635f63 72730075 696e5f63 73640064 70635f74 73640075
> 696e5f74 72730064
> [  143.914215] ece4  69705f63 72730064 67745f63 73006469 6e5f6372 00646967
> 5f747364 00646970
> [  143.914244] ed04  5f747364 64696774 74736400 69676e5f 72660064 735f7165
> 656c6163 6361665f
> [  143.914269] ed24  00726f74 5f757063 6c616373 61665f65 726f7463 69747500
> 6176006c 74616972
> [  143.914292] ed44  006e6f69 5f78616d 736f6f62 75730074 73656363 61740073
> 74656772 7570635f
> [  143.914298]
> [  143.914298] X24: 0xffffff8008b9ec46:
> [  143.914322] ec44  65686373 696c7564 7720676e 656c6968 6f746120 3a63696d
> 2f732520 302f6425
> [  143.914346] ec64  38302578 01000a78 616e5534 20656c62 73206f74 72207465
> 78616c65 6d6f645f
> [  143.914370] ec84  5f6e6961 6576656c 61000a6c 63656666 5f646574 00757063
> 656c6966 656d616e
> [  143.914393] eca4  646c6f00 6469705f 696f7600 63002a64 656c6c61 6f690072
> 6961775f 72730074
> [  143.914417] ecc4  70635f63 72730075 696e5f63 73640064 70635f74 73640075
> 696e5f74 72730064
> [  143.914441] ece4  69705f63 72730064 67745f63 73006469 6e5f6372 00646967
> 5f747364 00646970
> [  143.914465] ed04  5f747364 64696774 74736400 69676e5f 72660064 735f7165
> 656c6163 6361665f
> [  143.914489] ed24  00726f74 5f757063 6c616373 61665f65 726f7463 69747500
> 6176006c 74616972
> [  143.914513] ed44  006e6f69 5f78616d 736f6f62 75730074 73656363 61740073
> 74656772 7570635f
> [  143.914519]
> [  143.914519] X25: 0xffffff8008d53f80:
> [  143.914543] 3f80  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.914565] 3fa0  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.914589] 3fc0  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.914611] 3fe0  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.914634] 4000  00000000 00000000 00000000 00000000 e6480000 ffffffc0
> 00000800 00000000
> [  143.914657] 4020  00000001 00000000 00000000 00000000 00000006 00000000
> 00000009 00000000
> [  143.914680] 4040  00000000 00000000 00000000 00000000 00000000 00000000
> 00000001 00000000
> [  143.914707] 4060  00000000 00000000 00000078 00000000 00400000 0000000a
> 00000003 00000000
> [  143.914714]
> [  143.914714] X26: 0xffffff8008d52e58:
> [  143.914736] 2e58  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.914758] 2e78  00000000 00000000 00000000 00000001 00000001 00000000
> 00000000 00000000
> [  143.914781] 2e98  000000ff 00000000 0037b0d6 0000001f 00000001 00000000
> 00000000 00000000
> [  143.914804] 2eb8  f8000000 00000000 07e00000 ffffff80 00000000 00000000
> 00000000 00000000
> [  143.914827] 2ed8  0000003f 00000000 0000003f 00000000 0000003f 00000000
> 0000003f 00000000
> [  143.914850] 2ef8  00000100 00000000 e904d200 ffffffc0 e904d400 ffffffc0
> e904d600 ffffffc0
> [  143.914874] 2f18  e904d800 ffffffc0 e904da00 ffffffc0 e904dc00 ffffffc0
> e904de00 ffffffc0
> [  143.914897] 2f38  00000000 0001af3b 000003e8 00000001 00000020 00000001
> 0007a120 00000000
> [  143.914903]
> [  143.914903] X27: 0xffffff8008f1d6a0:
> [  143.914927] d6a0  086287a8 ffffff80 08628f14 ffffff80 00000000 00000000
> 00000000 00000000
> [  143.914950] d6c0  00000000 00000000 00000000 00000000 00000000 00000000
> 089f3a40 ffffff80
> [  143.914973] d6e0  00000000 00000000 00000000 00000000 00000000 00000000
> 089f3ad8 ffffff80
> [  143.914996] d700  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.915020] d720  00000001 00000000 08f1d728 ffffff80 08f1d728 ffffff80
> 00000000 00000000
> [  143.915043] d740  00000000 00000000 00000000 00000000 08d31590 ffffff80
> 00000000 00000000
> [  143.915066] d760  00000000 00000000 08f1d760 ffffff80 00000000 00000000
> 08f1d770 ffffff80
> [  143.915090] d780  00000000 00000000 08f1d780 ffffff80 00000000 00000000
> 08f1d790 ffffff80
> [  143.915096]
> [  143.915096] X28: 0xffffffc0b07dff80:
> [  143.915120] ff80  00000000 00000000 00000000 00000000 00000000 00000000
> b07dff98 ffffffc0
> [  143.915143] ffa0  b07dff98 ffffffc0 00000000 00000000 00000000 00000000
> 07f96b73 00000000
> [  143.915171] ffc0  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.915193] ffe0  00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000
> [  143.915217] 0000  00000008 00000000 ffffffff ffffffff bdad5400 ffffffc0
> 00000000 00000000
> [  143.915240] 0020  57ac6e9d 00000000 a1fa5680 0000007f a1fa5cec 0000007f
> a1fa5dec 0000007f
> [  143.915265] 0040  a1fa5e40 0000007f a1fa56b0 0000007f a1fa5678 0000007f
> a1fb2844 0000007f
> [  143.915288] 0060  a1fb2880 0000007f a1fab7f0 0000007f 00000000 00000000
> 00000000 00000000
> [  143.915294]
> [  143.915294] X29: 0xffffffc0b07e3a40:
> [  143.915318] 3a40  08db4000 ffffff80 e64cbc00 ffffffc0 f7f7c4d8 ffffffc0
> 08b9ecc6 ffffff80
> [  143.915342] 3a60  08b9ecc6 ffffff80 08d54000 ffffff80 08d52ed8 ffffff80
> 08f1d720 ffffff80
> [  143.915366] 3a80  b07e0000 ffffffc0 b07e3ac0 ffffffc0 08448b48 ffffff80
> b07e3ac0 ffffffc0
> [  143.915390] 3aa0  08448b74 ffffff80 80000145 00000000 08db4540 ffffff80
> f7f7c4d8 ffffffc0
> [  143.915414] 3ac0  b07e3b00 ffffffc0 08633178 ffffff80 00000000 00000000
> f7f7c4d8 ffffffc0
> [  143.915437] 3ae0  f7be8e00 ffffffc0 da7cca80 ffffffc0 00000000 00000000
> 08d52ed8 ffffff80
> [  143.915461] 3b00  b07e3b50 ffffffc0 0862c3c8 ffffff80 f7be8e00 ffffffc0
> 08f1d850 ffffff80
> [  143.915484] 3b20  08f1d000 ffffff80 08d2d000 ffffff80 00000001 00000000
> 00000005 00000000
> [  143.915486]
> [  143.915493] ---[ end trace 81a571a73657ad00 ]---
> [  143.915498] Call trace:
> [  143.915508] Exception stack(0xffffffc0b07e3900 to 0xffffffc0b07e3a20)
> [  143.915522] 3900: ffffff8008db4540 ffffff8008db4000 ffffffc0b07e3ac0
> ffffff8008448b74
> [  143.915534] 3920: ffffffc0b07e3960 ffffff800868c568 0000000000000004
> ffffffbffe8009e8
> [  143.915546] 3940: ffffffc0b07e3970 ffffff800868c52c ffffff8008f1e150
> ffffffc0f7f91958
> [  143.915558] 3960: ffffffc0b07e3970 ffffff800868c53c ffffffc0b07e3980
> ffffff800868cfa0
> [  143.915570] 3980: ffffffc0b07e39c0 ffffff800868d20c 0000000000000000
> ffffffbffe800920
> [  143.915581] 39a0: ffffffc0e6038d00 ffffffc0e64cbd38 ffffffc0e603c100
> ffffff8008db4530
> [  143.915593] 39c0: ffffffc0e64cbd28 ffffffc0f7f7c4d8 0000000000800f19
> 686aff786b6f6f74
> [  143.915604] 39e0: 7f7f7f7f7f7f7f7f 0000000000000001 0101010101010101
> 0000000000000028
> [  143.915615] 3a00: 0000000000000030 ffff000000000000 0000000000000000
> 0000000000000000
> [  143.915629] [<ffffff8008448b74>] dev_pm_opp_set_regulator+0x64/0x100
> [  143.915646] [<ffffff8008633178>] cpufreq_init+0xb8/0x290
> [  143.915662] [<ffffff800862c3c8>] cpufreq_online+0x26c/0x688
> [  143.915675] [<ffffff800862c834>] cpufreq_cpu_callback+0x50/0x5c
> [  143.915692] [<ffffff80080b560c>] notifier_call_chain+0x48/0x80
> [  143.915705] [<ffffff80080b593c>] __raw_notifier_call_chain+0xc/0x14
> [  143.915720] [<ffffff800809a86c>] __cpu_notify+0x30/0x50
> [  143.915731] [<ffffff800809afa4>] _cpu_up+0x134/0x1e0
> [  143.915744] [<ffffff800809b308>] cpu_up+0x68/0x80
> [  143.915761] [<ffffff800843a8e8>] cpu_subsys_online+0x10/0x18
> [  143.915772] [<ffffff80084354b8>] device_online+0x50/0x94
> [  143.915781] [<ffffff8008435540>] online_store+0x44/0x74
> [  143.915797] [<ffffff80084340ec>] dev_attr_store+0x20/0x28
> [  143.915812] [<ffffff80081f6450>] sysfs_kf_write+0x44/0x4c
> [  143.915826] [<ffffff80081f5810>] kernfs_fop_write+0x10c/0x168
> [  143.915841] [<ffffff8008192550>] __vfs_write+0x28/0xd0
> [  143.915851] [<ffffff80081927ac>] vfs_write+0xac/0x174
> [  143.915861] [<ffffff8008192940>] SyS_write+0x48/0x84
> [  143.915876] [<ffffff8008084530>] el0_svc_naked+0x24/0x28
> [  143.918886] cpu cpu5: Failed to set regulator for cpu5: -16
> 
> 
> -- 
> Finley
> 

-- 
viresh

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2016-07-11 18:39 ` question about cpufreq Viresh Kumar

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