From: Prarit Bhargava <prarit@redhat.com>
To: Viresh Kumar <viresh.kumar@linaro.org>
Cc: "Robert Schöne" <robert.schoene@tu-dresden.de>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
"Lists linaro-kernel" <linaro-kernel@lists.linaro.org>,
"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
"Saravana Kannan" <skannan@codeaurora.org>
Subject: Re: [PATCH 1/2] cpufreq: serialize calls to __cpufreq_governor()
Date: Wed, 08 Oct 2014 08:46:27 -0400 [thread overview]
Message-ID: <54353223.7080704@redhat.com> (raw)
In-Reply-To: <CAKohpo=rEYgH+PSmkP8X8J0u69Kyp1W7JzBFOiOsiCOFSdyAiw@mail.gmail.com>
On 10/08/2014 03:04 AM, Viresh Kumar wrote:
> On 25 September 2014 11:37, Robert Schöne <robert.schoene@tu-dresden.de> wrote:
>> We had some iterations of patches, but the only solution that works for
>> me is the patch with the coarse-grained lock that I sent at Mon, 08 Sep
>> 2014 10:16:48 CEST [1]
>> Viresh is pretty occupied lately, but he told me that he might do the
>> tests himself when the current period of busyness is over as he is
>> supplied with a test system. I'm not sure about his current status (busy
>> or testing).
>
> Hi Robert/Prarit,
>
> The last state of my branch: cpufreq/governor-fixes you tested had
> few bugs in it and so you weren't able to even tests things up.
>
> I couldn't manage to test my patches on a multi-cluster system
> (couldn't get it up yet :( ), but was able to do that on a dual-core
> ARM-cortexA15 board. And could simply find the bugs there.
>
> I have updated my branch with the changes now and it would be
> great if you can confirm if they fix your issues or not.
>
> git://git.linaro.org/people/viresh.kumar/linux.git cpufreq/governor-fixes
Hey Viresh, this is on my plate for today. It does look like the panic I sent
you yesterday in email does occur when your patches are put into the latest
upstream kernel :(.
I'm going to debug shortly ... for anyone interested the panic is:
[ 30.402052] Modules linked in: rfkill nfsd auth_rpcgss nfs_acl lockd sunrpc
e1000e x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm
crct10dif_pclmul iTCO_wdt iTCO_vendor_support i2c_i801 ptp crc32_pclmul
crc32c_intel ghash_clmulni_intel sb_edac pps_core aesni_intel lrw gf128mul
glue_helper ablk_helper cryptd pcspkr lpc_ich edac_core shpchp mfd_core wmi
ipmi_si ipmi_msghandler acpi_pad acpi_cpufreq xfs libcrc32c sd_mod sr_mod cdrom
crc_t10dif crct10dif_common mgag200 syscopyarea sysfillrect sysimgblt
i2c_algo_bit drm_kms_helper ttm drm ahci libahci libata usb_storage i2c_core
dm_mirror dm_region_hash dm_log dm_mod
[ 30.464642] CPU: 106 PID: 2074 Comm: cpupower Not tainted 3.17.0+ #2
[ 30.471743] Hardware name: Intel Corporation BRICKLAND/BRICKLAND, BIOS
BIVTSDP1.86B.0049.R00.1403081207 03/08/2014
[ 30.483308] task: ffff88104fafec80 ti: ffff88104f914000 task.ti: ffff88104f914000
[ 30.491669] RIP: 0010:[<ffffffff810a8a05>] [<ffffffff810a8a05>]
update_blocked_averages+0x205/0x740
[ 30.501897] RSP: 0018:ffff88205f203df8 EFLAGS: 00010002
[ 30.507831] RAX: 000000000000006a RBX: ffff882050181e00 RCX: 2030203020302030
[ 30.515803] RDX: 2030203020302030 RSI: 0000000000000000 RDI: 0000000000000000
[ 30.523777] RBP: ffff88205f203e60 R08: ffffffffffffffff R09: ffff88205f214800
[ 30.531750] R10: 0000000000000000 R11: 000000000000b4d1 R12: ffff88205078fc00
[ 30.539721] R13: ffff882043e07c00 R14: ffff88205f214780 R15: ffff88205f215028
[ 30.547694] FS: 00007f1bf54a4740(0000) GS:ffff88205f200000(0000)
knlGS:0000000000000000
[ 30.556733] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 30.563154] CR2: 00007f1bf4a01900 CR3: 0000002048160000 CR4: 00000000001407e0
[ 30.571127] Stack:
[ 30.573372] 00002362000f4240 000000000000013b 0000000000000066 ffff882043e07c00
[ 30.581677] ffff88205f214800 0000000000000246 ffff88205078fcc0 0000000011e9d93e
[ 30.589988] 00000000fffcc75f ffff88205f214780 0000000000014780 0000000000000001
[ 30.598294] Call Trace:
[ 30.601025] <IRQ>
[ 30.603173] [<ffffffff810af9b4>] rebalance_domains+0x54/0x290
[ 30.609916] [<ffffffff810afc34>] run_rebalance_domains+0x44/0x1d0
[ 30.616827] [<ffffffff810797a5>] __do_softirq+0xf5/0x2e0
[ 30.622861] [<ffffffff81079c6d>] irq_exit+0x10d/0x120
[ 30.628608] [<ffffffff81656155>] smp_apic_timer_interrupt+0x45/0x60
[ 30.635710] [<ffffffff8165425d>] apic_timer_interrupt+0x6d/0x80
[ 30.642418] <EOI>
[ 30.644566] [<ffffffff813043e2>] ? number.isra.2+0x62/0x360
[ 30.651121] [<ffffffff813046a3>] ? number.isra.2+0x323/0x360
[ 30.657545] [<ffffffff81306755>] vsnprintf+0x3e5/0x5c0
[ 30.663385] [<ffffffff81306ab6>] sprintf+0x56/0x80
[ 30.668841] [<ffffffff814e42be>] show_available_freqs.isra.1+0xae/0xc0
[ 30.676235] [<ffffffff814e42e7>] scaling_available_frequencies_show+0x17/0x20
[ 30.684307] [<ffffffff814e04ac>] show+0x5c/0x90
[ 30.689472] [<ffffffff8125df6c>] sysfs_kf_seq_show+0xcc/0x1e0
[ 30.695992] [<ffffffff8125c663>] kernfs_seq_show+0x23/0x30
[ 30.702224] [<ffffffff8120970a>] seq_read+0xfa/0x3a0
[ 30.707870] [<ffffffff8125ced5>] kernfs_fop_read+0xf5/0x160
[ 30.714198] [<ffffffff811e5b28>] vfs_read+0x98/0x170
[ 30.719844] [<ffffffff811e6805>] SyS_read+0x55/0xd0
[ 30.725394] [<ffffffff81653369>] system_call_fastpath+0x16/0x1b
[ 30.732104] Code: c7 4c 8d a0 40 ff ff ff 0f 84 c0 00 00 00 49 8b 94 24 d0 00
00 00 49 63 86 70 09 00 00 48 8b 8a a8 00 00 00 48 8b 92 b0 00 00 00 <48> 8b 1c
c1 4c 8b 2c c2 0f 1f 44 00 00 be 01 00 00 00 4c 89 ef
[ 30.753924] RIP [<ffffffff810a8a05>] update_blocked_averages+0x205/0x740
[ 30.761523] RSP <ffff88205f203df8>
[ 30.765421] ---[ end trace c3a68cab33090779 ]---
[ 30.770579] Kernel panic - not syncing: Fatal exception in interrupt
[ 30.773853] general protection fault: 0000 [#2] SMP
[ 30.773900] Modules linked in: rfkill nfsd auth_rpcgss nfs_acl lockd sunrpc
e1000e x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm
crct10dif_pclmul iTCO_wdt iTCO_vendor_support i2c_i801 ptp crc32_pclmul
crc32c_intel ghash_clmulni_intel sb_edac pps_core aesni_intel lrw gf128mul
glue_helper ablk_helper cryptd pcspkr lpc_ich edac_core shpchp mfd_core wmi
ipmi_si ipmi_msghandler acpi_pad acpi_cpufreq xfs libcrc32c sd_mod sr_mod cdrom
crc_t10dif crct10dif_common mgag200 syscopyarea sysfillrect sysimgblt
i2c_algo_bit drm_kms_helper ttm drm ahci libahci libata usb_storage i2c_core
dm_mirror dm_region_hash dm_log dm_mod
[ 30.773905] CPU: 32 PID: 0 Comm: swapper/32 Tainted: G D 3.17.0+ #2
[ 30.773907] Hardware name: Intel Corporation BRICKLAND/BRICKLAND, BIOS
BIVTSDP1.86B.0049.R00.1403081207 03/08/2014
[ 30.773909] task: ffff882053e93640 ti: ffff880853610000 task.ti: ffff880853610000
[ 30.773923] RIP: 0010:[<ffffffff810a8a05>] [<ffffffff810a8a05>]
update_blocked_averages+0x205/0x740
[ 30.773925] RSP: 0018:ffff88185f843df8 EFLAGS: 00010002
[ 30.773926] RAX: 0000000000000020 RBX: ffff88184d6a4a80 RCX: 2030203020302030
[ 30.773928] RDX: 2030203020302030 RSI: 0000000000000000 RDI: ffff88185173f4c0
[ 30.773929] RBP: ffff88185f843e60 R08: ffff88185173f4c0 R09: ffff88185f854800
[ 30.773930] R10: 0000000000000000 R11: 000000000000be09 R12: ffff88185081f400
[ 30.773931] R13: ffff88185173f400 R14: ffff88185f854780 R15: ffff88185f855028
[ 30.773934] FS: 0000000000000000(0000) GS:ffff88185f840000(0000)
knlGS:0000000000000000
[ 30.773935] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 30.773937] CR2: 00007f5090003308 CR3: 000000000197c000 CR4: 00000000001407e0
[ 30.773938] Stack:
[ 30.773942] 0000000154104f38 0000000000000389 0000000000000000 ffff88185173f400
[ 30.773945] ffff88185f854800 0000000000000246 ffff88185081f4c0 a8dd852b1b50c0c9
[ 30.773947] 00000000fffcc8d8 ffff88185f854780 0000000000014780 0000000000000000
[ 30.773948] Call Trace:
[ 30.773952] <IRQ>
[ 30.773957] [<ffffffff810af9b4>] rebalance_domains+0x54/0x290
[ 30.773967] [<ffffffff810d7066>] ? call_timer_fn+0x36/0x100
[ 30.773971] [<ffffffff810afc34>] run_rebalance_domains+0x44/0x1d0
[ 30.773979] [<ffffffff810797a5>] __do_softirq+0xf5/0x2e0
[ 30.773982] [<ffffffff81079c6d>] irq_exit+0x10d/0x120
[ 30.773991] [<ffffffff81656155>] smp_apic_timer_interrupt+0x45/0x60
[ 30.773994] [<ffffffff8165425d>] apic_timer_interrupt+0x6d/0x80
[ 30.773996] <EOI>
[ 30.774005] [<ffffffff814e8ac0>] ? cpuidle_enter_state+0x70/0x170
[ 30.774008] [<ffffffff814e8c77>] cpuidle_enter+0x17/0x20
[ 30.774014] [<ffffffff810b5d5d>] cpu_startup_entry+0x37d/0x3a0
[ 30.774021] [<ffffffff81048550>] start_secondary+0x210/0x2d0
[ 30.774045] Code: c7 4c 8d a0 40 ff ff ff 0f 84 c0 00 00 00 49 8b 94 24 d0 00
00 00 49 63 86 70 09 00 00 48 8b 8a a8 00 00 00 48 8b 92 b0 00 00 00 <48> 8b 1c
c1 4c 8b 2c c2 0f 1f 44 00 00 be 01 00 00 00 4c 89 ef
[ 30.774049] RIP [<ffffffff810a8a05>] update_blocked_averages+0x205/0x740
[ 30.774050] RSP <ffff88185f843df8>
[ 30.774054] ---[ end trace c3a68cab3309077a ]---
[ 32.189638] Shutting down cpus with NMI
[ 32.193941] Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range:
0xffffffff80000000-0xffffffff9fffffff)
[ 32.205301] drm_kms_helper: panic occurred, switching back to text console
[ 32.213005] ---[ end Kernel panic - not syncing: Fatal exception in interrup
P.
>
> --
> viresh
>
next prev parent reply other threads:[~2014-10-08 12:46 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-08 7:04 [PATCH 1/2] cpufreq: serialize calls to __cpufreq_governor() Viresh Kumar
2014-10-08 12:46 ` Prarit Bhargava [this message]
2014-10-10 9:04 ` Viresh Kumar
2014-10-10 10:41 ` Robert Schöne
2014-10-10 11:14 ` Viresh Kumar
2014-10-10 11:21 ` Prarit Bhargava
2014-10-10 11:30 ` Viresh Kumar
2014-10-10 11:38 ` Prarit Bhargava
2014-10-10 11:46 ` Viresh Kumar
2014-10-10 11:48 ` Prarit Bhargava
2014-10-10 12:01 ` Robert Schöne
2014-10-10 12:39 ` Viresh Kumar
2014-10-10 13:04 ` Robert Schöne
2014-10-10 13:23 ` Robert Schöne
2014-10-10 13:52 ` Viresh Kumar
2014-10-10 14:05 ` Robert Schöne
2014-10-14 6:58 ` Viresh Kumar
2014-10-14 11:42 ` Prarit Bhargava
2014-10-14 17:12 ` Prarit Bhargava
2014-10-16 10:58 ` Viresh Kumar
2014-10-17 12:12 ` Prarit Bhargava
2014-10-16 10:57 ` Viresh Kumar
2014-10-17 12:09 ` Prarit Bhargava
-- strict thread matches above, loose matches on Subject: below --
2014-10-10 13:55 Prarit Bhargava
2014-10-10 13:58 ` Viresh Kumar
2014-10-10 13:40 Prarit Bhargava
2014-10-10 13:42 ` Robert Schöne
2014-09-09 4:16 Viresh Kumar
2014-09-09 7:29 ` Robert Schöne
2014-09-09 7:35 ` Viresh Kumar
[not found] ` <540EEA95.8030208@redhat.com>
2014-09-09 14:45 ` Viresh Kumar
2014-09-24 23:46 ` Rafael J. Wysocki
2014-09-25 6:07 ` Robert Schöne
2014-09-29 9:50 ` Viresh Kumar
2014-09-29 11:29 ` Prarit Bhargava
2014-09-29 11:38 ` Viresh Kumar
2014-09-29 11:50 ` Prarit Bhargava
2014-09-29 11:55 ` Viresh Kumar
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