Hi Viresh,
On Wed, Jan 30, 2013 at 10:22:37AM +0530, Viresh Kumar wrote:
Hi Fabio,
Sorry for waking up very late :)
The reason why i am starting this thread again is due to problem reported by Joseph, with latest linux-next/master branch (which contains few big patches from me :) ):
Reboot is giving following to him:
- Will now halt
[ 193.756068] Disabling non-boot CPUs... [ 193.760088] BUG: scheduling while atomic: halt/780/0x00000002 [ 193.765845] Modules linked in: brcmfmac brcmutil [ 193.770613] [<c0014990>] (unwind_backtrace+0x0/0xf8) from [<c0049510>] (__schedule_bug+0x44/0x5c) [ 193.779548] [<c0049510>] (__schedule_bug+0x44/0x5c) from [<c04fa320>] (__schedule+0x688/0x6ec) [ 193.788206] [<c04fa320>] (__schedule+0x688/0x6ec) from [<c04fa75c>] (schedule_preempt_disabled+0x24/0x34) [ 193.797811] [<c04fa75c>] (schedule_preempt_disabled+0x24/0x34) from [<c04f916c>] (__mutex_lock_slowpath+0x170/0x34c) [ 193.808367] [<c04f916c>] (__mutex_lock_slowpath+0x170/0x34c) from [<c04f9354>] (mutex_lock+0xc/0x24) [ 193.817554] [<c04f9354>] (mutex_lock+0xc/0x24) from [<c04f1cdc>] (unregister_cpu_notifier+0xc/0x24) [ 193.826640] [<c04f1cdc>] (unregister_cpu_notifier+0xc/0x24) from [<c033a8a4>] (cpufreq_governor_dbs+0x118/0x614) [ 193.836866] [<c033a8a4>] (cpufreq_governor_dbs+0x118/0x614) from [<c033747c>] (__cpufreq_governor+0x58/0xc0) [ 193.846737] [<c033747c>] (__cpufreq_governor+0x58/0xc0) from [<c0339104>] (__cpufreq_remove_dev.clone.7+0x58/0x320) [ 193.857207] [<c0339104>] (__cpufreq_remove_dev.clone.7+0x58/0x320) from [<c04f7958>] (cpufreq_cpu_callback+0x8c/0x9c) [ 193.867850] [<c04f7958>] (cpufreq_cpu_callback+0x8c/0x9c) from [<c0044f4c>] (notifier_call_chain+0x44/0x84) [ 193.877623] [<c0044f4c>] (notifier_call_chain+0x44/0x84) from [<c0026e24>] (__cpu_notify+0x2c/0x48) [ 193.886704] [<c0026e24>] (__cpu_notify+0x2c/0x48) from [<c04f1b08>] (_cpu_down+0xb0/0x23c) [ 193.895004] [<c04f1b08>] (_cpu_down+0xb0/0x23c) from [<c00270ec>] (disable_nonboot_cpus+0x68/0x104) [ 193.904089] [<c00270ec>] (disable_nonboot_cpus+0x68/0x104) from [<c0034fbc>] (kernel_power_off+0x24/0x48) [ 193.913688] [<c0034fbc>] (kernel_power_off+0x24/0x48) from [<c0035810>] (sys_reboot+0x104/0x1e0) [ 193.922517] [<c0035810>] (sys_reboot+0x104/0x1e0) from [<c000e520>] (ret_fast_syscall+0x0/0x30)
And the crash log show this patch of yours somewhere :)
It looks like the two patches clashed togher quite badly... :-)
On Wed, Jan 30, 2013 at 10:22:37AM +0530, Viresh Kumar wrote: [...]
First question: Is this patch still required? Because following patch from me is sending a STOP/START to governors on cpu hot-[un]plug ?
commit dbcb63407c095af73f3464767e00902cdee55e8b Author: Viresh Kumar viresh.kumar@linaro.org Date: Sat Jan 12 05:14:39 2013 +0000
cpufreq: Notify governors when cpus are hot-[un]pluggedFor me, the answer is NO.
I confirm that your patch handles correctly the problem solved by this one so I agree on dropping mine.
Rafael, this is screwing up a bit on bisection for cpu hotplug problems so I'm sending a v7 with the cleanup on first patch and this one dropped if you are ok with rebasing your pm-cpufreq-next. Let me know if you prefer me to just send a revert + cleanup patch instead.
Thanks, Fabio