Re: [scheduler] BUG: unable to handle kernel paging request at 000000000000ce50

2014-08-01 Thread Christoph Lameter
On Thu, 31 Jul 2014, Lai Jiangshan wrote: > > this_cpu_ptr instead. > > > - struct cpumask *cpus = __get_cpu_var(load_balance_mask); > + struct cpumask *cpus = this_cpu_ptr(load_balance_mask); > > > I think the conversion is wrong. it should be >

Re: [scheduler] BUG: unable to handle kernel paging request at 000000000000ce50

2014-08-01 Thread Christoph Lameter
On Thu, 31 Jul 2014, Fengguang Wu wrote: > Sorry I find that next-20140730 no long show the BUG. So there is no > way to test whether this patch fixed the problem. I guess this means that the bug was unrelated to this patch. Nevertheless I think this patch cleans up two minor issues. -- To

Re: [scheduler] BUG: unable to handle kernel paging request at 000000000000ce50

2014-08-01 Thread Christoph Lameter
On Thu, 31 Jul 2014, Fengguang Wu wrote: Sorry I find that next-20140730 no long show the BUG. So there is no way to test whether this patch fixed the problem. I guess this means that the bug was unrelated to this patch. Nevertheless I think this patch cleans up two minor issues. -- To

Re: [scheduler] BUG: unable to handle kernel paging request at 000000000000ce50

2014-08-01 Thread Christoph Lameter
On Thu, 31 Jul 2014, Lai Jiangshan wrote: this_cpu_ptr instead. - struct cpumask *cpus = __get_cpu_var(load_balance_mask); + struct cpumask *cpus = this_cpu_ptr(load_balance_mask); I think the conversion is wrong. it should be

Re: [scheduler] BUG: unable to handle kernel paging request at 000000000000ce50

2014-07-31 Thread Fengguang Wu
Christoph, On Wed, Jul 30, 2014 at 09:55:29AM -0500, Christoph Lameter wrote: > On Wed, 30 Jul 2014, Fengguang Wu wrote: > > > FYI, this commit seems to convert some kernel boot hang bug into > > different BUG messages. > > Hmmm. Still a bit confused as to why these messages occur.. Does this >

Re: [scheduler] BUG: unable to handle kernel paging request at 000000000000ce50

2014-07-31 Thread Lai Jiangshan
On 07/30/2014 10:55 PM, Christoph Lameter wrote: > On Wed, 30 Jul 2014, Fengguang Wu wrote: > >> FYI, this commit seems to convert some kernel boot hang bug into >> different BUG messages. > > Hmmm. Still a bit confused as to why these messages occur.. Does this > patch do any good? The vmstat

Re: [scheduler] BUG: unable to handle kernel paging request at 000000000000ce50

2014-07-31 Thread Lai Jiangshan
On 07/30/2014 09:56 PM, Fengguang Wu wrote: > Hi Christoph, > > FYI, this commit seems to convert some kernel boot hang bug into > different BUG messages. > > git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu.git > for-3.17-consistent-ops > commit 9b0c63851edaf54e909475fe2a0946f57810e98a

Re: [scheduler] BUG: unable to handle kernel paging request at 000000000000ce50

2014-07-31 Thread Lai Jiangshan
On 07/30/2014 09:56 PM, Fengguang Wu wrote: Hi Christoph, FYI, this commit seems to convert some kernel boot hang bug into different BUG messages. git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu.git for-3.17-consistent-ops commit 9b0c63851edaf54e909475fe2a0946f57810e98a Author:

Re: [scheduler] BUG: unable to handle kernel paging request at 000000000000ce50

2014-07-31 Thread Lai Jiangshan
On 07/30/2014 10:55 PM, Christoph Lameter wrote: On Wed, 30 Jul 2014, Fengguang Wu wrote: FYI, this commit seems to convert some kernel boot hang bug into different BUG messages. Hmmm. Still a bit confused as to why these messages occur.. Does this patch do any good? The vmstat bug can't

Re: [scheduler] BUG: unable to handle kernel paging request at 000000000000ce50

2014-07-31 Thread Fengguang Wu
Christoph, On Wed, Jul 30, 2014 at 09:55:29AM -0500, Christoph Lameter wrote: On Wed, 30 Jul 2014, Fengguang Wu wrote: FYI, this commit seems to convert some kernel boot hang bug into different BUG messages. Hmmm. Still a bit confused as to why these messages occur.. Does this patch do

Re: [scheduler] BUG: unable to handle kernel paging request at 000000000000ce50

2014-07-30 Thread Christoph Lameter
On Wed, 30 Jul 2014, Fengguang Wu wrote: > FYI, this commit seems to convert some kernel boot hang bug into > different BUG messages. Hmmm. Still a bit confused as to why these messages occur.. Does this patch do any good? Subject: vmstat ondemand: Fix online/offline races Do not allow

Re: [scheduler] BUG: unable to handle kernel paging request at 000000000000ce50

2014-07-30 Thread Christoph Lameter
On Wed, 30 Jul 2014, Fengguang Wu wrote: FYI, this commit seems to convert some kernel boot hang bug into different BUG messages. Hmmm. Still a bit confused as to why these messages occur.. Does this patch do any good? Subject: vmstat ondemand: Fix online/offline races Do not allow