Re: Question about watchdog

2018-07-09 Thread Ruben Safir
On 07/09/2018 12:17 PM, valdis.kletni...@vt.edu wrote: > Linux doesn't have a "filesystem bus". of course not. i mispoke -- So many immigrant groups have swept through our town that Brooklyn, like Atlantis, reaches mythological proportions in the mind of the world - RI Safir 1998

Re: Question about watchdog

2018-07-09 Thread valdis . kletnieks
On Mon, 09 Jul 2018 09:30:51 -0400, Ruben Safir said: > On 07/08/2018 04:44 PM, valdis.kletni...@vt.edu wrote: > > Error while parsing statement., What is a "filesystem bus" and when does it > > issue a HW interrupt? > You have a hard drive on the system bus and it sends interupts... That's

Re: Question about watchdog

2018-07-09 Thread Ruben Safir
On 07/08/2018 04:44 PM, valdis.kletni...@vt.edu wrote: > Error while parsing statement., What is a "filesystem bus" and when does it > issue a HW interrupt? You have a hard drive on the system bus and it sends interupts... Not to mention other devices like network cards, GPUs, Firewire, express

Re: Question about watchdog

2018-07-08 Thread valdis . kletnieks
On Sun, 08 Jul 2018 15:46:32 -0400, Ruben Safir said: > What are you saying? That is the filesystem bus sends a HW interupt on Error while parsing statement., What is a "filesystem bus" and when does it issue a HW interrupt? pgpAXjJvARBym.pgp Description: PGP signature

Re: Question about watchdog

2018-07-08 Thread Ruben Safir
On Mon, Jul 02, 2018 at 10:29:30AM +0200, Greg KH wrote: > On Mon, Jul 02, 2018 at 08:58:16AM +0100, Justin Skists wrote: > > > > > On 01 July 2018 at 13:44 bing zhu wrote: > > > > > > > > > Dear Sir/Ma'am > > > Thank you for your time ,i'm a student new to linux kernel.at present ,i'd > > >

Re: Question about watchdog

2018-07-03 Thread valdis . kletnieks
On Tue, 03 Jul 2018 10:28:48 +0800, you said: > yes ! but there are days when people have to do a real-time work with no > delay in kernel space ,i think i can feed the dog > a percpu variable "nmi_touch" looks suspicious,thanks! 1) The Linux kernel community convention is t use 'reply all'

Re: Question about watchdog

2018-07-02 Thread valdis . kletnieks
On Sun, 01 Jul 2018 20:44:29 +0800, bing zhu said: > say use kthread_create func ,my question is :how can i make this thread to > run on a cpu and never get switched or scheduled , there is a > while(1).structure in that thread i need it to do work That's almost certainly a result of a poor

Re: Question about watchdog

2018-07-02 Thread Justin Skists
> On 02 July 2018 at 09:29 Greg KH wrote: > > > On Mon, Jul 02, 2018 at 08:58:16AM +0100, Justin Skists wrote: > > > > > On 01 July 2018 at 13:44 bing zhu wrote: > > > > > > > > > Dear Sir/Ma'am > > > Thank you for your time ,i'm a student new to linux kernel.at present ,i'd > > > like to

Re: Question about watchdog

2018-07-02 Thread Greg KH
On Mon, Jul 02, 2018 at 08:58:16AM +0100, Justin Skists wrote: > > > On 01 July 2018 at 13:44 bing zhu wrote: > > > > > > Dear Sir/Ma'am > > Thank you for your time ,i'm a student new to linux kernel.at present ,i'd > > like to create a kernel thread > > say use kthread_create func ,my

Re: Question about watchdog

2018-07-02 Thread Justin Skists
> On 01 July 2018 at 13:44 bing zhu wrote: > > > Dear Sir/Ma'am > Thank you for your time ,i'm a student new to linux kernel.at present ,i'd > like to create a kernel thread > say use kthread_create func ,my question is :how can i make this thread to > run on a cpu and never get switched or

Re: Question about watchdog

2018-07-01 Thread Ruben Safir
On 07/01/2018 08:44 AM, bing zhu wrote: > my question is :how can i make this thread to > run on a cpu and never get switched or scheduled , it is a preemptive multitasking kernel -- So many immigrant groups have swept through our town that Brooklyn, like Atlantis, reaches mythological

Question about watchdog

2018-07-01 Thread bing zhu
Dear Sir/Ma'am Thank you for your time ,i'm a student new to linux kernel.at present ,i'd like to create a kernel thread say use kthread_create func ,my question is :how can i make this thread to run on a cpu and never get switched or scheduled , there is a while(1).structure in that thread i