Re: [ARM64] Printing IRQ stack usage information

2018-11-20 Thread valdis . kletnieks
On Tue, 20 Nov 2018 18:21:33 +0530, Pintu Agarwal said: > + sp = current_stack_pointer; > + if (on_irq_stack(sp, cpu)) { > + stack_start = (unsigned long)per_cpu(irq_stack, cpu); > + last_usage = per_cpu(irq_stack_usage, cpu); > + curr_usage = sp - stack_start; > +

question: frag_max_size not checked in ip_finish_output

2018-11-20 Thread Wenxin Wang
Dear developers, It seems that with defragmentation enabled, `ip_finish_output` doesn't honor `IPCB(skb)->frag_max_size`, while `ip6_finish_output` checks `IP6CB(skb)->frag_max_size`. (Sorry for the reposting, I found that I need to subscribe to the mailing list, and I also add results of my

Re: [ARM64] Printing IRQ stack usage information

2018-11-20 Thread Pintu Agarwal
On Sat, Nov 17, 2018 at 6:36 PM Pintu Agarwal wrote: > > On Sat, Nov 17, 2018 at 12:02 AM wrote: > > > > > But my concern is that if I dump it from irq handler, I will get > > > information only for the current cpu. > > > How do I store and get the information for all the cpu from the boot time

pwm_bl add framebuffer from fbcon

2018-11-20 Thread Christian N
Hi All First at all I introduce my usecase -My board based on ARM (OMPA4) can get a custom splash screen on booting using fbcon. -By Device Tree I can configure screen backlight with desired level. i'm trying to turn on backlight when splash screen is displayed and not before to avoid "white

Re: deferred pages

2018-11-20 Thread Cindy-Sue Causey
On 11/1/18, Mulyadi Santosa wrote: > On Mon, Oct 29, 2018 at 1:51 AM Damian Tometzki > wrote: > >> On So, 28. Okt 17:33, Damian Tometzki wrote: >> Hello together, >> >> can anyone me short explain what is deferred page(s) ? >> >> Many thanks >> >> Best regards >> Damian >> > > Hm, did you mean

Re: deferred pages

2018-11-20 Thread valdis . kletnieks
On Tue, 20 Nov 2018 10:16:41 -0500, Cindy-Sue Causey said: > First reference is near the top under "AIX 4.3.2+ Deferred Paging > #2) AIX 5L Differences Guide Version 5.3 Edition I feel sorry for anybody still running either of these AIX versions (4.3.2 is late 1998, 5.3 is from 2005). Word of

question: frag_max_size not checked in ip_finish_output

2018-11-20 Thread Wenxin Wang
Dear developers, I'm trying to understand the different behavior between `ip_finish_output` and `ip6_finish_output`, when deciding whether to do fragmentation or not. `ip_finish_output` calls `ip_fragment` when `skb->len` exceeds the destination mtu; In addition to this mtu check,