Hi Linus, Em Tue, 17 Jul 2018 10:09:28 -0700 Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> escreveu: > On Tue, Jul 17, 2018 at 4:58 AM Hanna Hawa <hannah@xxxxxxxxxxx> wrote: > > > > After some debug/bisect/diff, found that patch "softirq: Let ksoftirqd > > do its job" is problematic patch. > > Ok, this thread died down without any resolution. > > >- Using v4.14.0 (including softirq patch) and the additional fix > > proposed by Linus - no timeout issue. > > Are you talking about the patch that made HI_SOFTIRQ and > TASKLET_SOFTIRQ special, and had this: > > #define SOFTIRQ_NOW_MASK ((1 << HI_SOFTIRQ) | (1 << TASKLET_SOFTIRQ)) > > in it? > > I think I'll just commit the damn thing. It's hacky, but it's simple, > and it never got applied because we had smarter suggestions. But the > smarter suggestions never ended up being applied either, so.. Yeah, IMHO the best would be to apply your patch[1], c/c stable up to 4.9. Nothing prevents applying a better/smarter solution once we have it. From my side, I can keep testing whatever smart suggestions people propose. Yet, better to have one fix on our hand than two fixes flying around. [1] e. g. https://git.linuxtv.org/mchehab/experimental.git/commit/?h=v4.15%2bmedia%2bdwc2&id=ccf833fd4a5b99c3d3cf2c09c065670f74a230a7 Regards, Mauro -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
