Re: [PATCH v4] kcov, usb: only collect coverage from __usb_hcd_giveback_urb in softirq

From: Sebastian Andrzej Siewior
Date: Fri Nov 13 2020 - 08:28:23 EST


On 2020-11-13 13:51:19 [+0100], Andrey Konovalov wrote:
> Hi Sebastian,

Hi Andrey,

> Replaced with what and why?

Linus requested in
https://lkml.kernel.org/r/CAHk-=wht7kAeyR5xEW2ORj7m0hibVxZ3t+2ie8vNHLQfdbN2_g@xxxxxxxxxxxxxx/

that drivers should not change their behaviour on context magic like
in_atomic(), in_interrupt() and so on.
The USB bits were posted in
https://lkml.kernel.org/r/20201019100629.419020859@xxxxxxxxxxxxx

and merged (which is probably the same time as this patch).

I haven't look what this code should do or does but there are HCDs for
which this is never true like the UHCI/OHCI controller for instance.

> Thanks!

Sebastian