Linux Virtualization - Nov 2019 - [PATCH v3 2/3] usb, kcov: collect coverage from hub_event

On Tue, Oct 29, 2019 at 05:32:28PM +0100, Andrey Konovalov
wrote:
> This patch adds kcov_remote_start()/kcov_remote_stop() annotations to the
> hub_event() function, which is responsible for processing events on USB
> buses, in particular events that happen during USB device enumeration.
> Since hub_event() is run in a global background kernel thread (see
> Documentation/dev-tools/kcov.rst for details), each USB bus gets a unique
> global handle from the USB subsystem kcov handle range. As the result kcov
> can now be used to collect coverage from events that happen on a
> particular USB bus.
> 
> Signed-off-by: Andrey Konovalov <andreyknvl at google.com>
> ---
>  drivers/usb/core/hub.c | 5 +++++
>  1 file changed, 5 insertions(+)
Reviewed-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>