Re: [PATCH v2] driver core: shut down devices asynchronously

[stuart hayes]

On 9/13/2023 4:05 PM, Stuart Hayes wrote:
> Shut down devices asynchronously, ensuring that each device is shut down
> before its parents.
>
> This can dramatically reduce system shutdown/reboot time on systems that
> have devices that take many seconds to shut down, such as some NVMe drives.
> On one system tested, the shutdown time went from 11 minutes without this
> patch to 55 seconds with the patch.
>
> Signed-off-by: Stuart Hayes <stuart.w.hayes@xxxxxxxxx>
> ---
> v1->v2: rewritten using kernel async code (suggested by Lukas Wunner)
> ---
>
>   drivers/base/base.h   |   2 +
>   drivers/base/core.c   | 135 ++++++++++++++++++++++++------------------
>   include/linux/async.h |   6 ++
>   3 files changed, 87 insertions(+), 56 deletions(-)

Please disregard this patch... I realized this could be done in a simpler way.  I'll send a V3 this week.