[11/15] tty: hvc: hvc_poll break hv read loop
Michael Ellerman
patch-notifications at ellerman.id.au
Mon Aug 13 21:23:00 AEST 2018
On Mon, 2018-04-30 at 14:55:54 UTC, Nicholas Piggin wrote:
> Avoid looping with the spinlock held while there is read data
> being returned from the hv driver. Instead note if the entire
> size returned by tty_buffer_request_room was read, and request
> another read poll.
>
> This limits the critical section lengths, and provides more
> even service to other consoles in case there is a pathological
> condition.
>
> Signed-off-by: Nicholas Piggin <npiggin at gmail.com>
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/ec97eaad1383ab2500fcf9a07ade60
cheers
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