linux-kernel - Re: [14/15] tty: hvc: introduce the hv_ops.flush operation for hvc drivers

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Date:   Mon, 13 Aug 2018 21:23:04 +1000 (AEST)
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Nicholas Piggin <npiggin@...il.com>, linuxppc-dev@...ts.ozlabs.org
Cc:     Jiri Slaby <jslaby@...e.com>, linux-kernel@...r.kernel.org,
        Nicholas Piggin <npiggin@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [14/15] tty: hvc: introduce the hv_ops.flush operation for hvc drivers

On Mon, 2018-04-30 at 14:55:57 UTC, Nicholas Piggin wrote:
> Use .flush to wait for drivers to flush their console outside of
> the spinlock, to reduce lock/irq latencies.
> 
> Flush the hvc console driver after each write, which can help
> messages make it out to the console after a crash.
> 
> Signed-off-by: Nicholas Piggin <npiggin@...il.com>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/9f65b81f36e31563c5a5e4df3b3b8b

cheers