Re: [PATCH v2] drivers: spi: spi.c: Convert statistics to per-cpu u64_stats_t

[Mark Brown <broonie@xxxxxxxxxx>]

On Tue, 24 May 2022 11:18:08 +0200, David Jander wrote:
> This change gives a dramatic performance improvement in the hot path,
> since many costly spin_lock_irqsave() calls can be avoided.
> 
> On an i.MX8MM system with a MCP2518FD CAN controller connected via SPI,
> the time the driver takes to handle interrupts, or in other words the time
> the IRQ line of the CAN controller stays low is mainly dominated by the
> time it takes to do 3 relatively short sync SPI transfers. The effect of
> this patch is a reduction of this time from 136us down to only 98us.
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next

Thanks!

[1/1] drivers: spi: spi.c: Convert statistics to per-cpu u64_stats_t
      commit: 6598b91b5ac32bc756d7c3000a31f775d4ead1c4

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark