On 13.02.2024 06:45:04, Dave Taht wrote: > while I am delighted to see this, what is the observed benefit? Let's add Markus (the author of this patch) and the linux-can Mailing list on Cc. I haven't implemented this feature, but Markus has. IIRC BQL is mandatory for xmit_more(). And xmit_more() is used to batch more then one transfer from the host to the CAN controller. This brings a performance improvement on for tcan4x5x, which is connected via SPI. And SPI is a quite slow bus with lots of overhead (at least on Linux). Marc -- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung Nürnberg | Phone: +49-5121-206917-129 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-9 |
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