Hi Jay,

On Tue, Jan 25, 2022 at 10:33:45AM +0800, Jiankang Chen wrote:

Hi Mathieu

在 2022/1/25 04:08, Mathieu Poirier 写道:

...

On Mon, 24 Jan 2022 at 04:00, Jay Chen jkchen@linux.alibaba.com wrote:

...

Currently, there are 130 etr and etf on our machine, but the current coresight tmc driver uses misc_register to register the device, which leads to the error that the device number is not enough.

coresight-tmc: probe of xxxxx failed with error -16

This patch changes the device registration method to cdev's dynamic registration method to solve the problem of insufficient device numbers.

This patch is still not labelled properly and as such being dropped.

Hello, about the label of this patch, what kind of patch should I add?

You could use "git format" command with option "-v" to add the version number, e.g. if you are committing patch version 4, so you can generate patch like:

$ git format-patch HEAD~1 -v4

Or if you want to generate patch for a specific commit:

$ git format-patch -1 patch_commit -v4

Every time when you generate a new version's patch, you could increment the version number with option "-v4", "-v5", and so on.

P.s. I strongly suggest Marc Zyngier's great talk for how to upstream kernel patch in a good way: https://events19.linuxfoundation.org/wp-content/uploads/2017/12/Getting-Your...

Thanks, Leo