Re: [PATCH] mm/cma_debug: show complete cma name in debugfs directories

From: Andrew Morton
Date: Wed Aug 10 2022 - 17:31:14 EST


On Wed, 10 Aug 2022 22:58:05 +0530 Charan Teja Kalla <quic_charante@xxxxxxxxxxx> wrote:

> Currently only 12 characters of the cma name is being used as the debug
> directories where as the cma name can be of length CMA_MAX_NAME(=64)
> characters. One side problem with this is having 2 cma's with first
> common 12 characters would end up in trying to create directories with
> same name and fails with -EEXIST thus can limit cma debug functionality.

I guess so. There might be back-compatibility issues, but it's
debugfs...


> Also drop 'cma-' prefix for the cma debug directories as they are
> clearly evident that they are for cma debug through creating them in
> /sys/kernel/debug/cma/ path.

I guess so. But please run `grep -r cma- Documentation'