Re: [PATCH] mm/slab: Increase width of first /proc/slabinfo column

Matthew Wilcox
2019-02-01T02:43:18Z

On Fri, Feb 01, 2019 at 11:42:42AM +1100, Tobin C. Harding wrote:
> Currently when displaying /proc/slabinfo if any cache names are too long
> then the output columns are not aligned. We could do something fancy to
> get the maximum length of any cache name in the system or we could just
> increase the hardcoded width. Currently it is 17 characters. Monitors
> are wide these days so lets just increase it to 30 characters.

I had a proposal some time ago to turn the slab name from being kmalloced
to being an inline 16 bytes (with some fun hacks for cgroups). I think
that's a better approach than permitting such long names. For example,
ext4_allocation_context could be shortened to ext4_alloc_ctx without
losing any expressivity.

Let me know if you can't find that and I'll try to dig it up.