Re: [PATCH v3 0/6] alloc_tag: introduce IOCTL-based filtering for MAP

[Andrew Morton]

On Fri,  5 Jun 2026 23:36:45 +0000 Abhishek Bapat <abhishekbapat@xxxxxxxxxx> wrote:

> Currently, memory allocation profiling data is primarily exposed through
> /proc/allocinfo. While useful for manual inspection, this text-based
> interface poses challenges for production monitoring and large-scale
> analysis:
> 
> 1. Userspace must parse large amounts of text to extract specific
> fields.
> 2. To find specific tags, userspace must read the entire dataset,
> requiring many context switches and high data copying.
> 3. The kernel currently aggregates per-CPU counters for every allocation
> size, even those the user intends to filter out immediately.
> 
> This series introduces a new IOCTL-based binary interface for allocinfo
> that supports kernel-side filtering. By allowing the user to specify a
> filter mask, we significantly reduce the work performed in-kernel and
> the amount of data transferred to userspace.

Thanks.  AI review found several things - you'll want to address at
least the first few.

	https://sashiko.dev/#/patchset/cover.1780701922.git.abhishekbapat@xxxxxxxxxx