Re: [v3 PATCH 0/1] tracing: Add bitmask-list option for human-readable bitmask display
From: Aaron Tomlin
Date: Sat Jan 10 2026 - 16:06:11 EST
On Fri, Dec 26, 2025 at 11:07:23AM -0500, Aaron Tomlin wrote:
> Hi Steve,
>
> This patch adds support for displaying bitmasks in human-readable list
> format (e.g., 0,2-5,7) in addition to the default hexadecimal bitmap
> representation. This is particularly useful when tracing CPU masks and
> other large bitmasks where individual bit positions are more meaningful
> than their hexadecimal encoding.
>
> When the "bitmask-list" option is enabled, the printk "%*pbl" format
> specifier is used to render bitmasks as comma-separated ranges, making
> trace output easier to interpret for complex CPU configurations and
> large bitmask values.
>
> This iteration incorporates the use of iter->tmp_seq to ensure the
> implementation is robust, instance-aware, and free from buffer contention
> or duplication issues.
>
> Please let me know your thoughts.
Hi Steve,
I would like to ask if this iteration is suitable for inclusion, or should
any further refinements be made?
Kind regards,
--
Aaron Tomlin
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