Thread (4 messages) 4 messages, 2 authors, 2026-01-10

Re: [v3 PATCH 0/1] tracing: Add bitmask-list option for human-readable bitmask display

From: Steven Rostedt <rostedt@goodmis.org>
Date: 2026-01-10 21:10:31
Also in: linux-doc, lkml

On Sat, 10 Jan 2026 16:06:02 -0500
Aaron Tomlin [off-list ref] wrote:
On Fri, Dec 26, 2025 at 11:07:23AM -0500, Aaron Tomlin wrote:
quoted
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?
You can always check the status of a patch from patchwork. This one is here:

  https://patchwork.kernel.org/project/linux-trace-kernel/patch/20251226160724.2246493-2-atomlin@atomlin.com/

The states are:

  New		- I haven't looked at it.
  Under Review	- I have it in a local queue (can still be rejected)
  Queued	- It's moved to linux-next
  Accepted	- It's in Linus's tree

Other states I will most likely have a response to.

This one is currently in the "Under Review" state. It also means I haven't
found anything wrong with it. It just hasn't gone through all my tests.

-- Steve

Kind regards,
  
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help