Subj : [$] SFrame-based stack unwinding for the kernel
To   : All
From : LWN.net
Date : Fri Jul 11 2025 14:45:06

[$] SFrame-based stack unwinding for the kernel

Date:
Fri, 11 Jul 2025 13:42:08 +0000

Description:
The kernel's perf
events subsystem can produce high-quality profiles, with full
function-call chains, of resource usage
within the kernel itself.  Developers, however, often would like to see
profiles of the whole system in one integrated report with, for example,
call-stack information that crosses the boundary between the kernel and
user space.  Support for unwinding user-space call stacks in the perf
events subsystem is currently inefficient at best.  A long-running effort
to provide reliable, user-space call-stack unwinding within the kernel,
which will improve that situation considerably, appears to be reaching
fruition.

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Link to news story:
https://lwn.net/Articles/1029189/


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