Re: [PATCH 2/3] Makefile: Add support for legacy kernels

[Clark Williams <clrkwllms@kernel.org>]

On Thu, Oct 02, 2025 at 04:55:14PM -0400, Derek Barbosa wrote:
> In the sched_debug backend code, we conditionally parse the running
> tasks block of the sched_debug file to support the older task format (as
> denoted by OLD_TASK_FORMAT).
> 
> This task format is only present on legacy 3.X kernels. However, on said
> legacy kernels, the current Makefile directives and #if macros in the
> stalld.c code do not fully support compilation of stalld.
> 
> Add a LEGACY check to the makefile, which parses `uname -r` output for
> the major kernel version, and adds a LEGACY compilation flag to the
> CFLAGS. Use the compilation flag to default to sched_debug_backend in
> the stalld.c file to avoid missing references to the queue_track code.
> 
> Also, disable Intel CET -fcf-protection and BPF support, remove
> annocheck targets, and default to the c99 compiler (if present).
> 
> Signed-off-by: Derek Barbosa <debarbos@redhat.com>
Signed-off-by: Clark Williams <williams@redhat.com>

Thanks for the fixes!
Clark

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