Re: [PATCH v4 0/2] tracing: Move non-trace_printk prototypes into trace_controls.h

[Jani Nikula]

On Thu, 25 Jun 2026, Steven Rostedt <rostedt@xxxxxxxxxx> wrote:
> Remove trace_printk.h by creating a trace_controls.h for those places that
> need access to tracing prototypes like tracing_off() and for the places that
> need trace_printk() directly, to have it included directly.
>
> Changse since v3: https://lore.kernel.org/all/20260624081806.120105649@xxxxxxxxxx/
>
> - Always include trace_controls.h in rcu.h (kernel test robot)
>
>   There are other configs that may include tracing_off() in rcu.h besides
>   the one that had the include of trace_controls.h. Just always include
>   it in that header to be safe.
>
> Steven Rostedt (2):
>       tracing: Move non-trace_printk prototypes into trace_controls.h
>       tracing: Remove trace_printk.h from kernel.h
>
> ----
>  arch/powerpc/kvm/book3s_xics.c         |  1 +
>  arch/powerpc/xmon/xmon.c               |  1 +
>  arch/s390/kernel/ipl.c                 |  1 +
>  arch/s390/kernel/machine_kexec.c       |  1 +
>  drivers/gpu/drm/i915/gt/intel_gtt.h    |  1 +
>  drivers/gpu/drm/i915/i915_gem.h        |  2 ++

For the i915 parts,

Acked-by: Jani Nikula <jani.nikula@xxxxxxxxx>

for merging via whichever tree.

>  drivers/hwtracing/stm/dummy_stm.c      |  1 +
>  drivers/infiniband/hw/hfi1/trace_dbg.h |  1 +
>  drivers/tty/sysrq.c                    |  1 +
>  drivers/usb/early/xhci-dbc.c           |  1 +
>  fs/ext4/inline.c                       |  1 +
>  include/linux/ftrace.h                 |  2 ++
>  include/linux/kernel.h                 |  1 -
>  include/linux/sunrpc/debug.h           |  1 +
>  include/linux/trace_controls.h         | 54 ++++++++++++++++++++++++++++++++
>  include/linux/trace_printk.h           | 56 ++--------------------------------
>  kernel/debug/debug_core.c              |  1 +
>  kernel/panic.c                         |  1 +
>  kernel/rcu/rcu.h                       |  1 +
>  kernel/rcu/rcutorture.c                |  1 +
>  kernel/trace/ring_buffer_benchmark.c   |  1 +
>  kernel/trace/trace.h                   |  1 +
>  kernel/trace/trace_benchmark.c         |  1 +
>  lib/sys_info.c                         |  1 +
>  samples/fprobe/fprobe_example.c        |  1 +
>  samples/ftrace/ftrace-direct-too.c     |  1 -
>  samples/trace_printk/trace-printk.c    |  1 +
>  27 files changed, 82 insertions(+), 55 deletions(-)
>  create mode 100644 include/linux/trace_controls.h

-- 
Jani Nikula, Intel