2025-09-19T15:36:50Z Steven Rostedt [off-list ref]:

On Fri, 19 Sep 2025 16:09:50 +0200
Gabriele Monaco [off-list ref] wrote:

quoted

The tracepoints sched_entry, sched_exit and sched_set_need_resched
are not exported to tracefs as trace events, this allows only kernel
code to access them. Helper modules like [1] can be used to still have
the tracepoints available to ftrace for debugging purposes, but they do
rely on the tracepoints being exported.

Export the 3 not exported tracepoints.
Note that sched_set_state is already exported as the macro is called
from modules.

[1] - https://github.com/qais-yousef/sched_tp.git

Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>

Note, for all the scheduler changes, we need an acked-by from the scheduler
maintainers.

Alright got it.

After you have acks and are satisfied with the code (hopefully someone else
can review them), you can send me a pull request to be added into linux-next.

Usually Nam does a very good job reviewing them.

I'll still run them through my own tests.

Which BTW, there should be a bunch of tests in:

  tools/testing/selftests/verification/

(which doesn't yet exist).

Yeah that's the next thing in my imaginary list, or perhaps something inspired on what's done in rtla.

Thanks,
Gabriele

-- Steve

quoted

---
kernel/sched/core.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index ccba6fc3c3fe..334ff5b214d7 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c

@@ -117,6 +117,9 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(sched_util_est_cfs_tp);

EXPORT_TRACEPOINT_SYMBOL_GPL(sched_util_est_se_tp);
EXPORT_TRACEPOINT_SYMBOL_GPL(sched_update_nr_running_tp);
EXPORT_TRACEPOINT_SYMBOL_GPL(sched_compute_energy_tp);
+EXPORT_TRACEPOINT_SYMBOL_GPL(sched_entry_tp);
+EXPORT_TRACEPOINT_SYMBOL_GPL(sched_exit_tp);
+EXPORT_TRACEPOINT_SYMBOL_GPL(sched_set_need_resched_tp);

DEFINE_PER_CPU_SHARED_ALIGNED(struct rq, runqueues);