Add a comment explaining the RT_RUNTIME_SHARE sched feature. Signed-off-by: Daniel Bristot de Oliveira <bris...@redhat.com> Cc: Ingo Molnar <mi...@redhat.com> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Steven Rostedt <rost...@goodmis.org> Cc: Clark Williams <willi...@redhat.com> Cc: Luis Claudio R. Goncalves <lgonc...@redhat.com> Cc: linux-kernel@vger.kernel.org
diff --git a/kernel/sched/features.h b/kernel/sched/features.h index 5fffebfe..531c4bb 100644 --- a/kernel/sched/features.h +++ b/kernel/sched/features.h @@ -65,7 +65,17 @@ SCHED_FEAT(RT_PUSH_IPI, true) #endif SCHED_FEAT(FORCE_SD_OVERLAP, false) + +/* + * Enables the sharing of rt_runtime between CPUs, allowing a CPU to + * run a real-time task up to 100% of the time while leaving more + * space for non-real-time tasks to run on the CPU that lend rt_runtime. + * + * WARNING: This may allow the starvation of non-real-time tasks pinned + * to the CPU in which a spinning rt-task runs forever. + */ SCHED_FEAT(RT_RUNTIME_SHARE, false) + SCHED_FEAT(LB_MIN, false) SCHED_FEAT(ATTACH_AGE_LOAD, true) -- 2.7.4
