Introduce generic NP-section aware preemption function

Dealing with preemptions across CPUs in the presence of non-preemptive
sections can be tricky and should not be replicated across (event-driven) plugins.

This patch introduces a generic preemption function that handles
non-preemptive sections (hopefully) correctly.

1 files changed, 1 insertions, 0 deletions

diff --git a/include/litmus/litmus.h b/include/litmus/litmus.h
index faaf83961dfa..62107e659c12 100644
--- a/include/litmus/litmus.h
+++ b/include/litmus/litmus.h
@@ -124,6 +124,7 @@ static inline lt_t litmus_clock(void)
         (a)->rt_param.job_params.release,\
         (b)->rt_param.job_params.release))
 
+void preempt_if_preemptable(struct task_struct* t, int on_cpu);
 
 #ifdef CONFIG_SRP
 void srp_ceiling_block(void);