diff options
| author | Richard Braun <rbraun@sceen.net> | 2018-02-20 20:45:13 +0100 |
|---|---|---|
| committer | Richard Braun <rbraun@sceen.net> | 2018-02-20 20:45:13 +0100 |
| commit | 22dff6b7a6839e77d713d671cb2038e56b64ac16 (patch) | |
| tree | 5863ed3d1846228c0434ae9cf9f9d03ede2a953a /kern/thread.c | |
| parent | f923f7a361c8a0b4d081dc04672a59ccd8828704 (diff) | |
kern/rcu: new module
This module implements preemptible RCU.
Diffstat (limited to 'kern/thread.c')
| -rw-r--r-- | kern/thread.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/kern/thread.c b/kern/thread.c index 63af1bde..8460f3bc 100644 --- a/kern/thread.c +++ b/kern/thread.c @@ -101,6 +101,7 @@ #include <kern/macros.h> #include <kern/panic.h> #include <kern/percpu.h> +#include <kern/rcu.h> #include <kern/shell.h> #include <kern/sleepq.h> #include <kern/spinlock.h> @@ -641,6 +642,8 @@ thread_runq_schedule(struct thread_runq *runq) assert(next->preempt_level == THREAD_SUSPEND_PREEMPT_LEVEL); if (likely(prev != next)) { + rcu_report_context_switch(thread_rcu_reader(prev)); + /* * That's where the true context switch occurs. The next thread must * unlock the run queue and reenable preemption. Note that unlocking @@ -1700,6 +1703,7 @@ thread_init_booter(unsigned int cpu) booter->flags = 0; booter->intr_level = 0; booter->preempt_level = 1; + rcu_reader_init(&booter->rcu_reader); cpumap_fill(&booter->cpumap); thread_set_user_sched_policy(booter, THREAD_SCHED_POLICY_IDLE); thread_set_user_sched_class(booter, THREAD_SCHED_CLASS_IDLE); @@ -1828,6 +1832,7 @@ thread_init(struct thread *thread, void *stack, thread->pin_level = 0; thread->intr_level = 0; thread->llsync_level = 0; + rcu_reader_init(&thread->rcu_reader); cpumap_copy(&thread->cpumap, cpumap); thread_set_user_sched_policy(thread, attr->policy); thread_set_user_sched_class(thread, thread_policy_to_class(attr->policy)); |