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| author |   Ingo Molnar <mingo@kernel.org> | 2017-04-23 11:12:44 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-04-23 11:12:44 +0200 |
| commit | 58d30c36d472b75e8e9962d6a640be19d9389128 (patch) | |
| tree | ce161b15e844d081f527f02a4f74ffd1171b2b14 /kernel/rcu/tiny_plugin.h | |
| parent | Merge tag 'nfsd-4.11-2' of git://linux-nfs.org/~bfields/linux (diff) | |
| parent | Merge branches 'doc.2017.04.12a', 'fixes.2017.04.19a' and 'srcu.2017.04.21a' into HEAD (diff) | |
| download | linux-dev-58d30c36d472b75e8e9962d6a640be19d9389128.tar.xz linux-dev-58d30c36d472b75e8e9962d6a640be19d9389128.zip | |
Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU updates from Paul E. McKenney:
- Documentation updates.
- Miscellaneous fixes.
- Parallelize SRCU callback handling (plus overlapping patches).
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/rcu/tiny_plugin.h')
| -rw-r--r-- | kernel/rcu/tiny_plugin.h | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/kernel/rcu/tiny_plugin.h b/kernel/rcu/tiny_plugin.h index c64b827ecbca..371034e77f87 100644 --- a/kernel/rcu/tiny_plugin.h +++ b/kernel/rcu/tiny_plugin.h @@ -52,7 +52,7 @@ static struct rcu_ctrlblk rcu_bh_ctrlblk = { RCU_TRACE(.name = "rcu_bh") }; -#ifdef CONFIG_DEBUG_LOCK_ALLOC +#if defined(CONFIG_DEBUG_LOCK_ALLOC) || defined(CONFIG_SRCU) #include <linux/kernel_stat.h> int rcu_scheduler_active __read_mostly; @@ -65,15 +65,16 @@ EXPORT_SYMBOL_GPL(rcu_scheduler_active); * to RCU_SCHEDULER_RUNNING, skipping the RCU_SCHEDULER_INIT stage. * The reason for this is that Tiny RCU does not need kthreads, so does * not have to care about the fact that the scheduler is half-initialized - * at a certain phase of the boot process. + * at a certain phase of the boot process. Unless SRCU is in the mix. */ void __init rcu_scheduler_starting(void) { WARN_ON(nr_context_switches() > 0); - rcu_scheduler_active = RCU_SCHEDULER_RUNNING; + rcu_scheduler_active = IS_ENABLED(CONFIG_SRCU) + ? RCU_SCHEDULER_INIT : RCU_SCHEDULER_RUNNING; } -#endif /* #ifdef CONFIG_DEBUG_LOCK_ALLOC */ +#endif /* #if defined(CONFIG_DEBUG_LOCK_ALLOC) || defined(CONFIG_SRCU) */ #ifdef CONFIG_RCU_TRACE @@ -162,8 +163,8 @@ static void reset_cpu_stall_ticks(struct rcu_ctrlblk *rcp) static void check_cpu_stalls(void) { - RCU_TRACE(check_cpu_stall(&rcu_bh_ctrlblk)); - RCU_TRACE(check_cpu_stall(&rcu_sched_ctrlblk)); + RCU_TRACE(check_cpu_stall(&rcu_bh_ctrlblk);) + RCU_TRACE(check_cpu_stall(&rcu_sched_ctrlblk);) } #endif /* #ifdef CONFIG_RCU_TRACE */ |