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Merge branches 'doc.2019.12.10a', 'exp.2019.12.09a', 'fixes.2020.01.24a', 'kfree_rcu.2020.01.24a', 'list.2020.01.10a', 'preempt.2020.01.24a' and 'torture.2019.12.09a' into HEAD

Browse Source 
doc.2019.12.10a: Documentations updates
exp.2019.12.09a: Expedited grace-period updates
fixes.2020.01.24a: Miscellaneous fixes
kfree_rcu.2020.01.24a: Batch kfree_rcu() work
list.2020.01.10a: RCU-protected-list updates
preempt.2020.01.24a: Preemptible RCU updates
torture.2019.12.09a: Torture-test updates
This commit is contained in:
Paul E. McKenney
2020-01-24 10:37:27 -08:00
parent 6e6eca2ee7 df1e849ae4 f6105fc2a9 189a6883dc afa47fdfa2 5b14557b07 b22eb7cefb
commit 0e247386d9
39 changed files with 1070 additions and 575 deletions
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14
kernel/rcu/update.c
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@@ -40,6 +40,7 @@
#include <linux/rcupdate_wait.h>
#include <linux/sched/isolation.h>
#include <linux/kprobes.h>
#include <linux/slab.h>
#define CREATE_TRACE_POINTS
@@ -51,9 +52,7 @@
#define MODULE_PARAM_PREFIX "rcupdate."
#ifndef CONFIG_TINY_RCU
extern int rcu_expedited; /* from sysctl */
module_param(rcu_expedited, int, 0);
extern int rcu_normal; /* from sysctl */
module_param(rcu_normal, int, 0);
static int rcu_normal_after_boot;
module_param(rcu_normal_after_boot, int, 0);
@@ -218,6 +217,7 @@ static int __init rcu_set_runtime_mode(void)
{
rcu_test_sync_prims();
rcu_scheduler_active = RCU_SCHEDULER_RUNNING;
kfree_rcu_scheduler_running();
rcu_test_sync_prims();
return 0;
}
@@ -435,7 +435,7 @@ struct debug_obj_descr rcuhead_debug_descr = {
EXPORT_SYMBOL_GPL(rcuhead_debug_descr);
#endif /* #ifdef CONFIG_DEBUG_OBJECTS_RCU_HEAD */
#if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) || defined(CONFIG_RCU_TRACE)
#if defined(CONFIG_TREE_RCU) || defined(CONFIG_RCU_TRACE)
void do_trace_rcu_torture_read(const char *rcutorturename, struct rcu_head *rhp,
unsigned long secs,
unsigned long c_old, unsigned long c)
@@ -853,14 +853,22 @@ static void test_callback(struct rcu_head *r)
DEFINE_STATIC_SRCU(early_srcu);
struct early_boot_kfree_rcu {
struct rcu_head rh;
};
static void early_boot_test_call_rcu(void)
{
static struct rcu_head head;
static struct rcu_head shead;
struct early_boot_kfree_rcu *rhp;
call_rcu(&head, test_callback);
if (IS_ENABLED(CONFIG_SRCU))
call_srcu(&early_srcu, &shead, test_callback);
rhp = kmalloc(sizeof(*rhp), GFP_KERNEL);
if (!WARN_ON_ONCE(!rhp))
kfree_rcu(rhp, rh);
}
void rcu_early_boot_tests(void)