- 'for_each_component_dais'
- 'for_each_component_dais_safe'
- 'for_each_console'
+ - 'for_each_console_srcu'
- 'for_each_cpu'
- 'for_each_cpu_and'
- 'for_each_cpu_not'
- 'perf_hpp_list__for_each_sort_list_safe'
- 'perf_pmu__for_each_hybrid_pmu'
- 'ping_portaddr_for_each_entry'
+ - 'ping_portaddr_for_each_entry_rcu'
- 'plist_for_each'
- 'plist_for_each_continue'
- 'plist_for_each_entry'
* Take advantage of the fact that there is only one CPU, which
* allows us to ignore virtualization-based context switches.
*/
-static inline void rcu_virt_note_context_switch(int cpu) { }
+static inline void rcu_virt_note_context_switch(void) { }
static inline void rcu_cpu_stall_reset(void) { }
static inline int rcu_jiffies_till_stall_check(void) { return 21 * HZ; }
static inline void rcu_irq_exit_check_preempt(void) { }
-#define rcu_is_idle_cpu(cpu) \
- (is_idle_task(current) && !in_nmi() && !in_hardirq() && !in_serving_softirq())
static inline void exit_rcu(void) { }
static inline bool rcu_preempt_need_deferred_qs(struct task_struct *t)
{
return false;
}
static inline void rcu_preempt_deferred_qs(struct task_struct *t) { }
- #ifdef CONFIG_SRCU
void rcu_scheduler_starting(void);
- #else /* #ifndef CONFIG_SRCU */
- static inline void rcu_scheduler_starting(void) { }
- #endif /* #else #ifndef CONFIG_SRCU */
static inline void rcu_end_inkernel_boot(void) { }
static inline bool rcu_inkernel_boot_has_ended(void) { return true; }
static inline bool rcu_is_watching(void) { return true; }
Say N if you are unsure.
config SRCU
- bool
- help
- This option selects the sleepable version of RCU. This version
- permits arbitrary sleeping or blocking within RCU read-side critical
- sections.
+ def_bool y
config TINY_SRCU
bool
- default y if SRCU && TINY_RCU
+ default y if TINY_RCU
help
This option selects the single-CPU non-preemptible version of SRCU.
config TREE_SRCU
bool
- default y if SRCU && !TINY_RCU
+ default y if !TINY_RCU
help
This option selects the full-fledged version of SRCU.
config TASKS_RCU_GENERIC
def_bool TASKS_RCU || TASKS_RUDE_RCU || TASKS_TRACE_RCU
- select SRCU
help
This option enables generic infrastructure code supporting
task-based RCU implementations. Not for manual selection.
Say N here if you hate read-side memory barriers.
Take the default if you are unsure.
+config RCU_LAZY
+ bool "RCU callback lazy invocation functionality"
+ depends on RCU_NOCB_CPU
+ default n
+ help
+ To save power, batch RCU callbacks and flush after delay, memory
+ pressure, or callback list growing too big.
+
endmenu # "RCU Subsystem"
*/
extern void resched_cpu(int cpu);
- #if defined(CONFIG_SRCU) || !defined(CONFIG_TINY_RCU)
+ #if !defined(CONFIG_TINY_RCU)
#include <linux/rcu_node_tree.h>
(cpu) <= rnp->grphi; \
(cpu) = rcu_find_next_bit((rnp), (cpu) + 1 - (rnp->grplo), (mask)))
+ #endif /* !defined(CONFIG_TINY_RCU) */
+
+ #if !defined(CONFIG_TINY_RCU) || defined(CONFIG_TASKS_RCU_GENERIC)
+
/*
* Wrappers for the rcu_node::lock acquire and release.
*
#define raw_lockdep_assert_held_rcu_node(p) \
lockdep_assert_held(&ACCESS_PRIVATE(p, lock))
- #endif /* #if defined(CONFIG_SRCU) || !defined(CONFIG_TINY_RCU) */
+ #endif // #if !defined(CONFIG_TINY_RCU) || defined(CONFIG_TASKS_RCU_GENERIC)
#ifdef CONFIG_TINY_RCU
/* Tiny RCU doesn't expedite, as its purpose in life is instead to be tiny. */
INVALID_RCU_FLAVOR
};
+#if defined(CONFIG_RCU_LAZY)
+unsigned long rcu_lazy_get_jiffies_till_flush(void);
+void rcu_lazy_set_jiffies_till_flush(unsigned long j);
+#else
+static inline unsigned long rcu_lazy_get_jiffies_till_flush(void) { return 0; }
+static inline void rcu_lazy_set_jiffies_till_flush(unsigned long j) { }
+#endif
+
#if defined(CONFIG_TREE_RCU)
void rcutorture_get_gp_data(enum rcutorture_type test_type, int *flags,
unsigned long *gp_seq);
* behaviour.
*/
test("00|0|0|0|0", "%.2d|%.1d|%.0d|%.*d|%1.0d", 0, 0, 0, 0, 0, 0);
-#ifndef __CHAR_UNSIGNED__
- {
- /*
- * Passing a 'char' to a %02x specifier doesn't do
- * what was presumably the intention when char is
- * signed and the value is negative. One must either &
- * with 0xff or cast to u8.
- */
- char val = -16;
- test("0xfffffff0|0xf0|0xf0", "%#02x|%#02x|%#02x", val, val & 0xff, (u8)val);
- }
-#endif
}
static void __init
static void __init fwnode_pointer(void)
{
- const struct software_node softnodes[] = {
- { .name = "first", },
- { .name = "second", .parent = &softnodes[0], },
- { .name = "third", .parent = &softnodes[1], },
- { NULL /* Guardian */ }
- };
- const char * const full_name = "first/second/third";
+ const struct software_node first = { .name = "first" };
+ const struct software_node second = { .name = "second", .parent = &first };
+ const struct software_node third = { .name = "third", .parent = &second };
+ const struct software_node *group[] = { &first, &second, &third, NULL };
const char * const full_name_second = "first/second";
+ const char * const full_name_third = "first/second/third";
const char * const second_name = "second";
const char * const third_name = "third";
int rval;
- rval = software_node_register_nodes(softnodes);
+ rval = software_node_register_node_group(group);
if (rval) {
pr_warn("cannot register softnodes; rval %d\n", rval);
return;
}
- test(full_name_second, "%pfw", software_node_fwnode(&softnodes[1]));
- test(full_name, "%pfw", software_node_fwnode(&softnodes[2]));
- test(full_name, "%pfwf", software_node_fwnode(&softnodes[2]));
- test(second_name, "%pfwP", software_node_fwnode(&softnodes[1]));
- test(third_name, "%pfwP", software_node_fwnode(&softnodes[2]));
+ test(full_name_second, "%pfw", software_node_fwnode(&second));
+ test(full_name_third, "%pfw", software_node_fwnode(&third));
+ test(full_name_third, "%pfwf", software_node_fwnode(&third));
+ test(second_name, "%pfwP", software_node_fwnode(&second));
+ test(third_name, "%pfwP", software_node_fwnode(&third));
- software_node_unregister_nodes(softnodes);
+ software_node_unregister_node_group(group);
}
static void __init fourcc_pointer(void)
projects / J-linux.git / commitdiff