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Diffstat (limited to 'include/linux/smp.h')
-rw-r--r--include/linux/smp.h28
1 files changed, 25 insertions, 3 deletions
diff --git a/include/linux/smp.h b/include/linux/smp.h
index cbc9162689d0..7ee202ad21a6 100644
--- a/include/linux/smp.h
+++ b/include/linux/smp.h
@@ -16,17 +16,39 @@
typedef void (*smp_call_func_t)(void *info);
typedef bool (*smp_cond_func_t)(int cpu, void *info);
+
+enum {
+ CSD_FLAG_LOCK = 0x01,
+
+ /* IRQ_WORK_flags */
+
+ CSD_TYPE_ASYNC = 0x00,
+ CSD_TYPE_SYNC = 0x10,
+ CSD_TYPE_IRQ_WORK = 0x20,
+ CSD_TYPE_TTWU = 0x30,
+ CSD_FLAG_TYPE_MASK = 0xF0,
+};
+
+/*
+ * structure shares (partial) layout with struct irq_work
+ */
struct __call_single_data {
struct llist_node llist;
+ unsigned int flags;
smp_call_func_t func;
void *info;
- unsigned int flags;
};
/* Use __aligned() to avoid to use 2 cache lines for 1 csd */
typedef struct __call_single_data call_single_data_t
__aligned(sizeof(struct __call_single_data));
+/*
+ * Enqueue a llist_node on the call_single_queue; be very careful, read
+ * flush_smp_call_function_queue() in detail.
+ */
+extern void __smp_call_single_queue(int cpu, struct llist_node *node);
+
/* total number of cpus in this system (may exceed NR_CPUS) */
extern unsigned int total_cpus;
@@ -227,8 +249,8 @@ static inline int get_boot_cpu_id(void)
*/
extern void arch_disable_smp_support(void);
-extern void arch_enable_nonboot_cpus_begin(void);
-extern void arch_enable_nonboot_cpus_end(void);
+extern void arch_thaw_secondary_cpus_begin(void);
+extern void arch_thaw_secondary_cpus_end(void);
void smp_setup_processor_id(void);