rcu/tree: Simplify KFREE_BULK_MAX_ENTR macro (3af84862) · Commits · 戴 / test

kernel/rcu/tree.c

+9 −8

Original line number	Diff line number	Diff line
		@@ -2958,13 +2958,6 @@ EXPORT_SYMBOL_GPL(call_rcu);
		#define KFREE_DRAIN_JIFFIES (HZ / 50)
		#define KFREE_N_BATCHES 2

		/*
		* This macro defines how many entries the "records" array
		* will contain. It is based on the fact that the size of
		* kfree_rcu_bulk_data structure becomes exactly one page.
		*/
		#define KFREE_BULK_MAX_ENTR ((PAGE_SIZE / sizeof(void *)) - 3)

		/**
		* struct kfree_rcu_bulk_data - single block to store kfree_rcu() pointers
		* @nr_records: Number of active pointers in the array
		@@ -2973,10 +2966,18 @@ EXPORT_SYMBOL_GPL(call_rcu);
		*/
		struct kfree_rcu_bulk_data {
		unsigned long nr_records;
		void *records[KFREE_BULK_MAX_ENTR];
		struct kfree_rcu_bulk_data *next;
		void *records[];
		};

		/*
		* This macro defines how many entries the "records" array
		* will contain. It is based on the fact that the size of
		* kfree_rcu_bulk_data structure becomes exactly one page.
		*/
		#define KFREE_BULK_MAX_ENTR \
		((PAGE_SIZE - sizeof(struct kfree_rcu_bulk_data)) / sizeof(void *))

		/**
		* struct kfree_rcu_cpu_work - single batch of kfree_rcu() requests
		* @rcu_work: Let queue_rcu_work() invoke workqueue handler after grace period