disable kernel build waring

hc

2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b

 kernel/include/linux/srcutree.h
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@@ -1,24 +1,11 @@
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+/* SPDX-License-Identifier: GPL-2.0+ */
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 /*
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  * Sleepable Read-Copy Update mechanism for mutual exclusion,
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  *	tree variant.
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  *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (at your option) any later version.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program; if not, you can access it online at
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- * http://www.gnu.org/licenses/gpl-2.0.html.
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- *
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  * Copyright (C) IBM Corporation, 2017
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  *
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- * Author: Paul McKenney <paulmck@us.ibm.com>
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+ * Author: Paul McKenney <paulmck@linux.ibm.com>
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  */
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 #ifndef _LINUX_SRCU_TREE_H
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@@ -45,13 +32,14 @@
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 	unsigned long srcu_gp_seq_needed;	/* Furthest future GP needed. */
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 	unsigned long srcu_gp_seq_needed_exp;	/* Furthest future exp GP. */
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 	bool srcu_cblist_invoking;		/* Invoking these CBs? */
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-	struct delayed_work work;		/* Context for CB invoking. */
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+	struct timer_list delay_work;		/* Delay for CB invoking */
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+	struct work_struct work;		/* Context for CB invoking. */
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 	struct rcu_head srcu_barrier_head;	/* For srcu_barrier() use. */
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 	struct srcu_node *mynode;		/* Leaf srcu_node. */
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 	unsigned long grpmask;			/* Mask for leaf srcu_node */
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 						/*  ->srcu_data_have_cbs[]. */
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 	int cpu;
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-	struct srcu_struct *sp;
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+	struct srcu_struct *ssp;
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 };
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 /*
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@@ -105,12 +93,13 @@
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 #define SRCU_STATE_SCAN2	2
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 #define __SRCU_STRUCT_INIT(name, pcpu_name)				\
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-	{								\
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-		.sda = &pcpu_name,					\
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-		.lock = __SPIN_LOCK_UNLOCKED(name.lock),		\
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-		.srcu_gp_seq_needed = 0 - 1,				\
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-		__SRCU_DEP_MAP_INIT(name)				\
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-	}
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+{									\
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+	.sda = &pcpu_name,						\
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+	.lock = __SPIN_LOCK_UNLOCKED(name.lock),			\
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+	.srcu_gp_seq_needed = -1UL,					\
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+	.work = __DELAYED_WORK_INITIALIZER(name.work, NULL, 0),		\
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+	__SRCU_DEP_MAP_INIT(name)					\
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+}
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 /*
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  * Define and initialize a srcu struct at build time.
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@@ -131,14 +120,22 @@
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  *
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  * See include/linux/percpu-defs.h for the rules on per-CPU variables.
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  */
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-#define __DEFINE_SRCU(name, is_static)					\
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-	static DEFINE_PER_CPU(struct srcu_data, name##_srcu_data);\
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-	is_static struct srcu_struct name = __SRCU_STRUCT_INIT(name, name##_srcu_data)
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+#ifdef MODULE
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+# define __DEFINE_SRCU(name, is_static)					\
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+	is_static struct srcu_struct name;				\
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+	struct srcu_struct * const __srcu_struct_##name			\
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+		__section("___srcu_struct_ptrs") = &name
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+#else
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+# define __DEFINE_SRCU(name, is_static)					\
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+	static DEFINE_PER_CPU(struct srcu_data, name##_srcu_data);	\
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+	is_static struct srcu_struct name =				\
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+		__SRCU_STRUCT_INIT(name, name##_srcu_data)
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+#endif
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 #define DEFINE_SRCU(name)		__DEFINE_SRCU(name, /* not static */)
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 #define DEFINE_STATIC_SRCU(name)	__DEFINE_SRCU(name, static)
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-void synchronize_srcu_expedited(struct srcu_struct *sp);
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-void srcu_barrier(struct srcu_struct *sp);
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-void srcu_torture_stats_print(struct srcu_struct *sp, char *tt, char *tf);
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+void synchronize_srcu_expedited(struct srcu_struct *ssp);
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+void srcu_barrier(struct srcu_struct *ssp);
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+void srcu_torture_stats_print(struct srcu_struct *ssp, char *tt, char *tf);
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 #endif