diff options
Diffstat (limited to 'include/linux/srcutiny.h')
| -rw-r--r-- | include/linux/srcutiny.h | 41 |
1 files changed, 14 insertions, 27 deletions
diff --git a/include/linux/srcutiny.h b/include/linux/srcutiny.h index f41d2fb09f87..5a5a1941ca15 100644 --- a/include/linux/srcutiny.h +++ b/include/linux/srcutiny.h @@ -1,24 +1,11 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * Sleepable Read-Copy Update mechanism for mutual exclusion, * tiny variant. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, you can access it online at - * http://www.gnu.org/licenses/gpl-2.0.html. - * * Copyright (C) IBM Corporation, 2017 * - * Author: Paul McKenney <paulmck@us.ibm.com> + * Author: Paul McKenney <paulmck@linux.ibm.com> */ #ifndef _LINUX_SRCU_TINY_H @@ -60,7 +47,7 @@ void srcu_drive_gp(struct work_struct *wp); #define DEFINE_STATIC_SRCU(name) \ static struct srcu_struct name = __SRCU_STRUCT_INIT(name, name) -void synchronize_srcu(struct srcu_struct *sp); +void synchronize_srcu(struct srcu_struct *ssp); /* * Counts the new reader in the appropriate per-CPU element of the @@ -68,36 +55,36 @@ void synchronize_srcu(struct srcu_struct *sp); * __srcu_read_unlock() must be in the same handler instance. Returns an * index that must be passed to the matching srcu_read_unlock(). */ -static inline int __srcu_read_lock(struct srcu_struct *sp) +static inline int __srcu_read_lock(struct srcu_struct *ssp) { int idx; - idx = READ_ONCE(sp->srcu_idx); - WRITE_ONCE(sp->srcu_lock_nesting[idx], sp->srcu_lock_nesting[idx] + 1); + idx = READ_ONCE(ssp->srcu_idx); + WRITE_ONCE(ssp->srcu_lock_nesting[idx], ssp->srcu_lock_nesting[idx] + 1); return idx; } -static inline void synchronize_srcu_expedited(struct srcu_struct *sp) +static inline void synchronize_srcu_expedited(struct srcu_struct *ssp) { - synchronize_srcu(sp); + synchronize_srcu(ssp); } -static inline void srcu_barrier(struct srcu_struct *sp) +static inline void srcu_barrier(struct srcu_struct *ssp) { - synchronize_srcu(sp); + synchronize_srcu(ssp); } /* Defined here to avoid size increase for non-torture kernels. */ -static inline void srcu_torture_stats_print(struct srcu_struct *sp, +static inline void srcu_torture_stats_print(struct srcu_struct *ssp, char *tt, char *tf) { int idx; - idx = READ_ONCE(sp->srcu_idx) & 0x1; + idx = READ_ONCE(ssp->srcu_idx) & 0x1; pr_alert("%s%s Tiny SRCU per-CPU(idx=%d): (%hd,%hd)\n", tt, tf, idx, - READ_ONCE(sp->srcu_lock_nesting[!idx]), - READ_ONCE(sp->srcu_lock_nesting[idx])); + READ_ONCE(ssp->srcu_lock_nesting[!idx]), + READ_ONCE(ssp->srcu_lock_nesting[idx])); } #endif |