diff options
Diffstat (limited to 'include/linux/rcupreempt_trace.h')
| -rw-r--r-- | include/linux/rcupreempt_trace.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/include/linux/rcupreempt_trace.h b/include/linux/rcupreempt_trace.h new file mode 100644 index 000000000000..21cd6b2a5c42 --- /dev/null +++ b/include/linux/rcupreempt_trace.h | |||
| @@ -0,0 +1,99 @@ | |||
| 1 | /* | ||
| 2 | * Read-Copy Update mechanism for mutual exclusion (RT implementation) | ||
| 3 | * | ||
| 4 | * This program is free software; you can redistribute it and/or modify | ||
| 5 | * it under the terms of the GNU General Public License as published by | ||
| 6 | * the Free Software Foundation; either version 2 of the License, or | ||
| 7 | * (at your option) any later version. | ||
| 8 | * | ||
| 9 | * This program is distributed in the hope that it will be useful, | ||
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 12 | * GNU General Public License for more details. | ||
| 13 | * | ||
| 14 | * You should have received a copy of the GNU General Public License | ||
| 15 | * along with this program; if not, write to the Free Software | ||
| 16 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | ||
| 17 | * | ||
| 18 | * Copyright (C) IBM Corporation, 2006 | ||
| 19 | * | ||
| 20 | * Author: Paul McKenney <paulmck@us.ibm.com> | ||
| 21 | * | ||
| 22 | * Based on the original work by Paul McKenney <paul.mckenney@us.ibm.com> | ||
| 23 | * and inputs from Rusty Russell, Andrea Arcangeli and Andi Kleen. | ||
| 24 | * Papers: | ||
| 25 | * http://www.rdrop.com/users/paulmck/paper/rclockpdcsproof.pdf | ||
| 26 | * http://lse.sourceforge.net/locking/rclock_OLS.2001.05.01c.sc.pdf (OLS2001) | ||
| 27 | * | ||
| 28 | * For detailed explanation of the Preemptible Read-Copy Update mechanism see - | ||
| 29 | * http://lwn.net/Articles/253651/ | ||
| 30 | */ | ||
| 31 | |||
| 32 | #ifndef __LINUX_RCUPREEMPT_TRACE_H | ||
| 33 | #define __LINUX_RCUPREEMPT_TRACE_H | ||
| 34 | |||
| 35 | #ifdef __KERNEL__ | ||
| 36 | #include <linux/types.h> | ||
| 37 | #include <linux/kernel.h> | ||
| 38 | |||
| 39 | #include <asm/atomic.h> | ||
| 40 | |||
| 41 | /* | ||
| 42 | * PREEMPT_RCU data structures. | ||
| 43 | */ | ||
| 44 | |||
| 45 | struct rcupreempt_trace { | ||
| 46 | long next_length; | ||
| 47 | long next_add; | ||
| 48 | long wait_length; | ||
| 49 | long wait_add; | ||
| 50 | long done_length; | ||
| 51 | long done_add; | ||
| 52 | long done_remove; | ||
| 53 | atomic_t done_invoked; | ||
| 54 | long rcu_check_callbacks; | ||
| 55 | atomic_t rcu_try_flip_1; | ||
| 56 | atomic_t rcu_try_flip_e1; | ||
| 57 | long rcu_try_flip_i1; | ||
| 58 | long rcu_try_flip_ie1; | ||
| 59 | long rcu_try_flip_g1; | ||
| 60 | long rcu_try_flip_a1; | ||
| 61 | long rcu_try_flip_ae1; | ||
| 62 | long rcu_try_flip_a2; | ||
| 63 | long rcu_try_flip_z1; | ||
| 64 | long rcu_try_flip_ze1; | ||
| 65 | long rcu_try_flip_z2; | ||
| 66 | long rcu_try_flip_m1; | ||
| 67 | long rcu_try_flip_me1; | ||
| 68 | long rcu_try_flip_m2; | ||
| 69 | }; | ||
| 70 | |||
| 71 | #ifdef CONFIG_RCU_TRACE | ||
| 72 | #define RCU_TRACE(fn, arg) fn(arg); | ||
| 73 | #else | ||
| 74 | #define RCU_TRACE(fn, arg) | ||
| 75 | #endif | ||
| 76 | |||
| 77 | extern void rcupreempt_trace_move2done(struct rcupreempt_trace *trace); | ||
| 78 | extern void rcupreempt_trace_move2wait(struct rcupreempt_trace *trace); | ||
| 79 | extern void rcupreempt_trace_try_flip_1(struct rcupreempt_trace *trace); | ||
| 80 | extern void rcupreempt_trace_try_flip_e1(struct rcupreempt_trace *trace); | ||
| 81 | extern void rcupreempt_trace_try_flip_i1(struct rcupreempt_trace *trace); | ||
| 82 | extern void rcupreempt_trace_try_flip_ie1(struct rcupreempt_trace *trace); | ||
| 83 | extern void rcupreempt_trace_try_flip_g1(struct rcupreempt_trace *trace); | ||
| 84 | extern void rcupreempt_trace_try_flip_a1(struct rcupreempt_trace *trace); | ||
| 85 | extern void rcupreempt_trace_try_flip_ae1(struct rcupreempt_trace *trace); | ||
| 86 | extern void rcupreempt_trace_try_flip_a2(struct rcupreempt_trace *trace); | ||
| 87 | extern void rcupreempt_trace_try_flip_z1(struct rcupreempt_trace *trace); | ||
| 88 | extern void rcupreempt_trace_try_flip_ze1(struct rcupreempt_trace *trace); | ||
| 89 | extern void rcupreempt_trace_try_flip_z2(struct rcupreempt_trace *trace); | ||
| 90 | extern void rcupreempt_trace_try_flip_m1(struct rcupreempt_trace *trace); | ||
| 91 | extern void rcupreempt_trace_try_flip_me1(struct rcupreempt_trace *trace); | ||
| 92 | extern void rcupreempt_trace_try_flip_m2(struct rcupreempt_trace *trace); | ||
| 93 | extern void rcupreempt_trace_check_callbacks(struct rcupreempt_trace *trace); | ||
| 94 | extern void rcupreempt_trace_done_remove(struct rcupreempt_trace *trace); | ||
| 95 | extern void rcupreempt_trace_invoke(struct rcupreempt_trace *trace); | ||
| 96 | extern void rcupreempt_trace_next_add(struct rcupreempt_trace *trace); | ||
| 97 | |||
| 98 | #endif /* __KERNEL__ */ | ||
| 99 | #endif /* __LINUX_RCUPREEMPT_TRACE_H */ | ||