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e260be67 PM |
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 | ||
e260be67 PM |
35 | #include <linux/types.h> |
36 | #include <linux/kernel.h> | |
37 | ||
38 | #include <asm/atomic.h> | |
39 | ||
40 | /* | |
41 | * PREEMPT_RCU data structures. | |
42 | */ | |
43 | ||
44 | struct rcupreempt_trace { | |
45 | long next_length; | |
46 | long next_add; | |
47 | long wait_length; | |
48 | long wait_add; | |
49 | long done_length; | |
50 | long done_add; | |
51 | long done_remove; | |
52 | atomic_t done_invoked; | |
53 | long rcu_check_callbacks; | |
54 | atomic_t rcu_try_flip_1; | |
55 | atomic_t rcu_try_flip_e1; | |
56 | long rcu_try_flip_i1; | |
57 | long rcu_try_flip_ie1; | |
58 | long rcu_try_flip_g1; | |
59 | long rcu_try_flip_a1; | |
60 | long rcu_try_flip_ae1; | |
61 | long rcu_try_flip_a2; | |
62 | long rcu_try_flip_z1; | |
63 | long rcu_try_flip_ze1; | |
64 | long rcu_try_flip_z2; | |
65 | long rcu_try_flip_m1; | |
66 | long rcu_try_flip_me1; | |
67 | long rcu_try_flip_m2; | |
68 | }; | |
69 | ||
70 | #ifdef CONFIG_RCU_TRACE | |
71 | #define RCU_TRACE(fn, arg) fn(arg); | |
72 | #else | |
73 | #define RCU_TRACE(fn, arg) | |
74 | #endif | |
75 | ||
76 | extern void rcupreempt_trace_move2done(struct rcupreempt_trace *trace); | |
77 | extern void rcupreempt_trace_move2wait(struct rcupreempt_trace *trace); | |
78 | extern void rcupreempt_trace_try_flip_1(struct rcupreempt_trace *trace); | |
79 | extern void rcupreempt_trace_try_flip_e1(struct rcupreempt_trace *trace); | |
80 | extern void rcupreempt_trace_try_flip_i1(struct rcupreempt_trace *trace); | |
81 | extern void rcupreempt_trace_try_flip_ie1(struct rcupreempt_trace *trace); | |
82 | extern void rcupreempt_trace_try_flip_g1(struct rcupreempt_trace *trace); | |
83 | extern void rcupreempt_trace_try_flip_a1(struct rcupreempt_trace *trace); | |
84 | extern void rcupreempt_trace_try_flip_ae1(struct rcupreempt_trace *trace); | |
85 | extern void rcupreempt_trace_try_flip_a2(struct rcupreempt_trace *trace); | |
86 | extern void rcupreempt_trace_try_flip_z1(struct rcupreempt_trace *trace); | |
87 | extern void rcupreempt_trace_try_flip_ze1(struct rcupreempt_trace *trace); | |
88 | extern void rcupreempt_trace_try_flip_z2(struct rcupreempt_trace *trace); | |
89 | extern void rcupreempt_trace_try_flip_m1(struct rcupreempt_trace *trace); | |
90 | extern void rcupreempt_trace_try_flip_me1(struct rcupreempt_trace *trace); | |
91 | extern void rcupreempt_trace_try_flip_m2(struct rcupreempt_trace *trace); | |
92 | extern void rcupreempt_trace_check_callbacks(struct rcupreempt_trace *trace); | |
93 | extern void rcupreempt_trace_done_remove(struct rcupreempt_trace *trace); | |
94 | extern void rcupreempt_trace_invoke(struct rcupreempt_trace *trace); | |
95 | extern void rcupreempt_trace_next_add(struct rcupreempt_trace *trace); | |
96 | ||
e260be67 | 97 | #endif /* __LINUX_RCUPREEMPT_TRACE_H */ |