ia64/linux-2.6.18-xen.hg

view net/sctp/objcnt.c @ 871:9cbcc9008446

xen/x86: don't initialize cpu_data[]'s apicid field on generic code

Afaict, this is not only redundant with the intialization done in
drivers/xen/core/smpboot.c, but actually results - at least for
secondary CPUs - in the Xen-specific value written to be later
overwritten with whatever the generic code determines (with no
guarantee that the two values are identical).

Signed-off-by: Jan Beulich <jbeulich@novell.com>
author Keir Fraser <keir.fraser@citrix.com>
date Thu May 14 10:09:15 2009 +0100 (2009-05-14)
parents 831230e53067
children
line source
1 /* SCTP kernel reference Implementation
2 * (C) Copyright IBM Corp. 2001, 2004
3 *
4 * This file is part of the SCTP kernel reference Implementation
5 *
6 * Support for memory object debugging. This allows one to monitor the
7 * object allocations/deallocations for types instrumented for this
8 * via the proc fs.
9 *
10 * The SCTP reference implementation is free software;
11 * you can redistribute it and/or modify it under the terms of
12 * the GNU General Public License as published by
13 * the Free Software Foundation; either version 2, or (at your option)
14 * any later version.
15 *
16 * The SCTP reference implementation is distributed in the hope that it
17 * will be useful, but WITHOUT ANY WARRANTY; without even the implied
18 * ************************
19 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
20 * See the GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with GNU CC; see the file COPYING. If not, write to
24 * the Free Software Foundation, 59 Temple Place - Suite 330,
25 * Boston, MA 02111-1307, USA.
26 *
27 * Please send any bug reports or fixes you make to the
28 * email address(es):
29 * lksctp developers <lksctp-developers@lists.sourceforge.net>
30 *
31 * Or submit a bug report through the following website:
32 * http://www.sf.net/projects/lksctp
33 *
34 * Written or modified by:
35 * Jon Grimm <jgrimm@us.ibm.com>
36 *
37 * Any bugs reported given to us we will try to fix... any fixes shared will
38 * be incorporated into the next SCTP release.
39 */
41 #include <linux/kernel.h>
42 #include <net/sctp/sctp.h>
44 /*
45 * Global counters to count raw object allocation counts.
46 * To add new counters, choose a unique suffix for the variable
47 * name as the helper macros key off this suffix to make
48 * life easier for the programmer.
49 */
51 SCTP_DBG_OBJCNT(sock);
52 SCTP_DBG_OBJCNT(ep);
53 SCTP_DBG_OBJCNT(transport);
54 SCTP_DBG_OBJCNT(assoc);
55 SCTP_DBG_OBJCNT(bind_addr);
56 SCTP_DBG_OBJCNT(bind_bucket);
57 SCTP_DBG_OBJCNT(chunk);
58 SCTP_DBG_OBJCNT(addr);
59 SCTP_DBG_OBJCNT(ssnmap);
60 SCTP_DBG_OBJCNT(datamsg);
62 /* An array to make it easy to pretty print the debug information
63 * to the proc fs.
64 */
65 static sctp_dbg_objcnt_entry_t sctp_dbg_objcnt[] = {
66 SCTP_DBG_OBJCNT_ENTRY(sock),
67 SCTP_DBG_OBJCNT_ENTRY(ep),
68 SCTP_DBG_OBJCNT_ENTRY(assoc),
69 SCTP_DBG_OBJCNT_ENTRY(transport),
70 SCTP_DBG_OBJCNT_ENTRY(chunk),
71 SCTP_DBG_OBJCNT_ENTRY(bind_addr),
72 SCTP_DBG_OBJCNT_ENTRY(bind_bucket),
73 SCTP_DBG_OBJCNT_ENTRY(addr),
74 SCTP_DBG_OBJCNT_ENTRY(ssnmap),
75 SCTP_DBG_OBJCNT_ENTRY(datamsg),
76 };
78 /* Callback from procfs to read out objcount information.
79 * Walk through the entries in the sctp_dbg_objcnt array, dumping
80 * the raw object counts for each monitored type.
81 *
82 * This code was modified from similar code in route.c
83 */
84 static int sctp_dbg_objcnt_read(char *buffer, char **start, off_t offset,
85 int length, int *eof, void *data)
86 {
87 int len = 0;
88 off_t pos = 0;
89 int entries;
90 int i;
91 char temp[128];
93 /* How many entries? */
94 entries = ARRAY_SIZE(sctp_dbg_objcnt);
96 /* Walk the entries and print out the debug information
97 * for proc fs.
98 */
99 for (i = 0; i < entries; i++) {
100 pos += 128;
102 /* Skip ahead. */
103 if (pos <= offset) {
104 len = 0;
105 continue;
106 }
107 /* Print out each entry. */
108 sprintf(temp, "%s: %d",
109 sctp_dbg_objcnt[i].label,
110 atomic_read(sctp_dbg_objcnt[i].counter));
112 sprintf(buffer + len, "%-127s\n", temp);
113 len += 128;
114 if (pos >= offset+length)
115 goto done;
116 }
118 done:
119 *start = buffer + len - (pos - offset);
120 len = pos - offset;
121 if (len > length)
122 len = length;
124 return len;
125 }
127 /* Initialize the objcount in the proc filesystem. */
128 void sctp_dbg_objcnt_init(void)
129 {
130 struct proc_dir_entry *ent;
131 ent = create_proc_read_entry("sctp_dbg_objcnt", 0, proc_net_sctp,
132 sctp_dbg_objcnt_read, NULL);
133 if (!ent)
134 printk(KERN_WARNING
135 "sctp_dbg_objcnt: Unable to create /proc entry.\n");
136 }
138 /* Cleanup the objcount entry in the proc filesystem. */
139 void sctp_dbg_objcnt_exit(void)
140 {
141 remove_proc_entry("sctp_dbg_objcnt", proc_net_sctp);
142 }