2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
10 #include <afsconfig.h>
11 #include "afs/param.h"
16 #include "afs/sysincludes.h" /* Standard vendor system headers */
17 #include "afsincludes.h" /* Afs-based standard headers */
18 #include "afs/afs_stats.h" /* afs statistics */
23 #include "sys/lockl.h"
24 #include "sys/sleep.h"
25 #include "sys/syspest.h"
26 #include "sys/lock_def.h"
29 #ifndef AFS_PRIVATE_OSI_ALLOCSPACES
31 afs_lock_t osi_fsplock;
32 afs_lock_t osi_flplock;
34 static struct osi_packet {
35 struct osi_packet *next;
36 } *freePacketList = NULL, *freeSmallList = NULL;
38 #endif /* AFS_PRIVATE_OSI_ALLOCSPACES */
40 static char memZero; /* address of 0 bytes for kmem_alloc */
42 #if !defined(AFS_NBSD_ENV) || defined(AFS_NBSD50_ENV)
44 afs_osi_Alloc(size_t size)
46 AFS_STATCNT(osi_Alloc);
47 /* 0-length allocs may return NULL ptr from AFS_KALLOC, so we special-case
48 * things so that NULL returned iff an error occurred */
52 AFS_STATS(afs_stats_cmperf.OutStandingAllocs++);
53 AFS_STATS(afs_stats_cmperf.OutStandingMemUsage += size);
54 #ifdef AFS_LINUX20_ENV
55 return osi_linux_alloc(size, 1);
56 #elif defined(AFS_FBSD_ENV)
57 return osi_fbsd_alloc(size, 1);
59 return AFS_KALLOC(size);
64 afs_osi_Free(void *x, size_t asize)
66 AFS_STATCNT(osi_Free);
68 return; /* check for putting memZero back */
70 AFS_STATS(afs_stats_cmperf.OutStandingAllocs--);
71 AFS_STATS(afs_stats_cmperf.OutStandingMemUsage -= asize);
72 #if defined(AFS_LINUX20_ENV)
74 #elif defined(AFS_FBSD_ENV)
82 afs_osi_FreeStr(char *x)
84 afs_osi_Free(x, strlen(x) + 1);
87 #endif /* !AFS_NBSD_ENV && !defined(AFS_NBSD50_ENV) */
89 #ifndef AFS_PRIVATE_OSI_ALLOCSPACES
91 /* free space allocated by AllocLargeSpace. Also called by mclput when freeing
92 * a packet allocated by osi_NetReceive. */
95 osi_FreeLargeSpace(void *adata)
100 AFS_STATCNT(osi_FreeLargeSpace);
101 afs_stats_cmperf.LargeBlocksActive--;
102 ObtainWriteLock(&osi_flplock, 322);
103 ((struct osi_packet *)adata)->next = freePacketList;
104 freePacketList = adata;
105 ReleaseWriteLock(&osi_flplock);
109 osi_FreeSmallSpace(void *adata)
114 AFS_STATCNT(osi_FreeSmallSpace);
115 afs_stats_cmperf.SmallBlocksActive--;
116 ObtainWriteLock(&osi_fsplock, 323);
117 ((struct osi_packet *)adata)->next = freeSmallList;
118 freeSmallList = adata;
119 ReleaseWriteLock(&osi_fsplock);
123 /* allocate space for sender */
125 osi_AllocLargeSpace(size_t size)
127 struct osi_packet *tp;
131 AFS_STATCNT(osi_AllocLargeSpace);
132 if (size > AFS_LRALLOCSIZ)
133 osi_Panic("osi_AllocLargeSpace: size=%d\n", (int)size);
134 afs_stats_cmperf.LargeBlocksActive++;
135 if (!freePacketList) {
138 afs_stats_cmperf.LargeBlocksAlloced++;
139 p = afs_osi_Alloc(AFS_LRALLOCSIZ);
140 #ifdef KERNEL_HAVE_PIN
142 * Need to pin this memory since under heavy conditions this memory
143 * could be swapped out; the problem is that we could inside rx where
144 * interrupts are disabled and thus we would panic if we don't pin it.
146 pin(p, AFS_LRALLOCSIZ);
150 ObtainWriteLock(&osi_flplock, 324);
153 freePacketList = tp->next;
154 ReleaseWriteLock(&osi_flplock);
159 /* allocate space for sender */
161 osi_AllocSmallSpace(size_t size)
163 struct osi_packet *tp;
165 AFS_STATCNT(osi_AllocSmallSpace);
166 if (size > AFS_SMALLOCSIZ)
167 osi_Panic("osi_AllocSmallS: size=%d\n", (int)size);
169 if (!freeSmallList) {
170 afs_stats_cmperf.SmallBlocksAlloced++;
171 afs_stats_cmperf.SmallBlocksActive++;
172 tp = afs_osi_Alloc(AFS_SMALLOCSIZ);
173 #ifdef KERNEL_HAVE_PIN
174 pin((char *)tp, AFS_SMALLOCSIZ);
178 afs_stats_cmperf.SmallBlocksActive++;
179 ObtainWriteLock(&osi_fsplock, 327);
182 freeSmallList = tp->next;
183 ReleaseWriteLock(&osi_fsplock);
186 #endif /* AFS_PRIVATE_OSI_ALLOCSPACES */
189 shutdown_osinet(void)
191 AFS_STATCNT(shutdown_osinet);
192 #ifndef AFS_PRIVATE_OSI_ALLOCSPACES
193 if (afs_cold_shutdown) {
194 struct osi_packet *tp;
196 while ((tp = freePacketList)) {
197 freePacketList = tp->next;
198 afs_osi_Free(tp, AFS_LRALLOCSIZ);
199 #ifdef KERNEL_HAVE_PIN
200 unpin(tp, AFS_LRALLOCSIZ);
204 while ((tp = freeSmallList)) {
205 freeSmallList = tp->next;
206 afs_osi_Free(tp, AFS_SMALLOCSIZ);
207 #ifdef KERNEL_HAVE_PIN
208 unpin(tp, AFS_SMALLOCSIZ);
211 LOCK_INIT(&osi_fsplock, "osi_fsplock");
212 LOCK_INIT(&osi_flplock, "osi_flplock");
214 #endif /* AFS_PRIVATE_OSI_ALLOCSPACES */
215 if (afs_stats_cmperf.LargeBlocksActive ||
216 afs_stats_cmperf.SmallBlocksActive)
218 afs_warn("WARNING: not all blocks freed: large %d small %d\n",
219 afs_stats_cmperf.LargeBlocksActive,
220 afs_stats_cmperf.SmallBlocksActive);