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 */
46 #if !defined(AFS_NBSD_ENV) || defined(AFS_NBSD50_ENV)
48 afs_osi_Alloc(size_t x)
50 #if !defined(AFS_LINUX20_ENV) && !defined(AFS_FBSD_ENV)
51 struct osimem *tm = NULL;
55 AFS_STATCNT(osi_Alloc);
56 /* 0-length allocs may return NULL ptr from AFS_KALLOC, so we special-case
57 * things so that NULL returned iff an error occurred */
61 AFS_STATS(afs_stats_cmperf.OutStandingAllocs++);
62 AFS_STATS(afs_stats_cmperf.OutStandingMemUsage += x);
63 #ifdef AFS_LINUX20_ENV
64 return osi_linux_alloc(x, 1);
65 #elif defined(AFS_FBSD_ENV)
66 return osi_fbsd_alloc(x, 1);
69 tm = (struct osimem *)AFS_KALLOC(size);
72 osi_Panic("osi_Alloc: Couldn't allocate %d bytes; out of memory!\n",
80 afs_osi_Free(void *x, size_t asize)
82 AFS_STATCNT(osi_Free);
84 return; /* check for putting memZero back */
86 AFS_STATS(afs_stats_cmperf.OutStandingAllocs--);
87 AFS_STATS(afs_stats_cmperf.OutStandingMemUsage -= asize);
88 #if defined(AFS_LINUX20_ENV)
90 #elif defined(AFS_FBSD_ENV)
92 #elif defined(AFS_OBSD_ENV)
93 osi_obsd_Free(x, asize);
95 AFS_KFREE((struct osimem *)x, asize);
100 afs_osi_FreeStr(char *x)
102 afs_osi_Free(x, strlen(x) + 1);
105 #endif /* !AFS_NBSD_ENV && !defined(AFS_NBSD50_ENV) */
107 #ifndef AFS_PRIVATE_OSI_ALLOCSPACES
109 /* free space allocated by AllocLargeSpace. Also called by mclput when freeing
110 * a packet allocated by osi_NetReceive. */
113 osi_FreeLargeSpace(void *adata)
118 AFS_STATCNT(osi_FreeLargeSpace);
119 afs_stats_cmperf.LargeBlocksActive--;
120 ObtainWriteLock(&osi_flplock, 322);
121 ((struct osi_packet *)adata)->next = freePacketList;
122 freePacketList = adata;
123 ReleaseWriteLock(&osi_flplock);
127 osi_FreeSmallSpace(void *adata)
132 AFS_STATCNT(osi_FreeSmallSpace);
133 afs_stats_cmperf.SmallBlocksActive--;
134 ObtainWriteLock(&osi_fsplock, 323);
135 ((struct osi_packet *)adata)->next = freeSmallList;
136 freeSmallList = adata;
137 ReleaseWriteLock(&osi_fsplock);
141 /* allocate space for sender */
143 osi_AllocLargeSpace(size_t size)
145 struct osi_packet *tp;
149 AFS_STATCNT(osi_AllocLargeSpace);
150 if (size > AFS_LRALLOCSIZ)
151 osi_Panic("osi_AllocLargeSpace: size=%d\n", (int)size);
152 afs_stats_cmperf.LargeBlocksActive++;
153 if (!freePacketList) {
156 afs_stats_cmperf.LargeBlocksAlloced++;
157 p = (char *)afs_osi_Alloc(AFS_LRALLOCSIZ);
158 #ifdef KERNEL_HAVE_PIN
160 * Need to pin this memory since under heavy conditions this memory
161 * could be swapped out; the problem is that we could inside rx where
162 * interrupts are disabled and thus we would panic if we don't pin it.
164 pin(p, AFS_LRALLOCSIZ);
168 ObtainWriteLock(&osi_flplock, 324);
171 freePacketList = tp->next;
172 ReleaseWriteLock(&osi_flplock);
177 /* allocate space for sender */
179 osi_AllocSmallSpace(size_t size)
181 struct osi_packet *tp;
183 AFS_STATCNT(osi_AllocSmallSpace);
184 if (size > AFS_SMALLOCSIZ)
185 osi_Panic("osi_AllocSmallS: size=%d\n", (int)size);
187 if (!freeSmallList) {
188 afs_stats_cmperf.SmallBlocksAlloced++;
189 afs_stats_cmperf.SmallBlocksActive++;
190 tp = afs_osi_Alloc(AFS_SMALLOCSIZ);
191 #ifdef KERNEL_HAVE_PIN
192 pin((char *)tp, AFS_SMALLOCSIZ);
196 afs_stats_cmperf.SmallBlocksActive++;
197 ObtainWriteLock(&osi_fsplock, 327);
200 freeSmallList = tp->next;
201 ReleaseWriteLock(&osi_fsplock);
204 #endif /* AFS_PRIVATE_OSI_ALLOCSPACES */
207 shutdown_osinet(void)
209 AFS_STATCNT(shutdown_osinet);
210 #ifndef AFS_PRIVATE_OSI_ALLOCSPACES
211 if (afs_cold_shutdown) {
212 struct osi_packet *tp;
214 while ((tp = freePacketList)) {
215 freePacketList = tp->next;
216 afs_osi_Free(tp, AFS_LRALLOCSIZ);
217 #ifdef KERNEL_HAVE_PIN
218 unpin(tp, AFS_LRALLOCSIZ);
222 while ((tp = freeSmallList)) {
223 freeSmallList = tp->next;
224 afs_osi_Free(tp, AFS_SMALLOCSIZ);
225 #ifdef KERNEL_HAVE_PIN
226 unpin(tp, AFS_SMALLOCSIZ);
229 LOCK_INIT(&osi_fsplock, "osi_fsplock");
230 LOCK_INIT(&osi_flplock, "osi_flplock");
232 #endif /* AFS_PRIVATE_OSI_ALLOCSPACES */
233 if (afs_stats_cmperf.LargeBlocksActive ||
234 afs_stats_cmperf.SmallBlocksActive)
236 afs_warn("WARNING: not all blocks freed: large %d small %d\n",
237 afs_stats_cmperf.LargeBlocksActive,
238 afs_stats_cmperf.SmallBlocksActive);