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)
76 #elif defined(AFS_OBSD_ENV)
77 osi_obsd_Free(x, asize);
84 afs_osi_FreeStr(char *x)
86 afs_osi_Free(x, strlen(x) + 1);
89 #endif /* !AFS_NBSD_ENV && !defined(AFS_NBSD50_ENV) */
91 #ifndef AFS_PRIVATE_OSI_ALLOCSPACES
93 /* free space allocated by AllocLargeSpace. Also called by mclput when freeing
94 * a packet allocated by osi_NetReceive. */
97 osi_FreeLargeSpace(void *adata)
102 AFS_STATCNT(osi_FreeLargeSpace);
103 afs_stats_cmperf.LargeBlocksActive--;
104 ObtainWriteLock(&osi_flplock, 322);
105 ((struct osi_packet *)adata)->next = freePacketList;
106 freePacketList = adata;
107 ReleaseWriteLock(&osi_flplock);
111 osi_FreeSmallSpace(void *adata)
116 AFS_STATCNT(osi_FreeSmallSpace);
117 afs_stats_cmperf.SmallBlocksActive--;
118 ObtainWriteLock(&osi_fsplock, 323);
119 ((struct osi_packet *)adata)->next = freeSmallList;
120 freeSmallList = adata;
121 ReleaseWriteLock(&osi_fsplock);
125 /* allocate space for sender */
127 osi_AllocLargeSpace(size_t size)
129 struct osi_packet *tp;
133 AFS_STATCNT(osi_AllocLargeSpace);
134 if (size > AFS_LRALLOCSIZ)
135 osi_Panic("osi_AllocLargeSpace: size=%d\n", (int)size);
136 afs_stats_cmperf.LargeBlocksActive++;
137 if (!freePacketList) {
140 afs_stats_cmperf.LargeBlocksAlloced++;
141 p = afs_osi_Alloc(AFS_LRALLOCSIZ);
142 #ifdef KERNEL_HAVE_PIN
144 * Need to pin this memory since under heavy conditions this memory
145 * could be swapped out; the problem is that we could inside rx where
146 * interrupts are disabled and thus we would panic if we don't pin it.
148 pin(p, AFS_LRALLOCSIZ);
152 ObtainWriteLock(&osi_flplock, 324);
155 freePacketList = tp->next;
156 ReleaseWriteLock(&osi_flplock);
161 /* allocate space for sender */
163 osi_AllocSmallSpace(size_t size)
165 struct osi_packet *tp;
167 AFS_STATCNT(osi_AllocSmallSpace);
168 if (size > AFS_SMALLOCSIZ)
169 osi_Panic("osi_AllocSmallS: size=%d\n", (int)size);
171 if (!freeSmallList) {
172 afs_stats_cmperf.SmallBlocksAlloced++;
173 afs_stats_cmperf.SmallBlocksActive++;
174 tp = afs_osi_Alloc(AFS_SMALLOCSIZ);
175 #ifdef KERNEL_HAVE_PIN
176 pin((char *)tp, AFS_SMALLOCSIZ);
180 afs_stats_cmperf.SmallBlocksActive++;
181 ObtainWriteLock(&osi_fsplock, 327);
184 freeSmallList = tp->next;
185 ReleaseWriteLock(&osi_fsplock);
188 #endif /* AFS_PRIVATE_OSI_ALLOCSPACES */
191 shutdown_osinet(void)
193 AFS_STATCNT(shutdown_osinet);
194 #ifndef AFS_PRIVATE_OSI_ALLOCSPACES
195 if (afs_cold_shutdown) {
196 struct osi_packet *tp;
198 while ((tp = freePacketList)) {
199 freePacketList = tp->next;
200 afs_osi_Free(tp, AFS_LRALLOCSIZ);
201 #ifdef KERNEL_HAVE_PIN
202 unpin(tp, AFS_LRALLOCSIZ);
206 while ((tp = freeSmallList)) {
207 freeSmallList = tp->next;
208 afs_osi_Free(tp, AFS_SMALLOCSIZ);
209 #ifdef KERNEL_HAVE_PIN
210 unpin(tp, AFS_SMALLOCSIZ);
213 LOCK_INIT(&osi_fsplock, "osi_fsplock");
214 LOCK_INIT(&osi_flplock, "osi_flplock");
216 #endif /* AFS_PRIVATE_OSI_ALLOCSPACES */
217 if (afs_stats_cmperf.LargeBlocksActive ||
218 afs_stats_cmperf.SmallBlocksActive)
220 afs_warn("WARNING: not all blocks freed: large %d small %d\n",
221 afs_stats_cmperf.LargeBlocksActive,
222 afs_stats_cmperf.SmallBlocksActive);