1 /*
2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 * conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12 * of conditions and the following disclaimer in the documentation and/or other materials
13 * provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16 * to endorse or promote products derived from this software without specific prior written
17 * permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/statfs.h>
33 #include <sys/mount.h>
34 #include "proc_fs.h"
35
36 #ifdef LOSCFG_SHELL_CMD_DEBUG
37 #include "los_vm_map.h"
38 #include "los_vm_dump.h"
39 #include "los_vm_lock.h"
40 #include "los_process_pri.h"
41
42 #ifdef LOSCFG_KERNEL_VM
43
OsVmDumpSeqSpaces(struct SeqBuf * seqBuf)44 STATIC VOID OsVmDumpSeqSpaces(struct SeqBuf *seqBuf)
45 {
46 LosVmSpace *space = NULL;
47 LosVmMapRegion *region = NULL;
48 LosRbNode *pstRbNode = NULL;
49 LosRbNode *pstRbNodeNext = NULL;
50 UINT32 pssPages = 0;
51 UINT32 spacePages;
52 UINT32 regionPages;
53 LosProcessCB *pcb = NULL;
54 LOS_DL_LIST *aspaceList = LOS_GetVmSpaceList();
55 LosMux *aspaceListMux = OsGVmSpaceMuxGet();
56
57 (VOID)LOS_MuxAcquire(aspaceListMux);
58 LOS_DL_LIST_FOR_EACH_ENTRY(space, aspaceList, LosVmSpace, node) {
59 (VOID)LOS_MuxAcquire(&space->regionMux);
60 spacePages = OsCountAspacePages(space);
61 pcb = OsGetPIDByAspace(space);
62 if (pcb == NULL) {
63 (VOID)LOS_MuxRelease(&space->regionMux);
64 continue;
65 }
66 (VOID)LosBufPrintf(seqBuf, "\r\n PID aspace name base size pages \n");
67 (VOID)LosBufPrintf(seqBuf, " ---- ------ ---- ---- ----- ----\n");
68 (VOID)LosBufPrintf(seqBuf, " %-4d %#010x %-10.10s %#010x %#010x %d\n",
69 pcb->processID, space, pcb->processName, space->base, space->size, spacePages);
70 (VOID)LosBufPrintf(seqBuf,
71 "\r\n\t region name base size mmu_flags pages pg/ref\n");
72 (VOID)LosBufPrintf(seqBuf,
73 "\t ------ ---- ---- ---- --------- ----- -----\n");
74
75 RB_SCAN_SAFE(&space->regionRbTree, pstRbNode, pstRbNodeNext)
76 region = (LosVmMapRegion *)pstRbNode;
77 regionPages = OsCountRegionPages(space, region, &pssPages);
78 CHAR *flagsStr = OsArchFlagsToStr(region->regionFlags);
79 if (flagsStr == NULL) {
80 break;
81 }
82 (VOID)LosBufPrintf(seqBuf, "\t %#010x %-19.19s %#010x %#010x %-15.15s %4d %4d\n",
83 region, OsGetRegionNameOrFilePath(region), region->range.base,
84 region->range.size, flagsStr, regionPages, pssPages);
85 (VOID)LOS_MemFree(m_aucSysMem0, flagsStr);
86 (VOID)OsRegionOverlapCheck(space, region);
87 RB_SCAN_SAFE_END(&space->regionRbTree, pstRbNode, pstRbNodeNext)
88 (VOID)LOS_MuxRelease(&space->regionMux);
89 }
90 (VOID)LOS_MuxRelease(aspaceListMux);
91 }
92
VmmProcFill(struct SeqBuf * m,void * v)93 static int VmmProcFill(struct SeqBuf *m, void *v)
94 {
95 (void)v;
96 OsVmDumpSeqSpaces(m);
97
98 return 0;
99 }
100
101 static const struct ProcFileOperations VMM_PROC_FOPS = {
102 .write = NULL,
103 .read = VmmProcFill,
104 };
105
ProcVmmInit(void)106 void ProcVmmInit(void)
107 {
108 struct ProcDirEntry *pde = CreateProcEntry("vmm", 0, NULL);
109 if (pde == NULL) {
110 PRINT_ERR("create /proc/vmm error!\n");
111 return;
112 }
113
114 pde->procFileOps = &VMM_PROC_FOPS;
115 }
116 #endif
117 #endif
118