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 "perf_pmu_pri.h"
33
34 STATIC Pmu *g_pmuMgr[PERF_EVENT_TYPE_MAX] = { NULL };
35
OsPerfPmuRegister(Pmu * pmu)36 UINT32 OsPerfPmuRegister(Pmu *pmu)
37 {
38 UINT32 type;
39
40 if ((pmu == NULL) || (pmu->type >= PERF_EVENT_TYPE_MAX)) {
41 return LOS_NOK;
42 }
43
44 type = pmu->type;
45 if (g_pmuMgr[type] == NULL) {
46 g_pmuMgr[type] = pmu;
47 return LOS_OK;
48 }
49 return LOS_NOK;
50 }
51
OsPerfPmuGet(UINT32 type)52 Pmu *OsPerfPmuGet(UINT32 type)
53 {
54 if (type >= PERF_EVENT_TYPE_MAX) {
55 return NULL;
56 }
57
58 if (type == PERF_EVENT_TYPE_RAW) { /* process hardware raw events with hard pmu */
59 type = PERF_EVENT_TYPE_HW;
60 }
61 return g_pmuMgr[type];
62 }
63
OsPerfPmuRm(UINT32 type)64 VOID OsPerfPmuRm(UINT32 type)
65 {
66 if (type >= PERF_EVENT_TYPE_MAX) {
67 return;
68 }
69 g_pmuMgr[type] = NULL;
70 }
71