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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
13b251bd HF |
2 | /* |
3 | * Tracepoint definitions for the s390 zcrypt device driver | |
4 | * | |
5 | * Copyright IBM Corp. 2016 | |
6 | * Author(s): Harald Freudenberger <freude@de.ibm.com> | |
7 | * | |
8 | * Currently there are two tracepoint events defined here. | |
9 | * An s390_zcrypt_req request event occurs as soon as the request is | |
10 | * recognized by the zcrypt ioctl function. This event may act as some kind | |
11 | * of request-processing-starts-now indication. | |
12 | * As late as possible within the zcrypt ioctl function there occurs the | |
13 | * s390_zcrypt_rep event which may act as the point in time where the | |
14 | * request has been processed by the kernel and the result is about to be | |
15 | * transferred back to userspace. | |
16 | * The glue which binds together request and reply event is the ptr | |
17 | * parameter, which is the local buffer address where the request from | |
18 | * userspace has been stored by the ioctl function. | |
19 | * | |
20 | * The main purpose of this zcrypt tracepoint api is to get some data for | |
21 | * performance measurements together with information about on which card | |
22 | * and queue the request has been processed. It is not an ffdc interface as | |
23 | * there is already code in the zcrypt device driver to serve the s390 | |
24 | * debug feature interface. | |
25 | */ | |
26 | ||
27 | #undef TRACE_SYSTEM | |
28 | #define TRACE_SYSTEM s390 | |
29 | ||
30 | #if !defined(_TRACE_S390_ZCRYPT_H) || defined(TRACE_HEADER_MULTI_READ) | |
31 | #define _TRACE_S390_ZCRYPT_H | |
32 | ||
33 | #include <linux/tracepoint.h> | |
34 | ||
35 | #define TP_ICARSAMODEXPO 0x0001 | |
36 | #define TP_ICARSACRT 0x0002 | |
37 | #define TB_ZSECSENDCPRB 0x0003 | |
38 | #define TP_ZSENDEP11CPRB 0x0004 | |
39 | #define TP_HWRNGCPRB 0x0005 | |
40 | ||
41 | #define show_zcrypt_tp_type(type) \ | |
42 | __print_symbolic(type, \ | |
43 | { TP_ICARSAMODEXPO, "ICARSAMODEXPO" }, \ | |
44 | { TP_ICARSACRT, "ICARSACRT" }, \ | |
45 | { TB_ZSECSENDCPRB, "ZSECSENDCPRB" }, \ | |
46 | { TP_ZSENDEP11CPRB, "ZSENDEP11CPRB" }, \ | |
47 | { TP_HWRNGCPRB, "HWRNGCPRB" }) | |
48 | ||
49 | /** | |
50 | * trace_s390_zcrypt_req - zcrypt request tracepoint function | |
51 | * @ptr: Address of the local buffer where the request from userspace | |
52 | * is stored. Can be used as a unique id to relate together | |
53 | * request and reply. | |
54 | * @type: One of the TP_ defines above. | |
55 | * | |
56 | * Called when a request from userspace is recognised within the ioctl | |
57 | * function of the zcrypt device driver and may act as an entry | |
58 | * timestamp. | |
59 | */ | |
60 | TRACE_EVENT(s390_zcrypt_req, | |
61 | TP_PROTO(void *ptr, u32 type), | |
62 | TP_ARGS(ptr, type), | |
63 | TP_STRUCT__entry( | |
64 | __field(void *, ptr) | |
65 | __field(u32, type)), | |
66 | TP_fast_assign( | |
67 | __entry->ptr = ptr; | |
68 | __entry->type = type;), | |
69 | TP_printk("ptr=%p type=%s", | |
70 | __entry->ptr, | |
71 | show_zcrypt_tp_type(__entry->type)) | |
72 | ); | |
73 | ||
74 | /** | |
75 | * trace_s390_zcrypt_rep - zcrypt reply tracepoint function | |
76 | * @ptr: Address of the local buffer where the request from userspace | |
77 | * is stored. Can be used as a unique id to match together | |
78 | * request and reply. | |
79 | * @fc: Function code. | |
80 | * @rc: The bare returncode as returned by the device driver ioctl | |
81 | * function. | |
82 | * @dev: The adapter nr where this request was actually processed. | |
83 | * @dom: Domain id of the device where this request was processed. | |
84 | * | |
85 | * Called upon recognising the reply from the crypto adapter. This | |
86 | * message may act as the exit timestamp for the request but also | |
87 | * carries some info about on which adapter the request was processed | |
88 | * and the returncode from the device driver. | |
89 | */ | |
90 | TRACE_EVENT(s390_zcrypt_rep, | |
91 | TP_PROTO(void *ptr, u32 fc, u32 rc, u16 dev, u16 dom), | |
92 | TP_ARGS(ptr, fc, rc, dev, dom), | |
93 | TP_STRUCT__entry( | |
94 | __field(void *, ptr) | |
95 | __field(u32, fc) | |
96 | __field(u32, rc) | |
97 | __field(u16, device) | |
98 | __field(u16, domain)), | |
99 | TP_fast_assign( | |
100 | __entry->ptr = ptr; | |
101 | __entry->fc = fc; | |
102 | __entry->rc = rc; | |
103 | __entry->device = dev; | |
104 | __entry->domain = dom;), | |
105 | TP_printk("ptr=%p fc=0x%04x rc=%d dev=0x%02hx domain=0x%04hx", | |
106 | __entry->ptr, | |
107 | (unsigned int) __entry->fc, | |
108 | (int) __entry->rc, | |
109 | (unsigned short) __entry->device, | |
110 | (unsigned short) __entry->domain) | |
111 | ); | |
112 | ||
113 | #endif /* _TRACE_S390_ZCRYPT_H */ | |
114 | ||
115 | /* This part must be outside protection */ | |
116 | ||
117 | #undef TRACE_INCLUDE_PATH | |
118 | #undef TRACE_INCLUDE_FILE | |
119 | ||
120 | #define TRACE_INCLUDE_PATH asm/trace | |
121 | #define TRACE_INCLUDE_FILE zcrypt | |
122 | ||
123 | #include <trace/define_trace.h> |