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c51d0419 CK |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* | |
3 | * null_blk device driver tracepoints. | |
4 | * | |
5 | * Copyright (C) 2020 Western Digital Corporation or its affiliates. | |
6 | */ | |
7 | ||
8 | #undef TRACE_SYSTEM | |
9 | #define TRACE_SYSTEM nullb | |
10 | ||
11 | #if !defined(_TRACE_NULLB_H) || defined(TRACE_HEADER_MULTI_READ) | |
12 | #define _TRACE_NULLB_H | |
13 | ||
14 | #include <linux/tracepoint.h> | |
15 | #include <linux/trace_seq.h> | |
16 | ||
17 | #include "null_blk.h" | |
18 | ||
19 | const char *nullb_trace_disk_name(struct trace_seq *p, char *name); | |
20 | ||
21 | #define __print_disk_name(name) nullb_trace_disk_name(p, name) | |
22 | ||
23 | #ifndef TRACE_HEADER_MULTI_READ | |
24 | static inline void __assign_disk_name(char *name, struct gendisk *disk) | |
25 | { | |
26 | if (disk) | |
27 | memcpy(name, disk->disk_name, DISK_NAME_LEN); | |
28 | else | |
29 | memset(name, 0, DISK_NAME_LEN); | |
30 | } | |
31 | #endif | |
32 | ||
33 | TRACE_EVENT(nullb_zone_op, | |
34 | TP_PROTO(struct nullb_cmd *cmd, unsigned int zone_no, | |
35 | unsigned int zone_cond), | |
36 | TP_ARGS(cmd, zone_no, zone_cond), | |
37 | TP_STRUCT__entry( | |
38 | __array(char, disk, DISK_NAME_LEN) | |
39 | __field(enum req_opf, op) | |
40 | __field(unsigned int, zone_no) | |
41 | __field(unsigned int, zone_cond) | |
42 | ), | |
43 | TP_fast_assign( | |
44 | __entry->op = req_op(cmd->rq); | |
45 | __entry->zone_no = zone_no; | |
46 | __entry->zone_cond = zone_cond; | |
47 | __assign_disk_name(__entry->disk, cmd->rq->rq_disk); | |
48 | ), | |
49 | TP_printk("%s req=%-15s zone_no=%u zone_cond=%-10s", | |
50 | __print_disk_name(__entry->disk), | |
51 | blk_op_str(__entry->op), | |
52 | __entry->zone_no, | |
53 | blk_zone_cond_str(__entry->zone_cond)) | |
54 | ); | |
55 | ||
56 | TRACE_EVENT(nullb_report_zones, | |
57 | TP_PROTO(struct nullb *nullb, unsigned int nr_zones), | |
58 | TP_ARGS(nullb, nr_zones), | |
59 | TP_STRUCT__entry( | |
60 | __array(char, disk, DISK_NAME_LEN) | |
61 | __field(unsigned int, nr_zones) | |
62 | ), | |
63 | TP_fast_assign( | |
64 | __entry->nr_zones = nr_zones; | |
65 | __assign_disk_name(__entry->disk, nullb->disk); | |
66 | ), | |
67 | TP_printk("%s nr_zones=%u", | |
68 | __print_disk_name(__entry->disk), __entry->nr_zones) | |
69 | ); | |
70 | ||
71 | #endif /* _TRACE_NULLB_H */ | |
72 | ||
73 | #undef TRACE_INCLUDE_PATH | |
74 | #define TRACE_INCLUDE_PATH . | |
75 | #undef TRACE_INCLUDE_FILE | |
76 | #define TRACE_INCLUDE_FILE null_blk_trace | |
77 | ||
78 | /* This part must be outside protection */ | |
79 | #include <trace/define_trace.h> |