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_op, op) |
40 | __field(unsigned int, zone_no) |
41 | __field(unsigned int, zone_cond) |
42 | ), |
43 | TP_fast_assign( |
44 | __entry->op = req_op(blk_mq_rq_from_pdu(cmd)); |
45 | __entry->zone_no = zone_no; |
46 | __entry->zone_cond = zone_cond; |
47 | __assign_disk_name(__entry->disk, |
48 | blk_mq_rq_from_pdu(cmd)->q->disk); |
49 | ), |
50 | TP_printk("%s req=%-15s zone_no=%u zone_cond=%-10s" , |
51 | __print_disk_name(__entry->disk), |
52 | blk_op_str(__entry->op), |
53 | __entry->zone_no, |
54 | blk_zone_cond_str(__entry->zone_cond)) |
55 | ); |
56 | |
57 | TRACE_EVENT(nullb_report_zones, |
58 | TP_PROTO(struct nullb *nullb, unsigned int nr_zones), |
59 | TP_ARGS(nullb, nr_zones), |
60 | TP_STRUCT__entry( |
61 | __array(char, disk, DISK_NAME_LEN) |
62 | __field(unsigned int, nr_zones) |
63 | ), |
64 | TP_fast_assign( |
65 | __entry->nr_zones = nr_zones; |
66 | __assign_disk_name(__entry->disk, nullb->disk); |
67 | ), |
68 | TP_printk("%s nr_zones=%u" , |
69 | __print_disk_name(__entry->disk), __entry->nr_zones) |
70 | ); |
71 | |
72 | #endif /* _TRACE_NULLB_H */ |
73 | |
74 | #undef TRACE_INCLUDE_PATH |
75 | #define TRACE_INCLUDE_PATH . |
76 | #undef TRACE_INCLUDE_FILE |
77 | #define TRACE_INCLUDE_FILE trace |
78 | |
79 | /* This part must be outside protection */ |
80 | #include <trace/define_trace.h> |
81 | |