projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 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> |