/* SPDX-License-Identifier: GPL-2.0 */ /* * null_blk device driver tracepoints. * * Copyright (C) 2020 Western Digital Corporation or its affiliates. */ #undef TRACE_SYSTEM #define TRACE_SYSTEM nullb #if !defined(_TRACE_NULLB_H) || defined(TRACE_HEADER_MULTI_READ) #define _TRACE_NULLB_H #include <linux/tracepoint.h> #include <linux/trace_seq.h> #include "null_blk.h" const char *nullb_trace_disk_name(struct trace_seq *p, char *name); #define __print_disk_name(name) nullb_trace_disk_name(p, name) #ifndef TRACE_HEADER_MULTI_READ static inline void __assign_disk_name(char *name, struct gendisk *disk) { if (disk) memcpy(name, disk->disk_name, DISK_NAME_LEN); else memset(name, 0, DISK_NAME_LEN); } #endif TRACE_EVENT(nullb_zone_op, TP_PROTO(struct nullb_cmd *cmd, unsigned int zone_no, unsigned int zone_cond), TP_ARGS(cmd, zone_no, zone_cond), TP_STRUCT__entry( __array(char, disk, DISK_NAME_LEN) __field(enum req_opf, op) __field(unsigned int, zone_no) __field(unsigned int, zone_cond) ), TP_fast_assign( __entry->op = req_op(cmd->rq); __entry->zone_no = zone_no; __entry->zone_cond = zone_cond; __assign_disk_name(__entry->disk, cmd->rq->rq_disk); ), TP_printk("%s req=%-15s zone_no=%u zone_cond=%-10s", __print_disk_name(__entry->disk), blk_op_str(__entry->op), __entry->zone_no, blk_zone_cond_str(__entry->zone_cond)) ); TRACE_EVENT(nullb_report_zones, TP_PROTO(struct nullb *nullb, unsigned int nr_zones), TP_ARGS(nullb, nr_zones), TP_STRUCT__entry( __array(char, disk, DISK_NAME_LEN) __field(unsigned int, nr_zones) ), TP_fast_assign( __entry->nr_zones = nr_zones; __assign_disk_name(__entry->disk, nullb->disk); ), TP_printk("%s nr_zones=%u", __print_disk_name(__entry->disk), __entry->nr_zones) ); #endif /* _TRACE_NULLB_H */ #undef TRACE_INCLUDE_PATH #define TRACE_INCLUDE_PATH . #undef TRACE_INCLUDE_FILE #define TRACE_INCLUDE_FILE trace /* This part must be outside protection */ #include <trace/define_trace.h>