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/* 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() uses is_signed_type(). is_signed_type() does not
* support bitwise types. Use __field_struct() instead because
* it does not use is_signed_type().
*/
__field_struct(enum req_op, op)
__field(unsigned int, zone_no)
__field(unsigned int, zone_cond)
),
TP_fast_assign(
__entry->op = req_op(blk_mq_rq_from_pdu(cmd));
__entry->zone_no = zone_no;
__entry->zone_cond = zone_cond;
__assign_disk_name(__entry->disk,
blk_mq_rq_from_pdu(cmd)->q->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>
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