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ff07a02e9e
The type name enum req_opf is misleading since it suggests that values of
this type include both an operation type and flags. Since values of this
type represent an operation only, change the type name into enum req_op.
Convert the enum req_op documentation into kernel-doc format. Move a few
definitions such that the enum req_op documentation occurs just above
the enum req_op definition.
The name "req_opf" was introduced by commit ef295ecf09 ("block: better op
and flags encoding").
Cc: Christoph Hellwig <hch@lst.de>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Damien Le Moal <damien.lemoal@wdc.com>
Cc: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20220714180729.1065367-2-bvanassche@acm.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
80 lines
2.0 KiB
C
80 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* null_blk device driver tracepoints.
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*
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* Copyright (C) 2020 Western Digital Corporation or its affiliates.
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*/
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM nullb
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#if !defined(_TRACE_NULLB_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_NULLB_H
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#include <linux/tracepoint.h>
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#include <linux/trace_seq.h>
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#include "null_blk.h"
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const char *nullb_trace_disk_name(struct trace_seq *p, char *name);
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#define __print_disk_name(name) nullb_trace_disk_name(p, name)
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#ifndef TRACE_HEADER_MULTI_READ
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static inline void __assign_disk_name(char *name, struct gendisk *disk)
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{
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if (disk)
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memcpy(name, disk->disk_name, DISK_NAME_LEN);
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else
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memset(name, 0, DISK_NAME_LEN);
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}
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#endif
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TRACE_EVENT(nullb_zone_op,
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TP_PROTO(struct nullb_cmd *cmd, unsigned int zone_no,
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unsigned int zone_cond),
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TP_ARGS(cmd, zone_no, zone_cond),
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TP_STRUCT__entry(
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__array(char, disk, DISK_NAME_LEN)
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__field(enum req_op, op)
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__field(unsigned int, zone_no)
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__field(unsigned int, zone_cond)
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),
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TP_fast_assign(
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__entry->op = req_op(cmd->rq);
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__entry->zone_no = zone_no;
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__entry->zone_cond = zone_cond;
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__assign_disk_name(__entry->disk, cmd->rq->q->disk);
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),
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TP_printk("%s req=%-15s zone_no=%u zone_cond=%-10s",
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__print_disk_name(__entry->disk),
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blk_op_str(__entry->op),
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__entry->zone_no,
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blk_zone_cond_str(__entry->zone_cond))
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);
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TRACE_EVENT(nullb_report_zones,
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TP_PROTO(struct nullb *nullb, unsigned int nr_zones),
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TP_ARGS(nullb, nr_zones),
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TP_STRUCT__entry(
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__array(char, disk, DISK_NAME_LEN)
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__field(unsigned int, nr_zones)
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),
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TP_fast_assign(
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__entry->nr_zones = nr_zones;
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__assign_disk_name(__entry->disk, nullb->disk);
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),
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TP_printk("%s nr_zones=%u",
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__print_disk_name(__entry->disk), __entry->nr_zones)
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);
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#endif /* _TRACE_NULLB_H */
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#undef TRACE_INCLUDE_PATH
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#define TRACE_INCLUDE_PATH .
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#undef TRACE_INCLUDE_FILE
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#define TRACE_INCLUDE_FILE trace
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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