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96 lines
2.3 KiB
96 lines
2.3 KiB
/*
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* Blktrace record utility - Convert binary trace data into bunches of IOs
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*
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* Copyright (C) 2007 Alan D. Brunelle <Alan.Brunelle@hp.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#if !defined(__BTRECORD_H__)
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#define __BTRECORD_H__
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#include <asm/types.h>
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#define BT_MAX_PKTS 512
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/*
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* Header for each bunch
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*
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* @nkts: Number of IO packets to process
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* @time_stamp: Time stamp for this bunch of IOs
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*/
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struct io_bunch_hdr {
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__u64 npkts;
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__u64 time_stamp;
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};
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/*
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* IO specifer
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*
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* @sector: Sector number of IO
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* @nbytes: Number of bytes to process
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* @rw: IO direction: 0 = write, 1 = read
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*/
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struct io_pkt {
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__u64 sector;
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__u64 nbytes;
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__u32 rw;
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};
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/*
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* Shorthand notion of a bunch of IOs
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*
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* @hdr: Header describing stall and how many IO packets follow
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* @pkts: Individual IOs are described here
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*/
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struct io_bunch {
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struct io_bunch_hdr hdr;
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struct io_pkt pkts[BT_MAX_PKTS];
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};
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/*
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* Header for each recorded file
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*
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* @version: Version information
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* @genesis: Time stamp for earliest bunch
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* @nbunches: Number of bunches put into the file
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* @total_pkts: Number of packets to be processed
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*/
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struct io_file_hdr {
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__u64 version;
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__u64 genesis;
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__u64 nbunches;
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__u64 total_pkts;
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};
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static inline __u64 mk_btversion(int mjr, int mnr, int sub)
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{
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return ((mjr & 0xff) << 16) | ((mnr & 0xff) << 8) | (sub & 0xff);
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}
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static inline void get_btversion(__u64 version, int *mjr, int *mnr, int *sub)
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{
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*mjr = (int)((version >> 16) & 0xff);
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*mnr = (int)((version >> 8) & 0xff);
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*sub = (int)((version >> 0) & 0xff);
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}
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static char my_btversion[] = "1.0.0";
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static int btver_mjr = 1;
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static int btver_mnr = 0;
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static int btver_sub = 0;
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#endif
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