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95 lines
2.3 KiB
95 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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