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author | 2015-08-28 09:58:54 +0800 | |
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committer | 2015-09-01 12:44:00 +0800 | |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/include/block/accounting.h | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/include/block/accounting.h')
-rw-r--r-- | qemu/include/block/accounting.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/qemu/include/block/accounting.h b/qemu/include/block/accounting.h new file mode 100644 index 000000000..4c406cff7 --- /dev/null +++ b/qemu/include/block/accounting.h @@ -0,0 +1,60 @@ +/* + * QEMU System Emulator block accounting + * + * Copyright (c) 2011 Christoph Hellwig + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ +#ifndef BLOCK_ACCOUNTING_H +#define BLOCK_ACCOUNTING_H + +#include <stdint.h> + +#include "qemu/typedefs.h" + +enum BlockAcctType { + BLOCK_ACCT_READ, + BLOCK_ACCT_WRITE, + BLOCK_ACCT_FLUSH, + BLOCK_MAX_IOTYPE, +}; + +typedef struct BlockAcctStats { + uint64_t nr_bytes[BLOCK_MAX_IOTYPE]; + uint64_t nr_ops[BLOCK_MAX_IOTYPE]; + uint64_t total_time_ns[BLOCK_MAX_IOTYPE]; + uint64_t merged[BLOCK_MAX_IOTYPE]; + uint64_t wr_highest_sector; +} BlockAcctStats; + +typedef struct BlockAcctCookie { + int64_t bytes; + int64_t start_time_ns; + enum BlockAcctType type; +} BlockAcctCookie; + +void block_acct_start(BlockAcctStats *stats, BlockAcctCookie *cookie, + int64_t bytes, enum BlockAcctType type); +void block_acct_done(BlockAcctStats *stats, BlockAcctCookie *cookie); +void block_acct_highest_sector(BlockAcctStats *stats, int64_t sector_num, + unsigned int nb_sectors); +void block_acct_merge_done(BlockAcctStats *stats, enum BlockAcctType type, + int num_requests); + +#endif |