diff options
| author | Zhi Yong Wu <wuzhy@linux.vnet.ibm.com> | 2011-11-03 16:57:25 +0800 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2011-12-05 14:51:35 +0100 |
| commit | 0563e191516289c9d2f282a8c50f2eecef2fa773 (patch) | |
| tree | ede6d148a62baf0b2cb2fc067403a48464f2cc91 /block_int.h | |
| parent | 3535a9c6bef5234ab4df3f143763a0e89a1ad29c (diff) | |
block: add the blockio limits command line support
Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block_int.h')
| -rw-r--r-- | block_int.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/block_int.h b/block_int.h index 77c0187c3d..97b1c2be54 100644 --- a/block_int.h +++ b/block_int.h @@ -34,6 +34,12 @@ #define BLOCK_FLAG_ENCRYPT 1 #define BLOCK_FLAG_COMPAT6 4 +#define BLOCK_IO_LIMIT_READ 0 +#define BLOCK_IO_LIMIT_WRITE 1 +#define BLOCK_IO_LIMIT_TOTAL 2 + +#define BLOCK_IO_SLICE_TIME 100000000 + #define BLOCK_OPT_SIZE "size" #define BLOCK_OPT_ENCRYPT "encryption" #define BLOCK_OPT_COMPAT6 "compat6" @@ -50,6 +56,16 @@ typedef struct AIOPool { BlockDriverAIOCB *free_aiocb; } AIOPool; +typedef struct BlockIOLimit { + int64_t bps[3]; + int64_t iops[3]; +} BlockIOLimit; + +typedef struct BlockIOBaseValue { + uint64_t bytes[2]; + uint64_t ios[2]; +} BlockIOBaseValue; + struct BlockDriver { const char *format_name; int instance_size; @@ -201,6 +217,16 @@ struct BlockDriverState { void *sync_aiocb; + /* the time for latest disk I/O */ + int64_t slice_time; + int64_t slice_start; + int64_t slice_end; + BlockIOLimit io_limits; + BlockIOBaseValue io_base; + CoQueue throttled_reqs; + QEMUTimer *block_timer; + bool io_limits_enabled; + /* I/O stats (display with "info blockstats"). */ uint64_t nr_bytes[BDRV_MAX_IOTYPE]; uint64_t nr_ops[BDRV_MAX_IOTYPE]; @@ -244,6 +270,9 @@ void *qemu_aio_get(AIOPool *pool, BlockDriverState *bs, BlockDriverCompletionFunc *cb, void *opaque); void qemu_aio_release(void *p); +void bdrv_set_io_limits(BlockDriverState *bs, + BlockIOLimit *io_limits); + #ifdef _WIN32 int is_windows_drive(const char *filename); #endif |