PROBE::IOBLOCK_TRACE(3stap)eduler and block IORTaps:IOBLOCK_TRACE(3stap)
probe::ioblock_trace.end - Fires whenever a block I/O transfer is complete.
q request queue on which this bio was queued. size total size in bytes idx offset into the bio vector array phys_segments - number of segments in this bio after physical address coalescing is performed. bdev target block device bdev_contains points to the device object which contains the partition (when bio structure represents a partition) vcnt bio vector count which represents number of array element (page, offset, length) which makes up this I/O request flags see below BIO_UPTODATE 0 ok after I/O completion BIO_RW_BLOCK 1 RW_AHEAD set, and read/write would block BIO_EOF 2 out-out-bounds error BIO_SEG_VALID 3 nr_hw_seg valid BIO_CLONED 4 doesn't own data BIO_BOUNCED 5 bio is a bounce bio BIO_USER_MAPPED 6 contains user pages BIO_EOPNOTSUPP 7 not supported p_start_sect points to the start sector of the partition structure of the device devname block device name name name of the probe point bytes_done number of bytes transferred rw binary trace for read/write request opf operations and flags ino i-node number of the mapped file sector beginning sector for the entire bio
The process signals the transfer is done.
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Pages that refer to this page: tapset::ioblock(3stap)