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There's several locations in the kernel that open code the calculation
of the next location in the trace_seq buffer. This is usually done with
p->buffer + p->len
Instead of having this open coded, supply a helper function in the
header to do it for them. This function is called trace_seq_buffer_ptr().
Link: http://lkml.kernel.org/p/20140626220129.452783019@goodmis.org
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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As of SBC3r26 WRITE SAME(10) supports the UNMAP bit.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
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Various SCSI trace enhancements:
- Display data and protection information scatterlist lengths in the
trace output
- Add support for VERIFY and WRITE SAME commands and decode the UNMAP
bit if applicable
- Add decoding of the PROTECT field for READ/VERIFY/WRITE/WRITE SAME
commands as well as the EXPECTED INITIAL REFERENCE TAG field for
their 32-byte variants
- Decode READ CAPACITY(16), GET LBA STATUS, and UNMAP
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
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Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@jp.fujitsu.com>
Signed-off-by: Kei Tokunaga <tokunaga.keiich@jp.fujitsu.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
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Steven Rostedt (Red Hat)
Martin K. Petersen
Kei Tokunaga