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| author | Shawn Du <duyuyang@gmail.com> | 2009-04-14 13:58:56 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-04-16 10:10:57 +0200 |
| commit | d0deef5b14af7d5bbd0003a0a2a1a32326e20a6d (patch) | |
| tree | de1d438935a4cc50dd9d7e0ccccc3cfc5c7e6c06 /Documentation/fb | |
| parent | 9cfe06f8cd5c8c3ad6ab323973e87dde670642b8 (diff) | |
| download | linux-d0deef5b14af7d5bbd0003a0a2a1a32326e20a6d.tar.gz | |
blktrace: support per-partition tracing
Though one can specify '-d /dev/sda1' when using blktrace, it still traces the whole sda. To support per-partition tracing, when we start tracing, we initialize bt->start_lba and bt->end_lba to the start and end sector of that partition. Note some actions are per device, thus we don't filter 0-sector events. The original patch and discussion can be found here: http://marc.info/?l=linux-btrace&m=122949374214540&w=2 Signed-off-by: Shawn Du <duyuyang@gmail.com> Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: "Theodore Ts'o" <tytso@mit.edu> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jens Axboe <jens.axboe@oracle.com> LKML-Reference: <49E42620.4050701@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation/fb')
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