From: Li Zefan <lizf@cn.fujitsu.com>
Date: Tue, 14 Apr 2009 05:59:34 +0000 (+0800)
Subject: blktrace: support per-partition tracing for ftrace plugin
X-Git-Tag: v2.6.31-rc1~401^2~154
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9908c30997b8a73c95f836170b9998dae9aa3f4a;p=pandora-kernel.git

blktrace: support per-partition tracing for ftrace plugin

The previous patch adds support to trace a single partition for
relay+ioctl blktrace, and this patch is for ftrace plugin blktrace:

  # echo 1 > /sys/block/sda/sda7/enable
  # cat start_lba
  102398373
  # cat end_lba
  102703545

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: Shawn Du <duyuyang@gmail.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
LKML-Reference: <49E42646.4060608@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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