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| author | Darrick J. Wong <darrick.wong@oracle.com> | 2016-06-21 04:53:28 +0300 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2016-06-21 04:53:28 +0300 |
| commit | 479c641273df632478cda7fe76b833df64e319bc (patch) | |
| tree | fcfade01ced0f2aab76e3366aaba93ad3d574acc /fs/xfs/xfs_error.c | |
| parent | 3f94c441e2c3dea029a46a2326b2170acf2c7713 (diff) | |
| download | linux-479c641273df632478cda7fe76b833df64e319bc.tar.xz | |
xfs: enable buffer deadlock postmortem diagnosis via ftrace
Create a second buf_trylock tracepoint so that we can distinguish
between a successful and a failed trylock. With this piece, we can
use a script to look at the ftrace output to detect buffer deadlocks.
[dchinner: update to if/else as per hch's suggestion]
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_error.c')
0 files changed, 0 insertions, 0 deletions