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Improve sparse documentation

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Add documentation of -DCONFIG_SPARSE_RCU_POINTER.
I started to add documentation of -D__CHECK_ENDIAN__ as well, but
discovered I'm too late; that's now enabled by default.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Matthew Wilcox 2017-02-13 11:16:02 -08:00 committed by Jonathan Corbet
parent c33dea1eda
commit 291b9d7368
1 changed files with 6 additions and 0 deletions
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Documentation/dev-tools/sparse.rst
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@ -103,3 +103,9 @@ have already built it.
The optional make variable CF can be used to pass arguments to sparse. The
build system passes -Wbitwise to sparse automatically.
Checking RCU annotations
~~~~~~~~~~~~~~~~~~~~~~~~
RCU annotations are not checked by default. To enable RCU annotation
checks, include -DCONFIG_SPARSE_RCU_POINTER in your CF flags.